From 3741eb9f8c3be3ec59583881c1f49980dad844e0 Mon Sep 17 00:00:00 2001 From: Jacob Shin Date: Thu, 29 May 2014 17:26:51 +0200 Subject: perf tools: allow user to specify hardware breakpoint bp_len Currently bp_len is given a default value of 4. Allow user to override it: $ perf stat -e mem:0x1000/8 ^ bp_len If no value is given, it will default to 4 as it did before. Signed-off-by: Jacob Shin Signed-off-by: Suravee Suthikulpanit Acked-by: Jiri Olsa Reviewed-by: Oleg Nesterov Cc: Arnaldo Carvalho de Melo Cc: Ingo Molnar Cc: Namhyung Kim Cc: Peter Zijlstra Cc: xiakaixu Signed-off-by: Frederic Weisbecker --- tools/perf/Documentation/perf-record.txt | 7 +++++-- tools/perf/util/parse-events.c | 21 +++++++++++---------- tools/perf/util/parse-events.h | 2 +- tools/perf/util/parse-events.l | 1 + tools/perf/util/parse-events.y | 26 ++++++++++++++++++++++++-- 5 files changed, 42 insertions(+), 15 deletions(-) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index af9a54ece024..81a20f21a3e6 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -33,12 +33,15 @@ OPTIONS - a raw PMU event (eventsel+umask) in the form of rNNN where NNN is a hexadecimal event descriptor. - - a hardware breakpoint event in the form of '\mem:addr[:access]' + - a hardware breakpoint event in the form of '\mem:addr[/len][:access]' where addr is the address in memory you want to break in. Access is the memory access type (read, write, execute) it can - be passed as follows: '\mem:addr[:[r][w][x]]'. + be passed as follows: '\mem:addr[:[r][w][x]]'. len is the range, + number of bytes from specified addr, which the breakpoint will cover. If you want to profile read-write accesses in 0x1000, just set 'mem:0x1000:rw'. + If you want to profile write accesses in [0x1000~1008), just set + 'mem:0x1000/8:w'. --filter=:: Event filter. diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index c659a3ca1283..efa1ff4cca63 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -526,7 +526,7 @@ do { \ } int parse_events_add_breakpoint(struct list_head *list, int *idx, - void *ptr, char *type) + void *ptr, char *type, u64 len) { struct perf_event_attr attr; @@ -536,14 +536,15 @@ int parse_events_add_breakpoint(struct list_head *list, int *idx, if (parse_breakpoint_type(type, &attr)) return -EINVAL; - /* - * We should find a nice way to override the access length - * Provide some defaults for now - */ - if (attr.bp_type == HW_BREAKPOINT_X) - attr.bp_len = sizeof(long); - else - attr.bp_len = HW_BREAKPOINT_LEN_4; + /* Provide some defaults if len is not specified */ + if (!len) { + if (attr.bp_type == HW_BREAKPOINT_X) + len = sizeof(long); + else + len = HW_BREAKPOINT_LEN_4; + } + + attr.bp_len = len; attr.type = PERF_TYPE_BREAKPOINT; attr.sample_period = 1; @@ -1364,7 +1365,7 @@ void print_events(const char *event_glob, bool name_only) printf("\n"); printf(" %-50s [%s]\n", - "mem:[:access]", + "mem:[/len][:access]", event_type_descriptors[PERF_TYPE_BREAKPOINT]); printf("\n"); } diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h index db2cf78ff0f3..a19fbeb80943 100644 --- a/tools/perf/util/parse-events.h +++ b/tools/perf/util/parse-events.h @@ -104,7 +104,7 @@ int parse_events_add_numeric(struct list_head *list, int *idx, int parse_events_add_cache(struct list_head *list, int *idx, char *type, char *op_result1, char *op_result2); int parse_events_add_breakpoint(struct list_head *list, int *idx, - void *ptr, char *type); + void *ptr, char *type, u64 len); int parse_events_add_pmu(struct list_head *list, int *idx, char *pmu , struct list_head *head_config); enum perf_pmu_event_symbol_type diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l index 906630bbf8eb..94eacb6c1ef7 100644 --- a/tools/perf/util/parse-events.l +++ b/tools/perf/util/parse-events.l @@ -159,6 +159,7 @@ branch_type { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE { {modifier_bp} { return str(yyscanner, PE_MODIFIER_BP); } : { return ':'; } +"/" { return '/'; } {num_dec} { return value(yyscanner, 10); } {num_hex} { return value(yyscanner, 16); } /* diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y index 93c4c9fbc922..72def077dbbf 100644 --- a/tools/perf/util/parse-events.y +++ b/tools/perf/util/parse-events.y @@ -326,6 +326,28 @@ PE_NAME_CACHE_TYPE } event_legacy_mem: +PE_PREFIX_MEM PE_VALUE '/' PE_VALUE ':' PE_MODIFIER_BP sep_dc +{ + struct parse_events_evlist *data = _data; + struct list_head *list; + + ALLOC_LIST(list); + ABORT_ON(parse_events_add_breakpoint(list, &data->idx, + (void *) $2, $6, $4)); + $$ = list; +} +| +PE_PREFIX_MEM PE_VALUE '/' PE_VALUE sep_dc +{ + struct parse_events_evlist *data = _data; + struct list_head *list; + + ALLOC_LIST(list); + ABORT_ON(parse_events_add_breakpoint(list, &data->idx, + (void *) $2, NULL, $4)); + $$ = list; +} +| PE_PREFIX_MEM PE_VALUE ':' PE_MODIFIER_BP sep_dc { struct parse_events_evlist *data = _data; @@ -333,7 +355,7 @@ PE_PREFIX_MEM PE_VALUE ':' PE_MODIFIER_BP sep_dc ALLOC_LIST(list); ABORT_ON(parse_events_add_breakpoint(list, &data->idx, - (void *) $2, $4)); + (void *) $2, $4, 0)); $$ = list; } | @@ -344,7 +366,7 @@ PE_PREFIX_MEM PE_VALUE sep_dc ALLOC_LIST(list); ABORT_ON(parse_events_add_breakpoint(list, &data->idx, - (void *) $2, NULL)); + (void *) $2, NULL, 0)); $$ = list; } -- cgit v1.2.3 From ec32398c231a019d39017afee490728ab3b60b92 Mon Sep 17 00:00:00 2001 From: Jacob Shin Date: Thu, 29 May 2014 17:26:52 +0200 Subject: perf tools: add hardware breakpoint bp_len test cases Signed-off-by: Jacob Shin Signed-off-by: Suravee Suthikulpanit Acked-by: Jiri Olsa Reviewed-by: Oleg Nesterov Cc: Arnaldo Carvalho de Melo Cc: Ingo Molnar Cc: Namhyung Kim Cc: Peter Zijlstra Cc: xiakaixu Signed-off-by: Frederic Weisbecker --- tools/perf/tests/parse-events.c | 58 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) (limited to 'tools') diff --git a/tools/perf/tests/parse-events.c b/tools/perf/tests/parse-events.c index 7f2f51f93619..4169f460efa1 100644 --- a/tools/perf/tests/parse-events.c +++ b/tools/perf/tests/parse-events.c @@ -1145,6 +1145,49 @@ static int test__pinned_group(struct perf_evlist *evlist) return 0; } +static int test__checkevent_breakpoint_len(struct perf_evlist *evlist) +{ + struct perf_evsel *evsel = perf_evlist__first(evlist); + + TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->nr_entries); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_BREAKPOINT == evsel->attr.type); + TEST_ASSERT_VAL("wrong config", 0 == evsel->attr.config); + TEST_ASSERT_VAL("wrong bp_type", (HW_BREAKPOINT_R | HW_BREAKPOINT_W) == + evsel->attr.bp_type); + TEST_ASSERT_VAL("wrong bp_len", HW_BREAKPOINT_LEN_1 == + evsel->attr.bp_len); + + return 0; +} + +static int test__checkevent_breakpoint_len_w(struct perf_evlist *evlist) +{ + struct perf_evsel *evsel = perf_evlist__first(evlist); + + TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->nr_entries); + TEST_ASSERT_VAL("wrong type", PERF_TYPE_BREAKPOINT == evsel->attr.type); + TEST_ASSERT_VAL("wrong config", 0 == evsel->attr.config); + TEST_ASSERT_VAL("wrong bp_type", HW_BREAKPOINT_W == + evsel->attr.bp_type); + TEST_ASSERT_VAL("wrong bp_len", HW_BREAKPOINT_LEN_2 == + evsel->attr.bp_len); + + return 0; +} + +static int +test__checkevent_breakpoint_len_rw_modifier(struct perf_evlist *evlist) +{ + struct perf_evsel *evsel = perf_evlist__first(evlist); + + TEST_ASSERT_VAL("wrong exclude_user", !evsel->attr.exclude_user); + TEST_ASSERT_VAL("wrong exclude_kernel", evsel->attr.exclude_kernel); + TEST_ASSERT_VAL("wrong exclude_hv", evsel->attr.exclude_hv); + TEST_ASSERT_VAL("wrong precise_ip", !evsel->attr.precise_ip); + + return test__checkevent_breakpoint_rw(evlist); +} + static int count_tracepoints(void) { char events_path[PATH_MAX]; @@ -1420,6 +1463,21 @@ static struct evlist_test test__events[] = { .check = test__pinned_group, .id = 41, }, + { + .name = "mem:0/1", + .check = test__checkevent_breakpoint_len, + .id = 42, + }, + { + .name = "mem:0/2:w", + .check = test__checkevent_breakpoint_len_w, + .id = 43, + }, + { + .name = "mem:0/4:rw:u", + .check = test__checkevent_breakpoint_len_rw_modifier, + .id = 44 + }, #if defined(__s390x__) { .name = "kvm-s390:kvm_s390_create_vm", -- cgit v1.2.3 From e9408e4f278875aa5862560b4b425b27dfcb643f Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Mon, 8 Dec 2014 09:13:52 -0800 Subject: rcutorture: Add checks for stall ending before dump start The current rcutorture scripting checks for actual stalls (via the "Call Trace:" check), but fails to spot the case where a stall ends just as it is being detected. This commit therefore adds a check for this case. Signed-off-by: Paul E. McKenney --- tools/testing/selftests/rcutorture/bin/parse-console.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/rcutorture/bin/parse-console.sh b/tools/testing/selftests/rcutorture/bin/parse-console.sh index f962ba4cf68b..d8f35cf116be 100755 --- a/tools/testing/selftests/rcutorture/bin/parse-console.sh +++ b/tools/testing/selftests/rcutorture/bin/parse-console.sh @@ -36,7 +36,7 @@ if grep -Pq '\x00' < $file then print_warning Console output contains nul bytes, old qemu still running? fi -egrep 'Badness|WARNING:|Warn|BUG|===========|Call Trace:|Oops:' < $file | grep -v 'ODEBUG: ' | grep -v 'Warning: unable to open an initial console' > $T +egrep 'Badness|WARNING:|Warn|BUG|===========|Call Trace:|Oops:|Stall ended before state dump start' < $file | grep -v 'ODEBUG: ' | grep -v 'Warning: unable to open an initial console' > $T if test -s $T then print_warning Assertion failure in $file $title -- cgit v1.2.3 From 79619cf5151257f82a4c016b02283e2ceb4b63ce Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Mon, 17 Nov 2014 10:12:27 -0800 Subject: rcutorture: Issue warnings on close calls due to Reader Batch blows Normal rcutorture checking overestimates grace periods somewhat due to the fact that there is a delay from a grace-period request until the start of the corresponding grace period and another delay from the end of that grace period to notification of the requestor. This means that rcutorture's detection of RCU bugs is less sensitive than it might be. It turns out that rcutorture also checks the underlying grace-period "completed" counter (displayed in Reader Batch output), which in theory allows rcutorture to do exact checks. In practice, memory misordering (by both compiler and CPU) can result in false positives. However, experience on x86 shows that these false positives are quite rare, occurring less than one time per 1,000 hours of testing. This commit therefore does the exact checking, giving a warning if any Reader Batch blows happen, and flagging an error if they happen more often than once every three hours in long tests. Signed-off-by: Paul E. McKenney --- .../selftests/rcutorture/bin/kvm-recheck-rcu.sh | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcu.sh b/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcu.sh index d6cc07fc137f..559e01ac86be 100755 --- a/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcu.sh +++ b/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcu.sh @@ -30,6 +30,7 @@ else echo Unreadable results directory: $i exit 1 fi +. tools/testing/selftests/rcutorture/bin/functions.sh configfile=`echo $i | sed -e 's/^.*\///'` ngps=`grep ver: $i/console.log 2> /dev/null | tail -1 | sed -e 's/^.* ver: //' -e 's/ .*$//'` @@ -48,4 +49,21 @@ else title="$title ($ngpsps per second)" fi echo $title + nclosecalls=`grep --binary-files=text 'torture: Reader Batch' $i/console.log | tail -1 | awk '{for (i=NF-8;i<=NF;i++) sum+=$i; } END {print sum}'` + if test -z "$nclosecalls" + then + exit 0 + fi + if test "$nclosecalls" -eq 0 + then + exit 0 + fi + # Compute number of close calls per tenth of an hour + nclosecalls10=`awk -v nclosecalls=$nclosecalls -v dur=$dur 'BEGIN { print int(nclosecalls * 36000 / dur) }' < /dev/null` + if test $nclosecalls10 -gt 5 -a $nclosecalls -gt 1 + then + print_bug $nclosecalls "Reader Batch close calls in" $(($dur/60)) minute run: $i + else + print_warning $nclosecalls "Reader Batch close calls in" $(($dur/60)) minute run: $i + fi fi -- cgit v1.2.3 From 3b009c0ebe02a06d2d5bd667da0eb9cefa79321d Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Fri, 21 Nov 2014 13:54:57 -0800 Subject: rcutorture: Make build-output parsing correctly flag RCU's warnings Signed-off-by: Paul E. McKenney --- .../testing/selftests/rcutorture/bin/parse-build.sh | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/rcutorture/bin/parse-build.sh b/tools/testing/selftests/rcutorture/bin/parse-build.sh index 499d1e598e42..a6b57622c2e5 100755 --- a/tools/testing/selftests/rcutorture/bin/parse-build.sh +++ b/tools/testing/selftests/rcutorture/bin/parse-build.sh @@ -26,12 +26,15 @@ # # Authors: Paul E. McKenney -T=$1 +F=$1 title=$2 +T=/tmp/parse-build.sh.$$ +trap 'rm -rf $T' 0 +mkdir $T . functions.sh -if grep -q CC < $T +if grep -q CC < $F then : else @@ -39,18 +42,21 @@ else exit 1 fi -if grep -q "error:" < $T +if grep -q "error:" < $F then print_bug $title build errors: - grep "error:" < $T + grep "error:" < $F exit 2 fi -exit 0 -if egrep -q "rcu[^/]*\.c.*warning:|rcu.*\.h.*warning:" < $T +grep warning: < $F > $T/warnings +grep "include/linux/*rcu*\.h:" $T/warnings > $T/hwarnings +grep "kernel/rcu/[^/]*:" $T/warnings > $T/cwarnings +cat $T/hwarnings $T/cwarnings > $T/rcuwarnings +if test -s $T/rcuwarnings then print_warning $title build errors: - egrep "rcu[^/]*\.c.*warning:|rcu.*\.h.*warning:" < $T + cat $T/rcuwarnings exit 2 fi exit 0 -- cgit v1.2.3 From 94162c8daa839bd0de791f66d754a880e2787c82 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Wed, 10 Dec 2014 17:42:16 -0800 Subject: rcutorture: Handle different mpstat versions The mpstat command recently added the %gnice column, which messes up the cpu2use.sh script's idle-CPU calculations. This commit therefore uses $NF instead of $12 to select the last (%idle) column. Signed-off-by: Paul E. McKenney --- tools/testing/selftests/rcutorture/bin/cpus2use.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/rcutorture/bin/cpus2use.sh b/tools/testing/selftests/rcutorture/bin/cpus2use.sh index abe14b7f36e9..bb99cde3f5f9 100755 --- a/tools/testing/selftests/rcutorture/bin/cpus2use.sh +++ b/tools/testing/selftests/rcutorture/bin/cpus2use.sh @@ -24,7 +24,7 @@ ncpus=`grep '^processor' /proc/cpuinfo | wc -l` idlecpus=`mpstat | tail -1 | \ - awk -v ncpus=$ncpus '{ print ncpus * ($7 + $12) / 100 }'` + awk -v ncpus=$ncpus '{ print ncpus * ($7 + $NF) / 100 }'` awk -v ncpus=$ncpus -v idlecpus=$idlecpus < /dev/null ' BEGIN { cpus2use = idlecpus; -- cgit v1.2.3 From 16c77ea7d0f4a74e49009aa2d26c275f7f93de7c Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Wed, 10 Dec 2014 17:43:58 -0800 Subject: torture: Add "-enable-kvm -soundhw pcspk" to qemu command line More recent qemu implementations really want "-enable-kvm", and the "-soundhw pcspk" makes the script a bit less dependent on odd audio libraries being installed. This commit therefore adds both to the default qemu command line. Signed-off-by: Paul E. McKenney --- tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh index 8ca9f21f2efc..35b8532ed053 100755 --- a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh +++ b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh @@ -8,9 +8,9 @@ # # Usage: kvm-test-1-run.sh config builddir resdir minutes qemu-args boot_args # -# qemu-args defaults to "-nographic", along with arguments specifying the -# number of CPUs and other options generated from -# the underlying CPU architecture. +# qemu-args defaults to "-enable-kvm -soundhw pcspk -nographic", along with +# arguments specifying the number of CPUs and other +# options generated from the underlying CPU architecture. # boot_args defaults to value returned by the per_version_boot_params # shell function. # @@ -138,7 +138,7 @@ then fi # Generate -smp qemu argument. -qemu_args="-nographic $qemu_args" +qemu_args="-enable-kvm -soundhw pcspk -nographic $qemu_args" cpu_count=`configNR_CPUS.sh $config_template` cpu_count=`configfrag_boot_cpus "$boot_args" "$config_template" "$cpu_count"` vcpus=`identify_qemu_vcpus` -- cgit v1.2.3 From d2f74b5b488dd2b283977f64844fee3ba91676db Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Thu, 11 Dec 2014 10:50:22 -0800 Subject: torture: Flag console.log file to prevent holdovers from earlier runs A system misconfiguration that prevents qemu from running at all (for example, a missing dynamically linked library) will keep the console.log file from the previous run. This can fool the developer into thinking that this failed run actually completed correctly. This commit therefore overwrites the console.log file just before launching qemu. Signed-off-by: Paul E. McKenney --- tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh index 35b8532ed053..5236e073919d 100755 --- a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh +++ b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh @@ -168,6 +168,7 @@ then touch $resdir/buildonly exit 0 fi +echo "NOTE: $QEMU either did not run or was interactive" > $builddir/console.log echo $QEMU $qemu_args -m 512 -kernel $resdir/bzImage -append \"$qemu_append $boot_args\" > $resdir/qemu-cmd ( $QEMU $qemu_args -m 512 -kernel $resdir/bzImage -append "$qemu_append $boot_args"; echo $? > $resdir/qemu-retval ) & qemu_pid=$! -- cgit v1.2.3 From ca04455fba937eb2d85f437900cd1726166192e6 Mon Sep 17 00:00:00 2001 From: Matej Muzila Date: Sun, 28 Dec 2014 15:54:13 +0100 Subject: tools: hv: Makefile: Add hv_fcopy_daemon to Makefile hv_fcopy_daemon is not mentioned in Makefile so it must be built manually. Add hv_fcopy_daemon to Makefile. Signed-off-by: Matej Muzila Signed-off-by: Greg Kroah-Hartman --- tools/hv/Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/hv/Makefile b/tools/hv/Makefile index bd22f786a60c..99ffe61051a7 100644 --- a/tools/hv/Makefile +++ b/tools/hv/Makefile @@ -5,9 +5,9 @@ PTHREAD_LIBS = -lpthread WARNINGS = -Wall -Wextra CFLAGS = $(WARNINGS) -g $(PTHREAD_LIBS) -all: hv_kvp_daemon hv_vss_daemon +all: hv_kvp_daemon hv_vss_daemon hv_fcopy_daemon %: %.c $(CC) $(CFLAGS) -o $@ $^ clean: - $(RM) hv_kvp_daemon hv_vss_daemon + $(RM) hv_kvp_daemon hv_vss_daemon hv_fcopy_daemon -- cgit v1.2.3 From 787d61822525295399f97390bca3e1bb4ce7a6b3 Mon Sep 17 00:00:00 2001 From: Dexuan Cui Date: Wed, 10 Dec 2014 03:33:20 -0800 Subject: tools: hv: kvp_daemon: make IPv6-only-injection work In the case the host only injects an IPv6 address, the dhcp_enabled flag is true (it's only for IPv4 according to Hyper-V host team), but we still need to proceed to parse the IPv6 information. Cc: K. Y. Srinivasan Signed-off-by: Dexuan Cui Reviewed-By: Vitaly Kuznetsov Signed-off-by: Greg Kroah-Hartman --- tools/hv/hv_kvp_daemon.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'tools') diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c index 6a6432a20a1d..4b3ee3521bde 100644 --- a/tools/hv/hv_kvp_daemon.c +++ b/tools/hv/hv_kvp_daemon.c @@ -1308,16 +1308,17 @@ static int kvp_set_ip_info(char *if_name, struct hv_kvp_ipaddr_value *new_val) if (error) goto setval_error; + /* + * The dhcp_enabled flag is only for IPv4. In the case the host only + * injects an IPv6 address, the flag is true, but we still need to + * proceed to parse and pass the IPv6 information to the + * disto-specific script hv_set_ifconfig. + */ if (new_val->dhcp_enabled) { error = kvp_write_file(file, "BOOTPROTO", "", "dhcp"); if (error) goto setval_error; - /* - * We are done!. - */ - goto setval_done; - } else { error = kvp_write_file(file, "BOOTPROTO", "", "none"); if (error) @@ -1345,7 +1346,6 @@ static int kvp_set_ip_info(char *if_name, struct hv_kvp_ipaddr_value *new_val) if (error) goto setval_error; -setval_done: fclose(file); /* -- cgit v1.2.3 From a7657a93d63d87399b53d15999e77973b4f02cf3 Mon Sep 17 00:00:00 2001 From: Robert Baldyga Date: Mon, 5 Jan 2015 10:44:44 +0100 Subject: tools: ffs-aio-example: add missing wMaxPacketSize for HS descs It's needed, to have more than 64 bytes of maxpacketsize. Signed-off-by: Robert Baldyga Signed-off-by: Felipe Balbi --- tools/usb/ffs-aio-example/simple/device_app/aio_simple.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'tools') diff --git a/tools/usb/ffs-aio-example/simple/device_app/aio_simple.c b/tools/usb/ffs-aio-example/simple/device_app/aio_simple.c index adc310a6d489..1f44a29818bf 100644 --- a/tools/usb/ffs-aio-example/simple/device_app/aio_simple.c +++ b/tools/usb/ffs-aio-example/simple/device_app/aio_simple.c @@ -103,12 +103,14 @@ static const struct { .bDescriptorType = USB_DT_ENDPOINT, .bEndpointAddress = 1 | USB_DIR_IN, .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = htole16(512), }, .bulk_source = { .bLength = sizeof(descriptors.hs_descs.bulk_source), .bDescriptorType = USB_DT_ENDPOINT, .bEndpointAddress = 2 | USB_DIR_OUT, .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = htole16(512), }, }, }; -- cgit v1.2.3 From 969678c09877fd1116be6ae304e59a27658226c2 Mon Sep 17 00:00:00 2001 From: Robert Baldyga Date: Tue, 13 Jan 2015 14:56:28 +0100 Subject: tools: ffs-aio-example: use endpoint addresses from descriptors This makes examples more platform independent and more compatible with USB standard, as endpoint addresses in given interface may differ between hardware platforms or even between configurations in single USB device. Signed-off-by: Robert Baldyga Signed-off-by: Felipe Balbi --- tools/usb/ffs-aio-example/multibuff/host_app/test.c | 14 ++++++++------ tools/usb/ffs-aio-example/simple/host_app/test.c | 17 ++++++++++------- 2 files changed, 18 insertions(+), 13 deletions(-) (limited to 'tools') diff --git a/tools/usb/ffs-aio-example/multibuff/host_app/test.c b/tools/usb/ffs-aio-example/multibuff/host_app/test.c index daa3abe6bebd..2cbcce6e8dd7 100644 --- a/tools/usb/ffs-aio-example/multibuff/host_app/test.c +++ b/tools/usb/ffs-aio-example/multibuff/host_app/test.c @@ -33,11 +33,6 @@ #define VENDOR 0x1d6b #define PRODUCT 0x0105 -/* endpoints indexes */ - -#define EP_BULK_IN (1 | LIBUSB_ENDPOINT_IN) -#define EP_BULK_OUT (2 | LIBUSB_ENDPOINT_OUT) - #define BUF_LEN 8192 /* @@ -159,14 +154,21 @@ void test_exit(struct test_state *state) int main(void) { struct test_state state; + struct libusb_config_descriptor *conf; + struct libusb_interface_descriptor const *iface; + unsigned char addr; if (test_init(&state)) return 1; + libusb_get_config_descriptor(state.found, 0, &conf); + iface = &conf->interface[0].altsetting[0]; + addr = iface->endpoint[0].bEndpointAddress; + while (1) { static unsigned char buffer[BUF_LEN]; int bytes; - libusb_bulk_transfer(state.handle, EP_BULK_IN, buffer, BUF_LEN, + libusb_bulk_transfer(state.handle, addr, buffer, BUF_LEN, &bytes, 500); } test_exit(&state); diff --git a/tools/usb/ffs-aio-example/simple/host_app/test.c b/tools/usb/ffs-aio-example/simple/host_app/test.c index acd6332811f3..aed86ffff280 100644 --- a/tools/usb/ffs-aio-example/simple/host_app/test.c +++ b/tools/usb/ffs-aio-example/simple/host_app/test.c @@ -33,11 +33,6 @@ #define VENDOR 0x1d6b #define PRODUCT 0x0105 -/* endpoints indexes */ - -#define EP_BULK_IN (1 | LIBUSB_ENDPOINT_IN) -#define EP_BULK_OUT (2 | LIBUSB_ENDPOINT_OUT) - #define BUF_LEN 8192 /* @@ -159,16 +154,24 @@ void test_exit(struct test_state *state) int main(void) { struct test_state state; + struct libusb_config_descriptor *conf; + struct libusb_interface_descriptor const *iface; + unsigned char in_addr, out_addr; if (test_init(&state)) return 1; + libusb_get_config_descriptor(state.found, 0, &conf); + iface = &conf->interface[0].altsetting[0]; + in_addr = iface->endpoint[0].bEndpointAddress; + out_addr = iface->endpoint[1].bEndpointAddress; + while (1) { static unsigned char buffer[BUF_LEN]; int bytes; - libusb_bulk_transfer(state.handle, EP_BULK_IN, buffer, BUF_LEN, + libusb_bulk_transfer(state.handle, in_addr, buffer, BUF_LEN, &bytes, 500); - libusb_bulk_transfer(state.handle, EP_BULK_OUT, buffer, BUF_LEN, + libusb_bulk_transfer(state.handle, out_addr, buffer, BUF_LEN, &bytes, 500); } test_exit(&state); -- cgit v1.2.3 From 67121f85e464d66596f99afd8d188c1ae892f8fb Mon Sep 17 00:00:00 2001 From: Stephane Eranian Date: Wed, 17 Dec 2014 16:23:55 +0100 Subject: perf mem: Enable sampling loads and stores simultaneously This patch modifies perf mem to default to sampling loads and stores simultaneously. It could only do one or the other before yet there was no hardware restriction preventing simultaneous collection. With this patch, one run is sufficient to collect both. It is still possible to sample only loads or stores by using the -t option: $ perf mem -t load rec $ perf mem -t load rep Or $ perf mem -t store rec $ perf mem -t store rep The perf report TUI will show one event at a time. The store output will contain a Weight column which will be empty. In V2, we updated the man pages to reflect the change and also simplify the initialization of the argv vector passed to the cmd_*() functions as per LKML feedback. In V3, we fixed typos in the changelog. Signed-off-by: Stephane Eranian Cc: Andi Kleen Cc: David Ahern Cc: Don Zickus Cc: Ingo Molnar Cc: Jiri Olsa Cc: Joe Mario Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Richard Fowles Link: http://lkml.kernel.org/r/20141217152355.GA10053@thinkpad Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-mem.txt | 9 +-- tools/perf/builtin-mem.c | 123 +++++++++++++++++++++++++++------- 2 files changed, 105 insertions(+), 27 deletions(-) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-mem.txt b/tools/perf/Documentation/perf-mem.txt index 1d78a4064da4..43310d8661fe 100644 --- a/tools/perf/Documentation/perf-mem.txt +++ b/tools/perf/Documentation/perf-mem.txt @@ -12,11 +12,12 @@ SYNOPSIS DESCRIPTION ----------- -"perf mem -t record" runs a command and gathers memory operation data +"perf mem record" runs a command and gathers memory operation data from it, into perf.data. Perf record options are accepted and are passed through. -"perf mem -t report" displays the result. It invokes perf report with the -right set of options to display a memory access profile. +"perf mem report" displays the result. It invokes perf report with the +right set of options to display a memory access profile. By default, loads +and stores are sampled. Use the -t option to limit to loads or stores. Note that on Intel systems the memory latency reported is the use-latency, not the pure load (or store latency). Use latency includes any pipeline @@ -29,7 +30,7 @@ OPTIONS -t:: --type=:: - Select the memory operation type: load or store (default: load) + Select the memory operation type: load or store (default: load,store) -D:: --dump-raw-samples=:: diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c index 24db6ffe2957..1eded0a3a509 100644 --- a/tools/perf/builtin-mem.c +++ b/tools/perf/builtin-mem.c @@ -7,10 +7,13 @@ #include "util/session.h" #include "util/data.h" -#define MEM_OPERATION_LOAD "load" -#define MEM_OPERATION_STORE "store" +#define MEM_OPERATION_LOAD 0x1 +#define MEM_OPERATION_STORE 0x2 -static const char *mem_operation = MEM_OPERATION_LOAD; +/* + * default to both load an store sampling + */ +static int mem_operation = MEM_OPERATION_LOAD | MEM_OPERATION_STORE; struct perf_mem { struct perf_tool tool; @@ -25,26 +28,30 @@ static int __cmd_record(int argc, const char **argv) { int rec_argc, i = 0, j; const char **rec_argv; - char event[64]; int ret; - rec_argc = argc + 4; + rec_argc = argc + 7; /* max number of arguments */ rec_argv = calloc(rec_argc + 1, sizeof(char *)); if (!rec_argv) return -1; - rec_argv[i++] = strdup("record"); - if (!strcmp(mem_operation, MEM_OPERATION_LOAD)) - rec_argv[i++] = strdup("-W"); - rec_argv[i++] = strdup("-d"); - rec_argv[i++] = strdup("-e"); + rec_argv[i++] = "record"; - if (strcmp(mem_operation, MEM_OPERATION_LOAD)) - sprintf(event, "cpu/mem-stores/pp"); - else - sprintf(event, "cpu/mem-loads/pp"); + if (mem_operation & MEM_OPERATION_LOAD) + rec_argv[i++] = "-W"; + + rec_argv[i++] = "-d"; + + if (mem_operation & MEM_OPERATION_LOAD) { + rec_argv[i++] = "-e"; + rec_argv[i++] = "cpu/mem-loads/pp"; + } + + if (mem_operation & MEM_OPERATION_STORE) { + rec_argv[i++] = "-e"; + rec_argv[i++] = "cpu/mem-stores/pp"; + } - rec_argv[i++] = strdup(event); for (j = 1; j < argc; j++, i++) rec_argv[i] = argv[j]; @@ -162,17 +169,17 @@ static int report_events(int argc, const char **argv, struct perf_mem *mem) if (!rep_argv) return -1; - rep_argv[i++] = strdup("report"); - rep_argv[i++] = strdup("--mem-mode"); - rep_argv[i++] = strdup("-n"); /* display number of samples */ + rep_argv[i++] = "report"; + rep_argv[i++] = "--mem-mode"; + rep_argv[i++] = "-n"; /* display number of samples */ /* * there is no weight (cost) associated with stores, so don't print * the column */ - if (strcmp(mem_operation, MEM_OPERATION_LOAD)) - rep_argv[i++] = strdup("--sort=mem,sym,dso,symbol_daddr," - "dso_daddr,tlb,locked"); + if (!(mem_operation & MEM_OPERATION_LOAD)) + rep_argv[i++] = "--sort=mem,sym,dso,symbol_daddr," + "dso_daddr,tlb,locked"; for (j = 1; j < argc; j++, i++) rep_argv[i] = argv[j]; @@ -182,6 +189,75 @@ static int report_events(int argc, const char **argv, struct perf_mem *mem) return ret; } +struct mem_mode { + const char *name; + int mode; +}; + +#define MEM_OPT(n, m) \ + { .name = n, .mode = (m) } + +#define MEM_END { .name = NULL } + +static const struct mem_mode mem_modes[]={ + MEM_OPT("load", MEM_OPERATION_LOAD), + MEM_OPT("store", MEM_OPERATION_STORE), + MEM_END +}; + +static int +parse_mem_ops(const struct option *opt, const char *str, int unset) +{ + int *mode = (int *)opt->value; + const struct mem_mode *m; + char *s, *os = NULL, *p; + int ret = -1; + + if (unset) + return 0; + + /* str may be NULL in case no arg is passed to -t */ + if (str) { + /* because str is read-only */ + s = os = strdup(str); + if (!s) + return -1; + + /* reset mode */ + *mode = 0; + + for (;;) { + p = strchr(s, ','); + if (p) + *p = '\0'; + + for (m = mem_modes; m->name; m++) { + if (!strcasecmp(s, m->name)) + break; + } + if (!m->name) { + fprintf(stderr, "unknown sampling op %s," + " check man page\n", s); + goto error; + } + + *mode |= m->mode; + + if (!p) + break; + + s = p + 1; + } + } + ret = 0; + + if (*mode == 0) + *mode = MEM_OPERATION_LOAD; +error: + free(os); + return ret; +} + int cmd_mem(int argc, const char **argv, const char *prefix __maybe_unused) { struct stat st; @@ -199,8 +275,9 @@ int cmd_mem(int argc, const char **argv, const char *prefix __maybe_unused) .input_name = "perf.data", }; const struct option mem_options[] = { - OPT_STRING('t', "type", &mem_operation, - "type", "memory operations(load/store)"), + OPT_CALLBACK('t', "type", &mem_operation, + "type", "memory operations(load,store) Default load,store", + parse_mem_ops), OPT_BOOLEAN('D', "dump-raw-samples", &mem.dump_raw, "dump raw samples in ASCII"), OPT_BOOLEAN('U', "hide-unresolved", &mem.hide_unresolved, -- cgit v1.2.3 From 6602412215c26cd94af1b78fef56b78a5027b19b Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 17 Dec 2014 13:53:27 -0300 Subject: perf mem: Move the mem_operations global to struct perf_mem Just like the other parameters, grouping it on the builtin-mem specific config area: struct perf_mem. Acked-by: Stephane Eranian Cc: Andi Kleen Cc: David Ahern Cc: Don Zickus Cc: Ingo Molnar Cc: Jiri Olsa Cc: Joe Mario Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Richard Fowles Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-ad8ns5l51ongemfsir3zy09x@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-mem.c | 26 +++++++++++++------------- 1 file changed, 13 insertions(+), 13 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c index 1eded0a3a509..9b5663950a4d 100644 --- a/tools/perf/builtin-mem.c +++ b/tools/perf/builtin-mem.c @@ -10,21 +10,17 @@ #define MEM_OPERATION_LOAD 0x1 #define MEM_OPERATION_STORE 0x2 -/* - * default to both load an store sampling - */ -static int mem_operation = MEM_OPERATION_LOAD | MEM_OPERATION_STORE; - struct perf_mem { struct perf_tool tool; char const *input_name; bool hide_unresolved; bool dump_raw; + int operation; const char *cpu_list; DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS); }; -static int __cmd_record(int argc, const char **argv) +static int __cmd_record(int argc, const char **argv, struct perf_mem *mem) { int rec_argc, i = 0, j; const char **rec_argv; @@ -37,17 +33,17 @@ static int __cmd_record(int argc, const char **argv) rec_argv[i++] = "record"; - if (mem_operation & MEM_OPERATION_LOAD) + if (mem->operation & MEM_OPERATION_LOAD) rec_argv[i++] = "-W"; rec_argv[i++] = "-d"; - if (mem_operation & MEM_OPERATION_LOAD) { + if (mem->operation & MEM_OPERATION_LOAD) { rec_argv[i++] = "-e"; rec_argv[i++] = "cpu/mem-loads/pp"; } - if (mem_operation & MEM_OPERATION_STORE) { + if (mem->operation & MEM_OPERATION_STORE) { rec_argv[i++] = "-e"; rec_argv[i++] = "cpu/mem-stores/pp"; } @@ -177,7 +173,7 @@ static int report_events(int argc, const char **argv, struct perf_mem *mem) * there is no weight (cost) associated with stores, so don't print * the column */ - if (!(mem_operation & MEM_OPERATION_LOAD)) + if (!(mem->operation & MEM_OPERATION_LOAD)) rep_argv[i++] = "--sort=mem,sym,dso,symbol_daddr," "dso_daddr,tlb,locked"; @@ -273,9 +269,13 @@ int cmd_mem(int argc, const char **argv, const char *prefix __maybe_unused) .ordered_events = true, }, .input_name = "perf.data", + /* + * default to both load an store sampling + */ + .operation = MEM_OPERATION_LOAD | MEM_OPERATION_STORE, }; const struct option mem_options[] = { - OPT_CALLBACK('t', "type", &mem_operation, + OPT_CALLBACK('t', "type", &mem.operation, "type", "memory operations(load,store) Default load,store", parse_mem_ops), OPT_BOOLEAN('D', "dump-raw-samples", &mem.dump_raw, @@ -302,7 +302,7 @@ int cmd_mem(int argc, const char **argv, const char *prefix __maybe_unused) argc = parse_options_subcommand(argc, argv, mem_options, mem_subcommands, mem_usage, PARSE_OPT_STOP_AT_NON_OPTION); - if (!argc || !(strncmp(argv[0], "rec", 3) || mem_operation)) + if (!argc || !(strncmp(argv[0], "rec", 3) || mem.operation)) usage_with_options(mem_usage, mem_options); if (!mem.input_name || !strlen(mem.input_name)) { @@ -313,7 +313,7 @@ int cmd_mem(int argc, const char **argv, const char *prefix __maybe_unused) } if (!strncmp(argv[0], "rec", 3)) - return __cmd_record(argc, argv); + return __cmd_record(argc, argv, &mem); else if (!strncmp(argv[0], "rep", 3)) return report_events(argc, argv, &mem); else -- cgit v1.2.3 From 48000a1aed7422a833220245da43114012c355d7 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 17 Dec 2014 17:24:45 -0300 Subject: perf tools: Remove EOL whitespaces Janitorial stuff: boredom moment. Cc: Adrian Hunter Cc: Borislav Petkov Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-u70i7shys3kths4hzru72bha@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-buildid-cache.txt | 2 +- tools/perf/Documentation/perf-script.txt | 28 ++++---- tools/perf/builtin-buildid-cache.c | 4 +- tools/perf/builtin-stat.c | 2 +- tools/perf/builtin-top.c | 2 +- tools/perf/builtin-trace.c | 80 +++++++++++----------- tools/perf/tests/attr.py | 1 - tools/perf/tests/make | 1 - tools/perf/tests/parse-events.c | 2 +- tools/perf/ui/browsers/annotate.c | 3 +- tools/perf/ui/progress.h | 4 +- tools/perf/util/annotate.c | 2 +- tools/perf/util/parse-events.c | 6 +- tools/perf/util/python.c | 2 +- .../util/scripting-engines/trace-event-python.c | 2 +- tools/perf/util/session.c | 2 +- tools/perf/util/symbol.c | 2 +- 17 files changed, 71 insertions(+), 74 deletions(-) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-buildid-cache.txt b/tools/perf/Documentation/perf-buildid-cache.txt index fd77d81ea748..0294c57b1f5e 100644 --- a/tools/perf/Documentation/perf-buildid-cache.txt +++ b/tools/perf/Documentation/perf-buildid-cache.txt @@ -38,7 +38,7 @@ OPTIONS --remove=:: Remove specified file from the cache. -M:: ---missing=:: +--missing=:: List missing build ids in the cache for the specified file. -u:: --update:: diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt index 21494806c0ab..a21eec05bc42 100644 --- a/tools/perf/Documentation/perf-script.txt +++ b/tools/perf/Documentation/perf-script.txt @@ -125,46 +125,46 @@ OPTIONS is equivalent to: perf script -f trace: -f sw: -f hw: - + i.e., the specified fields apply to all event types if the type string is not given. - + The arguments are processed in the order received. A later usage can reset a prior request. e.g.: - + -f trace: -f comm,tid,time,ip,sym - + The first -f suppresses trace events (field list is ""), but then the second invocation sets the fields to comm,tid,time,ip,sym. In this case a warning is given to the user: - + "Overriding previous field request for all events." - + Alternatively, consider the order: - + -f comm,tid,time,ip,sym -f trace: - + The first -f sets the fields for all events and the second -f suppresses trace events. The user is given a warning message about the override, and the result of the above is that only S/W and H/W events are displayed with the given fields. - + For the 'wildcard' option if a user selected field is invalid for an event type, a message is displayed to the user that the option is ignored for that type. For example: - + $ perf script -f comm,tid,trace 'trace' not valid for hardware events. Ignoring. 'trace' not valid for software events. Ignoring. - + Alternatively, if the type is given an invalid field is specified it is an error. For example: - + perf script -v -f sw:comm,tid,trace 'trace' not valid for software events. - + At this point usage is displayed, and perf-script exits. - + Finally, a user may not set fields to none for all event types. i.e., -f "" is not allowed. diff --git a/tools/perf/builtin-buildid-cache.c b/tools/perf/builtin-buildid-cache.c index 77d5cae54c6a..50e6b66aea1f 100644 --- a/tools/perf/builtin-buildid-cache.c +++ b/tools/perf/builtin-buildid-cache.c @@ -236,10 +236,10 @@ static bool dso__missing_buildid_cache(struct dso *dso, int parm __maybe_unused) if (errno == ENOENT) return false; - pr_warning("Problems with %s file, consider removing it from the cache\n", + pr_warning("Problems with %s file, consider removing it from the cache\n", filename); } else if (memcmp(dso->build_id, build_id, sizeof(dso->build_id))) { - pr_warning("Problems with %s file, consider removing it from the cache\n", + pr_warning("Problems with %s file, consider removing it from the cache\n", filename); } diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 891086376381..e598e4e98170 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -1730,7 +1730,7 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused) "detailed run - start a lot of events"), OPT_BOOLEAN('S', "sync", &sync_run, "call sync() before starting a run"), - OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL, + OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL, "print large numbers with thousands\' separators", stat__set_big_num), OPT_STRING('C', "cpu", &target.cpu_list, "cpu", diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 616f0fcb4701..c4c7eac69de4 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -165,7 +165,7 @@ static void ui__warn_map_erange(struct map *map, struct symbol *sym, u64 ip) err ? "[unknown]" : uts.release, perf_version_string); if (use_browser <= 0) sleep(5); - + map->erange_warned = true; } diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index badfabc6a01f..258f6550c736 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -929,66 +929,66 @@ static struct syscall_fmt { .arg_scnprintf = { [0] = SCA_HEX, /* brk */ }, }, { .name = "clock_gettime", .errmsg = true, STRARRAY(0, clk_id, clockid), }, { .name = "close", .errmsg = true, - .arg_scnprintf = { [0] = SCA_CLOSE_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_CLOSE_FD, /* fd */ }, }, { .name = "connect", .errmsg = true, }, { .name = "dup", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "dup2", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "dup3", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "epoll_ctl", .errmsg = true, STRARRAY(1, op, epoll_ctl_ops), }, { .name = "eventfd2", .errmsg = true, .arg_scnprintf = { [1] = SCA_EFD_FLAGS, /* flags */ }, }, { .name = "faccessat", .errmsg = true, .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, { .name = "fadvise64", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "fallocate", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "fchdir", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "fchmod", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "fchmodat", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, }, { .name = "fchown", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "fchownat", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, }, { .name = "fcntl", .errmsg = true, .arg_scnprintf = { [0] = SCA_FD, /* fd */ [1] = SCA_STRARRAY, /* cmd */ }, .arg_parm = { [1] = &strarray__fcntl_cmds, /* cmd */ }, }, { .name = "fdatasync", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "flock", .errmsg = true, .arg_scnprintf = { [0] = SCA_FD, /* fd */ [1] = SCA_FLOCK, /* cmd */ }, }, { .name = "fsetxattr", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "fstat", .errmsg = true, .alias = "newfstat", - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "fstatat", .errmsg = true, .alias = "newfstatat", - .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, + .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, { .name = "fstatfs", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "fsync", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "ftruncate", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "futex", .errmsg = true, .arg_scnprintf = { [1] = SCA_FUTEX_OP, /* op */ }, }, { .name = "futimesat", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, }, { .name = "getdents", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "getdents64", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "getitimer", .errmsg = true, STRARRAY(0, which, itimers), }, { .name = "getrlimit", .errmsg = true, STRARRAY(0, resource, rlimit_resources), }, { .name = "ioctl", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ + .arg_scnprintf = { [0] = SCA_FD, /* fd */ #if defined(__i386__) || defined(__x86_64__) /* * FIXME: Make this available to all arches. @@ -1002,7 +1002,7 @@ static struct syscall_fmt { { .name = "kill", .errmsg = true, .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, }, { .name = "linkat", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, }, { .name = "lseek", .errmsg = true, .arg_scnprintf = { [0] = SCA_FD, /* fd */ [2] = SCA_STRARRAY, /* whence */ }, @@ -1012,9 +1012,9 @@ static struct syscall_fmt { .arg_scnprintf = { [0] = SCA_HEX, /* start */ [2] = SCA_MADV_BHV, /* behavior */ }, }, { .name = "mkdirat", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, }, { .name = "mknodat", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, }, { .name = "mlock", .errmsg = true, .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, }, { .name = "mlockall", .errmsg = true, @@ -1036,9 +1036,9 @@ static struct syscall_fmt { { .name = "munmap", .errmsg = true, .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, }, { .name = "name_to_handle_at", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, + .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, { .name = "newfstatat", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, + .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, { .name = "open", .errmsg = true, .arg_scnprintf = { [1] = SCA_OPEN_FLAGS, /* flags */ }, }, { .name = "open_by_handle_at", .errmsg = true, @@ -1052,20 +1052,20 @@ static struct syscall_fmt { { .name = "poll", .errmsg = true, .timeout = true, }, { .name = "ppoll", .errmsg = true, .timeout = true, }, { .name = "pread", .errmsg = true, .alias = "pread64", - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "preadv", .errmsg = true, .alias = "pread", - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "prlimit64", .errmsg = true, STRARRAY(1, resource, rlimit_resources), }, { .name = "pwrite", .errmsg = true, .alias = "pwrite64", - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "pwritev", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "read", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "readlinkat", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, + .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, { .name = "readv", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "recvfrom", .errmsg = true, .arg_scnprintf = { [3] = SCA_MSG_FLAGS, /* flags */ }, }, { .name = "recvmmsg", .errmsg = true, @@ -1073,7 +1073,7 @@ static struct syscall_fmt { { .name = "recvmsg", .errmsg = true, .arg_scnprintf = { [2] = SCA_MSG_FLAGS, /* flags */ }, }, { .name = "renameat", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, + .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, { .name = "rt_sigaction", .errmsg = true, .arg_scnprintf = { [0] = SCA_SIGNUM, /* sig */ }, }, { .name = "rt_sigprocmask", .errmsg = true, STRARRAY(0, how, sighow), }, @@ -1091,7 +1091,7 @@ static struct syscall_fmt { { .name = "setitimer", .errmsg = true, STRARRAY(0, which, itimers), }, { .name = "setrlimit", .errmsg = true, STRARRAY(0, resource, rlimit_resources), }, { .name = "shutdown", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "socket", .errmsg = true, .arg_scnprintf = { [0] = SCA_STRARRAY, /* family */ [1] = SCA_SK_TYPE, /* type */ }, @@ -1102,7 +1102,7 @@ static struct syscall_fmt { .arg_parm = { [0] = &strarray__socket_families, /* family */ }, }, { .name = "stat", .errmsg = true, .alias = "newstat", }, { .name = "symlinkat", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, + .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, { .name = "tgkill", .errmsg = true, .arg_scnprintf = { [2] = SCA_SIGNUM, /* sig */ }, }, { .name = "tkill", .errmsg = true, @@ -1113,9 +1113,9 @@ static struct syscall_fmt { { .name = "utimensat", .errmsg = true, .arg_scnprintf = { [0] = SCA_FDAT, /* dirfd */ }, }, { .name = "write", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, { .name = "writev", .errmsg = true, - .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, + .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, }; static int syscall_fmt__cmp(const void *name, const void *fmtp) @@ -1191,7 +1191,7 @@ static struct thread_trace *thread__trace(struct thread *thread, FILE *fp) if (thread__priv(thread) == NULL) thread__set_priv(thread, thread_trace__new()); - + if (thread__priv(thread) == NULL) goto fail; diff --git a/tools/perf/tests/attr.py b/tools/perf/tests/attr.py index c9b4b6269b51..1091bd47adfd 100644 --- a/tools/perf/tests/attr.py +++ b/tools/perf/tests/attr.py @@ -104,7 +104,6 @@ class Event(dict): continue if not self.compare_data(self[t], other[t]): log.warning("expected %s=%s, got %s" % (t, self[t], other[t])) - # Test file description needs to have following sections: # [config] diff --git a/tools/perf/tests/make b/tools/perf/tests/make index 69a71ff84e01..75709d2b17b4 100644 --- a/tools/perf/tests/make +++ b/tools/perf/tests/make @@ -222,7 +222,6 @@ tarpkg: @cmd="$(PERF)/tests/perf-targz-src-pkg $(PERF)"; \ echo "- $@: $$cmd" && echo $$cmd > $@ && \ ( eval $$cmd ) >> $@ 2>&1 - all: $(run) $(run_O) tarpkg @echo OK diff --git a/tools/perf/tests/parse-events.c b/tools/perf/tests/parse-events.c index 7f2f51f93619..d188e20d958f 100644 --- a/tools/perf/tests/parse-events.c +++ b/tools/perf/tests/parse-events.c @@ -1471,7 +1471,7 @@ static int test_event(struct evlist_test *e) } else { ret = e->check(evlist); } - + perf_evlist__delete(evlist); return ret; diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c index 1e0a2fd80115..9d32e3c0cfee 100644 --- a/tools/perf/ui/browsers/annotate.c +++ b/tools/perf/ui/browsers/annotate.c @@ -517,7 +517,7 @@ static bool annotate_browser__jump(struct annotate_browser *browser) } annotate_browser__set_top(browser, dl, idx); - + return true; } @@ -867,7 +867,6 @@ static void annotate_browser__mark_jump_targets(struct annotate_browser *browser ++browser->nr_jumps; } - } static inline int width_jumps(int n) diff --git a/tools/perf/ui/progress.h b/tools/perf/ui/progress.h index f34f89eb607c..717d39d3052b 100644 --- a/tools/perf/ui/progress.h +++ b/tools/perf/ui/progress.h @@ -4,12 +4,12 @@ #include void ui_progress__finish(void); - + struct ui_progress { const char *title; u64 curr, next, step, total; }; - + void ui_progress__init(struct ui_progress *p, u64 total, const char *title); void ui_progress__update(struct ui_progress *p, u64 adv); diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index 01bc4e23a2cf..61bf9128e1f2 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -239,7 +239,7 @@ static int mov__parse(struct ins_operands *ops) *s = '\0'; ops->source.raw = strdup(ops->raw); *s = ','; - + if (ops->source.raw == NULL) return -1; diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 77b43fe43d55..f36b80ecaf52 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -1121,7 +1121,7 @@ void print_tracepoint_events(const char *subsys_glob, const char *event_glob, return; for_each_subsystem(sys_dir, sys_dirent, sys_next) { - if (subsys_glob != NULL && + if (subsys_glob != NULL && !strglobmatch(sys_dirent.d_name, subsys_glob)) continue; @@ -1132,7 +1132,7 @@ void print_tracepoint_events(const char *subsys_glob, const char *event_glob, continue; for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) { - if (event_glob != NULL && + if (event_glob != NULL && !strglobmatch(evt_dirent.d_name, event_glob)) continue; @@ -1305,7 +1305,7 @@ static void print_symbol_events(const char *event_glob, unsigned type, for (i = 0; i < max; i++, syms++) { - if (event_glob != NULL && + if (event_glob != NULL && !(strglobmatch(syms->symbol, event_glob) || (syms->alias && strglobmatch(syms->alias, event_glob)))) continue; diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c index 3dda85ca50c1..d906d0ad5d40 100644 --- a/tools/perf/util/python.c +++ b/tools/perf/util/python.c @@ -768,7 +768,7 @@ static PyObject *pyrf_evlist__get_pollfd(struct pyrf_evlist *pevlist, Py_DECREF(file); goto free_list; } - + Py_DECREF(file); } diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c index d808a328f4dc..0c815a40a6e8 100644 --- a/tools/perf/util/scripting-engines/trace-event-python.c +++ b/tools/perf/util/scripting-engines/trace-event-python.c @@ -89,7 +89,7 @@ static void handler_call_die(const char *handler_name) /* * Insert val into into the dictionary and decrement the reference counter. - * This is necessary for dictionaries since PyDict_SetItemString() does not + * This is necessary for dictionaries since PyDict_SetItemString() does not * steal a reference, as opposed to PyTuple_SetItem(). */ static void pydict_set_item_string_decref(PyObject *dict, const char *key, PyObject *val) diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 5f0e05a76c05..b0ce3d6e6231 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -274,7 +274,7 @@ void perf_tool__fill_defaults(struct perf_tool *tool) if (tool->id_index == NULL) tool->id_index = process_id_index_stub; } - + static void swap_sample_id_all(union perf_event *event, void *data) { void *end = (void *) event + event->header.size; diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index a194702a0a2f..a69066865a55 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -685,7 +685,7 @@ static int dso__split_kallsyms(struct dso *dso, struct map *map, u64 delta, struct machine *machine = kmaps->machine; struct map *curr_map = map; struct symbol *pos; - int count = 0, moved = 0; + int count = 0, moved = 0; struct rb_root *root = &dso->symbols[map->type]; struct rb_node *next = rb_first(root); int kernel_range = 0; -- cgit v1.2.3 From 6733d1bf7f77967747a5f85b832eaf4dba5999df Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Fri, 19 Dec 2014 12:31:40 -0300 Subject: perf hists: Rename hist_entry__free to __delete No logic changes, just to be consistent. Cc: Adrian Hunter Cc: Borislav Petkov Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-f7n5y0mvk6gew5185h6fg316@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-diff.c | 2 +- tools/perf/tests/hists_cumulate.c | 2 +- tools/perf/tests/hists_output.c | 2 +- tools/perf/util/hist.c | 8 ++++---- tools/perf/util/hist.h | 2 +- 5 files changed, 8 insertions(+), 8 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index 1fd96c13f199..318ab9c3f0ba 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -430,7 +430,7 @@ static void hists__baseline_only(struct hists *hists) next = rb_next(&he->rb_node_in); if (!hist_entry__next_pair(he)) { rb_erase(&he->rb_node_in, root); - hist_entry__free(he); + hist_entry__delete(he); } } } diff --git a/tools/perf/tests/hists_cumulate.c b/tools/perf/tests/hists_cumulate.c index 8d110dec393e..18619966454c 100644 --- a/tools/perf/tests/hists_cumulate.c +++ b/tools/perf/tests/hists_cumulate.c @@ -140,7 +140,7 @@ static void del_hist_entries(struct hists *hists) he = rb_entry(node, struct hist_entry, rb_node); rb_erase(node, root_out); rb_erase(&he->rb_node_in, root_in); - hist_entry__free(he); + hist_entry__delete(he); } } diff --git a/tools/perf/tests/hists_output.c b/tools/perf/tests/hists_output.c index f5547610da02..b52c9faea224 100644 --- a/tools/perf/tests/hists_output.c +++ b/tools/perf/tests/hists_output.c @@ -106,7 +106,7 @@ static void del_hist_entries(struct hists *hists) he = rb_entry(node, struct hist_entry, rb_node); rb_erase(node, root_out); rb_erase(&he->rb_node_in, root_in); - hist_entry__free(he); + hist_entry__delete(he); } } diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index 182395546ddc..b4492de326ef 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -267,7 +267,7 @@ void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel) if (!n->filtered) --hists->nr_non_filtered_entries; - hist_entry__free(n); + hist_entry__delete(n); } } } @@ -290,7 +290,7 @@ void hists__delete_entries(struct hists *hists) if (!n->filtered) --hists->nr_non_filtered_entries; - hist_entry__free(n); + hist_entry__delete(n); } } @@ -941,7 +941,7 @@ hist_entry__collapse(struct hist_entry *left, struct hist_entry *right) return cmp; } -void hist_entry__free(struct hist_entry *he) +void hist_entry__delete(struct hist_entry *he) { zfree(&he->branch_info); zfree(&he->mem_info); @@ -981,7 +981,7 @@ static bool hists__collapse_insert_entry(struct hists *hists __maybe_unused, iter->callchain, he->callchain); } - hist_entry__free(he); + hist_entry__delete(he); return false; } diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index 46bd50344f85..9305580cd53e 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -119,7 +119,7 @@ int64_t hist_entry__collapse(struct hist_entry *left, struct hist_entry *right); int hist_entry__transaction_len(void); int hist_entry__sort_snprintf(struct hist_entry *he, char *bf, size_t size, struct hists *hists); -void hist_entry__free(struct hist_entry *); +void hist_entry__delete(struct hist_entry *he); void hists__output_resort(struct hists *hists, struct ui_progress *prog); void hists__collapse_resort(struct hists *hists, struct ui_progress *prog); -- cgit v1.2.3 From 956b65e1a7a6f10e630ee7f2f2f9de3aab001527 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Fri, 19 Dec 2014 12:41:28 -0300 Subject: perf hists: Introduce function for deleting/removing hist_entry The code being used when decaying and deleting entries from a hists instance was the same, provide a function to avoid code dup. Cc: Adrian Hunter Cc: Borislav Petkov Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-j6ideab7lkakavfvfguw858z@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/hist.c | 36 ++++++++++++++++-------------------- 1 file changed, 16 insertions(+), 20 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index b4492de326ef..038483a24a54 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -241,6 +241,20 @@ static bool hists__decay_entry(struct hists *hists, struct hist_entry *he) return he->stat.period == 0; } +static void hists__delete_entry(struct hists *hists, struct hist_entry *he) +{ + rb_erase(&he->rb_node, &hists->entries); + + if (sort__need_collapse) + rb_erase(&he->rb_node_in, &hists->entries_collapsed); + + --hists->nr_entries; + if (!he->filtered) + --hists->nr_non_filtered_entries; + + hist_entry__delete(he); +} + void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel) { struct rb_node *next = rb_first(&hists->entries); @@ -258,16 +272,7 @@ void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel) (zap_kernel && n->level != '.') || hists__decay_entry(hists, n)) && !n->used) { - rb_erase(&n->rb_node, &hists->entries); - - if (sort__need_collapse) - rb_erase(&n->rb_node_in, &hists->entries_collapsed); - - --hists->nr_entries; - if (!n->filtered) - --hists->nr_non_filtered_entries; - - hist_entry__delete(n); + hists__delete_entry(hists, n); } } } @@ -281,16 +286,7 @@ void hists__delete_entries(struct hists *hists) n = rb_entry(next, struct hist_entry, rb_node); next = rb_next(&n->rb_node); - rb_erase(&n->rb_node, &hists->entries); - - if (sort__need_collapse) - rb_erase(&n->rb_node_in, &hists->entries_collapsed); - - --hists->nr_entries; - if (!n->filtered) - --hists->nr_non_filtered_entries; - - hist_entry__delete(n); + hists__delete_entry(hists, n); } } -- cgit v1.2.3 From 590cd344e2099c7b040b29d3a711b4c26358def5 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Mon, 22 Dec 2014 13:44:09 +0900 Subject: perf report: Get rid of report__inc_stat() The report__inc_stat() function collects the number of hist entries in the session in order to calculate the max size of the progess bar. It'd be better if it does it during the addition of hist entries so that it can be used by other places too. Signed-off-by: Namhyung Kim Cc: Adrian Hunter Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1419223455-4362-2-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-report.c | 16 +++------------- tools/perf/util/hist.c | 2 ++ 2 files changed, 5 insertions(+), 13 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 072ae8ad67fc..2f91094e228b 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -86,17 +86,6 @@ static int report__config(const char *var, const char *value, void *cb) return perf_default_config(var, value, cb); } -static void report__inc_stats(struct report *rep, struct hist_entry *he) -{ - /* - * The @he is either of a newly created one or an existing one - * merging current sample. We only want to count a new one so - * checking ->nr_events being 1. - */ - if (he->stat.nr_events == 1) - rep->nr_entries++; -} - static int hist_iter__report_callback(struct hist_entry_iter *iter, struct addr_location *al, bool single, void *arg) @@ -108,8 +97,6 @@ static int hist_iter__report_callback(struct hist_entry_iter *iter, struct mem_info *mi; struct branch_info *bi; - report__inc_stats(rep, he); - if (!ui__has_annotation()) return 0; @@ -499,6 +486,9 @@ static int __cmd_report(struct report *rep) report__warn_kptr_restrict(rep); + evlist__for_each(session->evlist, pos) + rep->nr_entries += evsel__hists(pos)->nr_entries; + if (use_browser == 0) { if (verbose > 3) perf_session__fprintf(session, stdout); diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index 038483a24a54..e17163fcb702 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -429,6 +429,8 @@ static struct hist_entry *add_hist_entry(struct hists *hists, if (!he) return NULL; + hists->nr_entries++; + rb_link_node(&he->rb_node_in, parent, p); rb_insert_color(&he->rb_node_in, hists->entries_in); out: -- cgit v1.2.3 From c8defe249460b6fa3103797273f590372cc62efc Mon Sep 17 00:00:00 2001 From: Rickard Strandqvist Date: Sat, 20 Dec 2014 13:51:05 +0100 Subject: perf tools: Remove some unused functions from color.c Removes some functions that are not used anywhere: color_parse_mem() color_parse() This was partially found by using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Ramkumar Ramachandra Link: http://lkml.kernel.org/r/1419079865-354-1-git-send-email-rickard_strandqvist@spectrumdigital.se [ Remove now unused parse_{attr,color} routines too ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/color.c | 126 ------------------------------------------------ tools/perf/util/color.h | 2 - 2 files changed, 128 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/color.c b/tools/perf/util/color.c index f4654183d391..55355b3d4f85 100644 --- a/tools/perf/util/color.c +++ b/tools/perf/util/color.c @@ -5,132 +5,6 @@ int perf_use_color_default = -1; -static int parse_color(const char *name, int len) -{ - static const char * const color_names[] = { - "normal", "black", "red", "green", "yellow", - "blue", "magenta", "cyan", "white" - }; - char *end; - int i; - - for (i = 0; i < (int)ARRAY_SIZE(color_names); i++) { - const char *str = color_names[i]; - if (!strncasecmp(name, str, len) && !str[len]) - return i - 1; - } - i = strtol(name, &end, 10); - if (end - name == len && i >= -1 && i <= 255) - return i; - return -2; -} - -static int parse_attr(const char *name, int len) -{ - static const int attr_values[] = { 1, 2, 4, 5, 7 }; - static const char * const attr_names[] = { - "bold", "dim", "ul", "blink", "reverse" - }; - unsigned int i; - - for (i = 0; i < ARRAY_SIZE(attr_names); i++) { - const char *str = attr_names[i]; - if (!strncasecmp(name, str, len) && !str[len]) - return attr_values[i]; - } - return -1; -} - -void color_parse(const char *value, const char *var, char *dst) -{ - color_parse_mem(value, strlen(value), var, dst); -} - -void color_parse_mem(const char *value, int value_len, const char *var, - char *dst) -{ - const char *ptr = value; - int len = value_len; - int attr = -1; - int fg = -2; - int bg = -2; - - if (!strncasecmp(value, "reset", len)) { - strcpy(dst, PERF_COLOR_RESET); - return; - } - - /* [fg [bg]] [attr] */ - while (len > 0) { - const char *word = ptr; - int val, wordlen = 0; - - while (len > 0 && !isspace(word[wordlen])) { - wordlen++; - len--; - } - - ptr = word + wordlen; - while (len > 0 && isspace(*ptr)) { - ptr++; - len--; - } - - val = parse_color(word, wordlen); - if (val >= -1) { - if (fg == -2) { - fg = val; - continue; - } - if (bg == -2) { - bg = val; - continue; - } - goto bad; - } - val = parse_attr(word, wordlen); - if (val < 0 || attr != -1) - goto bad; - attr = val; - } - - if (attr >= 0 || fg >= 0 || bg >= 0) { - int sep = 0; - - *dst++ = '\033'; - *dst++ = '['; - if (attr >= 0) { - *dst++ = '0' + attr; - sep++; - } - if (fg >= 0) { - if (sep++) - *dst++ = ';'; - if (fg < 8) { - *dst++ = '3'; - *dst++ = '0' + fg; - } else { - dst += sprintf(dst, "38;5;%d", fg); - } - } - if (bg >= 0) { - if (sep++) - *dst++ = ';'; - if (bg < 8) { - *dst++ = '4'; - *dst++ = '0' + bg; - } else { - dst += sprintf(dst, "48;5;%d", bg); - } - } - *dst++ = 'm'; - } - *dst = 0; - return; -bad: - die("bad color value '%.*s' for variable '%s'", value_len, value, var); -} - int perf_config_colorbool(const char *var, const char *value, int stdout_is_tty) { if (value) { diff --git a/tools/perf/util/color.h b/tools/perf/util/color.h index 0a594b8a0c26..38146f922c54 100644 --- a/tools/perf/util/color.h +++ b/tools/perf/util/color.h @@ -30,8 +30,6 @@ extern int perf_use_color_default; int perf_color_default_config(const char *var, const char *value, void *cb); int perf_config_colorbool(const char *var, const char *value, int stdout_is_tty); -void color_parse(const char *value, const char *var, char *dst); -void color_parse_mem(const char *value, int len, const char *var, char *dst); int color_vsnprintf(char *bf, size_t size, const char *color, const char *fmt, va_list args); int color_vfprintf(FILE *fp, const char *color, const char *fmt, va_list args); -- cgit v1.2.3 From 688d4dfcdd624192cbf03c08402e444d1d11f294 Mon Sep 17 00:00:00 2001 From: Cody P Schafer Date: Wed, 7 Jan 2015 17:13:50 -0800 Subject: perf tools: Support parsing parameterized events Enable event specification like: pmu/event_name,param1=0x1,param2=0x4/ Assuming that /sys/bus/event_source/devices/pmu/events/event_name Contains something like param2=?,bar=1,param1=? Signed-off-by: Cody P Schafer Signed-off-by: Sukadev Bhattiprolu Acked-by: Jiri Olsa Cc: Cody P Schafer Cc: Haren Myneni Cc: Jiri Olsa Cc: Michael Ellerman Cc: Paul Mackerras Cc: Peter Zijlstra Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1420679633-28856-2-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/parse-events.h | 1 + tools/perf/util/pmu.c | 74 +++++++++++++++++++++++++++++++++++------- 2 files changed, 64 insertions(+), 11 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h index db2cf78ff0f3..ca226cef8460 100644 --- a/tools/perf/util/parse-events.h +++ b/tools/perf/util/parse-events.h @@ -71,6 +71,7 @@ struct parse_events_term { int type_val; int type_term; struct list_head list; + bool used; }; struct parse_events_evlist { diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 5c9c4947cfb4..bfbecf7abd38 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -550,6 +550,35 @@ static void pmu_format_value(unsigned long *format, __u64 value, __u64 *v, } } +/* + * Term is a string term, and might be a param-term. Try to look up it's value + * in the remaining terms. + * - We have a term like "base-or-format-term=param-term", + * - We need to find the value supplied for "param-term" (with param-term named + * in a config string) later on in the term list. + */ +static int pmu_resolve_param_term(struct parse_events_term *term, + struct list_head *head_terms, + __u64 *value) +{ + struct parse_events_term *t; + + list_for_each_entry(t, head_terms, list) { + if (t->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { + if (!strcmp(t->config, term->config)) { + t->used = true; + *value = t->val.num; + return 0; + } + } + } + + if (verbose) + printf("Required parameter '%s' not specified\n", term->config); + + return -1; +} + /* * Setup one of config[12] attr members based on the * user input data - term parameter. @@ -557,25 +586,33 @@ static void pmu_format_value(unsigned long *format, __u64 value, __u64 *v, static int pmu_config_term(struct list_head *formats, struct perf_event_attr *attr, struct parse_events_term *term, + struct list_head *head_terms, bool zero) { struct perf_pmu_format *format; __u64 *vp; + __u64 val; + + /* + * If this is a parameter we've already used for parameterized-eval, + * skip it in normal eval. + */ + if (term->used) + return 0; /* - * Support only for hardcoded and numnerial terms. * Hardcoded terms should be already in, so nothing * to be done for them. */ if (parse_events__is_hardcoded_term(term)) return 0; - if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM) - return -EINVAL; - format = pmu_find_format(formats, term->config); - if (!format) + if (!format) { + if (verbose) + printf("Invalid event/parameter '%s'\n", term->config); return -EINVAL; + } switch (format->value) { case PERF_PMU_FORMAT_VALUE_CONFIG: @@ -592,11 +629,25 @@ static int pmu_config_term(struct list_head *formats, } /* - * XXX If we ever decide to go with string values for - * non-hardcoded terms, here's the place to translate - * them into value. + * Either directly use a numeric term, or try to translate string terms + * using event parameters. */ - pmu_format_value(format->bits, term->val.num, vp, zero); + if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) + val = term->val.num; + else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { + if (strcmp(term->val.str, "?")) { + if (verbose) + pr_info("Invalid sysfs entry %s=%s\n", + term->config, term->val.str); + return -EINVAL; + } + + if (pmu_resolve_param_term(term, head_terms, &val)) + return -EINVAL; + } else + return -EINVAL; + + pmu_format_value(format->bits, val, vp, zero); return 0; } @@ -607,9 +658,10 @@ int perf_pmu__config_terms(struct list_head *formats, { struct parse_events_term *term; - list_for_each_entry(term, head_terms, list) - if (pmu_config_term(formats, attr, term, zero)) + list_for_each_entry(term, head_terms, list) { + if (pmu_config_term(formats, attr, term, head_terms, zero)) return -EINVAL; + } return 0; } -- cgit v1.2.3 From aaea36174991ff39c7a18044660db86527100c55 Mon Sep 17 00:00:00 2001 From: Cody P Schafer Date: Wed, 7 Jan 2015 17:13:51 -0800 Subject: perf tools: Extend format_alias() to include event parameters This causes `perf list pmu` to show parameters for parameterized events like: pmu/event_name,param1=?,param2=?/ [Kernel PMU event] An example: hv_24x7/HPM_TLBIE__PHYS_CORE,core=?/ [Kernel PMU event] Signed-off-by: Cody P Schafer Signed-off-by: Sukadev Bhattiprolu Acked-by: Jiri Olsa Cc: Cody P Schafer Cc: Haren Myneni Cc: Jiri Olsa Cc: Michael Ellerman Cc: Paul Mackerras Cc: Peter Zijlstra Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1420679633-28856-3-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/pmu.c | 28 +++++++++++++++++++++++++++- 1 file changed, 27 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index bfbecf7abd38..48411674da0f 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -819,10 +819,36 @@ void perf_pmu__set_format(unsigned long *bits, long from, long to) set_bit(b, bits); } +static int sub_non_neg(int a, int b) +{ + if (b > a) + return 0; + return a - b; +} + static char *format_alias(char *buf, int len, struct perf_pmu *pmu, struct perf_pmu_alias *alias) { - snprintf(buf, len, "%s/%s/", pmu->name, alias->name); + struct parse_events_term *term; + int used = snprintf(buf, len, "%s/%s", pmu->name, alias->name); + + list_for_each_entry(term, &alias->terms, list) { + if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) + used += snprintf(buf + used, sub_non_neg(len, used), + ",%s=%s", term->config, + term->val.str); + } + + if (sub_non_neg(len, used) > 0) { + buf[used] = '/'; + used++; + } + if (sub_non_neg(len, used) > 0) { + buf[used] = '\0'; + used++; + } else + buf[len - 1] = '\0'; + return buf; } -- cgit v1.2.3 From f9ab9c196d015f3bd8f6bd1c30785c5a49542323 Mon Sep 17 00:00:00 2001 From: Cody P Schafer Date: Wed, 7 Jan 2015 17:13:53 -0800 Subject: perf tools: Document parameterized and symbolic events Signed-off-by: Cody P Schafer Signed-off-by: Sukadev Bhattiprolu Acked-by: Jiri Olsa Cc: Cody P Schafer Cc: Haren Myneni Cc: Jiri Olsa Cc: Michael Ellerman Cc: Paul Mackerras Cc: Peter Zijlstra Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1420679633-28856-5-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-list.txt | 13 +++++++++++++ tools/perf/Documentation/perf-record.txt | 12 ++++++++++++ tools/perf/Documentation/perf-stat.txt | 20 ++++++++++++++++---- 3 files changed, 41 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-list.txt b/tools/perf/Documentation/perf-list.txt index cbb4f743d921..3e2aec94f806 100644 --- a/tools/perf/Documentation/perf-list.txt +++ b/tools/perf/Documentation/perf-list.txt @@ -89,6 +89,19 @@ raw encoding of 0x1A8 can be used: You should refer to the processor specific documentation for getting these details. Some of them are referenced in the SEE ALSO section below. +PARAMETERIZED EVENTS +-------------------- + +Some pmu events listed by 'perf-list' will be displayed with '?' in them. For +example: + + hv_gpci/dtbp_ptitc,phys_processor_idx=?/ + +This means that when provided as an event, a value for '?' must +also be supplied. For example: + + perf stat -C 0 -e 'hv_gpci/dtbp_ptitc,phys_processor_idx=0x2/' ... + OPTIONS ------- diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index af9a54ece024..7d8df2e5edd8 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -33,6 +33,18 @@ OPTIONS - a raw PMU event (eventsel+umask) in the form of rNNN where NNN is a hexadecimal event descriptor. + - a symbolically formed PMU event like 'pmu/param1=0x3,param2/' where + 'param1', 'param2', etc are defined as formats for the PMU in + /sys/bus/event_sources/devices//format/*. + + - a symbolically formed event like 'pmu/config=M,config1=N,config3=K/' + + where M, N, K are numbers (in decimal, hex, octal format). Acceptable + values for each of 'config', 'config1' and 'config2' are defined by + corresponding entries in /sys/bus/event_sources/devices//format/* + param1 and param2 are defined as formats for the PMU in: + /sys/bus/event_sources/devices//format/* + - a hardware breakpoint event in the form of '\mem:addr[:access]' where addr is the address in memory you want to break in. Access is the memory access type (read, write, execute) it can diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt index 29ee857c09c6..04e150d83e7d 100644 --- a/tools/perf/Documentation/perf-stat.txt +++ b/tools/perf/Documentation/perf-stat.txt @@ -25,10 +25,22 @@ OPTIONS -e:: --event=:: - Select the PMU event. Selection can be a symbolic event name - (use 'perf list' to list all events) or a raw PMU - event (eventsel+umask) in the form of rNNN where NNN is a - hexadecimal event descriptor. + Select the PMU event. Selection can be: + + - a symbolic event name (use 'perf list' to list all events) + + - a raw PMU event (eventsel+umask) in the form of rNNN where NNN is a + hexadecimal event descriptor. + + - a symbolically formed event like 'pmu/param1=0x3,param2/' where + param1 and param2 are defined as formats for the PMU in + /sys/bus/event_sources/devices//format/* + + - a symbolically formed event like 'pmu/config=M,config1=N,config2=K/' + where M, N, K are numbers (in decimal, hex, octal format). + Acceptable values for each of 'config', 'config1' and 'config2' + parameters are defined by corresponding entries in + /sys/bus/event_sources/devices//format/* -i:: --no-inherit:: -- cgit v1.2.3 From 5594b557aacaafbba7ad8e5ed29005df883bfe3a Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Sat, 10 Jan 2015 19:33:45 +0900 Subject: perf tools: Allow use of an exclusive option more than once The exclusive options are to prohibit use of conflicting options at the same time. But it had a side effect that it also limits a such option can be used at most once. Currently the only user of the flag is perf probe and it allows to use such options more than once, but when one tries to use it, perf will fail like below: $ sudo perf probe -x /lib/libc-2.20.so --add malloc --add free Error: option `add' cannot be used with add ... Signed-off-by: Namhyung Kim Reviewed-by: Masami Hiramatsu Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Masami Hiramatsu Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1420886028-15135-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/parse-options.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/parse-options.c b/tools/perf/util/parse-options.c index f62dee7bd924..4a015f77e2b5 100644 --- a/tools/perf/util/parse-options.c +++ b/tools/perf/util/parse-options.c @@ -46,7 +46,7 @@ static int get_value(struct parse_opt_ctx_t *p, return opterror(opt, "is not usable", flags); if (opt->flags & PARSE_OPT_EXCLUSIVE) { - if (p->excl_opt) { + if (p->excl_opt && p->excl_opt != opt) { char msg[128]; if (((flags & OPT_SHORT) && p->excl_opt->short_name) || -- cgit v1.2.3 From 38259a170dfab4865968b592ae90b373e9f7d5b5 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Sat, 27 Dec 2014 14:06:30 +0900 Subject: perf diff: Get rid of hists__compute_resort() The hists__compute_resort() is to sort output fields based on the given field/criteria. This was done without the sort list but as we added the field to the sort list, we can do it with normal hists__output_resort() using the ->sort callback. Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Ingo Molnar Cc: Jiri Olsa Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1419656793-32756-2-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-diff.c | 59 +++-------------------------------------------- 1 file changed, 3 insertions(+), 56 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index 318ab9c3f0ba..72c718e6549c 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -581,68 +581,15 @@ hist_entry__cmp_wdiff(struct hist_entry *left, struct hist_entry *right) return hist_entry__cmp_compute(right, left, COMPUTE_WEIGHTED_DIFF); } -static void insert_hist_entry_by_compute(struct rb_root *root, - struct hist_entry *he, - int c) -{ - struct rb_node **p = &root->rb_node; - struct rb_node *parent = NULL; - struct hist_entry *iter; - - while (*p != NULL) { - parent = *p; - iter = rb_entry(parent, struct hist_entry, rb_node); - if (hist_entry__cmp_compute(he, iter, c) < 0) - p = &(*p)->rb_left; - else - p = &(*p)->rb_right; - } - - rb_link_node(&he->rb_node, parent, p); - rb_insert_color(&he->rb_node, root); -} - -static void hists__compute_resort(struct hists *hists) -{ - struct rb_root *root; - struct rb_node *next; - - if (sort__need_collapse) - root = &hists->entries_collapsed; - else - root = hists->entries_in; - - hists->entries = RB_ROOT; - next = rb_first(root); - - hists__reset_stats(hists); - hists__reset_col_len(hists); - - while (next != NULL) { - struct hist_entry *he; - - he = rb_entry(next, struct hist_entry, rb_node_in); - next = rb_next(&he->rb_node_in); - - insert_hist_entry_by_compute(&hists->entries, he, compute); - hists__inc_stats(hists, he); - - if (!he->filtered) - hists__calc_col_len(hists, he); - } -} - static void hists__process(struct hists *hists) { if (show_baseline_only) hists__baseline_only(hists); - if (sort_compute) { + if (sort_compute) hists__precompute(hists); - hists__compute_resort(hists); - } else { - hists__output_resort(hists, NULL); - } + + hists__output_resort(hists, NULL); hists__fprintf(hists, true, 0, 0, 0, stdout); } -- cgit v1.2.3 From ec3d07cb630da5da3ccfdf2b2f5472cadedb9470 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Sat, 27 Dec 2014 14:06:31 +0900 Subject: perf diff: Print diff result more precisely Current perf diff result is somewhat confusing since it sometimes hide small result and sometimes there's no result. So do not hide small result (less than 0.01%) and print "N/A" if baseline is not recorded (for ratio and wdiff only). Blank means the baseline is available but its pairs are not. Before: # Baseline Delta Shared Object Symbol # ........ ....... ................. ......................... # ... 0.01% -0.01% [kernel.kallsyms] [k] native_write_msr_safe 0.01% [kernel.kallsyms] [k] scheduler_tick 0.01% [kernel.kallsyms] [k] native_read_msr_safe 0.00% [kernel.kallsyms] [k] __rcu_read_unlock [kernel.kallsyms] [k] _raw_spin_lock +0.01% [kernel.kallsyms] [k] apic_timer_interrupt [kernel.kallsyms] [k] read_tsc After: # Baseline Delta Shared Object Symbol # ........ ....... ................. ......................... # ... 0.01% -0.01% [kernel.kallsyms] [k] native_write_msr_safe 0.01% [kernel.kallsyms] [k] scheduler_tick 0.01% [kernel.kallsyms] [k] native_read_msr_safe 0.00% [kernel.kallsyms] [k] __rcu_read_unlock +0.01% [kernel.kallsyms] [k] _raw_spin_lock +0.01% [kernel.kallsyms] [k] apic_timer_interrupt +0.01% [kernel.kallsyms] [k] read_tsc Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Ingo Molnar Cc: Jiri Olsa Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1419656793-32756-3-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-diff.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index 72c718e6549c..3f86737da2c4 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -788,7 +788,7 @@ static int __hpp__color_compare(struct perf_hpp_fmt *fmt, char pfmt[20] = " "; if (!pair) - goto dummy_print; + goto no_print; switch (comparison_method) { case COMPUTE_DELTA: @@ -797,8 +797,6 @@ static int __hpp__color_compare(struct perf_hpp_fmt *fmt, else diff = compute_delta(he, pair); - if (fabs(diff) < 0.01) - goto dummy_print; scnprintf(pfmt, 20, "%%%+d.2f%%%%", dfmt->header_width - 1); return percent_color_snprintf(hpp->buf, hpp->size, pfmt, diff); @@ -829,6 +827,9 @@ static int __hpp__color_compare(struct perf_hpp_fmt *fmt, BUG_ON(1); } dummy_print: + return scnprintf(hpp->buf, hpp->size, "%*s", + dfmt->header_width, "N/A"); +no_print: return scnprintf(hpp->buf, hpp->size, "%*s", dfmt->header_width, pfmt); } @@ -879,14 +880,15 @@ hpp__entry_pair(struct hist_entry *he, struct hist_entry *pair, else diff = compute_delta(he, pair); - if (fabs(diff) >= 0.01) - scnprintf(buf, size, "%+4.2F%%", diff); + scnprintf(buf, size, "%+4.2F%%", diff); break; case PERF_HPP_DIFF__RATIO: /* No point for ratio number if we are dummy.. */ - if (he->dummy) + if (he->dummy) { + scnprintf(buf, size, "N/A"); break; + } if (pair->diff.computed) ratio = pair->diff.period_ratio; @@ -899,8 +901,10 @@ hpp__entry_pair(struct hist_entry *he, struct hist_entry *pair, case PERF_HPP_DIFF__WEIGHTED_DIFF: /* No point for wdiff number if we are dummy.. */ - if (he->dummy) + if (he->dummy) { + scnprintf(buf, size, "N/A"); break; + } if (pair->diff.computed) wdiff = pair->diff.wdiff; -- cgit v1.2.3 From ff21cef67e85ae77682560973b8c80ef64125221 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 8 Jan 2015 09:45:45 +0900 Subject: perf diff: Introduce fmt_to_data_file() helper The fmt_to_data_file() is to retrieve struct data__file from perf_hpp_fmt which is embedded in diff_hpp_fmt. It'll be used by sort callback functions later. Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Ingo Molnar Cc: Jiri Olsa Cc: Kan Liang Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1420677949-6719-5-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-diff.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index 3f86737da2c4..ae8f62151b34 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -390,6 +390,15 @@ static void perf_evlist__collapse_resort(struct perf_evlist *evlist) } } +static struct data__file *fmt_to_data_file(struct perf_hpp_fmt *fmt) +{ + struct diff_hpp_fmt *dfmt = container_of(fmt, struct diff_hpp_fmt, fmt); + void *ptr = dfmt - dfmt->idx; + struct data__file *d = container_of(ptr, struct data__file, fmt); + + return d; +} + static struct hist_entry* get_pair_data(struct hist_entry *he, struct data__file *d) { @@ -407,8 +416,7 @@ get_pair_data(struct hist_entry *he, struct data__file *d) static struct hist_entry* get_pair_fmt(struct hist_entry *he, struct diff_hpp_fmt *dfmt) { - void *ptr = dfmt - dfmt->idx; - struct data__file *d = container_of(ptr, struct data__file, fmt); + struct data__file *d = fmt_to_data_file(&dfmt->fmt); return get_pair_data(he, d); } -- cgit v1.2.3 From 87bbdf768ff962f1c04d3b8f6db1e179279132d1 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 8 Jan 2015 09:45:46 +0900 Subject: perf tools: Pass struct perf_hpp_fmt to its callbacks Currently ->cmp, ->collapse and ->sort callbacks doesn't pass corresponding fmt. But it'll be needed by upcoming changes in perf diff command. Suggested-by: Jiri Olsa Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Ingo Molnar Cc: Jiri Olsa Cc: Kan Liang Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1420677949-6719-6-git-send-email-namhyung@kernel.org [ fix build by passing perf_hpp_fmt pointer to hist_entry__cmp_ methods ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-diff.c | 15 ++++++++++----- tools/perf/ui/hist.c | 12 ++++++++---- tools/perf/util/hist.c | 6 +++--- tools/perf/util/hist.h | 9 ++++++--- tools/perf/util/sort.c | 37 ++++++++++++++++++++++++++++++++++--- 5 files changed, 61 insertions(+), 18 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index ae8f62151b34..4816989a84b0 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -554,14 +554,16 @@ hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right, } static int64_t -hist_entry__cmp_nop(struct hist_entry *left __maybe_unused, +hist_entry__cmp_nop(struct perf_hpp_fmt *fmt __maybe_unused, + struct hist_entry *left __maybe_unused, struct hist_entry *right __maybe_unused) { return 0; } static int64_t -hist_entry__cmp_baseline(struct hist_entry *left, struct hist_entry *right) +hist_entry__cmp_baseline(struct perf_hpp_fmt *fmt __maybe_unused, + struct hist_entry *left, struct hist_entry *right) { if (sort_compute) return 0; @@ -572,19 +574,22 @@ hist_entry__cmp_baseline(struct hist_entry *left, struct hist_entry *right) } static int64_t -hist_entry__cmp_delta(struct hist_entry *left, struct hist_entry *right) +hist_entry__cmp_delta(struct perf_hpp_fmt *fmt __maybe_unused, + struct hist_entry *left, struct hist_entry *right) { return hist_entry__cmp_compute(right, left, COMPUTE_DELTA); } static int64_t -hist_entry__cmp_ratio(struct hist_entry *left, struct hist_entry *right) +hist_entry__cmp_ratio(struct perf_hpp_fmt *fmt __maybe_unused, + struct hist_entry *left, struct hist_entry *right) { return hist_entry__cmp_compute(right, left, COMPUTE_RATIO); } static int64_t -hist_entry__cmp_wdiff(struct hist_entry *left, struct hist_entry *right) +hist_entry__cmp_wdiff(struct perf_hpp_fmt *fmt __maybe_unused, + struct hist_entry *left, struct hist_entry *right) { return hist_entry__cmp_compute(right, left, COMPUTE_WEIGHTED_DIFF); } diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c index 482adae3cc44..25d608394d74 100644 --- a/tools/perf/ui/hist.c +++ b/tools/perf/ui/hist.c @@ -285,7 +285,8 @@ static int hpp__entry_##_type(struct perf_hpp_fmt *fmt, \ } #define __HPP_SORT_FN(_type, _field) \ -static int64_t hpp__sort_##_type(struct hist_entry *a, struct hist_entry *b) \ +static int64_t hpp__sort_##_type(struct perf_hpp_fmt *fmt __maybe_unused, \ + struct hist_entry *a, struct hist_entry *b) \ { \ return __hpp__sort(a, b, he_get_##_field); \ } @@ -312,7 +313,8 @@ static int hpp__entry_##_type(struct perf_hpp_fmt *fmt, \ } #define __HPP_SORT_ACC_FN(_type, _field) \ -static int64_t hpp__sort_##_type(struct hist_entry *a, struct hist_entry *b) \ +static int64_t hpp__sort_##_type(struct perf_hpp_fmt *fmt __maybe_unused, \ + struct hist_entry *a, struct hist_entry *b) \ { \ return __hpp__sort_acc(a, b, he_get_acc_##_field); \ } @@ -331,7 +333,8 @@ static int hpp__entry_##_type(struct perf_hpp_fmt *fmt, \ } #define __HPP_SORT_RAW_FN(_type, _field) \ -static int64_t hpp__sort_##_type(struct hist_entry *a, struct hist_entry *b) \ +static int64_t hpp__sort_##_type(struct perf_hpp_fmt *fmt __maybe_unused, \ + struct hist_entry *a, struct hist_entry *b) \ { \ return __hpp__sort(a, b, he_get_raw_##_field); \ } @@ -361,7 +364,8 @@ HPP_PERCENT_ACC_FNS(overhead_acc, period) HPP_RAW_FNS(samples, nr_events) HPP_RAW_FNS(period, period) -static int64_t hpp__nop_cmp(struct hist_entry *a __maybe_unused, +static int64_t hpp__nop_cmp(struct perf_hpp_fmt *fmt __maybe_unused, + struct hist_entry *a __maybe_unused, struct hist_entry *b __maybe_unused) { return 0; diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index e17163fcb702..70b48a65064c 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -913,7 +913,7 @@ hist_entry__cmp(struct hist_entry *left, struct hist_entry *right) if (perf_hpp__should_skip(fmt)) continue; - cmp = fmt->cmp(left, right); + cmp = fmt->cmp(fmt, left, right); if (cmp) break; } @@ -931,7 +931,7 @@ hist_entry__collapse(struct hist_entry *left, struct hist_entry *right) if (perf_hpp__should_skip(fmt)) continue; - cmp = fmt->collapse(left, right); + cmp = fmt->collapse(fmt, left, right); if (cmp) break; } @@ -1061,7 +1061,7 @@ static int hist_entry__sort(struct hist_entry *a, struct hist_entry *b) if (perf_hpp__should_skip(fmt)) continue; - cmp = fmt->sort(a, b); + cmp = fmt->sort(fmt, a, b); if (cmp) break; } diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index 9305580cd53e..2b690d028907 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -195,9 +195,12 @@ struct perf_hpp_fmt { struct hist_entry *he); int (*entry)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, struct hist_entry *he); - int64_t (*cmp)(struct hist_entry *a, struct hist_entry *b); - int64_t (*collapse)(struct hist_entry *a, struct hist_entry *b); - int64_t (*sort)(struct hist_entry *a, struct hist_entry *b); + int64_t (*cmp)(struct perf_hpp_fmt *fmt, + struct hist_entry *a, struct hist_entry *b); + int64_t (*collapse)(struct perf_hpp_fmt *fmt, + struct hist_entry *a, struct hist_entry *b); + int64_t (*sort)(struct perf_hpp_fmt *fmt, + struct hist_entry *a, struct hist_entry *b); struct list_head list; struct list_head sort_list; diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index 9139dda9f9a3..7a39c1ed8d37 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -1304,6 +1304,37 @@ static int __sort__hpp_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, return hse->se->se_snprintf(he, hpp->buf, hpp->size, len); } +static int64_t __sort__hpp_cmp(struct perf_hpp_fmt *fmt, + struct hist_entry *a, struct hist_entry *b) +{ + struct hpp_sort_entry *hse; + + hse = container_of(fmt, struct hpp_sort_entry, hpp); + return hse->se->se_cmp(a, b); +} + +static int64_t __sort__hpp_collapse(struct perf_hpp_fmt *fmt, + struct hist_entry *a, struct hist_entry *b) +{ + struct hpp_sort_entry *hse; + int64_t (*collapse_fn)(struct hist_entry *, struct hist_entry *); + + hse = container_of(fmt, struct hpp_sort_entry, hpp); + collapse_fn = hse->se->se_collapse ?: hse->se->se_cmp; + return collapse_fn(a, b); +} + +static int64_t __sort__hpp_sort(struct perf_hpp_fmt *fmt, + struct hist_entry *a, struct hist_entry *b) +{ + struct hpp_sort_entry *hse; + int64_t (*sort_fn)(struct hist_entry *, struct hist_entry *); + + hse = container_of(fmt, struct hpp_sort_entry, hpp); + sort_fn = hse->se->se_sort ?: hse->se->se_cmp; + return sort_fn(a, b); +} + static struct hpp_sort_entry * __sort_dimension__alloc_hpp(struct sort_dimension *sd) { @@ -1322,9 +1353,9 @@ __sort_dimension__alloc_hpp(struct sort_dimension *sd) hse->hpp.entry = __sort__hpp_entry; hse->hpp.color = NULL; - hse->hpp.cmp = sd->entry->se_cmp; - hse->hpp.collapse = sd->entry->se_collapse ? : sd->entry->se_cmp; - hse->hpp.sort = sd->entry->se_sort ? : hse->hpp.collapse; + hse->hpp.cmp = __sort__hpp_cmp; + hse->hpp.collapse = __sort__hpp_collapse; + hse->hpp.sort = __sort__hpp_sort; INIT_LIST_HEAD(&hse->hpp.list); INIT_LIST_HEAD(&hse->hpp.sort_list); -- cgit v1.2.3 From 56495a8affabe35aa0d94aae050d3e0e60d0455f Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 8 Jan 2015 09:45:47 +0900 Subject: perf diff: Fix output ordering to honor next column When perf diff prints output, it sorts the entries using baseline field by default, but entries which don't have baseline are not sorted properly. This patch makes it sorted by values of next column. Before: # Baseline/0 Delta/1 Delta/2 Shared Object Symbol # .......... ....... ....... ................. .......................................... # 32.75% +0.28% -0.83% libc-2.20.so [.] malloc 31.50% -0.74% -0.23% libc-2.20.so [.] _int_free 22.98% +0.51% +0.52% libc-2.20.so [.] _int_malloc 5.70% +0.28% +0.30% libc-2.20.so [.] free 4.38% -0.21% +0.25% a.out [.] main 1.32% -0.15% +0.05% a.out [.] free@plt 1.31% +0.03% -0.06% a.out [.] malloc@plt 0.01% -0.01% -0.01% [kernel.kallsyms] [k] native_write_msr_safe 0.01% [kernel.kallsyms] [k] scheduler_tick 0.01% -0.00% [kernel.kallsyms] [k] native_read_msr_safe +0.01% [kernel.kallsyms] [k] _raw_spin_lock_irqsave +0.01% +0.01% [kernel.kallsyms] [k] apic_timer_interrupt +0.01% [kernel.kallsyms] [k] intel_pstate_timer_func +0.01% [kernel.kallsyms] [k] perf_adjust_freq_unthr_context.part.82 +0.01% [kernel.kallsyms] [k] read_tsc +0.01% [kernel.kallsyms] [k] timekeeping_update.constprop.8 After: # Baseline/0 Delta/1 Delta/2 Shared Object Symbol # .......... ....... ....... ................. .......................................... # 32.75% +0.28% -0.83% libc-2.20.so [.] malloc 31.50% -0.74% -0.23% libc-2.20.so [.] _int_free 22.98% +0.51% +0.52% libc-2.20.so [.] _int_malloc 5.70% +0.28% +0.30% libc-2.20.so [.] free 4.38% -0.21% +0.25% a.out [.] main 1.32% -0.15% +0.05% a.out [.] free@plt 1.31% +0.03% -0.06% a.out [.] malloc@plt 0.01% -0.01% -0.01% [kernel.kallsyms] [k] native_write_msr_safe 0.01% [kernel.kallsyms] [k] scheduler_tick 0.01% -0.00% [kernel.kallsyms] [k] native_read_msr_safe +0.01% +0.01% [kernel.kallsyms] [k] apic_timer_interrupt +0.01% [kernel.kallsyms] [k] read_tsc +0.01% [kernel.kallsyms] [k] perf_adjust_freq_unthr_context.part.82 +0.01% [kernel.kallsyms] [k] intel_pstate_timer_func +0.01% [kernel.kallsyms] [k] _raw_spin_lock_irqsave +0.01% [kernel.kallsyms] [k] timekeeping_update.constprop.8 Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Ingo Molnar Cc: Jiri Olsa Cc: Kan Liang Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1420677949-6719-7-git-send-email-namhyung@kernel.org [ Fixed up hist_entry__cmp_ method signatures, fallout from making previous cset buildable ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-diff.c | 65 +++++++++++++++++++++++++---------------------- 1 file changed, 35 insertions(+), 30 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index 4816989a84b0..98444561d9b4 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -456,26 +456,30 @@ static void hists__precompute(struct hists *hists) next = rb_first(root); while (next != NULL) { struct hist_entry *he, *pair; + struct data__file *d; + int i; he = rb_entry(next, struct hist_entry, rb_node_in); next = rb_next(&he->rb_node_in); - pair = get_pair_data(he, &data__files[sort_compute]); - if (!pair) - continue; + data__for_each_file_new(i, d) { + pair = get_pair_data(he, d); + if (!pair) + continue; - switch (compute) { - case COMPUTE_DELTA: - compute_delta(he, pair); - break; - case COMPUTE_RATIO: - compute_ratio(he, pair); - break; - case COMPUTE_WEIGHTED_DIFF: - compute_wdiff(he, pair); - break; - default: - BUG_ON(1); + switch (compute) { + case COMPUTE_DELTA: + compute_delta(he, pair); + break; + case COMPUTE_RATIO: + compute_ratio(he, pair); + break; + case COMPUTE_WEIGHTED_DIFF: + compute_wdiff(he, pair); + break; + default: + BUG_ON(1); + } } } } @@ -525,7 +529,7 @@ __hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right, static int64_t hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right, - int c) + int c, int sort_idx) { bool pairs_left = hist_entry__has_pairs(left); bool pairs_right = hist_entry__has_pairs(right); @@ -537,8 +541,8 @@ hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right, if (!pairs_left || !pairs_right) return pairs_left ? -1 : 1; - p_left = get_pair_data(left, &data__files[sort_compute]); - p_right = get_pair_data(right, &data__files[sort_compute]); + p_left = get_pair_data(left, &data__files[sort_idx]); + p_right = get_pair_data(right, &data__files[sort_idx]); if (!p_left && !p_right) return 0; @@ -565,33 +569,36 @@ static int64_t hist_entry__cmp_baseline(struct perf_hpp_fmt *fmt __maybe_unused, struct hist_entry *left, struct hist_entry *right) { - if (sort_compute) - return 0; - if (left->stat.period == right->stat.period) return 0; return left->stat.period > right->stat.period ? 1 : -1; } static int64_t -hist_entry__cmp_delta(struct perf_hpp_fmt *fmt __maybe_unused, +hist_entry__cmp_delta(struct perf_hpp_fmt *fmt, struct hist_entry *left, struct hist_entry *right) { - return hist_entry__cmp_compute(right, left, COMPUTE_DELTA); + struct data__file *d = fmt_to_data_file(fmt); + + return hist_entry__cmp_compute(right, left, COMPUTE_DELTA, d->idx); } static int64_t -hist_entry__cmp_ratio(struct perf_hpp_fmt *fmt __maybe_unused, +hist_entry__cmp_ratio(struct perf_hpp_fmt *fmt, struct hist_entry *left, struct hist_entry *right) { - return hist_entry__cmp_compute(right, left, COMPUTE_RATIO); + struct data__file *d = fmt_to_data_file(fmt); + + return hist_entry__cmp_compute(right, left, COMPUTE_RATIO, d->idx); } static int64_t -hist_entry__cmp_wdiff(struct perf_hpp_fmt *fmt __maybe_unused, +hist_entry__cmp_wdiff(struct perf_hpp_fmt *fmt, struct hist_entry *left, struct hist_entry *right) { - return hist_entry__cmp_compute(right, left, COMPUTE_WEIGHTED_DIFF); + struct data__file *d = fmt_to_data_file(fmt); + + return hist_entry__cmp_compute(right, left, COMPUTE_WEIGHTED_DIFF, d->idx); } static void hists__process(struct hists *hists) @@ -599,9 +606,7 @@ static void hists__process(struct hists *hists) if (show_baseline_only) hists__baseline_only(hists); - if (sort_compute) - hists__precompute(hists); - + hists__precompute(hists); hists__output_resort(hists, NULL); hists__fprintf(hists, true, 0, 0, 0, stdout); -- cgit v1.2.3 From 566b5cfb035fb496280be61f976b5281563bfa27 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 8 Jan 2015 09:45:48 +0900 Subject: perf diff: Fix -o/--order option behavior The prior change fixes default output ordering with each column but it breaks -o/--order option. This patch prepends a new hpp fmt struct to sort list but not to output field list so that it can affect ordering without adding a new output column. The new hpp fmt uses its own compare functions which treats dummy entries (which have no baseline) little differently - the delta field can be computed without baseline but others (ratio and wdiff) are not. The new output will look like below: $ perf diff -o 2 perf.data.{old,cur,new} ... # Baseline/0 Delta/1 Delta/2 Shared Object Symbol # .......... ....... ....... ................. .......................................... 22.98% +0.51% +0.52% libc-2.20.so [.] _int_malloc 5.70% +0.28% +0.30% libc-2.20.so [.] free 4.38% -0.21% +0.25% a.out [.] main 1.32% -0.15% +0.05% a.out [.] free@plt +0.01% [kernel.kallsyms] [k] intel_pstate_timer_func +0.01% [kernel.kallsyms] [k] _raw_spin_lock_irqsave +0.01% [kernel.kallsyms] [k] timekeeping_update.constprop.8 +0.01% +0.01% [kernel.kallsyms] [k] apic_timer_interrupt 0.01% -0.00% [kernel.kallsyms] [k] native_read_msr_safe 0.01% -0.01% -0.01% [kernel.kallsyms] [k] native_write_msr_safe 1.31% +0.03% -0.06% a.out [.] malloc@plt 31.50% -0.74% -0.23% libc-2.20.so [.] _int_free 32.75% +0.28% -0.83% libc-2.20.so [.] malloc 0.01% [kernel.kallsyms] [k] scheduler_tick +0.01% [kernel.kallsyms] [k] read_tsc +0.01% [kernel.kallsyms] [k] perf_adjust_freq_unthr_context.part.82 In above example, the output was sorted by 'Delta/2' column first, and then 'Baseline/0' and finally 'Delta/1'. Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Ingo Molnar Cc: Jiri Olsa Cc: Kan Liang Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1420677949-6719-8-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-diff.c | 101 +++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 99 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index 98444561d9b4..74aada554b12 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -557,6 +557,37 @@ hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right, return __hist_entry__cmp_compute(p_left, p_right, c); } +static int64_t +hist_entry__cmp_compute_idx(struct hist_entry *left, struct hist_entry *right, + int c, int sort_idx) +{ + struct hist_entry *p_right, *p_left; + + p_left = get_pair_data(left, &data__files[sort_idx]); + p_right = get_pair_data(right, &data__files[sort_idx]); + + if (!p_left && !p_right) + return 0; + + if (!p_left || !p_right) + return p_left ? -1 : 1; + + if (c != COMPUTE_DELTA) { + /* + * The delta can be computed without the baseline, but + * others are not. Put those entries which have no + * values below. + */ + if (left->dummy && right->dummy) + return 0; + + if (left->dummy || right->dummy) + return left->dummy ? 1 : -1; + } + + return __hist_entry__cmp_compute(p_left, p_right, c); +} + static int64_t hist_entry__cmp_nop(struct perf_hpp_fmt *fmt __maybe_unused, struct hist_entry *left __maybe_unused, @@ -601,6 +632,30 @@ hist_entry__cmp_wdiff(struct perf_hpp_fmt *fmt, return hist_entry__cmp_compute(right, left, COMPUTE_WEIGHTED_DIFF, d->idx); } +static int64_t +hist_entry__cmp_delta_idx(struct perf_hpp_fmt *fmt __maybe_unused, + struct hist_entry *left, struct hist_entry *right) +{ + return hist_entry__cmp_compute_idx(right, left, COMPUTE_DELTA, + sort_compute); +} + +static int64_t +hist_entry__cmp_ratio_idx(struct perf_hpp_fmt *fmt __maybe_unused, + struct hist_entry *left, struct hist_entry *right) +{ + return hist_entry__cmp_compute_idx(right, left, COMPUTE_RATIO, + sort_compute); +} + +static int64_t +hist_entry__cmp_wdiff_idx(struct perf_hpp_fmt *fmt __maybe_unused, + struct hist_entry *left, struct hist_entry *right) +{ + return hist_entry__cmp_compute_idx(right, left, COMPUTE_WEIGHTED_DIFF, + sort_compute); +} + static void hists__process(struct hists *hists) { if (show_baseline_only) @@ -1074,9 +1129,10 @@ static void data__hpp_register(struct data__file *d, int idx) perf_hpp__register_sort_field(fmt); } -static void ui_init(void) +static int ui_init(void) { struct data__file *d; + struct perf_hpp_fmt *fmt; int i; data__for_each_file(i, d) { @@ -1106,6 +1162,46 @@ static void ui_init(void) data__hpp_register(d, i ? PERF_HPP_DIFF__PERIOD : PERF_HPP_DIFF__PERIOD_BASELINE); } + + if (!sort_compute) + return 0; + + /* + * Prepend an fmt to sort on columns at 'sort_compute' first. + * This fmt is added only to the sort list but not to the + * output fields list. + * + * Note that this column (data) can be compared twice - one + * for this 'sort_compute' fmt and another for the normal + * diff_hpp_fmt. But it shouldn't a problem as most entries + * will be sorted out by first try or baseline and comparing + * is not a costly operation. + */ + fmt = zalloc(sizeof(*fmt)); + if (fmt == NULL) { + pr_err("Memory allocation failed\n"); + return -1; + } + + fmt->cmp = hist_entry__cmp_nop; + fmt->collapse = hist_entry__cmp_nop; + + switch (compute) { + case COMPUTE_DELTA: + fmt->sort = hist_entry__cmp_delta_idx; + break; + case COMPUTE_RATIO: + fmt->sort = hist_entry__cmp_ratio_idx; + break; + case COMPUTE_WEIGHTED_DIFF: + fmt->sort = hist_entry__cmp_wdiff_idx; + break; + default: + BUG_ON(1); + } + + list_add(&fmt->sort_list, &perf_hpp__sort_list); + return 0; } static int data_init(int argc, const char **argv) @@ -1171,7 +1267,8 @@ int cmd_diff(int argc, const char **argv, const char *prefix __maybe_unused) if (data_init(argc, argv) < 0) return -1; - ui_init(); + if (ui_init() < 0) + return -1; sort__mode = SORT_MODE__DIFF; -- cgit v1.2.3 From e2726d99645c5fa1fd9abd6353270fde624696f8 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Thu, 22 Jan 2015 10:34:22 -0300 Subject: tools lib fs: Adopt debugfs open strerrno method As this is not specific to an evlist and may be used with other tools. Cc: Adrian Hunter Cc: Borislav Petkov Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-a9up9mivx1pzdf5tqrqsx62d@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo tools/perf/util/include/asm/hash.h --- tools/lib/api/fs/debugfs.c | 27 +++++++++++++++++++++++++++ tools/lib/api/fs/debugfs.h | 2 ++ tools/perf/builtin-trace.c | 11 +++++++++-- tools/perf/util/evlist.c | 27 --------------------------- tools/perf/util/evlist.h | 1 - 5 files changed, 38 insertions(+), 30 deletions(-) (limited to 'tools') diff --git a/tools/lib/api/fs/debugfs.c b/tools/lib/api/fs/debugfs.c index 86ea2d7b8845..fb700eed61c2 100644 --- a/tools/lib/api/fs/debugfs.c +++ b/tools/lib/api/fs/debugfs.c @@ -1,3 +1,4 @@ +#define _GNU_SOURCE #include #include #include @@ -98,3 +99,29 @@ char *debugfs_mount(const char *mountpoint) out: return debugfs_mountpoint; } + +int debugfs__strerror_open(int err, char *buf, size_t size) +{ + char sbuf[128]; + + switch (err) { + case ENOENT: + snprintf(buf, size, "%s", + "Error:\tUnable to find debugfs\n" + "Hint:\tWas your kernel compiled with debugfs support?\n" + "Hint:\tIs the debugfs filesystem mounted?\n" + "Hint:\tTry 'sudo mount -t debugfs nodev /sys/kernel/debug'"); + break; + case EACCES: + snprintf(buf, size, + "Error:\tNo permissions to read %s/tracing/events/raw_syscalls\n" + "Hint:\tTry 'sudo mount -o remount,mode=755 %s'\n", + debugfs_mountpoint, debugfs_mountpoint); + break; + default: + snprintf(buf, size, "%s", strerror_r(err, sbuf, sizeof(sbuf))); + break; + } + + return 0; +} diff --git a/tools/lib/api/fs/debugfs.h b/tools/lib/api/fs/debugfs.h index f19d3df9609d..afa5043fec61 100644 --- a/tools/lib/api/fs/debugfs.h +++ b/tools/lib/api/fs/debugfs.h @@ -26,4 +26,6 @@ char *debugfs_mount(const char *mountpoint); extern char debugfs_mountpoint[]; +int debugfs__strerror_open(int err, char *buf, size_t size); + #endif /* __API_DEBUGFS_H__ */ diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 258f6550c736..2f82dd78b086 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -2062,8 +2062,15 @@ static int trace__run(struct trace *trace, int argc, const char **argv) perf_evlist__add_vfs_getname(evlist); if ((trace->trace_pgfaults & TRACE_PFMAJ) && - perf_evlist__add_pgfault(evlist, PERF_COUNT_SW_PAGE_FAULTS_MAJ)) + perf_evlist__add_pgfault(evlist, PERF_COUNT_SW_PAGE_FAULTS_MAJ)) { + /* + * FIXME: This one needs better error handling, as by now we + * already checked that debugfs is mounted and that we have access to it, + * so probably the case is that something is busted wrt this specific + * software event, ditto for the next gotos to out_error_tp... + */ goto out_error_tp; + } if ((trace->trace_pgfaults & TRACE_PFMIN) && perf_evlist__add_pgfault(evlist, PERF_COUNT_SW_PAGE_FAULTS_MIN)) @@ -2203,7 +2210,7 @@ out: char errbuf[BUFSIZ]; out_error_tp: - perf_evlist__strerror_tp(evlist, errno, errbuf, sizeof(errbuf)); + debugfs__strerror_open(errno, errbuf, sizeof(errbuf)); goto out_error; out_error_mmap: diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 2e507b5025a3..28b8ce86bf12 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -1436,33 +1436,6 @@ size_t perf_evlist__fprintf(struct perf_evlist *evlist, FILE *fp) return printed + fprintf(fp, "\n"); } -int perf_evlist__strerror_tp(struct perf_evlist *evlist __maybe_unused, - int err, char *buf, size_t size) -{ - char sbuf[128]; - - switch (err) { - case ENOENT: - scnprintf(buf, size, "%s", - "Error:\tUnable to find debugfs\n" - "Hint:\tWas your kernel compiled with debugfs support?\n" - "Hint:\tIs the debugfs filesystem mounted?\n" - "Hint:\tTry 'sudo mount -t debugfs nodev /sys/kernel/debug'"); - break; - case EACCES: - scnprintf(buf, size, - "Error:\tNo permissions to read %s/tracing/events/raw_syscalls\n" - "Hint:\tTry 'sudo mount -o remount,mode=755 %s'\n", - debugfs_mountpoint, debugfs_mountpoint); - break; - default: - scnprintf(buf, size, "%s", strerror_r(err, sbuf, sizeof(sbuf))); - break; - } - - return 0; -} - int perf_evlist__strerror_open(struct perf_evlist *evlist __maybe_unused, int err, char *buf, size_t size) { diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index 0ba93f67ab94..c94a9e03ecf1 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -183,7 +183,6 @@ static inline struct perf_evsel *perf_evlist__last(struct perf_evlist *evlist) size_t perf_evlist__fprintf(struct perf_evlist *evlist, FILE *fp); -int perf_evlist__strerror_tp(struct perf_evlist *evlist, int err, char *buf, size_t size); int perf_evlist__strerror_open(struct perf_evlist *evlist, int err, char *buf, size_t size); int perf_evlist__strerror_mmap(struct perf_evlist *evlist, int err, char *buf, size_t size); -- cgit v1.2.3 From 801c67b05f55d0cdafcda9fdcbb3da375b03c192 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Thu, 22 Jan 2015 10:52:55 -0300 Subject: tools lib fs: Pass filename to debugfs__strerror_open It was hardcoded for one specific tracepoint, leftover from its initial user: 'perf trace'. Cc: Adrian Hunter Cc: Borislav Petkov Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-j1jicvwljy5qx1nah4mkmyke@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/lib/api/fs/debugfs.c | 6 +++--- tools/lib/api/fs/debugfs.h | 2 +- tools/perf/builtin-trace.c | 5 +++-- 3 files changed, 7 insertions(+), 6 deletions(-) (limited to 'tools') diff --git a/tools/lib/api/fs/debugfs.c b/tools/lib/api/fs/debugfs.c index fb700eed61c2..5e8f3913de43 100644 --- a/tools/lib/api/fs/debugfs.c +++ b/tools/lib/api/fs/debugfs.c @@ -100,7 +100,7 @@ out: return debugfs_mountpoint; } -int debugfs__strerror_open(int err, char *buf, size_t size) +int debugfs__strerror_open(int err, char *buf, size_t size, const char *filename) { char sbuf[128]; @@ -114,9 +114,9 @@ int debugfs__strerror_open(int err, char *buf, size_t size) break; case EACCES: snprintf(buf, size, - "Error:\tNo permissions to read %s/tracing/events/raw_syscalls\n" + "Error:\tNo permissions to read %s/%s\n" "Hint:\tTry 'sudo mount -o remount,mode=755 %s'\n", - debugfs_mountpoint, debugfs_mountpoint); + debugfs_mountpoint, filename, debugfs_mountpoint); break; default: snprintf(buf, size, "%s", strerror_r(err, sbuf, sizeof(sbuf))); diff --git a/tools/lib/api/fs/debugfs.h b/tools/lib/api/fs/debugfs.h index afa5043fec61..a1799aecd4d5 100644 --- a/tools/lib/api/fs/debugfs.h +++ b/tools/lib/api/fs/debugfs.h @@ -26,6 +26,6 @@ char *debugfs_mount(const char *mountpoint); extern char debugfs_mountpoint[]; -int debugfs__strerror_open(int err, char *buf, size_t size); +int debugfs__strerror_open(int err, char *buf, size_t size, const char *filename); #endif /* __API_DEBUGFS_H__ */ diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 2f82dd78b086..684609d7a83d 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -2056,7 +2056,7 @@ static int trace__run(struct trace *trace, int argc, const char **argv) if (trace->trace_syscalls && perf_evlist__add_syscall_newtp(evlist, trace__sys_enter, trace__sys_exit)) - goto out_error_tp; + goto out_error_raw_syscalls; if (trace->trace_syscalls) perf_evlist__add_vfs_getname(evlist); @@ -2210,7 +2210,8 @@ out: char errbuf[BUFSIZ]; out_error_tp: - debugfs__strerror_open(errno, errbuf, sizeof(errbuf)); +out_error_raw_syscalls: + debugfs__strerror_open(errno, errbuf, sizeof(errbuf), "tracing/events/raw_syscalls"); goto out_error; out_error_mmap: -- cgit v1.2.3 From 5ed08dae9d2f2307c103e2dce94d801e74aefae4 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Thu, 22 Jan 2015 11:08:04 -0300 Subject: perf trace: Fix error reporting for evsel pgfault constructor In that case the only failure possible is not to have enough memory, as we are just creating the evsels, not trying to access any system facility such as debugfs files or syscalls. Cc: Adrian Hunter Cc: Borislav Petkov Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-7k6asvfhiwiu2zs6o2oknchk@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-trace.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 684609d7a83d..eaaa540bf1f3 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -2063,18 +2063,12 @@ static int trace__run(struct trace *trace, int argc, const char **argv) if ((trace->trace_pgfaults & TRACE_PFMAJ) && perf_evlist__add_pgfault(evlist, PERF_COUNT_SW_PAGE_FAULTS_MAJ)) { - /* - * FIXME: This one needs better error handling, as by now we - * already checked that debugfs is mounted and that we have access to it, - * so probably the case is that something is busted wrt this specific - * software event, ditto for the next gotos to out_error_tp... - */ - goto out_error_tp; + goto out_error_mem; } if ((trace->trace_pgfaults & TRACE_PFMIN) && perf_evlist__add_pgfault(evlist, PERF_COUNT_SW_PAGE_FAULTS_MIN)) - goto out_error_tp; + goto out_error_mem; if (trace->sched && perf_evlist__add_newtp(evlist, "sched", "sched_stat_runtime", @@ -2225,6 +2219,9 @@ out_error: fprintf(trace->output, "%s\n", errbuf); goto out_delete_evlist; } +out_error_mem: + fprintf(trace->output, "Not enough memory to run!\n"); + goto out_delete_evlist; } static int trace__replay(struct trace *trace) -- cgit v1.2.3 From 2cc990ba3af4f9511f0d016c73b8163591f890e7 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Thu, 22 Jan 2015 11:13:43 -0300 Subject: tools lib fs debugfs: Introduce debugfs__strerror_open_tp There will be other cases where not just a tracepoint event is being opened below the debugfs mountpoint, but it is rather common, so provide one helper for that. Cc: Adrian Hunter Cc: Borislav Petkov Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-q6e6zct49ql6nbcw8kkg0lbj@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/lib/api/fs/debugfs.c | 9 +++++++++ tools/lib/api/fs/debugfs.h | 1 + tools/perf/builtin-trace.c | 13 ++++++++----- 3 files changed, 18 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/lib/api/fs/debugfs.c b/tools/lib/api/fs/debugfs.c index 5e8f3913de43..bf9e21648894 100644 --- a/tools/lib/api/fs/debugfs.c +++ b/tools/lib/api/fs/debugfs.c @@ -125,3 +125,12 @@ int debugfs__strerror_open(int err, char *buf, size_t size, const char *filename return 0; } + +int debugfs__strerror_open_tp(int err, char *buf, size_t size, const char *sys, const char *name) +{ + char path[PATH_MAX]; + + snprintf(path, PATH_MAX, "tracing/events/%s/%s", sys, name ?: "*"); + + return debugfs__strerror_open(err, buf, size, path); +} diff --git a/tools/lib/api/fs/debugfs.h b/tools/lib/api/fs/debugfs.h index a1799aecd4d5..0739881a9897 100644 --- a/tools/lib/api/fs/debugfs.h +++ b/tools/lib/api/fs/debugfs.h @@ -27,5 +27,6 @@ char *debugfs_mount(const char *mountpoint); extern char debugfs_mountpoint[]; int debugfs__strerror_open(int err, char *buf, size_t size, const char *filename); +int debugfs__strerror_open_tp(int err, char *buf, size_t size, const char *sys, const char *name); #endif /* __API_DEBUGFS_H__ */ diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index eaaa540bf1f3..7e935f1083ec 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -2071,9 +2071,9 @@ static int trace__run(struct trace *trace, int argc, const char **argv) goto out_error_mem; if (trace->sched && - perf_evlist__add_newtp(evlist, "sched", "sched_stat_runtime", - trace__sched_stat_runtime)) - goto out_error_tp; + perf_evlist__add_newtp(evlist, "sched", "sched_stat_runtime", + trace__sched_stat_runtime)) + goto out_error_sched_stat_runtime; err = perf_evlist__create_maps(evlist, &trace->opts.target); if (err < 0) { @@ -2203,9 +2203,12 @@ out: { char errbuf[BUFSIZ]; -out_error_tp: +out_error_sched_stat_runtime: + debugfs__strerror_open_tp(errno, errbuf, sizeof(errbuf), "sched", "sched_stat_runtime"); + goto out_error; + out_error_raw_syscalls: - debugfs__strerror_open(errno, errbuf, sizeof(errbuf), "tracing/events/raw_syscalls"); + debugfs__strerror_open_tp(errno, errbuf, sizeof(errbuf), "raw_syscalls", "sys_(enter|exit)"); goto out_error; out_error_mmap: -- cgit v1.2.3 From f816b3cc99804a9f771315331deb36abec47f5b4 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Thu, 22 Jan 2015 16:35:42 -0300 Subject: tools lib fs debugfs: Check if debugfs is mounted when handling ENOENT If debugfs was already mounted, then its a matter of not finding the tracepoint, tell the user that perhaps a CONFIG_ setting is not enabled. Cc: Adrian Hunter Cc: Borislav Petkov Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-6chfytoflyx3jwfqm7ebltu0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/lib/api/fs/debugfs.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'tools') diff --git a/tools/lib/api/fs/debugfs.c b/tools/lib/api/fs/debugfs.c index bf9e21648894..d2b18e887071 100644 --- a/tools/lib/api/fs/debugfs.c +++ b/tools/lib/api/fs/debugfs.c @@ -106,6 +106,13 @@ int debugfs__strerror_open(int err, char *buf, size_t size, const char *filename switch (err) { case ENOENT: + if (debugfs_found) { + snprintf(buf, size, + "Error:\tFile %s/%s not found.\n" + "Hint:\tPerhaps this kernel misses some CONFIG_ setting to enable this feature?.\n", + debugfs_mountpoint, filename); + break; + } snprintf(buf, size, "%s", "Error:\tUnable to find debugfs\n" "Hint:\tWas your kernel compiled with debugfs support?\n" -- cgit v1.2.3 From 605a3069161dd966d6cea795133c673fb6706e52 Mon Sep 17 00:00:00 2001 From: Rasmus Villemoes Date: Thu, 22 Jan 2015 18:01:23 +0100 Subject: perf tests: Fix typo in sample-parsing.c It was testing the same buffer for differences: memcmp(s1->user_stack.data, s1->user_stack.data, s1->user_stack.size) I'm pretty sure this wasn't supposed to be dead code. Signed-off-by: Rasmus Villemoes Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1421946083-29863-1-git-send-email-linux@rasmusvillemoes.dk Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/tests/sample-parsing.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/tests/sample-parsing.c b/tools/perf/tests/sample-parsing.c index 4908c648a597..30c02181e78b 100644 --- a/tools/perf/tests/sample-parsing.c +++ b/tools/perf/tests/sample-parsing.c @@ -110,7 +110,7 @@ static bool samples_same(const struct perf_sample *s1, if (type & PERF_SAMPLE_STACK_USER) { COMP(user_stack.size); - if (memcmp(s1->user_stack.data, s1->user_stack.data, + if (memcmp(s1->user_stack.data, s2->user_stack.data, s1->user_stack.size)) { pr_debug("Samples differ at 'user_stack'\n"); return false; -- cgit v1.2.3 From 4397bd2f90459d550deca7f6ba32c12e382d8b57 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 20 Jan 2015 15:40:50 +0900 Subject: perf ui/tui: Show fatal error message only if exists When perf exits with some error it shows the error message with ui__error() or ui__warning() and then calls ui__exit() during exit_browser(). On TUI, it then shows a window titled "Fatal Error" to inform user a last message which might be related with this condition. However it sometimes contains no message and just annoyes users. The usual case for this is running perf top as normal user. (And /proc/sys/kernel/perf_event_paranoid being 1). Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1421736050-5283-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/ui/tui/helpline.c | 3 +++ tools/perf/ui/tui/setup.c | 3 ++- 2 files changed, 5 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/ui/tui/helpline.c b/tools/perf/ui/tui/helpline.c index 1c8b9afd5d6e..88f5143a5981 100644 --- a/tools/perf/ui/tui/helpline.c +++ b/tools/perf/ui/tui/helpline.c @@ -9,6 +9,7 @@ #include "../libslang.h" char ui_helpline__last_msg[1024]; +bool tui_helpline__set; static void tui_helpline__pop(void) { @@ -35,6 +36,8 @@ static int tui_helpline__show(const char *format, va_list ap) sizeof(ui_helpline__last_msg) - backlog, format, ap); backlog += ret; + tui_helpline__set = true; + if (ui_helpline__last_msg[backlog - 1] == '\n') { ui_helpline__puts(ui_helpline__last_msg); SLsmg_refresh(); diff --git a/tools/perf/ui/tui/setup.c b/tools/perf/ui/tui/setup.c index 3c38f25b1695..b77e1d771363 100644 --- a/tools/perf/ui/tui/setup.c +++ b/tools/perf/ui/tui/setup.c @@ -17,6 +17,7 @@ static volatile int ui__need_resize; extern struct perf_error_ops perf_tui_eops; +extern bool tui_helpline__set; extern void hist_browser__init_hpp(void); @@ -159,7 +160,7 @@ out: void ui__exit(bool wait_for_ok) { - if (wait_for_ok) + if (wait_for_ok && tui_helpline__set) ui__question_window("Fatal Error", ui_helpline__last_msg, "Press any key...", 0); -- cgit v1.2.3 From b64eedb88b43da9e1ecfe4c197892e6562f4e1df Mon Sep 17 00:00:00 2001 From: Anshuman Khandual Date: Wed, 14 Jan 2015 12:38:50 +0530 Subject: selftests/powerpc: Make git ignore all binaries in powerpc test suite This patch includes all of the powerpc test binaries into the .gitignore file listing in their respective directories. This will make sure that git ignores all of these test binaries when displaying status. Signed-off-by: Anshuman Khandual Signed-off-by: Michael Ellerman --- .../testing/selftests/powerpc/copyloops/.gitignore | 4 ++++ tools/testing/selftests/powerpc/mm/.gitignore | 1 + tools/testing/selftests/powerpc/pmu/.gitignore | 3 +++ tools/testing/selftests/powerpc/pmu/ebb/.gitignore | 22 ++++++++++++++++++++++ .../selftests/powerpc/primitives/.gitignore | 1 + tools/testing/selftests/powerpc/tm/.gitignore | 1 + 6 files changed, 32 insertions(+) create mode 100644 tools/testing/selftests/powerpc/copyloops/.gitignore create mode 100644 tools/testing/selftests/powerpc/mm/.gitignore create mode 100644 tools/testing/selftests/powerpc/pmu/.gitignore create mode 100644 tools/testing/selftests/powerpc/pmu/ebb/.gitignore create mode 100644 tools/testing/selftests/powerpc/primitives/.gitignore create mode 100644 tools/testing/selftests/powerpc/tm/.gitignore (limited to 'tools') diff --git a/tools/testing/selftests/powerpc/copyloops/.gitignore b/tools/testing/selftests/powerpc/copyloops/.gitignore new file mode 100644 index 000000000000..25a192f62c4d --- /dev/null +++ b/tools/testing/selftests/powerpc/copyloops/.gitignore @@ -0,0 +1,4 @@ +copyuser_64 +copyuser_power7 +memcpy_64 +memcpy_power7 diff --git a/tools/testing/selftests/powerpc/mm/.gitignore b/tools/testing/selftests/powerpc/mm/.gitignore new file mode 100644 index 000000000000..156f4e89c2f1 --- /dev/null +++ b/tools/testing/selftests/powerpc/mm/.gitignore @@ -0,0 +1 @@ +hugetlb_vs_thp_test diff --git a/tools/testing/selftests/powerpc/pmu/.gitignore b/tools/testing/selftests/powerpc/pmu/.gitignore new file mode 100644 index 000000000000..e748f336eed3 --- /dev/null +++ b/tools/testing/selftests/powerpc/pmu/.gitignore @@ -0,0 +1,3 @@ +count_instructions +l3_bank_test +per_event_excludes diff --git a/tools/testing/selftests/powerpc/pmu/ebb/.gitignore b/tools/testing/selftests/powerpc/pmu/ebb/.gitignore new file mode 100644 index 000000000000..42bddbed8b64 --- /dev/null +++ b/tools/testing/selftests/powerpc/pmu/ebb/.gitignore @@ -0,0 +1,22 @@ +reg_access_test +event_attributes_test +cycles_test +cycles_with_freeze_test +pmc56_overflow_test +ebb_vs_cpu_event_test +cpu_event_vs_ebb_test +cpu_event_pinned_vs_ebb_test +task_event_vs_ebb_test +task_event_pinned_vs_ebb_test +multi_ebb_procs_test +multi_counter_test +pmae_handling_test +close_clears_pmcc_test +instruction_count_test +fork_cleanup_test +ebb_on_child_test +ebb_on_willing_child_test +back_to_back_ebbs_test +lost_exception_test +no_handler_test +cycles_with_mmcr2_test diff --git a/tools/testing/selftests/powerpc/primitives/.gitignore b/tools/testing/selftests/powerpc/primitives/.gitignore new file mode 100644 index 000000000000..4cc4e31bed1d --- /dev/null +++ b/tools/testing/selftests/powerpc/primitives/.gitignore @@ -0,0 +1 @@ +load_unaligned_zeropad diff --git a/tools/testing/selftests/powerpc/tm/.gitignore b/tools/testing/selftests/powerpc/tm/.gitignore new file mode 100644 index 000000000000..33d02cc54a3e --- /dev/null +++ b/tools/testing/selftests/powerpc/tm/.gitignore @@ -0,0 +1 @@ +tm-resched-dscr -- cgit v1.2.3 From 3776c2096790233b06c8b4e82046daa77c63fced Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Tue, 9 Dec 2014 11:44:07 +0530 Subject: selftests/powerpc: Add subpage protection self test. Signed-off-by: Paul Mackerras Signed-off-by: Aneesh Kumar K.V mpe: Fix compile errors and formatting. Add tempfile logic to Makefile. Signed-off-by: Michael Ellerman --- tools/testing/selftests/powerpc/mm/.gitignore | 2 + tools/testing/selftests/powerpc/mm/Makefile | 9 +- tools/testing/selftests/powerpc/mm/subpage_prot.c | 220 ++++++++++++++++++++++ 3 files changed, 228 insertions(+), 3 deletions(-) create mode 100644 tools/testing/selftests/powerpc/mm/subpage_prot.c (limited to 'tools') diff --git a/tools/testing/selftests/powerpc/mm/.gitignore b/tools/testing/selftests/powerpc/mm/.gitignore index 156f4e89c2f1..b43ade0ec861 100644 --- a/tools/testing/selftests/powerpc/mm/.gitignore +++ b/tools/testing/selftests/powerpc/mm/.gitignore @@ -1 +1,3 @@ hugetlb_vs_thp_test +subpage_prot +tempfile diff --git a/tools/testing/selftests/powerpc/mm/Makefile b/tools/testing/selftests/powerpc/mm/Makefile index 357ccbd6bad9..a14c538dd7f8 100644 --- a/tools/testing/selftests/powerpc/mm/Makefile +++ b/tools/testing/selftests/powerpc/mm/Makefile @@ -1,9 +1,9 @@ noarg: $(MAKE) -C ../ -PROGS := hugetlb_vs_thp_test +PROGS := hugetlb_vs_thp_test subpage_prot -all: $(PROGS) +all: $(PROGS) tempfile $(PROGS): ../harness.c @@ -12,7 +12,10 @@ run_tests: all ./$$PROG; \ done; +tempfile: + dd if=/dev/zero of=tempfile bs=64k count=1 + clean: - rm -f $(PROGS) + rm -f $(PROGS) tempfile .PHONY: all run_tests clean diff --git a/tools/testing/selftests/powerpc/mm/subpage_prot.c b/tools/testing/selftests/powerpc/mm/subpage_prot.c new file mode 100644 index 000000000000..440180ff8089 --- /dev/null +++ b/tools/testing/selftests/powerpc/mm/subpage_prot.c @@ -0,0 +1,220 @@ +/* + * Copyright IBM Corp. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2.1 of the GNU Lesser General Public License + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "utils.h" + +char *file_name; + +int in_test; +volatile int faulted; +volatile void *dar; +int errors; + +static void segv(int signum, siginfo_t *info, void *ctxt_v) +{ + ucontext_t *ctxt = (ucontext_t *)ctxt_v; + struct pt_regs *regs = ctxt->uc_mcontext.regs; + + if (!in_test) { + fprintf(stderr, "Segfault outside of test !\n"); + exit(1); + } + + faulted = 1; + dar = (void *)regs->dar; + regs->nip += 4; +} + +static inline void do_read(const volatile void *addr) +{ + int ret; + + asm volatile("lwz %0,0(%1); twi 0,%0,0; isync;\n" + : "=r" (ret) : "r" (addr) : "memory"); +} + +static inline void do_write(const volatile void *addr) +{ + int val = 0x1234567; + + asm volatile("stw %0,0(%1); sync; \n" + : : "r" (val), "r" (addr) : "memory"); +} + +static inline void check_faulted(void *addr, long page, long subpage, int write) +{ + int want_fault = (subpage == ((page + 3) % 16)); + + if (write) + want_fault |= (subpage == ((page + 1) % 16)); + + if (faulted != want_fault) { + printf("Failed at 0x%p (p=%ld,sp=%ld,w=%d), want=%s, got=%s !\n", + addr, page, subpage, write, + want_fault ? "fault" : "pass", + faulted ? "fault" : "pass"); + ++errors; + } + + if (faulted) { + if (dar != addr) { + printf("Fault expected at 0x%p and happened at 0x%p !\n", + addr, dar); + } + faulted = 0; + asm volatile("sync" : : : "memory"); + } +} + +static int run_test(void *addr, unsigned long size) +{ + unsigned int *map; + long i, j, pages, err; + + pages = size / 0x10000; + map = malloc(pages * 4); + assert(map); + + /* + * for each page, mark subpage i % 16 read only and subpage + * (i + 3) % 16 inaccessible + */ + for (i = 0; i < pages; i++) { + map[i] = (0x40000000 >> (((i + 1) * 2) % 32)) | + (0xc0000000 >> (((i + 3) * 2) % 32)); + } + + err = syscall(__NR_subpage_prot, addr, size, map); + if (err) { + perror("subpage_perm"); + return 1; + } + free(map); + + in_test = 1; + errors = 0; + for (i = 0; i < pages; i++) { + for (j = 0; j < 16; j++, addr += 0x1000) { + do_read(addr); + check_faulted(addr, i, j, 0); + do_write(addr); + check_faulted(addr, i, j, 1); + } + } + + in_test = 0; + if (errors) { + printf("%d errors detected\n", errors); + return 1; + } + + return 0; +} + +int test_anon(void) +{ + unsigned long align; + struct sigaction act = { + .sa_sigaction = segv, + .sa_flags = SA_SIGINFO + }; + void *mallocblock; + unsigned long mallocsize; + + if (getpagesize() != 0x10000) { + fprintf(stderr, "Kernel page size must be 64K!\n"); + return 1; + } + + sigaction(SIGSEGV, &act, NULL); + + mallocsize = 4 * 16 * 1024 * 1024; + + FAIL_IF(posix_memalign(&mallocblock, 64 * 1024, mallocsize)); + + align = (unsigned long)mallocblock; + if (align & 0xffff) + align = (align | 0xffff) + 1; + + mallocblock = (void *)align; + + printf("allocated malloc block of 0x%lx bytes at 0x%p\n", + mallocsize, mallocblock); + + printf("testing malloc block...\n"); + + return run_test(mallocblock, mallocsize); +} + +int test_file(void) +{ + struct sigaction act = { + .sa_sigaction = segv, + .sa_flags = SA_SIGINFO + }; + void *fileblock; + off_t filesize; + int fd; + + fd = open(file_name, O_RDWR); + if (fd == -1) { + perror("failed to open file"); + return 1; + } + sigaction(SIGSEGV, &act, NULL); + + filesize = lseek(fd, 0, SEEK_END); + if (filesize & 0xffff) + filesize &= ~0xfffful; + + fileblock = mmap(NULL, filesize, PROT_READ | PROT_WRITE, + MAP_SHARED, fd, 0); + if (fileblock == MAP_FAILED) { + perror("failed to map file"); + return 1; + } + printf("allocated %s for 0x%lx bytes at 0x%p\n", + file_name, filesize, fileblock); + + printf("testing file map...\n"); + + return run_test(fileblock, filesize); +} + +int main(int argc, char *argv[]) +{ + test_harness(test_anon, "subpage_prot_anon"); + + if (argc > 1) + file_name = argv[1]; + else + file_name = "tempfile"; + + test_harness(test_file, "subpage_prot_file"); + + return 0; +} -- cgit v1.2.3 From 521adf5357105f6f750fbe7bca958fab3b19df2e Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Wed, 21 Jan 2015 12:27:39 +1100 Subject: selftests/powerpc: Add memcmp testcase Add a testcase for the new ppc64 memcmp. Signed-off-by: Anton Blanchard Signed-off-by: Michael Ellerman --- tools/testing/selftests/powerpc/Makefile | 2 +- .../selftests/powerpc/stringloops/.gitignore | 1 + .../testing/selftests/powerpc/stringloops/Makefile | 20 ++++ .../selftests/powerpc/stringloops/asm/ppc_asm.h | 7 ++ .../testing/selftests/powerpc/stringloops/memcmp.c | 103 +++++++++++++++++++++ .../selftests/powerpc/stringloops/memcmp_64.S | 1 + 6 files changed, 133 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/powerpc/stringloops/.gitignore create mode 100644 tools/testing/selftests/powerpc/stringloops/Makefile create mode 100644 tools/testing/selftests/powerpc/stringloops/asm/ppc_asm.h create mode 100644 tools/testing/selftests/powerpc/stringloops/memcmp.c create mode 120000 tools/testing/selftests/powerpc/stringloops/memcmp_64.S (limited to 'tools') diff --git a/tools/testing/selftests/powerpc/Makefile b/tools/testing/selftests/powerpc/Makefile index f6ff90a76bd7..1d5e7ad2c460 100644 --- a/tools/testing/selftests/powerpc/Makefile +++ b/tools/testing/selftests/powerpc/Makefile @@ -13,7 +13,7 @@ CFLAGS := -Wall -O2 -flto -Wall -Werror -DGIT_VERSION='"$(GIT_VERSION)"' -I$(CUR export CC CFLAGS -TARGETS = pmu copyloops mm tm primitives +TARGETS = pmu copyloops mm tm primitives stringloops endif diff --git a/tools/testing/selftests/powerpc/stringloops/.gitignore b/tools/testing/selftests/powerpc/stringloops/.gitignore new file mode 100644 index 000000000000..0b43da74ee46 --- /dev/null +++ b/tools/testing/selftests/powerpc/stringloops/.gitignore @@ -0,0 +1 @@ +memcmp diff --git a/tools/testing/selftests/powerpc/stringloops/Makefile b/tools/testing/selftests/powerpc/stringloops/Makefile new file mode 100644 index 000000000000..506d77346477 --- /dev/null +++ b/tools/testing/selftests/powerpc/stringloops/Makefile @@ -0,0 +1,20 @@ +# The loops are all 64-bit code +CFLAGS += -m64 +CFLAGS += -I$(CURDIR) + +PROGS := memcmp +EXTRA_SOURCES := memcmp_64.S ../harness.c + +all: $(PROGS) + +$(PROGS): $(EXTRA_SOURCES) + +run_tests: all + @-for PROG in $(PROGS); do \ + ./$$PROG; \ + done; + +clean: + rm -f $(PROGS) *.o + +.PHONY: all run_tests clean diff --git a/tools/testing/selftests/powerpc/stringloops/asm/ppc_asm.h b/tools/testing/selftests/powerpc/stringloops/asm/ppc_asm.h new file mode 100644 index 000000000000..11bece87e880 --- /dev/null +++ b/tools/testing/selftests/powerpc/stringloops/asm/ppc_asm.h @@ -0,0 +1,7 @@ +#include + +#ifndef r1 +#define r1 sp +#endif + +#define _GLOBAL(A) FUNC_START(test_ ## A) diff --git a/tools/testing/selftests/powerpc/stringloops/memcmp.c b/tools/testing/selftests/powerpc/stringloops/memcmp.c new file mode 100644 index 000000000000..17417dd70708 --- /dev/null +++ b/tools/testing/selftests/powerpc/stringloops/memcmp.c @@ -0,0 +1,103 @@ +#include +#include +#include +#include "../utils.h" + +#define SIZE 256 +#define ITERATIONS 10000 + +int test_memcmp(const void *s1, const void *s2, size_t n); + +/* test all offsets and lengths */ +static void test_one(char *s1, char *s2) +{ + unsigned long offset, size; + + for (offset = 0; offset < SIZE; offset++) { + for (size = 0; size < (SIZE-offset); size++) { + int x, y; + unsigned long i; + + y = memcmp(s1+offset, s2+offset, size); + x = test_memcmp(s1+offset, s2+offset, size); + + if (((x ^ y) < 0) && /* Trick to compare sign */ + ((x | y) != 0)) { /* check for zero */ + printf("memcmp returned %d, should have returned %d (offset %ld size %ld)\n", x, y, offset, size); + + for (i = offset; i < offset+size; i++) + printf("%02x ", s1[i]); + printf("\n"); + + for (i = offset; i < offset+size; i++) + printf("%02x ", s2[i]); + printf("\n"); + abort(); + } + } + } +} + +static int testcase(void) +{ + char *s1; + char *s2; + unsigned long i; + + s1 = memalign(128, SIZE); + if (!s1) { + perror("memalign"); + exit(1); + } + + s2 = memalign(128, SIZE); + if (!s2) { + perror("memalign"); + exit(1); + } + + srandom(1); + + for (i = 0; i < ITERATIONS; i++) { + unsigned long j; + unsigned long change; + + for (j = 0; j < SIZE; j++) + s1[j] = random(); + + memcpy(s2, s1, SIZE); + + /* change one byte */ + change = random() % SIZE; + s2[change] = random() & 0xff; + + test_one(s1, s2); + } + + srandom(1); + + for (i = 0; i < ITERATIONS; i++) { + unsigned long j; + unsigned long change; + + for (j = 0; j < SIZE; j++) + s1[j] = random(); + + memcpy(s2, s1, SIZE); + + /* change multiple bytes, 1/8 of total */ + for (j = 0; j < SIZE / 8; j++) { + change = random() % SIZE; + s2[change] = random() & 0xff; + } + + test_one(s1, s2); + } + + return 0; +} + +int main(void) +{ + return test_harness(testcase, "memcmp"); +} diff --git a/tools/testing/selftests/powerpc/stringloops/memcmp_64.S b/tools/testing/selftests/powerpc/stringloops/memcmp_64.S new file mode 120000 index 000000000000..9bc87e438ae9 --- /dev/null +++ b/tools/testing/selftests/powerpc/stringloops/memcmp_64.S @@ -0,0 +1 @@ +../../../../../arch/powerpc/lib/memcmp_64.S \ No newline at end of file -- cgit v1.2.3 From 77ce247a8dbc587564dbfcb16fc6d09f6f85b31b Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Fri, 9 Jan 2015 22:18:52 -0800 Subject: Tools: hv: remove unused bytes_written from kvp_update_file() fwrite() does not actually return the number of bytes written and this value is being ignored anyway and ferror() is being called to check for an error. As we assign to this variable and never use it we get the following compile-time warning: hv_kvp_daemon.c:149:9: warning: variable .bytes_written. set but not used [-Wunused-but-set-variable] Remove bytes_written completely. Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- tools/hv/hv_kvp_daemon.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c index 4b3ee3521bde..fe790090f328 100644 --- a/tools/hv/hv_kvp_daemon.c +++ b/tools/hv/hv_kvp_daemon.c @@ -147,7 +147,6 @@ static void kvp_release_lock(int pool) static void kvp_update_file(int pool) { FILE *filep; - size_t bytes_written; /* * We are going to write our in-memory registry out to @@ -163,8 +162,7 @@ static void kvp_update_file(int pool) exit(EXIT_FAILURE); } - bytes_written = fwrite(kvp_file_info[pool].records, - sizeof(struct kvp_record), + fwrite(kvp_file_info[pool].records, sizeof(struct kvp_record), kvp_file_info[pool].num_records, filep); if (ferror(filep) || fclose(filep)) { -- cgit v1.2.3 From 69258c058d0a7e0a6433dae7e336c316d28129fc Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Fri, 9 Jan 2015 22:18:53 -0800 Subject: Tools: hv: address compiler warnings for hv_kvp_daemon.c This patch addresses two types of compiler warnings: ... warning: comparison between signed and unsigned integer expressions [-Wsign-compare] and ... warning: pointer targets in passing argument N of .kvp_.... differ in signedness [-Wpointer-sign] Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- tools/hv/hv_kvp_daemon.c | 25 ++++++++++++------------- 1 file changed, 12 insertions(+), 13 deletions(-) (limited to 'tools') diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c index fe790090f328..408bb076a234 100644 --- a/tools/hv/hv_kvp_daemon.c +++ b/tools/hv/hv_kvp_daemon.c @@ -308,7 +308,7 @@ static int kvp_file_init(void) return 0; } -static int kvp_key_delete(int pool, const char *key, int key_size) +static int kvp_key_delete(int pool, const __u8 *key, int key_size) { int i; int j, k; @@ -351,8 +351,8 @@ static int kvp_key_delete(int pool, const char *key, int key_size) return 1; } -static int kvp_key_add_or_modify(int pool, const char *key, int key_size, const char *value, - int value_size) +static int kvp_key_add_or_modify(int pool, const __u8 *key, int key_size, + const __u8 *value, int value_size) { int i; int num_records; @@ -405,7 +405,7 @@ static int kvp_key_add_or_modify(int pool, const char *key, int key_size, const return 0; } -static int kvp_get_value(int pool, const char *key, int key_size, char *value, +static int kvp_get_value(int pool, const __u8 *key, int key_size, __u8 *value, int value_size) { int i; @@ -437,8 +437,8 @@ static int kvp_get_value(int pool, const char *key, int key_size, char *value, return 1; } -static int kvp_pool_enumerate(int pool, int index, char *key, int key_size, - char *value, int value_size) +static int kvp_pool_enumerate(int pool, int index, __u8 *key, int key_size, + __u8 *value, int value_size) { struct kvp_record *record; @@ -659,7 +659,7 @@ static char *kvp_if_name_to_mac(char *if_name) char *p, *x; char buf[256]; char addr_file[256]; - int i; + unsigned int i; char *mac_addr = NULL; snprintf(addr_file, sizeof(addr_file), "%s%s%s", "/sys/class/net/", @@ -698,7 +698,7 @@ static char *kvp_mac_to_if_name(char *mac) char buf[256]; char *kvp_net_dir = "/sys/class/net/"; char dev_id[256]; - int i; + unsigned int i; dir = opendir(kvp_net_dir); if (dir == NULL) @@ -748,7 +748,7 @@ static char *kvp_mac_to_if_name(char *mac) static void kvp_process_ipconfig_file(char *cmd, - char *config_buf, int len, + char *config_buf, unsigned int len, int element_size, int offset) { char buf[256]; @@ -766,7 +766,7 @@ static void kvp_process_ipconfig_file(char *cmd, if (offset == 0) memset(config_buf, 0, len); while ((p = fgets(buf, sizeof(buf), file)) != NULL) { - if ((len - strlen(config_buf)) < (element_size + 1)) + if (len < strlen(config_buf) + element_size + 1) break; x = strchr(p, '\n'); @@ -914,7 +914,7 @@ static int kvp_process_ip_address(void *addrp, static int kvp_get_ip_info(int family, char *if_name, int op, - void *out_buffer, int length) + void *out_buffer, unsigned int length) { struct ifaddrs *ifap; struct ifaddrs *curp; @@ -1017,8 +1017,7 @@ kvp_get_ip_info(int family, char *if_name, int op, weight += hweight32(&w[i]); sprintf(cidr_mask, "/%d", weight); - if ((length - sn_offset) < - (strlen(cidr_mask) + 1)) + if (length < sn_offset + strlen(cidr_mask) + 1) goto gather_ipaddr; if (sn_offset == 0) -- cgit v1.2.3 From aba474b8185d60ca8cdbf3049fe6d655aa761e23 Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Fri, 9 Jan 2015 22:18:54 -0800 Subject: Tools: hv: address compiler warnings for hv_fcopy_daemon.c This patch addresses two types of compiler warnings: ... warning: unused variable .fd. [-Wunused-variable] and ... warning: format .%s. expects argument of type .char *., but argument 5 has type .__u16 *. [-Wformat=] Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- tools/hv/hv_fcopy_daemon.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/hv/hv_fcopy_daemon.c b/tools/hv/hv_fcopy_daemon.c index f437d739f37d..1a238726dda6 100644 --- a/tools/hv/hv_fcopy_daemon.c +++ b/tools/hv/hv_fcopy_daemon.c @@ -51,7 +51,7 @@ static int hv_start_fcopy(struct hv_start_fcopy *smsg) p = (char *)smsg->path_name; snprintf(target_fname, sizeof(target_fname), "%s/%s", - (char *)smsg->path_name, smsg->file_name); + (char *)smsg->path_name, (char *)smsg->file_name); syslog(LOG_INFO, "Target file name: %s", target_fname); /* @@ -137,7 +137,7 @@ void print_usage(char *argv[]) int main(int argc, char *argv[]) { - int fd, fcopy_fd, len; + int fcopy_fd, len; int error; int daemonize = 1, long_index = 0, opt; int version = FCOPY_CURRENT_VERSION; -- cgit v1.2.3 From c1136da62170465920eea1ae9ba9ce2234091f77 Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Fri, 9 Jan 2015 22:18:55 -0800 Subject: Tools: hv: do not add redundant '/' in hv_start_fcopy() We don't need to add additional '/' to smsg->path_name as snprintf("%s/%s") does the right thing. Without the patch we get doubled '//' in the log message. Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- tools/hv/hv_fcopy_daemon.c | 6 ------ 1 file changed, 6 deletions(-) (limited to 'tools') diff --git a/tools/hv/hv_fcopy_daemon.c b/tools/hv/hv_fcopy_daemon.c index 1a238726dda6..9445d8f264a4 100644 --- a/tools/hv/hv_fcopy_daemon.c +++ b/tools/hv/hv_fcopy_daemon.c @@ -43,12 +43,6 @@ static int hv_start_fcopy(struct hv_start_fcopy *smsg) int error = HV_E_FAIL; char *q, *p; - /* - * If possile append a path seperator to the path. - */ - if (strlen((char *)smsg->path_name) < (W_MAX_PATH - 2)) - strcat((char *)smsg->path_name, "/"); - p = (char *)smsg->path_name; snprintf(target_fname, sizeof(target_fname), "%s/%s", (char *)smsg->path_name, (char *)smsg->file_name); -- cgit v1.2.3 From 3d199b5be53348bef84883013c484b414adf0a2e Mon Sep 17 00:00:00 2001 From: David Ahern Date: Thu, 18 Dec 2014 19:11:11 -0700 Subject: tools lib traceevent: Add support for IP address formats Add helpers for the following kernel formats: %pi4 print an IPv4 address with leading zeros %pI4 print an IPv4 address without leading zeros %pi6 print an IPv6 address without colons %pI6 print an IPv6 address with colons %pI6c print an IPv6 address in compressed form with colons %pISpc print an IP address from a sockaddr Allows these formats to be used in tracepoints. Quite a bit of this is adapted from code in lib/vsprintf.c. v4: - fixed pI6c description in git commit message per Valdis' comment v3: - use of 'c' and 'p' requires 'I' v2: - pass ptr+1 to print_ip_arg per Namhyung's comments - added field length checks to sockaddr function Signed-off-by: David Ahern Acked-by: Steven Rostedt Cc: Jiri Olsa Cc: Namhyung Kim Link: http://lkml.kernel.org/r/1418955071-36241-1-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/lib/traceevent/event-parse.c | 328 +++++++++++++++++++++++++++++++++++++ 1 file changed, 328 insertions(+) (limited to 'tools') diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c index cf3a44bf1ec3..afe20ed9fac8 100644 --- a/tools/lib/traceevent/event-parse.c +++ b/tools/lib/traceevent/event-parse.c @@ -32,6 +32,7 @@ #include #include +#include #include "event-parse.h" #include "event-utils.h" @@ -4149,6 +4150,324 @@ static void print_mac_arg(struct trace_seq *s, int mac, void *data, int size, trace_seq_printf(s, fmt, buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]); } +static void print_ip4_addr(struct trace_seq *s, char i, unsigned char *buf) +{ + const char *fmt; + + if (i == 'i') + fmt = "%03d.%03d.%03d.%03d"; + else + fmt = "%d.%d.%d.%d"; + + trace_seq_printf(s, fmt, buf[0], buf[1], buf[2], buf[3]); +} + +static inline bool ipv6_addr_v4mapped(const struct in6_addr *a) +{ + return ((unsigned long)(a->s6_addr32[0] | a->s6_addr32[1]) | + (unsigned long)(a->s6_addr32[2] ^ htonl(0x0000ffff))) == 0UL; +} + +static inline bool ipv6_addr_is_isatap(const struct in6_addr *addr) +{ + return (addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE); +} + +static void print_ip6c_addr(struct trace_seq *s, unsigned char *addr) +{ + int i, j, range; + unsigned char zerolength[8]; + int longest = 1; + int colonpos = -1; + uint16_t word; + uint8_t hi, lo; + bool needcolon = false; + bool useIPv4; + struct in6_addr in6; + + memcpy(&in6, addr, sizeof(struct in6_addr)); + + useIPv4 = ipv6_addr_v4mapped(&in6) || ipv6_addr_is_isatap(&in6); + + memset(zerolength, 0, sizeof(zerolength)); + + if (useIPv4) + range = 6; + else + range = 8; + + /* find position of longest 0 run */ + for (i = 0; i < range; i++) { + for (j = i; j < range; j++) { + if (in6.s6_addr16[j] != 0) + break; + zerolength[i]++; + } + } + for (i = 0; i < range; i++) { + if (zerolength[i] > longest) { + longest = zerolength[i]; + colonpos = i; + } + } + if (longest == 1) /* don't compress a single 0 */ + colonpos = -1; + + /* emit address */ + for (i = 0; i < range; i++) { + if (i == colonpos) { + if (needcolon || i == 0) + trace_seq_printf(s, ":"); + trace_seq_printf(s, ":"); + needcolon = false; + i += longest - 1; + continue; + } + if (needcolon) { + trace_seq_printf(s, ":"); + needcolon = false; + } + /* hex u16 without leading 0s */ + word = ntohs(in6.s6_addr16[i]); + hi = word >> 8; + lo = word & 0xff; + if (hi) + trace_seq_printf(s, "%x%02x", hi, lo); + else + trace_seq_printf(s, "%x", lo); + + needcolon = true; + } + + if (useIPv4) { + if (needcolon) + trace_seq_printf(s, ":"); + print_ip4_addr(s, 'I', &in6.s6_addr[12]); + } + + return; +} + +static void print_ip6_addr(struct trace_seq *s, char i, unsigned char *buf) +{ + int j; + + for (j = 0; j < 16; j += 2) { + trace_seq_printf(s, "%02x%02x", buf[j], buf[j+1]); + if (i == 'I' && j < 14) + trace_seq_printf(s, ":"); + } +} + +/* + * %pi4 print an IPv4 address with leading zeros + * %pI4 print an IPv4 address without leading zeros + * %pi6 print an IPv6 address without colons + * %pI6 print an IPv6 address with colons + * %pI6c print an IPv6 address in compressed form with colons + * %pISpc print an IP address based on sockaddr; p adds port. + */ +static int print_ipv4_arg(struct trace_seq *s, const char *ptr, char i, + void *data, int size, struct event_format *event, + struct print_arg *arg) +{ + unsigned char *buf; + + if (arg->type == PRINT_FUNC) { + process_defined_func(s, data, size, event, arg); + return 0; + } + + if (arg->type != PRINT_FIELD) { + trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type); + return 0; + } + + if (!arg->field.field) { + arg->field.field = + pevent_find_any_field(event, arg->field.name); + if (!arg->field.field) { + do_warning("%s: field %s not found", + __func__, arg->field.name); + return 0; + } + } + + buf = data + arg->field.field->offset; + + if (arg->field.field->size != 4) { + trace_seq_printf(s, "INVALIDIPv4"); + return 0; + } + print_ip4_addr(s, i, buf); + + return 0; +} + +static int print_ipv6_arg(struct trace_seq *s, const char *ptr, char i, + void *data, int size, struct event_format *event, + struct print_arg *arg) +{ + char have_c = 0; + unsigned char *buf; + int rc = 0; + + /* pI6c */ + if (i == 'I' && *ptr == 'c') { + have_c = 1; + ptr++; + rc++; + } + + if (arg->type == PRINT_FUNC) { + process_defined_func(s, data, size, event, arg); + return rc; + } + + if (arg->type != PRINT_FIELD) { + trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type); + return rc; + } + + if (!arg->field.field) { + arg->field.field = + pevent_find_any_field(event, arg->field.name); + if (!arg->field.field) { + do_warning("%s: field %s not found", + __func__, arg->field.name); + return rc; + } + } + + buf = data + arg->field.field->offset; + + if (arg->field.field->size != 16) { + trace_seq_printf(s, "INVALIDIPv6"); + return rc; + } + + if (have_c) + print_ip6c_addr(s, buf); + else + print_ip6_addr(s, i, buf); + + return rc; +} + +static int print_ipsa_arg(struct trace_seq *s, const char *ptr, char i, + void *data, int size, struct event_format *event, + struct print_arg *arg) +{ + char have_c = 0, have_p = 0; + unsigned char *buf; + struct sockaddr_storage *sa; + int rc = 0; + + /* pISpc */ + if (i == 'I') { + if (*ptr == 'p') { + have_p = 1; + ptr++; + rc++; + } + if (*ptr == 'c') { + have_c = 1; + ptr++; + rc++; + } + } + + if (arg->type == PRINT_FUNC) { + process_defined_func(s, data, size, event, arg); + return rc; + } + + if (arg->type != PRINT_FIELD) { + trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type); + return rc; + } + + if (!arg->field.field) { + arg->field.field = + pevent_find_any_field(event, arg->field.name); + if (!arg->field.field) { + do_warning("%s: field %s not found", + __func__, arg->field.name); + return rc; + } + } + + sa = (struct sockaddr_storage *) (data + arg->field.field->offset); + + if (sa->ss_family == AF_INET) { + struct sockaddr_in *sa4 = (struct sockaddr_in *) sa; + + if (arg->field.field->size < sizeof(struct sockaddr_in)) { + trace_seq_printf(s, "INVALIDIPv4"); + return rc; + } + + print_ip4_addr(s, i, (unsigned char *) &sa4->sin_addr); + if (have_p) + trace_seq_printf(s, ":%d", ntohs(sa4->sin_port)); + + + } else if (sa->ss_family == AF_INET6) { + struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) sa; + + if (arg->field.field->size < sizeof(struct sockaddr_in6)) { + trace_seq_printf(s, "INVALIDIPv6"); + return rc; + } + + if (have_p) + trace_seq_printf(s, "["); + + buf = (unsigned char *) &sa6->sin6_addr; + if (have_c) + print_ip6c_addr(s, buf); + else + print_ip6_addr(s, i, buf); + + if (have_p) + trace_seq_printf(s, "]:%d", ntohs(sa6->sin6_port)); + } + + return rc; +} + +static int print_ip_arg(struct trace_seq *s, const char *ptr, + void *data, int size, struct event_format *event, + struct print_arg *arg) +{ + char i = *ptr; /* 'i' or 'I' */ + char ver; + int rc = 0; + + ptr++; + rc++; + + ver = *ptr; + ptr++; + rc++; + + switch (ver) { + case '4': + rc += print_ipv4_arg(s, ptr, i, data, size, event, arg); + break; + case '6': + rc += print_ipv6_arg(s, ptr, i, data, size, event, arg); + break; + case 'S': + rc += print_ipsa_arg(s, ptr, i, data, size, event, arg); + break; + default: + return 0; + } + + return rc; +} + static int is_printable_array(char *p, unsigned int len) { unsigned int i; @@ -4337,6 +4656,15 @@ static void pretty_print(struct trace_seq *s, void *data, int size, struct event ptr++; arg = arg->next; break; + } else if (*(ptr+1) == 'I' || *(ptr+1) == 'i') { + int n; + + n = print_ip_arg(s, ptr+1, data, size, event, arg); + if (n > 0) { + ptr += n; + arg = arg->next; + break; + } } /* fall through */ -- cgit v1.2.3 From b53486e08377506179e5da0abe8b960dba5c483a Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Tue, 27 Jan 2015 17:02:02 -0500 Subject: ktest: Add timings for commands I find that I usually like to see how long a make or other command takes, and adding a start and end time and reporting how long each command runs (in seconds) is helpful. Signed-off-by: Steven Rostedt --- tools/testing/ktest/ktest.pl | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'tools') diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl index b9cd036f0442..27273c228d92 100755 --- a/tools/testing/ktest/ktest.pl +++ b/tools/testing/ktest/ktest.pl @@ -1534,10 +1534,14 @@ sub fail { sub run_command { my ($command, $redirect) = @_; + my $start_time; + my $end_time; my $dolog = 0; my $dord = 0; my $pid; + $start_time = time; + $command =~ s/\$SSH_USER/$ssh_user/g; $command =~ s/\$MACHINE/$machine/g; @@ -1570,6 +1574,15 @@ sub run_command { close(LOG) if ($dolog); close(RD) if ($dord); + $end_time = time; + my $delta = $end_time - $start_time; + + if ($delta == 1) { + doprint "[1 second] "; + } else { + doprint "[$delta seconds] "; + } + if ($failed) { doprint "FAILED!\n"; } else { -- cgit v1.2.3 From 988427829bcd230c78106d28dbfa85d45d182909 Mon Sep 17 00:00:00 2001 From: Josh Poimboeuf Date: Tue, 27 Jan 2015 12:10:04 -0600 Subject: ktest: Restore tty settings after closing console When ktest runs the console program as a child process, the parent and child share the same tty for stdin and stderr. This is problematic when using a libvirt target. The "virsh console" program makes a lot of changes to the tty settings, making ktest's output hard to read (carriage returns don't work). After ktest exits, the terminal is unusable (CRs broken, stdin isn't echoed). I think the best way to fix this issue would be to create a pseudoterminal (pty pair) so the child process would have a dedicated tty, and then use pipes to connect the two ttys. I'm not sure if that's overkill, but it's far beyond my current Perl abilities. This patch is a much easier way to (partially) fix this issue. It saves the tty settings before opening the console and restores them after closing it. There are still a few places where ktest prints mangled output while the console is open, but the output is much more legible overall, and the terminal works just fine after ktest exits. Link: http://lkml.kernel.org/r/1bb89abc0025cf1d6da657c7ba58bbeb4381a515.1422382008.git.jpoimboe@redhat.com Signed-off-by: Josh Poimboeuf Signed-off-by: Steven Rostedt --- tools/testing/ktest/ktest.pl | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'tools') diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl index 27273c228d92..1dae000f79f8 100755 --- a/tools/testing/ktest/ktest.pl +++ b/tools/testing/ktest/ktest.pl @@ -178,6 +178,7 @@ my $checkout; my $localversion; my $iteration = 0; my $successes = 0; +my $stty; my $bisect_good; my $bisect_bad; @@ -1349,6 +1350,9 @@ sub open_console { my $flags; + # save terminal settings + $stty = `stty -g`; + my $pid = open($fp, "$console|") or dodie "Can't open console $console"; @@ -1368,6 +1372,9 @@ sub close_console { print "closing!\n"; close($fp); + + # restore terminal settings + system("stty $stty"); } sub start_monitor { -- cgit v1.2.3 From 8d9cbd8f870e1aab00fb0f8a465887877a1d6f82 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Tue, 13 Jan 2015 19:13:23 +0530 Subject: perf evsel: Don't rely on malloc working for sz 0 When running perf on ARC (uClibc based userspace), ran into this issue ------------->8---------------- [ARCLinux]$ ./perf record ls bin etc perf sys debug init perf.data tmp [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.001 MB perf.data (~24 samples) ] [ARCLinux]$ ./perf report incompatible file format (rerun with -v to learn more) ------------->8---------------- The problem happens in the following call stack when zalloc is called with size zero glibc default / uClibc with MALLOC_GLIBC_COMPAT are OK, but not if that config option is not enabled. cmd_report perf_session__new perf_session__open perf_session__read_header read_attr(fd, header, &f_attr) nr_ids = f_attr.ids.size / sizeof(u64); <-- 0 perf_evsel__alloc_id(vsel, 1, nr_ids) zalloc(ncpus * nthreads * sizeof(u64)) <-- 0 header.c: read_attr() (gdb) p *f_attr $17 = { attr = { type = 0, size = 96, config = 0, { sample_period = 4000, sample_freq = 4000 }, ... ids = { offset = 104, size = 0 <------ } } Signed-off-by: Vineet Gupta Suggested-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Alexey Brodkin Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1421156604-30603-5-git-send-email-vgupta@synopsys.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/evsel.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'tools') diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 1e90c8557ede..1d826d63bc20 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -797,6 +797,9 @@ int perf_evsel__enable(struct perf_evsel *evsel, int ncpus, int nthreads) int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads) { + if (ncpus == 0 || nthreads == 0) + return 0; + if (evsel->system_wide) nthreads = 1; -- cgit v1.2.3 From 459a3df76c99124fd222586be7f10f862547e7a9 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Tue, 13 Jan 2015 19:13:24 +0530 Subject: perf tools: Provide stub for missing pthread_attr_setaffinity_np uClibc Linuxthreads.old doesn't support the pthread_attr_setaffinity_np() functioo: ----------------->8----------------------- CC bench/futex-hash.o CC bench/futex-wake.o bench/futex-hash.c: In function 'bench_futex_hash': bench/futex-hash.c:161:3: error: implicit declaration of function 'pthread_attr_setaffinity_np' [-Werror=implicit-function-declaration] ret = pthread_attr_setaffinity_np(&thread_attr, sizeof(cpu_set_t), &cpu); ^ bench/futex-hash.c:161:3: error: nested extern declaration of 'pthread_attr_setaffinity_np' [-Werror=nested-externs] ----------------->8----------------------- So introduce a test to check that and if not available provide a stub. Signed-off-by: Vineet Gupta Acked-by: Jiri Olsa Cc: Alexey Brodkin Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1421156604-30603-6-git-send-email-vgupta@synopsys.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/bench/futex.h | 13 +++++++++++++ tools/perf/config/Makefile | 6 ++++++ tools/perf/config/feature-checks/Makefile | 4 ++++ tools/perf/config/feature-checks/test-all.c | 5 +++++ .../feature-checks/test-pthread-attr-setaffinity-np.c | 14 ++++++++++++++ 5 files changed, 42 insertions(+) create mode 100644 tools/perf/config/feature-checks/test-pthread-attr-setaffinity-np.c (limited to 'tools') diff --git a/tools/perf/bench/futex.h b/tools/perf/bench/futex.h index 71f2844cf97f..7ed22ff1e1ac 100644 --- a/tools/perf/bench/futex.h +++ b/tools/perf/bench/futex.h @@ -68,4 +68,17 @@ futex_cmp_requeue(u_int32_t *uaddr, u_int32_t val, u_int32_t *uaddr2, int nr_wak val, opflags); } +#ifndef HAVE_PTHREAD_ATTR_SETAFFINITY_NP +#include +static inline int pthread_attr_setaffinity_np(pthread_attr_t *attr, + size_t cpusetsize, + cpu_set_t *cpuset) +{ + attr = attr; + cpusetsize = cpusetsize; + cpuset = cpuset; + return 0; +} +#endif + #endif /* _FUTEX_H */ diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile index 648e31ff4021..cc224080b525 100644 --- a/tools/perf/config/Makefile +++ b/tools/perf/config/Makefile @@ -198,6 +198,7 @@ CORE_FEATURE_TESTS = \ libpython-version \ libslang \ libunwind \ + pthread-attr-setaffinity-np \ stackprotector-all \ timerfd \ libdw-dwarf-unwind \ @@ -226,6 +227,7 @@ VF_FEATURE_TESTS = \ libelf-getphdrnum \ libelf-mmap \ libpython-version \ + pthread-attr-setaffinity-np \ stackprotector-all \ timerfd \ libunwind-debug-frame \ @@ -301,6 +303,10 @@ ifeq ($(feature-sync-compare-and-swap), 1) CFLAGS += -DHAVE_SYNC_COMPARE_AND_SWAP_SUPPORT endif +ifeq ($(feature-pthread-attr-setaffinity-np), 1) + CFLAGS += -DHAVE_PTHREAD_ATTR_SETAFFINITY_NP +endif + ifndef NO_BIONIC $(call feature_check,bionic) ifeq ($(feature-bionic), 1) diff --git a/tools/perf/config/feature-checks/Makefile b/tools/perf/config/feature-checks/Makefile index 53f19b5dbc37..42ac05aaf8ac 100644 --- a/tools/perf/config/feature-checks/Makefile +++ b/tools/perf/config/feature-checks/Makefile @@ -25,6 +25,7 @@ FILES= \ test-libslang.bin \ test-libunwind.bin \ test-libunwind-debug-frame.bin \ + test-pthread-attr-setaffinity-np.bin \ test-stackprotector-all.bin \ test-timerfd.bin \ test-libdw-dwarf-unwind.bin \ @@ -47,6 +48,9 @@ test-all.bin: test-hello.bin: $(BUILD) +test-pthread-attr-setaffinity-np.bin: + $(BUILD) -Werror -lpthread + test-stackprotector-all.bin: $(BUILD) -Werror -fstack-protector-all diff --git a/tools/perf/config/feature-checks/test-all.c b/tools/perf/config/feature-checks/test-all.c index 652e0098eba6..6d4d09323922 100644 --- a/tools/perf/config/feature-checks/test-all.c +++ b/tools/perf/config/feature-checks/test-all.c @@ -97,6 +97,10 @@ # include "test-zlib.c" #undef main +#define main main_test_pthread_attr_setaffinity_np +# include "test-pthread_attr_setaffinity_np.c" +#undef main + int main(int argc, char *argv[]) { main_test_libpython(); @@ -121,6 +125,7 @@ int main(int argc, char *argv[]) main_test_libdw_dwarf_unwind(); main_test_sync_compare_and_swap(argc, argv); main_test_zlib(); + main_test_pthread_attr_setaffinity_np(); return 0; } diff --git a/tools/perf/config/feature-checks/test-pthread-attr-setaffinity-np.c b/tools/perf/config/feature-checks/test-pthread-attr-setaffinity-np.c new file mode 100644 index 000000000000..0a0d3ecb4e8a --- /dev/null +++ b/tools/perf/config/feature-checks/test-pthread-attr-setaffinity-np.c @@ -0,0 +1,14 @@ +#include +#include + +int main(void) +{ + int ret = 0; + pthread_attr_t thread_attr; + + pthread_attr_init(&thread_attr); + /* don't care abt exact args, just the API itself in libpthread */ + ret = pthread_attr_setaffinity_np(&thread_attr, 0, NULL); + + return ret; +} -- cgit v1.2.3 From 38fa3dc15c6948135977d50ecf90061f21cebc15 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Wed, 28 Jan 2015 09:43:01 -0500 Subject: ktest: Show times for build, install, boot and test Seeing the times for how long a build, install, reboot and the test takes is helpful for analyzing the test process. Seeing how different changes affect the timings. Show the build, install, boot and test times when at the end of the test, or between each interval for tests that do those mulitple times (like bisect and patchcheck). Signed-off-by: Steven Rostedt --- tools/testing/ktest/ktest.pl | 109 +++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 105 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl index 1dae000f79f8..177319822401 100755 --- a/tools/testing/ktest/ktest.pl +++ b/tools/testing/ktest/ktest.pl @@ -198,6 +198,11 @@ my $patchcheck_start; my $patchcheck_cherry; my $patchcheck_end; +my $build_time; +my $install_time; +my $reboot_time; +my $test_time; + # set when a test is something other that just building or install # which would require more options. my $buildonly = 1; @@ -555,6 +560,66 @@ sub get_mandatory_config { } } +sub show_time { + my ($time) = @_; + + my $hours = 0; + my $minutes = 0; + + if ($time > 3600) { + $hours = int($time / 3600); + $time -= $hours * 3600; + } + if ($time > 60) { + $minutes = int($time / 60); + $time -= $minutes * 60; + } + + if ($hours > 0) { + doprint "$hours hour"; + doprint "s" if ($hours > 1); + doprint " "; + } + + if ($minutes > 0) { + doprint "$minutes minute"; + doprint "s" if ($minutes > 1); + doprint " "; + } + + doprint "$time second"; + doprint "s" if ($time != 1); +} + +sub print_times { + doprint "\n"; + if ($build_time) { + doprint "Build time: "; + show_time($build_time); + doprint "\n"; + } + if ($install_time) { + doprint "Install time: "; + show_time($install_time); + doprint "\n"; + } + if ($reboot_time) { + doprint "Reboot time: "; + show_time($reboot_time); + doprint "\n"; + } + if ($test_time) { + doprint "Test time: "; + show_time($test_time); + doprint "\n"; + } + # reset for iterations like bisect + $build_time = 0; + $install_time = 0; + $reboot_time = 0; + $test_time = 0; +} + sub get_mandatory_configs { get_mandatory_config("MACHINE"); get_mandatory_config("BUILD_DIR"); @@ -1786,6 +1851,8 @@ sub monitor { my $skip_call_trace = 0; my $loops; + my $start_time = time; + wait_for_monitor 5; my $line; @@ -1910,6 +1977,9 @@ sub monitor { } } + my $end_time = time; + $reboot_time = $end_time - $start_time; + close(DMESG); if ($bug) { @@ -1958,6 +2028,8 @@ sub install { return if ($no_install); + my $start_time = time; + if (defined($pre_install)) { my $cp_pre_install = eval_kernel_version $pre_install; run_command "$cp_pre_install" or @@ -1989,6 +2061,8 @@ sub install { if (!$install_mods) { do_post_install; doprint "No modules needed\n"; + my $end_time = time; + $install_time = $end_time - $start_time; return; } @@ -2016,6 +2090,9 @@ sub install { run_ssh "rm -f /tmp/$modtar"; do_post_install; + + my $end_time = time; + $install_time = $end_time - $start_time; } sub get_version { @@ -2228,6 +2305,8 @@ sub build { unlink $buildlog; + my $start_time = time; + # Failed builds should not reboot the target my $save_no_reboot = $no_reboot; $no_reboot = 1; @@ -2313,6 +2392,9 @@ sub build { $no_reboot = $save_no_reboot; + my $end_time = time; + $build_time = $end_time - $start_time; + return 1; } @@ -2403,6 +2485,8 @@ sub do_run_test { my $bug = 0; my $bug_ignored = 0; + my $start_time = time; + wait_for_monitor 1; doprint "run test $run_test\n"; @@ -2469,6 +2553,9 @@ sub do_run_test { waitpid $child_pid, 0; $child_exit = $?; + my $end_time = time; + $test_time = $end_time - $start_time; + if (!$bug && $in_bisect) { if (defined($bisect_ret_good)) { if ($child_exit == $bisect_ret_good) { @@ -2775,6 +2862,7 @@ sub bisect { do { $result = run_bisect $type; $test = run_git_bisect "git bisect $result"; + print_times; } while ($test); run_command "git bisect log" or @@ -3188,6 +3276,7 @@ sub config_bisect { do { $ret = run_config_bisect \%good_configs, \%bad_configs; + print_times; } while (!$ret); return $ret if ($ret < 0); @@ -3317,10 +3406,12 @@ sub patchcheck { do_run_test or $failed = 1; } end_monitor; - return 0 if ($failed); - + if ($failed) { + print_times; + return 0; + } patchcheck_reboot; - + print_times; } $in_patchcheck = 0; success $i; @@ -4020,6 +4111,11 @@ for (my $i = 1; $i <= $opt{"NUM_TESTS"}; $i++) { $iteration = $i; + $build_time = 0; + $install_time = 0; + $reboot_time = 0; + $test_time = 0; + undef %force_config; my $makecmd = set_test_option("MAKE_CMD", $i); @@ -4183,9 +4279,14 @@ for (my $i = 1; $i <= $opt{"NUM_TESTS"}; $i++) { do_run_test or $failed = 1; } end_monitor; - next if ($failed); + if ($failed) { + print_times; + next; + } } + print_times; + success $i; } -- cgit v1.2.3 From 64d982838e89e0d3981bfe825e0e76b36e106332 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Wed, 28 Jan 2015 15:17:35 -0500 Subject: ktest: Rename start_monitor_and_boot to start_monitor_and_install The function start_monitor_and_boot is a misnomer. It use to, but now it starts the monitor and installs. It does not boot. Rename it before I get confused by it again. Signed-off-by: Steven Rostedt --- tools/testing/ktest/ktest.pl | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl index 177319822401..6ae890a0d486 100755 --- a/tools/testing/ktest/ktest.pl +++ b/tools/testing/ktest/ktest.pl @@ -2105,7 +2105,7 @@ sub get_version { $have_version = 1; } -sub start_monitor_and_boot { +sub start_monitor_and_install { # Make sure the stable kernel has finished booting # Install bisects, don't need console @@ -2656,7 +2656,7 @@ sub run_bisect_test { dodie "Failed on build" if $failed; # Now boot the box - start_monitor_and_boot or $failed = 1; + start_monitor_and_install or $failed = 1; if ($type ne "boot") { if ($failed && $bisect_skip) { @@ -3400,7 +3400,7 @@ sub patchcheck { my $failed = 0; - start_monitor_and_boot or $failed = 1; + start_monitor_and_install or $failed = 1; if (!$failed && $type ne "boot"){ do_run_test or $failed = 1; @@ -3864,7 +3864,7 @@ sub make_min_config { my $failed = 0; build "oldconfig" or $failed = 1; if (!$failed) { - start_monitor_and_boot or $failed = 1; + start_monitor_and_install or $failed = 1; if ($type eq "test" && !$failed) { do_run_test or $failed = 1; @@ -4273,7 +4273,7 @@ for (my $i = 1; $i <= $opt{"NUM_TESTS"}; $i++) { if ($test_type ne "build") { my $failed = 0; - start_monitor_and_boot or $failed = 1; + start_monitor_and_install or $failed = 1; if (!$failed && $test_type ne "boot" && defined($run_test)) { do_run_test or $failed = 1; -- cgit v1.2.3 From f1f13af99a903ae873f5373e965508e0486c1c29 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 29 Jan 2015 17:07:21 +0900 Subject: perf callchain: Cache eh/debug frame offset for dwarf unwind When libunwind tries to resolve callchains it needs to know the offset of .eh_frame_hdr or .debug_frame to access the dso. Since it will always return the same result for a given DSO, just cache the result as an optimization. Signed-off-by: Namhyung Kim Cc: Adrian Hunter Cc: Andi Kleen Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1422518843-25818-41-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/dso.h | 1 + tools/perf/util/unwind-libunwind.c | 31 ++++++++++++++++++++----------- 2 files changed, 21 insertions(+), 11 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h index 3782c82c6e44..ced92841ff97 100644 --- a/tools/perf/util/dso.h +++ b/tools/perf/util/dso.h @@ -139,6 +139,7 @@ struct dso { u32 status_seen; size_t file_size; struct list_head open_entry; + u64 frame_offset; } data; union { /* Tool specific area */ diff --git a/tools/perf/util/unwind-libunwind.c b/tools/perf/util/unwind-libunwind.c index 6edf535f65c2..e3c40a520a25 100644 --- a/tools/perf/util/unwind-libunwind.c +++ b/tools/perf/util/unwind-libunwind.c @@ -266,14 +266,17 @@ static int read_unwind_spec_eh_frame(struct dso *dso, struct machine *machine, u64 *fde_count) { int ret = -EINVAL, fd; - u64 offset; + u64 offset = dso->data.frame_offset; - fd = dso__data_fd(dso, machine); - if (fd < 0) - return -EINVAL; + if (offset == 0) { + fd = dso__data_fd(dso, machine); + if (fd < 0) + return -EINVAL; - /* Check the .eh_frame section for unwinding info */ - offset = elf_section_offset(fd, ".eh_frame_hdr"); + /* Check the .eh_frame section for unwinding info */ + offset = elf_section_offset(fd, ".eh_frame_hdr"); + dso->data.frame_offset = offset; + } if (offset) ret = unwind_spec_ehframe(dso, machine, offset, @@ -287,14 +290,20 @@ static int read_unwind_spec_eh_frame(struct dso *dso, struct machine *machine, static int read_unwind_spec_debug_frame(struct dso *dso, struct machine *machine, u64 *offset) { - int fd = dso__data_fd(dso, machine); + int fd; + u64 ofs = dso->data.frame_offset; - if (fd < 0) - return -EINVAL; + if (ofs == 0) { + fd = dso__data_fd(dso, machine); + if (fd < 0) + return -EINVAL; - /* Check the .debug_frame section for unwinding info */ - *offset = elf_section_offset(fd, ".debug_frame"); + /* Check the .debug_frame section for unwinding info */ + ofs = elf_section_offset(fd, ".debug_frame"); + dso->data.frame_offset = ofs; + } + *offset = ofs; if (*offset) return 0; -- cgit v1.2.3 From 4ac30cf74b308fb01338e660d3471cd490a7958a Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 29 Jan 2015 17:06:43 +0900 Subject: perf tools: Do not use __perf_session__process_events() directly It's only used for perf record to process build-id because its file size it's not fixed at this time due to remaining header features. However data offset and size is available so that we can use the perf_session__process_events() once we set the file size as the current offset like for now. Signed-off-by: Namhyung Kim Cc: Adrian Hunter Cc: Andi Kleen Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1422518843-25818-3-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-record.c | 7 +++---- tools/perf/util/session.c | 6 +++--- tools/perf/util/session.h | 3 --- 3 files changed, 6 insertions(+), 10 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 8648c6d3003d..1134de22979e 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -194,12 +194,13 @@ static int process_buildids(struct record *rec) { struct perf_data_file *file = &rec->file; struct perf_session *session = rec->session; - u64 start = session->header.data_offset; u64 size = lseek(file->fd, 0, SEEK_CUR); if (size == 0) return 0; + file->size = size; + /* * During this process, it'll load kernel map and replace the * dso->long_name to a real pathname it found. In this case @@ -211,9 +212,7 @@ static int process_buildids(struct record *rec) */ symbol_conf.ignore_vmlinux_buildid = true; - return __perf_session__process_events(session, start, - size - start, - size, &build_id__mark_dso_hit_ops); + return perf_session__process_events(session, &build_id__mark_dso_hit_ops); } static void perf_event__synthesize_guest_os(struct machine *machine, void *data) diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index b0ce3d6e6231..0baf75f12b7c 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -1251,9 +1251,9 @@ fetch_mmaped_event(struct perf_session *session, #define NUM_MMAPS 128 #endif -int __perf_session__process_events(struct perf_session *session, - u64 data_offset, u64 data_size, - u64 file_size, struct perf_tool *tool) +static int __perf_session__process_events(struct perf_session *session, + u64 data_offset, u64 data_size, + u64 file_size, struct perf_tool *tool) { int fd = perf_data_file__fd(session->file); u64 head, page_offset, file_offset, file_pos, size; diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index dc26ebf60fe4..6d663dc76404 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -49,9 +49,6 @@ int perf_session__peek_event(struct perf_session *session, off_t file_offset, union perf_event **event_ptr, struct perf_sample *sample); -int __perf_session__process_events(struct perf_session *session, - u64 data_offset, u64 data_size, u64 size, - struct perf_tool *tool); int perf_session__process_events(struct perf_session *session, struct perf_tool *tool); -- cgit v1.2.3 From e3d5911221f5cf71e1f0306256d4e42d34a365d2 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 29 Jan 2015 17:06:44 +0900 Subject: perf record: Show precise number of samples After perf record finishes, it prints file size and number of samples in the file but this info is wrong since it assumes typical sample size of 24 bytes and divides file size by the value. However as we post-process recorded samples for build-id, it can show correct number like below. If build-id post-processing is not requested just omit the wrong number of samples. $ perf record noploop 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.159 MB perf.data (3989 samples) ] $ perf report --stdio -n # To display the perf.data header info, please use --header/--header-only options. # # Samples: 3K of event 'cycles' # Event count (approx.): 3771330663 # # Overhead Samples Command Shared Object Symbol # ........ ............ ....... ................ .......................... # 99.90% 3982 noploop noploop [.] main 0.09% 1 noploop ld-2.17.so [.] _dl_check_map_versions 0.01% 1 noploop [kernel.vmlinux] [k] setup_arg_pages 0.00% 5 noploop [kernel.vmlinux] [k] intel_pmu_enable_all Reported-by: Milian Wolff Signed-off-by: Namhyung Kim Reviewed-by: Jiri Olsa Cc: Adrian Hunter Cc: Andi Kleen Cc: David Ahern Cc: Frederic Weisbecker Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1422518843-25818-4-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-record.c | 51 ++++++++++++++++++++++++++++++++++----------- 1 file changed, 39 insertions(+), 12 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 1134de22979e..9900b433e861 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -190,6 +190,19 @@ out: return rc; } +static int process_sample_event(struct perf_tool *tool, + union perf_event *event, + struct perf_sample *sample, + struct perf_evsel *evsel, + struct machine *machine) +{ + struct record *rec = container_of(tool, struct record, tool); + + rec->samples++; + + return build_id__mark_dso_hit(tool, event, sample, evsel, machine); +} + static int process_buildids(struct record *rec) { struct perf_data_file *file = &rec->file; @@ -212,7 +225,7 @@ static int process_buildids(struct record *rec) */ symbol_conf.ignore_vmlinux_buildid = true; - return perf_session__process_events(session, &build_id__mark_dso_hit_ops); + return perf_session__process_events(session, &rec->tool); } static void perf_event__synthesize_guest_os(struct machine *machine, void *data) @@ -503,19 +516,9 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) goto out_child; } - if (!quiet) { + if (!quiet) fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking); - /* - * Approximate RIP event size: 24 bytes. - */ - fprintf(stderr, - "[ perf record: Captured and wrote %.3f MB %s (~%" PRIu64 " samples) ]\n", - (double)rec->bytes_written / 1024.0 / 1024.0, - file->path, - rec->bytes_written / 24); - } - out_child: if (forks) { int exit_status; @@ -534,6 +537,9 @@ out_child: } else status = err; + /* this will be recalculated during process_buildids() */ + rec->samples = 0; + if (!err && !file->is_pipe) { rec->session->header.data_size += rec->bytes_written; @@ -543,6 +549,20 @@ out_child: file->fd, true); } + if (!err && !quiet) { + char samples[128]; + + if (rec->samples) + scnprintf(samples, sizeof(samples), + " (%" PRIu64 " samples)", rec->samples); + else + samples[0] = '\0'; + + fprintf(stderr, "[ perf record: Captured and wrote %.3f MB %s%s ]\n", + perf_data_file__size(file) / 1024.0 / 1024.0, + file->path, samples); + } + out_delete_session: perf_session__delete(session); return status; @@ -719,6 +739,13 @@ static struct record record = { .default_per_cpu = true, }, }, + .tool = { + .sample = process_sample_event, + .fork = perf_event__process_fork, + .comm = perf_event__process_comm, + .mmap = perf_event__process_mmap, + .mmap2 = perf_event__process_mmap2, + }, }; #define CALLCHAIN_HELP "setup and enables call-graph (stack chain/backtrace) recording: " -- cgit v1.2.3 From f7913971bdad1a72c6158074786babed477d61e2 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 29 Jan 2015 17:06:45 +0900 Subject: perf header: Set header version correctly When check_magic_endian() is called, it checks the magic number in the perf data file to determine version and endianness. But if it uses a same endian the verison number wasn't updated and makes confusion. Signed-off-by: Namhyung Kim Cc: Adrian Hunter Cc: Andi Kleen Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1422518843-25818-5-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/header.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index b20e40c74468..1f407f7352a7 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -2237,6 +2237,7 @@ static int check_magic_endian(u64 magic, uint64_t hdr_sz, * - unique number to identify actual perf.data files * - encode endianness of file */ + ph->version = PERF_HEADER_VERSION_2; /* check magic number with one endianness */ if (magic == __perf_magic2) @@ -2247,7 +2248,6 @@ static int check_magic_endian(u64 magic, uint64_t hdr_sz, return -1; ph->needs_swap = true; - ph->version = PERF_HEADER_VERSION_2; return 0; } -- cgit v1.2.3 From 62e503b7ed98fcdf16308cda0b5378e7840f4339 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 29 Jan 2015 17:06:46 +0900 Subject: perf evsel: Set attr.task bit for a tracking event The perf_event_attr.task bit is to track task (fork and exit) events but it missed to be set by perf_evsel__config(). While it was not a problem in practice since setting other bits (comm/mmap) ended up being in same result, it'd be good to set it explicitly anyway. The attr->task is to track task related events (fork/exit) only but other meta events like comm and mmap[2] also needs the task events. So setting attr->comm and/or attr->mmap causes the kernel emits the task events anyway. So the attr->task is only meaningful when other bits are off but I'd like to set it for completeness. Signed-off-by: Namhyung Kim Cc: Adrian Hunter Cc: Andi Kleen Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1422518843-25818-6-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/evsel.c | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 1d826d63bc20..ea51a90e20a0 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -709,6 +709,7 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts) if (opts->sample_weight) perf_evsel__set_sample_bit(evsel, WEIGHT); + attr->task = track; attr->mmap = track; attr->mmap2 = track && !perf_missing_features.mmap2; attr->comm = track; -- cgit v1.2.3 From 0b064f43001fc2627ff8c3020647b85db040235f Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 29 Jan 2015 17:06:42 +0900 Subject: perf symbols: Support to read compressed module from build-id cache The commit c00c48fc6e6e ("perf symbols: Preparation for compressed kernel module support") added support for compressed kernel modules but it only supports system path DSOs. When a dso is read from build-id cache, its filename doesn't end with ".gz" but has build-id. In this case, we should fallback to the original dso->name. Signed-off-by: Namhyung Kim Cc: Adrian Hunter Cc: Andi Kleen Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1422518843-25818-2-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/symbol-elf.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index 06fcd1bf98b6..b24f9d8727a8 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -574,13 +574,16 @@ static int decompress_kmodule(struct dso *dso, const char *name, const char *ext = strrchr(name, '.'); char tmpbuf[] = "/tmp/perf-kmod-XXXXXX"; - if ((type != DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP && - type != DSO_BINARY_TYPE__GUEST_KMODULE_COMP) || - type != dso->symtab_type) + if (type != DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP && + type != DSO_BINARY_TYPE__GUEST_KMODULE_COMP && + type != DSO_BINARY_TYPE__BUILD_ID_CACHE) return -1; - if (!ext || !is_supported_compression(ext + 1)) - return -1; + if (!ext || !is_supported_compression(ext + 1)) { + ext = strrchr(dso->name, '.'); + if (!ext || !is_supported_compression(ext + 1)) + return -1; + } fd = mkstemp(tmpbuf); if (fd < 0) -- cgit v1.2.3 From 42aa276f40730211383e9a9923416f1fb9841d68 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 29 Jan 2015 17:06:48 +0900 Subject: perf tools: Use perf_data_file__fd() consistently Do not reference file->fd directly since we want hide the implementation details from outside for possible future changes. Signed-off-by: Namhyung Kim Cc: Adrian Hunter Cc: Andi Kleen Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1422518843-25818-8-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-inject.c | 5 +++-- tools/perf/builtin-record.c | 14 +++++++------- 2 files changed, 10 insertions(+), 9 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c index 84df2deed988..a13641e066f5 100644 --- a/tools/perf/builtin-inject.c +++ b/tools/perf/builtin-inject.c @@ -343,6 +343,7 @@ static int __cmd_inject(struct perf_inject *inject) int ret = -EINVAL; struct perf_session *session = inject->session; struct perf_data_file *file_out = &inject->output; + int fd = perf_data_file__fd(file_out); signal(SIGINT, sig_handler); @@ -376,7 +377,7 @@ static int __cmd_inject(struct perf_inject *inject) } if (!file_out->is_pipe) - lseek(file_out->fd, session->header.data_offset, SEEK_SET); + lseek(fd, session->header.data_offset, SEEK_SET); ret = perf_session__process_events(session, &inject->tool); @@ -385,7 +386,7 @@ static int __cmd_inject(struct perf_inject *inject) perf_header__set_feat(&session->header, HEADER_BUILD_ID); session->header.data_size = inject->bytes_written; - perf_session__write_header(session, session->evlist, file_out->fd, true); + perf_session__write_header(session, session->evlist, fd, true); } return ret; diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 9900b433e861..404ab3434052 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -208,7 +208,7 @@ static int process_buildids(struct record *rec) struct perf_data_file *file = &rec->file; struct perf_session *session = rec->session; - u64 size = lseek(file->fd, 0, SEEK_CUR); + u64 size = lseek(perf_data_file__fd(file), 0, SEEK_CUR); if (size == 0) return 0; @@ -334,6 +334,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) struct perf_data_file *file = &rec->file; struct perf_session *session; bool disabled = false, draining = false; + int fd; rec->progname = argv[0]; @@ -348,6 +349,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) return -1; } + fd = perf_data_file__fd(file); rec->session = session; record__init_features(rec); @@ -372,12 +374,11 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) perf_header__clear_feat(&session->header, HEADER_GROUP_DESC); if (file->is_pipe) { - err = perf_header__write_pipe(file->fd); + err = perf_header__write_pipe(fd); if (err < 0) goto out_child; } else { - err = perf_session__write_header(session, rec->evlist, - file->fd, false); + err = perf_session__write_header(session, rec->evlist, fd, false); if (err < 0) goto out_child; } @@ -409,7 +410,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) * return this more properly and also * propagate errors that now are calling die() */ - err = perf_event__synthesize_tracing_data(tool, file->fd, rec->evlist, + err = perf_event__synthesize_tracing_data(tool, fd, rec->evlist, process_synthesized_event); if (err <= 0) { pr_err("Couldn't record tracing data.\n"); @@ -545,8 +546,7 @@ out_child: if (!rec->no_buildid) process_buildids(rec); - perf_session__write_header(rec->session, rec->evlist, - file->fd, true); + perf_session__write_header(rec->session, rec->evlist, fd, true); } if (!err && !quiet) { -- cgit v1.2.3 From c52686f9f888d23ca72f1309e86af8e91d075697 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 29 Jan 2015 17:02:01 -0300 Subject: perf symbols: Convert lseek + read to pread When dso_cache__read() is called, it reads data from the given offset using lseek + normal read syscall. It can be combined to a single pread syscall. Signed-off-by: Namhyung Kim Cc: Adrian Hunter Cc: Andi Kleen Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1422518843-25818-40-git-send-email-namhyung@kernel.org [ Fixed it up when cherry picking it from the multi threaded patchkit ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/dso.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index 45be944d450a..c2f7d3b90966 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -532,12 +532,8 @@ dso_cache__read(struct dso *dso, u64 offset, u8 *data, ssize_t size) break; cache_offset = offset & DSO__DATA_CACHE_MASK; - ret = -EINVAL; - if (-1 == lseek(dso->data.fd, cache_offset, SEEK_SET)) - break; - - ret = read(dso->data.fd, cache->data, DSO__DATA_CACHE_SIZE); + ret = pread(dso->data.fd, cache->data, DSO__DATA_CACHE_SIZE, cache_offset); if (ret <= 0) break; -- cgit v1.2.3 From 5c1de006e8e66b0be05be422416629e344c71652 Mon Sep 17 00:00:00 2001 From: "sriram@marirs.net.in" Date: Mon, 22 Dec 2014 22:17:37 +0530 Subject: cpupower Makefile change to help run the tool without 'make install' The cpupower tool, when compiled against libcpupower.so fail's to run as the linker file path's are missing during compilation. So added changes in the Makefile to run cpupower tool, which helps us run the tool without doing a 'make install'. Signed-off-by: Sriram Raghunathan Acked-by: Thomas Renninger Signed-off-by: Rafael J. Wysocki --- tools/power/cpupower/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/power/cpupower/Makefile b/tools/power/cpupower/Makefile index 2e2ba2efa0d9..3ed7c0476d48 100644 --- a/tools/power/cpupower/Makefile +++ b/tools/power/cpupower/Makefile @@ -209,7 +209,7 @@ $(OUTPUT)%.o: %.c $(OUTPUT)cpupower: $(UTIL_OBJS) $(OUTPUT)libcpupower.so.$(LIB_MAJ) $(ECHO) " CC " $@ - $(QUIET) $(CC) $(CFLAGS) $(LDFLAGS) $(UTIL_OBJS) -lcpupower -lrt -lpci -L$(OUTPUT) -o $@ + $(QUIET) $(CC) $(CFLAGS) $(LDFLAGS) $(UTIL_OBJS) -lcpupower -Wl,-rpath=./ -lrt -lpci -L$(OUTPUT) -o $@ $(QUIET) $(STRIPCMD) $@ $(OUTPUT)po/$(PACKAGE).pot: $(UTIL_SRC) -- cgit v1.2.3 From 9f2cdcbbb90e70e5e8fe6cd30151b8ac1c8745ac Mon Sep 17 00:00:00 2001 From: Josh Poimboeuf Date: Wed, 28 Jan 2015 13:38:38 -0600 Subject: ktest: Give console process a dedicated tty Create a pseudoterminal (pty pair) to give the console a dedicated tty so it doesn't mess with ktest's terminal settings. Link: http://lkml.kernel.org/r/37b0127f9efad09ff4fc994334db998141e4f6ca.1422473610.git.jpoimboe@redhat.com Signed-off-by: Josh Poimboeuf Signed-off-by: Steven Rostedt --- tools/testing/ktest/ktest.pl | 66 ++++++++++++++++++++++++++++++++++++++------ 1 file changed, 57 insertions(+), 9 deletions(-) (limited to 'tools') diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl index 6ae890a0d486..2d3191693567 100755 --- a/tools/testing/ktest/ktest.pl +++ b/tools/testing/ktest/ktest.pl @@ -1410,23 +1410,71 @@ sub dodie { die @_, "\n"; } -sub open_console { - my ($fp) = @_; +sub create_pty { + my ($ptm, $pts) = @_; + my $tmp; + my $TIOCSPTLCK = 0x40045431; + my $TIOCGPTN = 0x80045430; + + sysopen($ptm, "/dev/ptmx", O_RDWR | O_NONBLOCK) or + dodie "Cant open /dev/ptmx"; + + # unlockpt() + $tmp = pack("i", 0); + ioctl($ptm, $TIOCSPTLCK, $tmp) or + dodie "ioctl TIOCSPTLCK for /dev/ptmx failed"; + + # ptsname() + ioctl($ptm, $TIOCGPTN, $tmp) or + dodie "ioctl TIOCGPTN for /dev/ptmx failed"; + $tmp = unpack("i", $tmp); + + sysopen($pts, "/dev/pts/$tmp", O_RDWR | O_NONBLOCK) or + dodie "Can't open /dev/pts/$tmp"; +} + +sub exec_console { + my ($ptm, $pts) = @_; + + close($ptm); + + close(\*STDIN); + close(\*STDOUT); + close(\*STDERR); - my $flags; + open(\*STDIN, '<&', $pts); + open(\*STDOUT, '>&', $pts); + open(\*STDERR, '>&', $pts); + + close($pts); + + exec $console or + dodie "Can't open console $console"; +} + +sub open_console { + my ($ptm) = @_; + my $pts = \*PTSFD; + my $pid; # save terminal settings $stty = `stty -g`; - my $pid = open($fp, "$console|") or - dodie "Can't open console $console"; + create_pty($ptm, $pts); - $flags = fcntl($fp, F_GETFL, 0) or - dodie "Can't get flags for the socket: $!"; - $flags = fcntl($fp, F_SETFL, $flags | O_NONBLOCK) or - dodie "Can't set flags for the socket: $!"; + $pid = fork; + + if (!$pid) { + # child + exec_console($ptm, $pts) + } + + # parent + close($pts); return $pid; + + open(PTSFD, "Stop perl from warning about single use of PTSFD"); } sub close_console { -- cgit v1.2.3 From 9d2f7f051b8917305ea20ed79ff08254ea73f26d Mon Sep 17 00:00:00 2001 From: Josh Poimboeuf Date: Wed, 28 Jan 2015 13:38:39 -0600 Subject: ktest: Enable user input to the console Allow the user to send input to the console by putting the terminal in cbreak mode (to allow reading stdin one character at a time) and copying all stdin data to the console's pty. Link: http://lkml.kernel.org/r/bb1bbe7d202c95a3ce7894cfffdd8c725875978e.1422473610.git.jpoimboe@redhat.com Signed-off-by: Josh Poimboeuf Signed-off-by: Steven Rostedt --- tools/testing/ktest/ktest.pl | 51 +++++++++++++++++++++++++++++++------------- 1 file changed, 36 insertions(+), 15 deletions(-) (limited to 'tools') diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl index 2d3191693567..ef1d99f3859c 100755 --- a/tools/testing/ktest/ktest.pl +++ b/tools/testing/ktest/ktest.pl @@ -178,7 +178,7 @@ my $checkout; my $localversion; my $iteration = 0; my $successes = 0; -my $stty; +my $stty_orig; my $bisect_good; my $bisect_bad; @@ -1458,7 +1458,11 @@ sub open_console { my $pid; # save terminal settings - $stty = `stty -g`; + $stty_orig = `stty -g`; + + # place terminal in cbreak mode so that stdin can be read one character at + # a time without having to wait for a newline + system("stty -icanon -echo -icrnl"); create_pty($ptm, $pts); @@ -1487,7 +1491,7 @@ sub close_console { close($fp); # restore terminal settings - system("stty $stty"); + system("stty $stty_orig"); } sub start_monitor { @@ -1827,7 +1831,9 @@ sub wait_for_input { my ($fp, $time) = @_; my $rin; - my $ready; + my $rout; + my $nr; + my $buf; my $line; my $ch; @@ -1837,21 +1843,36 @@ sub wait_for_input $rin = ''; vec($rin, fileno($fp), 1) = 1; - ($ready, $time) = select($rin, undef, undef, $time); + vec($rin, fileno(\*STDIN), 1) = 1; - $line = ""; + while (1) { + $nr = select($rout=$rin, undef, undef, $time); - # try to read one char at a time - while (sysread $fp, $ch, 1) { - $line .= $ch; - last if ($ch eq "\n"); - } + if ($nr <= 0) { + return undef; + } - if (!length($line)) { - return undef; - } + # copy data from stdin to the console + if (vec($rout, fileno(\*STDIN), 1) == 1) { + sysread(\*STDIN, $buf, 1000); + syswrite($fp, $buf, 1000); + next; + } - return $line; + $line = ""; + + # try to read one char at a time + while (sysread $fp, $ch, 1) { + $line .= $ch; + last if ($ch eq "\n"); + } + + if (!length($line)) { + return undef; + } + + return $line; + } } sub reboot_to { -- cgit v1.2.3 From 4bf6e1fc992a19e3a1ce7798df969817467c4360 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Thu, 29 Jan 2015 10:06:07 -0500 Subject: ktest: Print build,install,boot,test times at success and failure Since both success and failure may shortcut and exit ktest, it is better to print the status times there too. Once times are printed, the values for the times are reset, so they will not print more than once. Signed-off-by: Steven Rostedt --- tools/testing/ktest/ktest.pl | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'tools') diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl index ef1d99f3859c..ca20ce2dc8b6 100755 --- a/tools/testing/ktest/ktest.pl +++ b/tools/testing/ktest/ktest.pl @@ -1643,6 +1643,8 @@ sub fail { $name = " ($test_name)"; } + print_times; + doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n"; doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n"; doprint "KTEST RESULT: TEST $i$name Failed: ", @_, "\n"; @@ -2494,6 +2496,8 @@ sub success { $name = " ($test_name)"; } + print_times; + doprint "\n\n*******************************************\n"; doprint "*******************************************\n"; doprint "KTEST RESULT: TEST $i$name SUCCESS!!!! **\n"; -- cgit v1.2.3 From 1cb9e64298e9af6b6a8962d43abefdf0b8a635f9 Mon Sep 17 00:00:00 2001 From: Josh Poimboeuf Date: Thu, 29 Jan 2015 20:54:53 -0600 Subject: ktest: Cleanup terminal on dodie() failure If dodie() is called with the console open, restore the terminal's original settings before dying. Link: http://lkml.kernel.org/r/20150130025453.GB20952@treble.redhat.com Signed-off-by: Josh Poimboeuf Signed-off-by: Steven Rostedt --- tools/testing/ktest/ktest.pl | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl index ca20ce2dc8b6..840803b3cd41 100755 --- a/tools/testing/ktest/ktest.pl +++ b/tools/testing/ktest/ktest.pl @@ -1407,6 +1407,11 @@ sub dodie { print " See $opt{LOG_FILE} for more info.\n"; } + if ($monitor_cnt) { + # restore terminal settings + system("stty $stty_orig"); + } + die @_, "\n"; } @@ -1449,7 +1454,7 @@ sub exec_console { close($pts); exec $console or - dodie "Can't open console $console"; + die "Can't open console $console"; } sub open_console { -- cgit v1.2.3 From 7c2c49eceb79eb4738f38a00270830057b5bfb76 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Tue, 3 Feb 2015 15:45:13 -0500 Subject: ktest: Place quotes around item variable Seems that some of the new console logic causes doprint to possibly get evaluated. When printing a commit message that contains parenthesis, it fails with a shell parsing error. This gets fixed when we add quotes around the $item variable, and prevent it from being evaluated by any shell commands. Signed-off-by: Steven Rostedt --- tools/testing/ktest/ktest.pl | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl index 840803b3cd41..d08e214ec6e7 100755 --- a/tools/testing/ktest/ktest.pl +++ b/tools/testing/ktest/ktest.pl @@ -3447,7 +3447,7 @@ sub patchcheck { my $sha1 = $item; $sha1 =~ s/^([[:xdigit:]]+).*/$1/; - doprint "\nProcessing commit $item\n\n"; + doprint "\nProcessing commit \"$item\"\n\n"; run_command "git checkout $sha1" or die "Failed to checkout $sha1"; -- cgit v1.2.3 From 82a809419429f2e6142d2c5d88d91661f8aecb87 Mon Sep 17 00:00:00 2001 From: "David E. Box" Date: Thu, 5 Feb 2015 15:20:45 +0800 Subject: ACPICA: Update Copyright headers to 2015 ACPICA commit 8990e73ab2aa15d6a0068b860ab54feff25bee36 Link: https://github.com/acpica/acpica/commit/8990e73a Signed-off-by: David E. Box Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- tools/power/acpi/common/cmfsize.c | 2 +- tools/power/acpi/common/getopt.c | 2 +- tools/power/acpi/os_specific/service_layers/oslibcfs.c | 2 +- tools/power/acpi/os_specific/service_layers/oslinuxtbl.c | 2 +- tools/power/acpi/os_specific/service_layers/osunixdir.c | 2 +- tools/power/acpi/os_specific/service_layers/osunixmap.c | 2 +- tools/power/acpi/os_specific/service_layers/osunixxf.c | 2 +- tools/power/acpi/tools/acpidump/acpidump.h | 2 +- tools/power/acpi/tools/acpidump/apdump.c | 2 +- tools/power/acpi/tools/acpidump/apfiles.c | 2 +- tools/power/acpi/tools/acpidump/apmain.c | 2 +- 11 files changed, 11 insertions(+), 11 deletions(-) (limited to 'tools') diff --git a/tools/power/acpi/common/cmfsize.c b/tools/power/acpi/common/cmfsize.c index f4b953354ff7..eec688041500 100644 --- a/tools/power/acpi/common/cmfsize.c +++ b/tools/power/acpi/common/cmfsize.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/tools/power/acpi/common/getopt.c b/tools/power/acpi/common/getopt.c index 2f0f34a36db4..5da129e10aa2 100644 --- a/tools/power/acpi/common/getopt.c +++ b/tools/power/acpi/common/getopt.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/tools/power/acpi/os_specific/service_layers/oslibcfs.c b/tools/power/acpi/os_specific/service_layers/oslibcfs.c index c13ff9c51d74..b51e40a9a120 100644 --- a/tools/power/acpi/os_specific/service_layers/oslibcfs.c +++ b/tools/power/acpi/os_specific/service_layers/oslibcfs.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/tools/power/acpi/os_specific/service_layers/oslinuxtbl.c b/tools/power/acpi/os_specific/service_layers/oslinuxtbl.c index 0dc2485dedf5..92f1fd700344 100644 --- a/tools/power/acpi/os_specific/service_layers/oslinuxtbl.c +++ b/tools/power/acpi/os_specific/service_layers/oslinuxtbl.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/tools/power/acpi/os_specific/service_layers/osunixdir.c b/tools/power/acpi/os_specific/service_layers/osunixdir.c index 733f9e490fc4..e153fcb12b1a 100644 --- a/tools/power/acpi/os_specific/service_layers/osunixdir.c +++ b/tools/power/acpi/os_specific/service_layers/osunixdir.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/tools/power/acpi/os_specific/service_layers/osunixmap.c b/tools/power/acpi/os_specific/service_layers/osunixmap.c index 99b47b6194a3..3853a7350440 100644 --- a/tools/power/acpi/os_specific/service_layers/osunixmap.c +++ b/tools/power/acpi/os_specific/service_layers/osunixmap.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/tools/power/acpi/os_specific/service_layers/osunixxf.c b/tools/power/acpi/os_specific/service_layers/osunixxf.c index 7ccb073f8316..6858c0893c91 100644 --- a/tools/power/acpi/os_specific/service_layers/osunixxf.c +++ b/tools/power/acpi/os_specific/service_layers/osunixxf.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/tools/power/acpi/tools/acpidump/acpidump.h b/tools/power/acpi/tools/acpidump/acpidump.h index a2d37d610639..84bdef0136cb 100644 --- a/tools/power/acpi/tools/acpidump/acpidump.h +++ b/tools/power/acpi/tools/acpidump/acpidump.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/tools/power/acpi/tools/acpidump/apdump.c b/tools/power/acpi/tools/acpidump/apdump.c index 24d32968802d..c736adf5fb55 100644 --- a/tools/power/acpi/tools/acpidump/apdump.c +++ b/tools/power/acpi/tools/acpidump/apdump.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/tools/power/acpi/tools/acpidump/apfiles.c b/tools/power/acpi/tools/acpidump/apfiles.c index d470046a6d81..8f2fe168228e 100644 --- a/tools/power/acpi/tools/acpidump/apfiles.c +++ b/tools/power/acpi/tools/acpidump/apfiles.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/tools/power/acpi/tools/acpidump/apmain.c b/tools/power/acpi/tools/acpidump/apmain.c index 853b4da22c3e..d0ba6535f5af 100644 --- a/tools/power/acpi/tools/acpidump/apmain.c +++ b/tools/power/acpi/tools/acpidump/apmain.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without -- cgit v1.2.3 From 98481e79b60a50d699b79292ff1b7e56e7fa8425 Mon Sep 17 00:00:00 2001 From: Len Brown Date: Fri, 15 Aug 2014 00:36:50 -0400 Subject: tools/power turbostat: relax dependency on root permission For turbostat to run as non-root, it needs to permissions: 1. read access to /dev/cpu/*/msr via standard user/group/world file permissions 2. CAP_SYS_RAWIO eg. # setcap cap_sys_rawio=ep turbostat Yes, running as root still works. Signed-off-by: Len Brown --- tools/power/x86/turbostat/turbostat.c | 53 +++++++++++++++++++++++++++-------- 1 file changed, 41 insertions(+), 12 deletions(-) (limited to 'tools') diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c index 5b1b807265a1..6f29fc11fde6 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -38,6 +38,8 @@ #include #include #include +#include +#include char *proc_stat = "/proc/stat"; unsigned int interval_sec = 5; /* set with -i interval_sec */ @@ -251,15 +253,13 @@ int get_msr(int cpu, off_t offset, unsigned long long *msr) sprintf(pathname, "/dev/cpu/%d/msr", cpu); fd = open(pathname, O_RDONLY); if (fd < 0) - return -1; + err(-1, "%s open failed, try chown or chmod +r /dev/cpu/*/msr, or run as root", pathname); retval = pread(fd, msr, sizeof *msr, offset); close(fd); - if (retval != sizeof *msr) { - fprintf(stderr, "%s offset 0x%llx read failed\n", pathname, (unsigned long long)offset); - return -1; - } + if (retval != sizeof *msr) + err(-1, "%s offset 0x%llx read failed", pathname, (unsigned long long)offset); return 0; } @@ -1462,10 +1462,40 @@ void check_dev_msr() "Try \"# modprobe msr\""); } -void check_super_user() +void check_permissions() { - if (getuid() != 0) - errx(-6, "must be root"); + struct __user_cap_header_struct cap_header_data; + cap_user_header_t cap_header = &cap_header_data; + struct __user_cap_data_struct cap_data_data; + cap_user_data_t cap_data = &cap_data_data; + extern int capget(cap_user_header_t hdrp, cap_user_data_t datap); + int do_exit = 0; + + /* check for CAP_SYS_RAWIO */ + cap_header->pid = getpid(); + cap_header->version = _LINUX_CAPABILITY_VERSION; + if (capget(cap_header, cap_data) < 0) + err(-6, "capget(2) failed"); + + if ((cap_data->effective & (1 << CAP_SYS_RAWIO)) == 0) { + do_exit++; + warnx("capget(CAP_SYS_RAWIO) failed," + " try \"# setcap cap_sys_rawio=ep %s\"", progname); + } + + /* test file permissions */ + if (euidaccess("/dev/cpu/0/msr", R_OK)) { + do_exit++; + warn("/dev/cpu/0/msr open failed, try chown or chmod +r /dev/cpu/*/msr"); + } + + /* if all else fails, thell them to be root */ + if (do_exit) + if (getuid() != 0) + warnx("Or simply run as root"); + + if (do_exit) + exit(-6); } int has_nehalem_turbo_ratio_limit(unsigned int family, unsigned int model) @@ -2299,10 +2329,9 @@ void setup_all_buffers(void) void turbostat_init() { - check_cpuid(); - check_dev_msr(); - check_super_user(); + check_permissions(); + check_cpuid(); setup_all_buffers(); @@ -2441,7 +2470,7 @@ int main(int argc, char **argv) cmdline(argc, argv); if (verbose) - fprintf(stderr, "turbostat v3.7 Feb 6, 2014" + fprintf(stderr, "turbostat v3.8 14-Aug 2014" " - Len Brown \n"); turbostat_init(); -- cgit v1.2.3 From 3a9a941d0b9361eac81fb763a89fb465f70b1c28 Mon Sep 17 00:00:00 2001 From: Len Brown Date: Fri, 15 Aug 2014 02:39:52 -0400 Subject: tools/power turbostat: decode MSR_*_PERF_LIMIT_REASONS The Processor generation code-named Haswell added MSR_{CORE | GFX | RING}_PERF_LIMIT_REASONS to explain when and how the processor limits frequency. turbostat -v will now decode these bits. Each MSR has an "Active" set of bits which describe current conditions, and a "Logged" set of bits, which describe what has happened since last cleared. Turbostat currently doesn't clear the log bits. Signed-off-by: Len Brown --- tools/power/x86/turbostat/turbostat.c | 126 ++++++++++++++++++++++++++++++++++ 1 file changed, 126 insertions(+) (limited to 'tools') diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c index 6f29fc11fde6..58913096d7b2 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -83,6 +83,9 @@ unsigned int tcc_activation_temp; unsigned int tcc_activation_temp_override; double rapl_power_units, rapl_energy_units, rapl_time_units; double rapl_joule_counter_range; +unsigned int do_core_perf_limit_reasons; +unsigned int do_gfx_perf_limit_reasons; +unsigned int do_ring_perf_limit_reasons; #define RAPL_PKG (1 << 0) /* 0x610 MSR_PKG_POWER_LIMIT */ @@ -1178,6 +1181,7 @@ print_nhm_turbo_ratio_limits: if (ratio) fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 1 active cores\n", ratio, bclk, ratio * bclk); + } void free_all_buffers(void) @@ -1594,6 +1598,103 @@ int print_epb(struct thread_data *t, struct core_data *c, struct pkg_data *p) return 0; } +/* + * print_perf_limit() + */ +int print_perf_limit(struct thread_data *t, struct core_data *c, struct pkg_data *p) +{ + unsigned long long msr; + int cpu; + + cpu = t->cpu_id; + + /* per-package */ + if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE) || !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)) + return 0; + + if (cpu_migrate(cpu)) { + fprintf(stderr, "Could not migrate to CPU %d\n", cpu); + return -1; + } + + if (do_core_perf_limit_reasons) { + get_msr(cpu, MSR_CORE_PERF_LIMIT_REASONS, &msr); + fprintf(stderr, "cpu%d: MSR_CORE_PERF_LIMIT_REASONS, 0x%08llx", cpu, msr); + fprintf(stderr, " (Active: %s%s%s%s%s%s%s%s%s%s%s%s%s%s)", + (msr & 1 << 0) ? "PROCHOT, " : "", + (msr & 1 << 1) ? "ThermStatus, " : "", + (msr & 1 << 2) ? "bit2, " : "", + (msr & 1 << 4) ? "Graphics, " : "", + (msr & 1 << 5) ? "Auto-HWP, " : "", + (msr & 1 << 6) ? "VR-Therm, " : "", + (msr & 1 << 8) ? "Amps, " : "", + (msr & 1 << 9) ? "CorePwr, " : "", + (msr & 1 << 10) ? "PkgPwrL1, " : "", + (msr & 1 << 11) ? "PkgPwrL2, " : "", + (msr & 1 << 12) ? "MultiCoreTurbo, " : "", + (msr & 1 << 13) ? "Transitions, " : "", + (msr & 1 << 14) ? "bit14, " : "", + (msr & 1 << 15) ? "bit15, " : ""); + fprintf(stderr, " (Logged: %s%s%s%s%s%s%s%s%s%s%s%s%s%s)\n", + (msr & 1 << 16) ? "PROCHOT, " : "", + (msr & 1 << 17) ? "ThermStatus, " : "", + (msr & 1 << 18) ? "bit18, " : "", + (msr & 1 << 20) ? "Graphics, " : "", + (msr & 1 << 21) ? "Auto-HWP, " : "", + (msr & 1 << 22) ? "VR-Therm, " : "", + (msr & 1 << 24) ? "Amps, " : "", + (msr & 1 << 25) ? "CorePwr, " : "", + (msr & 1 << 26) ? "PkgPwrL1, " : "", + (msr & 1 << 27) ? "PkgPwrL2, " : "", + (msr & 1 << 28) ? "MultiCoreTurbo, " : "", + (msr & 1 << 29) ? "Transitions, " : "", + (msr & 1 << 30) ? "bit30, " : "", + (msr & 1 << 31) ? "bit31, " : ""); + + } + if (do_gfx_perf_limit_reasons) { + get_msr(cpu, MSR_GFX_PERF_LIMIT_REASONS, &msr); + fprintf(stderr, "cpu%d: MSR_GFX_PERF_LIMIT_REASONS, 0x%08llx", cpu, msr); + fprintf(stderr, " (Active: %s%s%s%s%s%s%s%s)", + (msr & 1 << 0) ? "PROCHOT, " : "", + (msr & 1 << 1) ? "ThermStatus, " : "", + (msr & 1 << 4) ? "Graphics, " : "", + (msr & 1 << 6) ? "VR-Therm, " : "", + (msr & 1 << 8) ? "Amps, " : "", + (msr & 1 << 9) ? "GFXPwr, " : "", + (msr & 1 << 10) ? "PkgPwrL1, " : "", + (msr & 1 << 11) ? "PkgPwrL2, " : ""); + fprintf(stderr, " (Logged: %s%s%s%s%s%s%s%s)\n", + (msr & 1 << 16) ? "PROCHOT, " : "", + (msr & 1 << 17) ? "ThermStatus, " : "", + (msr & 1 << 20) ? "Graphics, " : "", + (msr & 1 << 22) ? "VR-Therm, " : "", + (msr & 1 << 24) ? "Amps, " : "", + (msr & 1 << 25) ? "GFXPwr, " : "", + (msr & 1 << 26) ? "PkgPwrL1, " : "", + (msr & 1 << 27) ? "PkgPwrL2, " : ""); + } + if (do_ring_perf_limit_reasons) { + get_msr(cpu, MSR_RING_PERF_LIMIT_REASONS, &msr); + fprintf(stderr, "cpu%d: MSR_RING_PERF_LIMIT_REASONS, 0x%08llx", cpu, msr); + fprintf(stderr, " (Active: %s%s%s%s%s%s)", + (msr & 1 << 0) ? "PROCHOT, " : "", + (msr & 1 << 1) ? "ThermStatus, " : "", + (msr & 1 << 6) ? "VR-Therm, " : "", + (msr & 1 << 8) ? "Amps, " : "", + (msr & 1 << 10) ? "PkgPwrL1, " : "", + (msr & 1 << 11) ? "PkgPwrL2, " : ""); + fprintf(stderr, " (Logged: %s%s%s%s%s%s)\n", + (msr & 1 << 16) ? "PROCHOT, " : "", + (msr & 1 << 17) ? "ThermStatus, " : "", + (msr & 1 << 22) ? "VR-Therm, " : "", + (msr & 1 << 24) ? "Amps, " : "", + (msr & 1 << 26) ? "PkgPwrL1, " : "", + (msr & 1 << 27) ? "PkgPwrL2, " : ""); + } + return 0; +} + #define RAPL_POWER_GRANULARITY 0x7FFF /* 15 bit power granularity */ #define RAPL_TIME_GRANULARITY 0x3F /* 6 bit time granularity */ @@ -1683,6 +1784,27 @@ void rapl_probe(unsigned int family, unsigned int model) return; } +void perf_limit_reasons_probe(family, model) +{ + if (!genuine_intel) + return; + + if (family != 6) + return; + + switch (model) { + case 0x3C: /* HSW */ + case 0x45: /* HSW */ + case 0x46: /* HSW */ + do_gfx_perf_limit_reasons = 1; + case 0x3F: /* HSX */ + do_core_perf_limit_reasons = 1; + do_ring_perf_limit_reasons = 1; + default: + return; + } +} + int print_thermal(struct thread_data *t, struct core_data *c, struct pkg_data *p) { unsigned long long msr; @@ -2104,6 +2226,7 @@ void check_cpuid() do_nehalem_turbo_ratio_limit = has_nehalem_turbo_ratio_limit(family, model); do_ivt_turbo_ratio_limit = has_ivt_turbo_ratio_limit(family, model); rapl_probe(family, model); + perf_limit_reasons_probe(family, model); return; } @@ -2341,6 +2464,9 @@ void turbostat_init() if (verbose) for_all_cpus(print_epb, ODD_COUNTERS); + if (verbose) + for_all_cpus(print_perf_limit, ODD_COUNTERS); + if (verbose) for_all_cpus(print_rapl, ODD_COUNTERS); -- cgit v1.2.3 From d7899447535929b3672442b7b42a09ae4e48fa91 Mon Sep 17 00:00:00 2001 From: Len Brown Date: Fri, 23 Jan 2015 00:12:33 -0500 Subject: tools/power turbostat: relax dependency on invariant TSC Turbostat can be useful on systems that do not support invariant TSC, so allow it to run on those systgems. All arithmetic in turbostat using the TSC value is per-processsor, so it does not depend on the TSC values being in sync acrosss processors. Turbostat uses gettimeofday() for the measurement interval rather than using the TSC directly, so that key metric is also immune from variable TSC. Turbostat prints a TSC sanity check column: TSC_MHz = TSC_delta/interval If this column is constant and is close to the processor base frequency, then the TSC is behaving properly. The other key turbostat columns are calculated this way: Avg_Mhz = APERF_delta/interval %Busy = MPERF_delta/TSC_delta Bzy_MHz = TSC_delta/APERF_delta/MPERF_delta/interval Tested on Core2 and Core2-Xeon, and so this patch includes a few other changes to remove the assumption that target systems are Nehalem and newer. Signed-off-by: Len Brown --- tools/power/x86/turbostat/turbostat.c | 114 ++++++++++++++++++++++------------ 1 file changed, 75 insertions(+), 39 deletions(-) (limited to 'tools') diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c index 58913096d7b2..b654b641d4c3 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -61,8 +61,8 @@ unsigned int has_epb; unsigned int units = 1000000; /* MHz etc */ unsigned int genuine_intel; unsigned int has_invariant_tsc; -unsigned int do_nehalem_platform_info; -unsigned int do_nehalem_turbo_ratio_limit; +unsigned int do_nhm_platform_info; +unsigned int do_nhm_turbo_ratio_limit; unsigned int do_ivt_turbo_ratio_limit; unsigned int extra_msr_offset32; unsigned int extra_msr_offset64; @@ -284,7 +284,7 @@ void print_header(void) outp += sprintf(outp, " CPU"); if (has_aperf) outp += sprintf(outp, " Avg_MHz"); - if (do_nhm_cstates) + if (has_aperf) outp += sprintf(outp, " %%Busy"); if (has_aperf) outp += sprintf(outp, " Bzy_MHz"); @@ -340,7 +340,7 @@ void print_header(void) outp += sprintf(outp, " PKG_%%"); if (do_rapl & RAPL_DRAM_PERF_STATUS) outp += sprintf(outp, " RAM_%%"); - } else { + } else if (do_rapl && rapl_joules) { if (do_rapl & RAPL_PKG) outp += sprintf(outp, " Pkg_J"); if (do_rapl & RAPL_CORES) @@ -460,25 +460,25 @@ int format_counters(struct thread_data *t, struct core_data *c, outp += sprintf(outp, "%8d", t->cpu_id); } - /* AvgMHz */ + /* Avg_MHz */ if (has_aperf) outp += sprintf(outp, "%8.0f", 1.0 / units * t->aperf / interval_float); - /* %c0 */ - if (do_nhm_cstates) { + /* %Busy */ + if (has_aperf) { if (!skip_c0) outp += sprintf(outp, "%8.2f", 100.0 * t->mperf/t->tsc); else outp += sprintf(outp, "********"); } - /* BzyMHz */ + /* Bzy_MHz */ if (has_aperf) outp += sprintf(outp, "%8.0f", 1.0 * t->tsc / units * t->aperf / t->mperf / interval_float); - /* TSC */ + /* TSC_MHz */ outp += sprintf(outp, "%8.0f", 1.0 * t->tsc/units/interval_float); /* SMI */ @@ -564,7 +564,7 @@ int format_counters(struct thread_data *t, struct core_data *c, outp += sprintf(outp, fmt8, 100.0 * p->rapl_pkg_perf_status * rapl_time_units / interval_float); if (do_rapl & RAPL_DRAM_PERF_STATUS) outp += sprintf(outp, fmt8, 100.0 * p->rapl_dram_perf_status * rapl_time_units / interval_float); - } else { + } else if (do_rapl && rapl_joules) { if (do_rapl & RAPL_PKG) outp += sprintf(outp, fmt8, p->energy_pkg * rapl_energy_units); @@ -581,8 +581,8 @@ int format_counters(struct thread_data *t, struct core_data *c, outp += sprintf(outp, fmt8, 100.0 * p->rapl_pkg_perf_status * rapl_time_units / interval_float); if (do_rapl & RAPL_DRAM_PERF_STATUS) outp += sprintf(outp, fmt8, 100.0 * p->rapl_dram_perf_status * rapl_time_units / interval_float); - outp += sprintf(outp, fmt8, interval_float); + outp += sprintf(outp, fmt8, interval_float); } done: outp += sprintf(outp, "\n"); @@ -1022,7 +1022,7 @@ void print_verbose_header(void) unsigned long long msr; unsigned int ratio; - if (!do_nehalem_platform_info) + if (!do_nhm_platform_info) return; get_msr(0, MSR_NHM_PLATFORM_INFO, &msr); @@ -1135,7 +1135,7 @@ print_nhm_turbo_ratio_limits: } fprintf(stderr, ")\n"); - if (!do_nehalem_turbo_ratio_limit) + if (!do_nhm_turbo_ratio_limit) return; get_msr(0, MSR_NHM_TURBO_RATIO_LIMIT, &msr); @@ -1462,8 +1462,7 @@ void check_dev_msr() struct stat sb; if (stat("/dev/cpu/0/msr", &sb)) - err(-5, "no /dev/cpu/0/msr\n" - "Try \"# modprobe msr\""); + err(-5, "no /dev/cpu/0/msr, Try \"# modprobe msr\" "); } void check_permissions() @@ -1496,13 +1495,27 @@ void check_permissions() /* if all else fails, thell them to be root */ if (do_exit) if (getuid() != 0) - warnx("Or simply run as root"); + warnx("... or simply run as root"); if (do_exit) exit(-6); } -int has_nehalem_turbo_ratio_limit(unsigned int family, unsigned int model) +/* + * NHM adds support for additional MSRs: + * + * MSR_SMI_COUNT 0x00000034 + * + * MSR_NHM_PLATFORM_INFO 0x000000ce + * MSR_NHM_SNB_PKG_CST_CFG_CTL 0x000000e2 + * + * MSR_PKG_C3_RESIDENCY 0x000003f8 + * MSR_PKG_C6_RESIDENCY 0x000003f9 + * MSR_CORE_C3_RESIDENCY 0x000003fc + * MSR_CORE_C6_RESIDENCY 0x000003fd + * + */ +int has_nhm_msrs(unsigned int family, unsigned int model) { if (!genuine_intel) return 0; @@ -1529,13 +1542,27 @@ int has_nehalem_turbo_ratio_limit(unsigned int family, unsigned int model) case 0x3D: /* BDW */ case 0x4F: /* BDX */ case 0x56: /* BDX-DE */ - return 1; case 0x2E: /* Nehalem-EX Xeon - Beckton */ case 0x2F: /* Westmere-EX Xeon - Eagleton */ + return 1; default: return 0; } } +int has_nhm_turbo_ratio_limit(unsigned int family, unsigned int model) +{ + if (!has_nhm_msrs(family, model)) + return 0; + + switch (model) { + /* Nehalem compatible, but do not include turbo-ratio limit support */ + case 0x2E: /* Nehalem-EX Xeon - Beckton */ + case 0x2F: /* Westmere-EX Xeon - Eagleton */ + return 0; + default: + return 1; + } +} int has_ivt_turbo_ratio_limit(unsigned int family, unsigned int model) { if (!genuine_intel) @@ -1994,8 +2021,15 @@ int print_rapl(struct thread_data *t, struct core_data *c, struct pkg_data *p) return 0; } +/* + * SNB adds support for additional MSRs: + * + * MSR_PKG_C7_RESIDENCY 0x000003fa + * MSR_CORE_C7_RESIDENCY 0x000003fe + * MSR_PKG_C2_RESIDENCY 0x0000060d + */ -int is_snb(unsigned int family, unsigned int model) +int has_snb_msrs(unsigned int family, unsigned int model) { if (!genuine_intel) return 0; @@ -2017,7 +2051,14 @@ int is_snb(unsigned int family, unsigned int model) return 0; } -int has_c8_c9_c10(unsigned int family, unsigned int model) +/* + * HSW adds support for additional MSRs: + * + * MSR_PKG_C8_RESIDENCY 0x00000630 + * MSR_PKG_C9_RESIDENCY 0x00000631 + * MSR_PKG_C10_RESIDENCY 0x00000632 + */ +int has_hsw_msrs(unsigned int family, unsigned int model) { if (!genuine_intel) return 0; @@ -2069,7 +2110,7 @@ double slm_bclk(void) double discover_bclk(unsigned int family, unsigned int model) { - if (is_snb(family, model)) + if (has_snb_msrs(family, model)) return 100.00; else if (is_slm(family, model)) return slm_bclk(); @@ -2117,7 +2158,7 @@ int set_temperature_target(struct thread_data *t, struct core_data *c, struct pk } /* Temperature Target MSR is Nehalem and newer only */ - if (!do_nehalem_platform_info) + if (!do_nhm_platform_info) goto guess; if (get_msr(0, MSR_IA32_TEMPERATURE_TARGET, &msr)) @@ -2181,18 +2222,15 @@ void check_cpuid() ebx = ecx = edx = 0; __get_cpuid(0x80000000, &max_level, &ebx, &ecx, &edx); - if (max_level < 0x80000007) - errx(1, "CPUID: no invariant TSC (max_level 0x%x)", max_level); + if (max_level >= 0x80000007) { - /* - * Non-Stop TSC is advertised by CPUID.EAX=0x80000007: EDX.bit8 - * this check is valid for both Intel and AMD - */ - __get_cpuid(0x80000007, &eax, &ebx, &ecx, &edx); - has_invariant_tsc = edx & (1 << 8); - - if (!has_invariant_tsc) - errx(1, "No invariant TSC"); + /* + * Non-Stop TSC is advertised by CPUID.EAX=0x80000007: EDX.bit8 + * this check is valid for both Intel and AMD + */ + __get_cpuid(0x80000007, &eax, &ebx, &ecx, &edx); + has_invariant_tsc = edx & (1 << 8); + } /* * APERF/MPERF is advertised by CPUID.EAX=0x6: ECX.bit0 @@ -2215,15 +2253,13 @@ void check_cpuid() if (!has_aperf) errx(-1, "No APERF"); - do_nehalem_platform_info = genuine_intel && has_invariant_tsc; - do_nhm_cstates = genuine_intel; /* all Intel w/ non-stop TSC have NHM counters */ - do_smi = do_nhm_cstates; - do_snb_cstates = is_snb(family, model); - do_c8_c9_c10 = has_c8_c9_c10(family, model); + do_nhm_platform_info = do_nhm_cstates = do_smi = has_nhm_msrs(family, model); + do_snb_cstates = has_snb_msrs(family, model); + do_c8_c9_c10 = has_hsw_msrs(family, model); do_slm_cstates = is_slm(family, model); bclk = discover_bclk(family, model); - do_nehalem_turbo_ratio_limit = has_nehalem_turbo_ratio_limit(family, model); + do_nhm_turbo_ratio_limit = has_nhm_turbo_ratio_limit(family, model); do_ivt_turbo_ratio_limit = has_ivt_turbo_ratio_limit(family, model); rapl_probe(family, model); perf_limit_reasons_probe(family, model); -- cgit v1.2.3 From a729617c58529be0be8faa22c5d45748bb0f12e5 Mon Sep 17 00:00:00 2001 From: Len Brown Date: Fri, 23 Jan 2015 01:33:58 -0500 Subject: tools/power turbostat: relax dependency on APERF_MSR While turbostat is significantly less useful on systems with no APERF_MSR, it seems more friendly to run on such systems and report what we can, rather than refusing to run. Update man page to reflect recent changes. Signed-off-by: Len Brown --- tools/power/x86/turbostat/turbostat.8 | 66 ++++++++++++++++++++++++----------- tools/power/x86/turbostat/turbostat.c | 47 ++++++++++++------------- 2 files changed, 68 insertions(+), 45 deletions(-) (limited to 'tools') diff --git a/tools/power/x86/turbostat/turbostat.8 b/tools/power/x86/turbostat/turbostat.8 index 56bfb523c5bb..9b950699e63d 100644 --- a/tools/power/x86/turbostat/turbostat.8 +++ b/tools/power/x86/turbostat/turbostat.8 @@ -12,16 +12,16 @@ turbostat \- Report processor frequency and idle statistics .RB [ "\-i interval_sec" ] .SH DESCRIPTION \fBturbostat \fP reports processor topology, frequency, -idle power-state statistics, temperature and power on modern X86 processors. -Either \fBcommand\fP is forked and statistics are printed -upon its completion, or statistics are printed periodically. - -\fBturbostat \fP -must be run on root, and -minimally requires that the processor -supports an "invariant" TSC, plus the APERF and MPERF MSRs. -Additional information is reported depending on hardware counter support. - +idle power-state statistics, temperature and power on X86 processors. +There are two ways to invoke turbostat. +The first method is to supply a +\fBcommand\fP, which is forked and statistics are printed +upon its completion. +The second method is to omit the command, +and turbodstat will print statistics every 5 seconds. +The 5-second interval can changed using the -i option. + +Some information is not availalbe on older processors. .SS Options The \fB-p\fP option limits output to the 1st thread in 1st core of each package. .PP @@ -130,12 +130,13 @@ cpu3: MSR_IA32_THERM_STATUS: 0x884e0000 (27 C +/- 1) ... .fi The \fBmax efficiency\fP frequency, a.k.a. Low Frequency Mode, is the frequency -available at the minimum package voltage. The \fBTSC frequency\fP is the nominal -maximum frequency of the processor if turbo-mode were not available. This frequency +available at the minimum package voltage. The \fBTSC frequency\fP is the base +frequency of the processor -- this should match the brand string +in /proc/cpuinfo. This base frequency should be sustainable on all CPUs indefinitely, given nominal power and cooling. The remaining rows show what maximum turbo frequency is possible -depending on the number of idle cores. Note that this information is -not available on all processors. +depending on the number of idle cores. Note that not all information is +available on all processors. .SH FORK EXAMPLE If turbostat is invoked with a command, it will fork that command and output the statistics gathered when the command exits. @@ -176,6 +177,11 @@ not including any non-busy idle time. .B "turbostat " must be run as root. +Alternatively, non-root users can be enabled to run turbostat this way: + +# setcap cap_sys_rawio=ep ./turbostat + +# chmod +r /dev/cpu/*/msr .B "turbostat " reads hardware counters, but doesn't write them. @@ -184,15 +190,33 @@ multiple invocations of itself. \fBturbostat \fP may work poorly on Linux-2.6.20 through 2.6.29, -as \fBacpi-cpufreq \fPperiodically cleared the APERF and MPERF +as \fBacpi-cpufreq \fPperiodically cleared the APERF and MPERF MSRs in those kernels. -If the TSC column does not make sense, then -the other numbers will also make no sense. -Turbostat is lightweight, and its data collection is not atomic. -These issues are usually caused by an extremely short measurement -interval (much less than 1 second), or system activity that prevents -turbostat from being able to run on all CPUS to quickly collect data. +AVG_MHz = APERF_delta/measurement_interval. This is the actual +number of elapsed cycles divided by the entire sample interval -- +including idle time. Note that this calculation is resiliant +to systems lacking a non-stop TSC. + +TSC_MHz = TSC_delta/measurement_interval. +On a system with an invariant TSC, this value will be constant +and will closely match the base frequency value shown +in the brand string in /proc/cpuinfo. On a system where +the TSC stops in idle, TSC_MHz will drop +below the processor's base frequency. + +%Busy = MPERF_delta/TSC_delta + +Bzy_MHz = TSC_delta/APERF_delta/MPERF_delta/measurement_interval + +Note that these calculations depend on TSC_delta, so they +are not reliable during intervals when TSC_MHz is not running at the base frequency. + +Turbostat data collection is not atomic. +Extremely short measurement intervals (much less than 1 second), +or system activity that prevents turbostat from being able +to run on all CPUS to quickly collect data, will result in +inconsistent results. The APERF, MPERF MSRs are defined to count non-halted cycles. Although it is not guaranteed by the architecture, turbostat assumes diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c index b654b641d4c3..a02c02f25e88 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -673,24 +673,26 @@ delta_thread(struct thread_data *new, struct thread_data *old, old->c1 = new->c1 - old->c1; - if ((new->aperf > old->aperf) && (new->mperf > old->mperf)) { - old->aperf = new->aperf - old->aperf; - old->mperf = new->mperf - old->mperf; - } else { + if (has_aperf) { + if ((new->aperf > old->aperf) && (new->mperf > old->mperf)) { + old->aperf = new->aperf - old->aperf; + old->mperf = new->mperf - old->mperf; + } else { - if (!aperf_mperf_unstable) { - fprintf(stderr, "%s: APERF or MPERF went backwards *\n", progname); - fprintf(stderr, "* Frequency results do not cover entire interval *\n"); - fprintf(stderr, "* fix this by running Linux-2.6.30 or later *\n"); + if (!aperf_mperf_unstable) { + fprintf(stderr, "%s: APERF or MPERF went backwards *\n", progname); + fprintf(stderr, "* Frequency results do not cover entire interval *\n"); + fprintf(stderr, "* fix this by running Linux-2.6.30 or later *\n"); - aperf_mperf_unstable = 1; + aperf_mperf_unstable = 1; + } + /* + * mperf delta is likely a huge "positive" number + * can not use it for calculating c0 time + */ + skip_c0 = 1; + skip_c1 = 1; } - /* - * mperf delta is likely a huge "positive" number - * can not use it for calculating c0 time - */ - skip_c0 = 1; - skip_c1 = 1; } @@ -2244,14 +2246,11 @@ void check_cpuid() has_epb = ecx & (1 << 3); if (verbose) - fprintf(stderr, "CPUID(6): %s%s%s%s\n", - has_aperf ? "APERF" : "No APERF!", - do_dts ? ", DTS" : "", - do_ptm ? ", PTM": "", - has_epb ? ", EPB": ""); - - if (!has_aperf) - errx(-1, "No APERF"); + fprintf(stderr, "CPUID(6): %sAPERF, %sDTS, %sPTM, %sEPB\n", + has_aperf ? "" : "No ", + do_dts ? "" : "No ", + do_ptm ? "" : "No ", + has_epb ? "" : "No "); do_nhm_platform_info = do_nhm_cstates = do_smi = has_nhm_msrs(family, model); do_snb_cstates = has_snb_msrs(family, model); @@ -2632,7 +2631,7 @@ int main(int argc, char **argv) cmdline(argc, argv); if (verbose) - fprintf(stderr, "turbostat v3.8 14-Aug 2014" + fprintf(stderr, "turbostat v3.9 23-Jan, 2015" " - Len Brown \n"); turbostat_init(); -- cgit v1.2.3 From ee7e38e3d8805ba6471bddd088fae92ce5ab1ef5 Mon Sep 17 00:00:00 2001 From: Len Brown Date: Mon, 9 Feb 2015 23:39:45 -0500 Subject: tools/power turbostat: Skip printing disabled package C-states Replaced previously open-coded Package C-state Limit decoding with table-driven decoding. In doing so, updated to match January 2015 "Intel(R) 64 and IA-23 Architectures Software Developer's Manual". In the past, turbostat would print package C-state residency columns for all package states supported by the model's architecture, even though a particular SKU may not support them, or they may be disabled by the BIOS. Now turbostat will skip printing colunns if MSRs indicate that they are not enabled. eg. many SKUs don't support PC7, and so that column will no longer be printed. Signed-off-by: Len Brown --- tools/power/x86/turbostat/turbostat.c | 188 +++++++++++++++++++++------------- 1 file changed, 116 insertions(+), 72 deletions(-) (limited to 'tools') diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c index a02c02f25e88..ba8846b309f7 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -53,6 +53,10 @@ unsigned int skip_c0; unsigned int skip_c1; unsigned int do_nhm_cstates; unsigned int do_snb_cstates; +unsigned int do_pc2; +unsigned int do_pc3; +unsigned int do_pc6; +unsigned int do_pc7; unsigned int do_c8_c9_c10; unsigned int do_slm_cstates; unsigned int use_c1_residency_msr; @@ -313,13 +317,13 @@ void print_header(void) if (do_ptm) outp += sprintf(outp, " PkgTmp"); - if (do_snb_cstates) + if (do_pc2) outp += sprintf(outp, " Pkg%%pc2"); - if (do_nhm_cstates && !do_slm_cstates) + if (do_pc3) outp += sprintf(outp, " Pkg%%pc3"); - if (do_nhm_cstates && !do_slm_cstates) + if (do_pc6) outp += sprintf(outp, " Pkg%%pc6"); - if (do_snb_cstates) + if (do_pc7) outp += sprintf(outp, " Pkg%%pc7"); if (do_c8_c9_c10) { outp += sprintf(outp, " Pkg%%pc8"); @@ -394,9 +398,12 @@ int dump_counters(struct thread_data *t, struct core_data *c, if (p) { outp += sprintf(outp, "package: %d\n", p->package_id); outp += sprintf(outp, "pc2: %016llX\n", p->pc2); - outp += sprintf(outp, "pc3: %016llX\n", p->pc3); - outp += sprintf(outp, "pc6: %016llX\n", p->pc6); - outp += sprintf(outp, "pc7: %016llX\n", p->pc7); + if (do_pc3) + outp += sprintf(outp, "pc3: %016llX\n", p->pc3); + if (do_pc6) + outp += sprintf(outp, "pc6: %016llX\n", p->pc6); + if (do_pc7) + outp += sprintf(outp, "pc7: %016llX\n", p->pc7); outp += sprintf(outp, "pc8: %016llX\n", p->pc8); outp += sprintf(outp, "pc9: %016llX\n", p->pc9); outp += sprintf(outp, "pc10: %016llX\n", p->pc10); @@ -528,13 +535,13 @@ int format_counters(struct thread_data *t, struct core_data *c, if (do_ptm) outp += sprintf(outp, "%8d", p->pkg_temp_c); - if (do_snb_cstates) + if (do_pc2) outp += sprintf(outp, "%8.2f", 100.0 * p->pc2/t->tsc); - if (do_nhm_cstates && !do_slm_cstates) + if (do_pc3) outp += sprintf(outp, "%8.2f", 100.0 * p->pc3/t->tsc); - if (do_nhm_cstates && !do_slm_cstates) + if (do_pc6) outp += sprintf(outp, "%8.2f", 100.0 * p->pc6/t->tsc); - if (do_snb_cstates) + if (do_pc7) outp += sprintf(outp, "%8.2f", 100.0 * p->pc7/t->tsc); if (do_c8_c9_c10) { outp += sprintf(outp, "%8.2f", 100.0 * p->pc8/t->tsc); @@ -631,9 +638,12 @@ void delta_package(struct pkg_data *new, struct pkg_data *old) { old->pc2 = new->pc2 - old->pc2; - old->pc3 = new->pc3 - old->pc3; - old->pc6 = new->pc6 - old->pc6; - old->pc7 = new->pc7 - old->pc7; + if (do_pc3) + old->pc3 = new->pc3 - old->pc3; + if (do_pc6) + old->pc6 = new->pc6 - old->pc6; + if (do_pc7) + old->pc7 = new->pc7 - old->pc7; old->pc8 = new->pc8 - old->pc8; old->pc9 = new->pc9 - old->pc9; old->pc10 = new->pc10 - old->pc10; @@ -774,9 +784,12 @@ void clear_counters(struct thread_data *t, struct core_data *c, struct pkg_data c->core_temp_c = 0; p->pc2 = 0; - p->pc3 = 0; - p->pc6 = 0; - p->pc7 = 0; + if (do_pc3) + p->pc3 = 0; + if (do_pc6) + p->pc6 = 0; + if (do_pc7) + p->pc7 = 0; p->pc8 = 0; p->pc9 = 0; p->pc10 = 0; @@ -815,9 +828,12 @@ int sum_counters(struct thread_data *t, struct core_data *c, return 0; average.packages.pc2 += p->pc2; - average.packages.pc3 += p->pc3; - average.packages.pc6 += p->pc6; - average.packages.pc7 += p->pc7; + if (do_pc3) + average.packages.pc3 += p->pc3; + if (do_pc6) + average.packages.pc6 += p->pc6; + if (do_pc7) + average.packages.pc7 += p->pc7; average.packages.pc8 += p->pc8; average.packages.pc9 += p->pc9; average.packages.pc10 += p->pc10; @@ -859,9 +875,12 @@ void compute_average(struct thread_data *t, struct core_data *c, average.cores.c7 /= topo.num_cores; average.packages.pc2 /= topo.num_packages; - average.packages.pc3 /= topo.num_packages; - average.packages.pc6 /= topo.num_packages; - average.packages.pc7 /= topo.num_packages; + if (do_pc3) + average.packages.pc3 /= topo.num_packages; + if (do_pc6) + average.packages.pc6 /= topo.num_packages; + if (do_pc7) + average.packages.pc7 /= topo.num_packages; average.packages.pc8 /= topo.num_packages; average.packages.pc9 /= topo.num_packages; @@ -961,18 +980,18 @@ int get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p) if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)) return 0; - if (do_nhm_cstates && !do_slm_cstates) { + if (do_pc3) if (get_msr(cpu, MSR_PKG_C3_RESIDENCY, &p->pc3)) return -9; + if (do_pc6) if (get_msr(cpu, MSR_PKG_C6_RESIDENCY, &p->pc6)) return -10; - } - if (do_snb_cstates) { + if (do_pc2) if (get_msr(cpu, MSR_PKG_C2_RESIDENCY, &p->pc2)) return -11; + if (do_pc7) if (get_msr(cpu, MSR_PKG_C7_RESIDENCY, &p->pc7)) return -12; - } if (do_c8_c9_c10) { if (get_msr(cpu, MSR_PKG_C8_RESIDENCY, &p->pc8)) return -13; @@ -1019,6 +1038,37 @@ int get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p) return 0; } +/* + * MSR_PKG_CST_CONFIG_CONTROL decoding for pkg_cstate_limit: + * If you change the values, note they are used both in comparisons + * (>= PCL__7) and to index pkg_cstate_limit_strings[]. + */ + +#define PCLUKN 0 /* Unknown */ +#define PCLRSV 1 /* Reserved */ +#define PCL__0 2 /* PC0 */ +#define PCL__1 3 /* PC1 */ +#define PCL__2 4 /* PC2 */ +#define PCL__3 5 /* PC3 */ +#define PCL__4 6 /* PC4 */ +#define PCL__6 7 /* PC6 */ +#define PCL_6N 8 /* PC6 No Retention */ +#define PCL_6R 9 /* PC6 Retention */ +#define PCL__7 10 /* PC7 */ +#define PCL_7S 11 /* PC7 Shrink */ +#define PCLUNL 12 /* Unlimited */ + +int pkg_cstate_limit = PCLUKN; +char *pkg_cstate_limit_strings[] = { "reserved", "unknown", "pc0", "pc1", "pc2", + "pc3", "pc4", "pc6", "pc6n", "pc6r", "pc7", "pc7s", "unlimited"}; + +int nhm_pkg_cstate_limits[8] = {PCL__0, PCL__1, PCL__3, PCL__6, PCL__7, PCLRSV, PCLRSV, PCLUNL}; +int snb_pkg_cstate_limits[8] = {PCL__0, PCL__2, PCL_6N, PCL_6R, PCL__7, PCL_7S, PCLRSV, PCLUNL}; +int hsw_pkg_cstate_limits[8] = {PCL__0, PCL__2, PCL__3, PCL__6, PCL__7, PCL_7S, PCLRSV, PCLUNL}; +int slv_pkg_cstate_limits[8] = {PCL__0, PCL__1, PCLRSV, PCLRSV, PCL__4, PCLRSV, PCL__6, PCL__7}; +int amt_pkg_cstate_limits[8] = {PCL__0, PCL__1, PCL__2, PCLRSV, PCLRSV, PCLRSV, PCL__6, PCL__7}; +int phi_pkg_cstate_limits[8] = {PCL__0, PCL__2, PCL_6N, PCL_6R, PCLRSV, PCLRSV, PCLRSV, PCLUNL}; + void print_verbose_header(void) { unsigned long long msr; @@ -1098,44 +1148,14 @@ print_nhm_turbo_ratio_limits: fprintf(stderr, "cpu0: MSR_NHM_SNB_PKG_CST_CFG_CTL: 0x%08llx", msr); - fprintf(stderr, " (%s%s%s%s%slocked: pkg-cstate-limit=%d: ", + fprintf(stderr, " (%s%s%s%s%slocked: pkg-cstate-limit=%d: %s)\n", (msr & SNB_C3_AUTO_UNDEMOTE) ? "UNdemote-C3, " : "", (msr & SNB_C1_AUTO_UNDEMOTE) ? "UNdemote-C1, " : "", (msr & NHM_C3_AUTO_DEMOTE) ? "demote-C3, " : "", (msr & NHM_C1_AUTO_DEMOTE) ? "demote-C1, " : "", (msr & (1 << 15)) ? "" : "UN", - (unsigned int)msr & 7); - - - switch(msr & 0x7) { - case 0: - fprintf(stderr, do_slm_cstates ? "no pkg states" : "pc0"); - break; - case 1: - fprintf(stderr, do_slm_cstates ? "no pkg states" : do_snb_cstates ? "pc2" : "pc0"); - break; - case 2: - fprintf(stderr, do_slm_cstates ? "invalid" : do_snb_cstates ? "pc6-noret" : "pc3"); - break; - case 3: - fprintf(stderr, do_slm_cstates ? "invalid" : "pc6"); - break; - case 4: - fprintf(stderr, do_slm_cstates ? "pc4" : "pc7"); - break; - case 5: - fprintf(stderr, do_slm_cstates ? "invalid" : do_snb_cstates ? "pc7s" : "invalid"); - break; - case 6: - fprintf(stderr, do_slm_cstates ? "pc6" : "invalid"); - break; - case 7: - fprintf(stderr, do_slm_cstates ? "pc7" : "unlimited"); - break; - default: - fprintf(stderr, "invalid"); - } - fprintf(stderr, ")\n"); + (unsigned int)msr & 7, + pkg_cstate_limit_strings[pkg_cstate_limit]); if (!do_nhm_turbo_ratio_limit) return; @@ -1516,9 +1536,14 @@ void check_permissions() * MSR_CORE_C3_RESIDENCY 0x000003fc * MSR_CORE_C6_RESIDENCY 0x000003fd * + * Side effect: + * sets global pkg_cstate_limit to decode MSR_NHM_SNB_PKG_CST_CFG_CTL */ -int has_nhm_msrs(unsigned int family, unsigned int model) +int probe_nhm_msrs(unsigned int family, unsigned int model) { + unsigned long long msr; + int *pkg_cstate_limits; + if (!genuine_intel) return 0; @@ -1531,31 +1556,46 @@ int has_nhm_msrs(unsigned int family, unsigned int model) case 0x1F: /* Core i7 and i5 Processor - Nehalem */ case 0x25: /* Westmere Client - Clarkdale, Arrandale */ case 0x2C: /* Westmere EP - Gulftown */ + case 0x2E: /* Nehalem-EX Xeon - Beckton */ + case 0x2F: /* Westmere-EX Xeon - Eagleton */ + pkg_cstate_limits = nhm_pkg_cstate_limits; + break; case 0x2A: /* SNB */ case 0x2D: /* SNB Xeon */ case 0x3A: /* IVB */ case 0x3E: /* IVB Xeon */ + pkg_cstate_limits = snb_pkg_cstate_limits; + break; case 0x3C: /* HSW */ case 0x3F: /* HSX */ case 0x45: /* HSW */ case 0x46: /* HSW */ - case 0x37: /* BYT */ - case 0x4D: /* AVN */ case 0x3D: /* BDW */ case 0x4F: /* BDX */ case 0x56: /* BDX-DE */ - case 0x2E: /* Nehalem-EX Xeon - Beckton */ - case 0x2F: /* Westmere-EX Xeon - Eagleton */ - return 1; + pkg_cstate_limits = hsw_pkg_cstate_limits; + break; + case 0x37: /* BYT */ + case 0x4D: /* AVN */ + pkg_cstate_limits = slv_pkg_cstate_limits; + break; + case 0x4C: /* AMT */ + pkg_cstate_limits = amt_pkg_cstate_limits; + break; + case 0x57: /* PHI */ + pkg_cstate_limits = phi_pkg_cstate_limits; + break; default: return 0; } + get_msr(0, MSR_NHM_SNB_PKG_CST_CFG_CTL, &msr); + + pkg_cstate_limit = pkg_cstate_limits[msr & 0x7]; + + return 1; } int has_nhm_turbo_ratio_limit(unsigned int family, unsigned int model) { - if (!has_nhm_msrs(family, model)) - return 0; - switch (model) { /* Nehalem compatible, but do not include turbo-ratio limit support */ case 0x2E: /* Nehalem-EX Xeon - Beckton */ @@ -2252,13 +2292,17 @@ void check_cpuid() do_ptm ? "" : "No ", has_epb ? "" : "No "); - do_nhm_platform_info = do_nhm_cstates = do_smi = has_nhm_msrs(family, model); + do_nhm_platform_info = do_nhm_cstates = do_smi = probe_nhm_msrs(family, model); do_snb_cstates = has_snb_msrs(family, model); + do_pc2 = do_snb_cstates && (pkg_cstate_limit >= PCL__2); + do_pc3 = (pkg_cstate_limit >= PCL__3); + do_pc6 = (pkg_cstate_limit >= PCL__6); + do_pc7 = do_snb_cstates && (pkg_cstate_limit >= PCL__7); do_c8_c9_c10 = has_hsw_msrs(family, model); do_slm_cstates = is_slm(family, model); bclk = discover_bclk(family, model); - do_nhm_turbo_ratio_limit = has_nhm_turbo_ratio_limit(family, model); + do_nhm_turbo_ratio_limit = do_nhm_platform_info && has_nhm_turbo_ratio_limit(family, model); do_ivt_turbo_ratio_limit = has_ivt_turbo_ratio_limit(family, model); rapl_probe(family, model); perf_limit_reasons_probe(family, model); @@ -2631,7 +2675,7 @@ int main(int argc, char **argv) cmdline(argc, argv); if (verbose) - fprintf(stderr, "turbostat v3.9 23-Jan, 2015" + fprintf(stderr, "turbostat v3.10 9-Feb, 2015" " - Len Brown \n"); turbostat_init(); -- cgit v1.2.3 From d8af6f5f0fca7c5271539dab0d75942ccf09d65c Mon Sep 17 00:00:00 2001 From: Len Brown Date: Tue, 10 Feb 2015 01:56:38 -0500 Subject: tools/power turbostat: update parameters, documentation Long format options added, though the short ones should still work. eg. the new "--Counter 0x10" is the same as the old "-C 0x10" Note this Incompatibility: Old: -v displayed verbose debug output New: -v and --version simpaly display version Additional parameters: -d and --debug display verbose debug output -h and --help display a help message Updated turbosat.8 man page accordingly. Signed-off-by: Len Brown --- tools/power/x86/turbostat/turbostat.8 | 68 ++++++++------- tools/power/x86/turbostat/turbostat.c | 155 +++++++++++++++++++++------------- 2 files changed, 136 insertions(+), 87 deletions(-) (limited to 'tools') diff --git a/tools/power/x86/turbostat/turbostat.8 b/tools/power/x86/turbostat/turbostat.8 index 9b950699e63d..feea7ad9500b 100644 --- a/tools/power/x86/turbostat/turbostat.8 +++ b/tools/power/x86/turbostat/turbostat.8 @@ -9,7 +9,7 @@ turbostat \- Report processor frequency and idle statistics .br .B turbostat .RB [ Options ] -.RB [ "\-i interval_sec" ] +.RB [ "\--interval seconds" ] .SH DESCRIPTION \fBturbostat \fP reports processor topology, frequency, idle power-state statistics, temperature and power on X86 processors. @@ -18,31 +18,41 @@ The first method is to supply a \fBcommand\fP, which is forked and statistics are printed upon its completion. The second method is to omit the command, -and turbodstat will print statistics every 5 seconds. -The 5-second interval can changed using the -i option. +and turbostat displays statistics every 5 seconds. +The 5-second interval can be changed using the --interval option. -Some information is not availalbe on older processors. +Some information is not available on older processors. .SS Options -The \fB-p\fP option limits output to the 1st thread in 1st core of each package. +\fB--Counter MSR#\fP shows the delta of the specified 64-bit MSR counter. .PP -The \fB-P\fP option limits output to the 1st thread in each Package. +\fB--counter MSR#\fP shows the delta of the specified 32-bit MSR counter. .PP -The \fB-S\fP option limits output to a 1-line System Summary for each interval. +\fB--Dump\fP displays the raw counter values. .PP -The \fB-v\fP option increases verbosity. +\fB--debug\fP displays additional system configuration information. Invoking this parameter +more than once may also enable internal turbostat debug information. .PP -The \fB-c MSR#\fP option includes the delta of the specified 32-bit MSR counter. +\fB--interval seconds\fP overrides the default 5-second measurement interval. .PP -The \fB-C MSR#\fP option includes the delta of the specified 64-bit MSR counter. +\fB--help\fP displays usage for the most common parameters. .PP -The \fB-m MSR#\fP option includes the the specified 32-bit MSR value. +\fB--Joules\fP displays energy in Joules, rather than dividing Joules by time to print power in Watts. .PP -The \fB-M MSR#\fP option includes the the specified 64-bit MSR value. +\fB--MSR MSR#\fP shows the specified 64-bit MSR value. .PP -The \fB-i interval_sec\fP option prints statistics every \fiinterval_sec\fP seconds. -The default is 5 seconds. +\fB--msr MSR#\fP shows the specified 32-bit MSR value. .PP -The \fBcommand\fP parameter forks \fBcommand\fP and upon its exit, +\fB--Package\fP limits output to the system summary plus the 1st thread in each Package. +.PP +\fB--processor\fP limits output to the system summary plus the 1st thread in each processor of each package. Ie. it skips hyper-threaded siblings. +.PP +\fB--Summary\fP limits output to a 1-line System Summary for each interval. +.PP +\fB--TCC temperature\fP sets the Thermal Control Circuit temperature for systems which do not export that value. This is used for making sense of the Digital Thermal Sensor outputs, as they return degrees Celsius below the TCC activation temperature. +.PP +\fB--version\fP displays the version. +.PP +The \fBcommand\fP parameter forks \fBcommand\fP, and upon its exit, displays the statistics gathered since it was forked. .PP .SH FIELD DESCRIPTIONS @@ -52,7 +62,7 @@ displays the statistics gathered since it was forked. \fBCPU\fP Linux CPU (logical processor) number. Note that multiple CPUs per core indicate support for Intel(R) Hyper-Threading Technology. \fBAVG_MHz\fP number of cycles executed divided by time elapsed. -\fB%Buzy\fP percent of the interval that the CPU retired instructions, aka. % of time in "C0" state. +\fB%Busy\fP percent of the interval that the CPU retired instructions, aka. % of time in "C0" state. \fBBzy_MHz\fP average clock rate while the CPU was busy (in "c0" state). \fBTSC_MHz\fP average MHz that the TSC ran during the entire interval. \fBCPU%c1, CPU%c3, CPU%c6, CPU%c7\fP show the percentage residency in hardware core idle states. @@ -68,7 +78,7 @@ Note that multiple CPUs per core indicate support for Intel(R) Hyper-Threading T .fi .PP .SH EXAMPLE -Without any parameters, turbostat prints out counters ever 5 seconds. +Without any parameters, turbostat displays statistics ever 5 seconds. (override interval with "-i sec" option, or specify a command for turbostat to fork). @@ -91,19 +101,19 @@ Subsequent rows show per-CPU statistics. 3 3 3 0.20 1596 3492 0 0.44 0.00 99.37 0.00 23 3 7 5 0.31 1596 3492 0 0.33 .fi -.SH VERBOSE EXAMPLE -The "-v" option adds verbosity to the output: +.SH DEBUG EXAMPLE +The "--debug" option prints additional system information before measurements: .nf -[root@ivy]# turbostat -v -turbostat v3.0 November 23, 2012 - Len Brown +turbostat version 4.0 10-Feb, 2015 - Len Brown CPUID(0): GenuineIntel 13 CPUID levels; family:model:stepping 0x6:3a:9 (6:58:9) CPUID(6): APERF, DTS, PTM, EPB -RAPL: 851 sec. Joule Counter Range +RAPL: 851 sec. Joule Counter Range, at 77 Watts cpu0: MSR_NHM_PLATFORM_INFO: 0x81010f0012300 16 * 100 = 1600 MHz max efficiency 35 * 100 = 3500 MHz TSC frequency -cpu0: MSR_NHM_SNB_PKG_CST_CFG_CTL: 0x1e008402 (UNdemote-C3, UNdemote-C1, demote-C3, demote-C1, locked: pkg-cstate-limit=2: pc6-noret) +cpu0: MSR_IA32_POWER_CTL: 0x0014005d (C1E auto-promotion: DISabled) +cpu0: MSR_NHM_SNB_PKG_CST_CFG_CTL: 0x1e008402 (UNdemote-C3, UNdemote-C1, demote-C3, demote-C1, locked: pkg-cstate-limit=2: pc6n) cpu0: MSR_NHM_TURBO_RATIO_LIMIT: 0x25262727 37 * 100 = 3700 MHz max turbo 4 active cores 38 * 100 = 3800 MHz max turbo 3 active cores @@ -112,9 +122,9 @@ cpu0: MSR_NHM_TURBO_RATIO_LIMIT: 0x25262727 cpu0: MSR_IA32_ENERGY_PERF_BIAS: 0x00000006 (balanced) cpu0: MSR_RAPL_POWER_UNIT: 0x000a1003 (0.125000 Watts, 0.000015 Joules, 0.000977 sec.) cpu0: MSR_PKG_POWER_INFO: 0x01e00268 (77 W TDP, RAPL 60 - 0 W, 0.000000 sec.) -cpu0: MSR_PKG_POWER_LIMIT: 0x830000148268 (UNlocked) +cpu0: MSR_PKG_POWER_LIMIT: 0x30000148268 (UNlocked) cpu0: PKG Limit #1: ENabled (77.000000 Watts, 1.000000 sec, clamp DISabled) -cpu0: PKG Limit #2: ENabled (96.000000 Watts, 0.000977* sec, clamp DISabled) +cpu0: PKG Limit #2: DISabled (96.000000 Watts, 0.000977* sec, clamp DISabled) cpu0: MSR_PP0_POLICY: 0 cpu0: MSR_PP0_POWER_LIMIT: 0x00000000 (UNlocked) cpu0: Cores Limit: DISabled (0.000000 Watts, 0.000977 sec, clamp DISabled) @@ -123,9 +133,9 @@ cpu0: MSR_PP1_POWER_LIMIT: 0x00000000 (UNlocked) cpu0: GFX Limit: DISabled (0.000000 Watts, 0.000977 sec, clamp DISabled) cpu0: MSR_IA32_TEMPERATURE_TARGET: 0x00691400 (105 C) cpu0: MSR_IA32_PACKAGE_THERM_STATUS: 0x884e0000 (27 C) -cpu0: MSR_IA32_THERM_STATUS: 0x88560000 (19 C +/- 1) -cpu1: MSR_IA32_THERM_STATUS: 0x88560000 (19 C +/- 1) -cpu2: MSR_IA32_THERM_STATUS: 0x88540000 (21 C +/- 1) +cpu0: MSR_IA32_THERM_STATUS: 0x88580000 (17 C +/- 1) +cpu1: MSR_IA32_THERM_STATUS: 0x885a0000 (15 C +/- 1) +cpu2: MSR_IA32_THERM_STATUS: 0x88570000 (18 C +/- 1) cpu3: MSR_IA32_THERM_STATUS: 0x884e0000 (27 C +/- 1) ... .fi @@ -195,7 +205,7 @@ in those kernels. AVG_MHz = APERF_delta/measurement_interval. This is the actual number of elapsed cycles divided by the entire sample interval -- -including idle time. Note that this calculation is resiliant +including idle time. Note that this calculation is resilient to systems lacking a non-stop TSC. TSC_MHz = TSC_delta/measurement_interval. diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c index ba8846b309f7..3f5a9af34f47 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -33,6 +33,7 @@ #include #include #include +#include #include #include #include @@ -42,13 +43,11 @@ #include char *proc_stat = "/proc/stat"; -unsigned int interval_sec = 5; /* set with -i interval_sec */ -unsigned int verbose; /* set with -v */ -unsigned int rapl_verbose; /* set with -R */ -unsigned int rapl_joules; /* set with -J */ -unsigned int thermal_verbose; /* set with -T */ -unsigned int summary_only; /* set with -S */ -unsigned int dump_only; /* set with -s */ +unsigned int interval_sec = 5; +unsigned int debug; +unsigned int rapl_joules; +unsigned int summary_only; +unsigned int dump_only; unsigned int skip_c0; unsigned int skip_c1; unsigned int do_nhm_cstates; @@ -727,7 +726,7 @@ delta_thread(struct thread_data *new, struct thread_data *old, } if (old->mperf == 0) { - if (verbose > 1) fprintf(stderr, "cpu%d MPERF 0!\n", old->cpu_id); + if (debug > 1) fprintf(stderr, "cpu%d MPERF 0!\n", old->cpu_id); old->mperf = 1; /* divide by 0 protection */ } @@ -1847,7 +1846,7 @@ void rapl_probe(unsigned int family, unsigned int model) tdp = get_tdp(model); rapl_joule_counter_range = 0xFFFFFFFF * rapl_energy_units / tdp; - if (verbose) + if (debug) fprintf(stderr, "RAPL: %.0f sec. Joule Counter Range, at %.0f Watts\n", rapl_joule_counter_range, tdp); return; @@ -1972,7 +1971,7 @@ int print_rapl(struct thread_data *t, struct core_data *c, struct pkg_data *p) if (get_msr(cpu, MSR_RAPL_POWER_UNIT, &msr)) return -1; - if (verbose) { + if (debug) { fprintf(stderr, "cpu%d: MSR_RAPL_POWER_UNIT: 0x%08llx " "(%f Watts, %f Joules, %f sec.)\n", cpu, msr, rapl_power_units, rapl_energy_units, rapl_time_units); @@ -2029,7 +2028,7 @@ int print_rapl(struct thread_data *t, struct core_data *c, struct pkg_data *p) print_power_limit_msr(cpu, msr, "DRAM Limit"); } if (do_rapl & RAPL_CORE_POLICY) { - if (verbose) { + if (debug) { if (get_msr(cpu, MSR_PP0_POLICY, &msr)) return -7; @@ -2037,7 +2036,7 @@ int print_rapl(struct thread_data *t, struct core_data *c, struct pkg_data *p) } } if (do_rapl & RAPL_CORES) { - if (verbose) { + if (debug) { if (get_msr(cpu, MSR_PP0_POWER_LIMIT, &msr)) return -9; @@ -2047,7 +2046,7 @@ int print_rapl(struct thread_data *t, struct core_data *c, struct pkg_data *p) } } if (do_rapl & RAPL_GFX) { - if (verbose) { + if (debug) { if (get_msr(cpu, MSR_PP1_POLICY, &msr)) return -8; @@ -2208,7 +2207,7 @@ int set_temperature_target(struct thread_data *t, struct core_data *c, struct pk target_c_local = (msr >> 16) & 0xFF; - if (verbose) + if (debug) fprintf(stderr, "cpu%d: MSR_IA32_TEMPERATURE_TARGET: 0x%08llx (%d C)\n", cpu, msr, target_c_local); @@ -2238,7 +2237,7 @@ void check_cpuid() if (ebx == 0x756e6547 && edx == 0x49656e69 && ecx == 0x6c65746e) genuine_intel = 1; - if (verbose) + if (debug) fprintf(stderr, "CPUID(0): %.4s%.4s%.4s ", (char *)&ebx, (char *)&edx, (char *)&ecx); @@ -2249,7 +2248,7 @@ void check_cpuid() if (family == 6 || family == 0xf) model += ((fms >> 16) & 0xf) << 4; - if (verbose) + if (debug) fprintf(stderr, "%d CPUID levels; family:model:stepping 0x%x:%x:%x (%d:%d:%d)\n", max_level, family, model, stepping, family, model, stepping); @@ -2285,7 +2284,7 @@ void check_cpuid() do_ptm = eax & (1 << 6); has_epb = ecx & (1 << 3); - if (verbose) + if (debug) fprintf(stderr, "CPUID(6): %sAPERF, %sDTS, %sPTM, %sEPB\n", has_aperf ? "" : "No ", do_dts ? "" : "No ", @@ -2311,10 +2310,25 @@ void check_cpuid() } -void usage() +void help() { - errx(1, "%s: [-v][-R][-T][-p|-P|-S][-c MSR#][-C MSR#][-m MSR#][-M MSR#][-i interval_sec | command ...]\n", - progname); + fprintf(stderr, + "Usage: turbostat [OPTIONS][(--interval seconds) | COMMAND ...]\n" + "\n" + "Turbostat forks the specified COMMAND and prints statistics\n" + "when COMMAND completes.\n" + "If no COMMAND is specified, turbostat wakes every 5-seconds\n" + "to print statistics, until interrupted.\n" + "--debug run in \"debug\" mode\n" + "--interval sec Override default 5-second measurement interval\n" + "--help print this help message\n" + "--counter msr print 32-bit counter at address \"msr\"\n" + "--Counter msr print 64-bit Counter at address \"msr\"\n" + "--msr msr print 32-bit value at address \"msr\"\n" + "--MSR msr print 64-bit Value at address \"msr\"\n" + "--version print version information\n" + "\n" + "For more help, run \"man turbostat\"\n"); } @@ -2353,7 +2367,7 @@ void topology_probe() if (!summary_only && topo.num_cpus > 1) show_cpu = 1; - if (verbose > 1) + if (debug > 1) fprintf(stderr, "num_cpus %d max_cpu_num %d\n", topo.num_cpus, topo.max_cpu_num); cpus = calloc(1, (topo.max_cpu_num + 1) * sizeof(struct cpu_topology)); @@ -2388,7 +2402,7 @@ void topology_probe() int siblings; if (cpu_is_not_present(i)) { - if (verbose > 1) + if (debug > 1) fprintf(stderr, "cpu%d NOT PRESENT\n", i); continue; } @@ -2403,26 +2417,26 @@ void topology_probe() siblings = get_num_ht_siblings(i); if (siblings > max_siblings) max_siblings = siblings; - if (verbose > 1) + if (debug > 1) fprintf(stderr, "cpu %d pkg %d core %d\n", i, cpus[i].physical_package_id, cpus[i].core_id); } topo.num_cores_per_pkg = max_core_id + 1; - if (verbose > 1) + if (debug > 1) fprintf(stderr, "max_core_id %d, sizing for %d cores per package\n", max_core_id, topo.num_cores_per_pkg); if (!summary_only && topo.num_cores_per_pkg > 1) show_core = 1; topo.num_packages = max_package_id + 1; - if (verbose > 1) + if (debug > 1) fprintf(stderr, "max_package_id %d, sizing for %d packages\n", max_package_id, topo.num_packages); if (!summary_only && topo.num_packages > 1) show_pkg = 1; topo.num_threads_per_core = max_siblings; - if (verbose > 1) + if (debug > 1) fprintf(stderr, "max_siblings %d\n", max_siblings); free(cpus); @@ -2537,21 +2551,21 @@ void turbostat_init() setup_all_buffers(); - if (verbose) + if (debug) print_verbose_header(); - if (verbose) + if (debug) for_all_cpus(print_epb, ODD_COUNTERS); - if (verbose) + if (debug) for_all_cpus(print_perf_limit, ODD_COUNTERS); - if (verbose) + if (debug) for_all_cpus(print_rapl, ODD_COUNTERS); for_all_cpus(set_temperature_target, ODD_COUNTERS); - if (verbose) + if (debug) for_all_cpus(print_thermal, ODD_COUNTERS); } @@ -2616,56 +2630,82 @@ int get_and_dump_counters(void) return status; } +void print_version() { + fprintf(stderr, "turbostat version 4.0 10-Feb, 2015" + " - Len Brown \n"); +} + void cmdline(int argc, char **argv) { int opt; + int option_index = 0; + static struct option long_options[] = { + {"Counter", required_argument, 0, 'C'}, + {"counter", required_argument, 0, 'c'}, + {"Dump", no_argument, 0, 'D'}, + {"debug", no_argument, 0, 'd'}, + {"interval", required_argument, 0, 'i'}, + {"help", no_argument, 0, 'h'}, + {"Joules", no_argument, 0, 'J'}, + {"MSR", required_argument, 0, 'M'}, + {"msr", required_argument, 0, 'm'}, + {"Package", no_argument, 0, 'p'}, + {"processor", no_argument, 0, 'p'}, + {"Summary", no_argument, 0, 'S'}, + {"TCC", required_argument, 0, 'T'}, + {"version", no_argument, 0, 'v' }, + {0, 0, 0, 0 } + }; progname = argv[0]; - while ((opt = getopt(argc, argv, "+pPsSvi:c:C:m:M:RJT:")) != -1) { + while ((opt = getopt_long_only(argc, argv, "C:c:Ddhi:JM:m:PpST:v", + long_options, &option_index)) != -1) { switch (opt) { - case 'p': - show_core_only++; + case 'C': + sscanf(optarg, "%x", &extra_delta_offset64); break; - case 'P': - show_pkg_only++; + case 'c': + sscanf(optarg, "%x", &extra_delta_offset32); break; - case 's': + case 'D': dump_only++; break; - case 'S': - summary_only++; - break; - case 'v': - verbose++; + case 'd': + debug++; break; + case 'h': + default: + help(); + exit(1); case 'i': interval_sec = atoi(optarg); break; - case 'c': - sscanf(optarg, "%x", &extra_delta_offset32); + case 'J': + rapl_joules++; break; - case 'C': - sscanf(optarg, "%x", &extra_delta_offset64); + case 'M': + sscanf(optarg, "%x", &extra_msr_offset64); break; case 'm': sscanf(optarg, "%x", &extra_msr_offset32); break; - case 'M': - sscanf(optarg, "%x", &extra_msr_offset64); + case 'P': + show_pkg_only++; + break; + case 'p': + show_core_only++; break; - case 'R': - rapl_verbose++; + case 'S': + summary_only++; break; case 'T': tcc_activation_temp_override = atoi(optarg); break; - case 'J': - rapl_joules++; + case 'v': + print_version(); + exit(0); break; - - default: - usage(); } } } @@ -2674,9 +2714,8 @@ int main(int argc, char **argv) { cmdline(argc, argv); - if (verbose) - fprintf(stderr, "turbostat v3.10 9-Feb, 2015" - " - Len Brown \n"); + if (debug) + print_version(); turbostat_init(); -- cgit v1.2.3 From 48a0631c891ab581cc010b44655ad49ff6eb3325 Mon Sep 17 00:00:00 2001 From: Len Brown Date: Tue, 10 Feb 2015 15:38:04 -0500 Subject: tools/power turbostat: support additional Broadwell model Signed-off-by: Len Brown --- tools/power/x86/turbostat/turbostat.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c index 3f5a9af34f47..2d089cac8580 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -1570,6 +1570,7 @@ int probe_nhm_msrs(unsigned int family, unsigned int model) case 0x45: /* HSW */ case 0x46: /* HSW */ case 0x3D: /* BDW */ + case 0x47: /* BDW */ case 0x4F: /* BDX */ case 0x56: /* BDX-DE */ pkg_cstate_limits = hsw_pkg_cstate_limits; @@ -1808,6 +1809,7 @@ void rapl_probe(unsigned int family, unsigned int model) case 0x45: /* HSW */ case 0x46: /* HSW */ case 0x3D: /* BDW */ + case 0x47: /* BDW */ do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_GFX | RAPL_PKG_POWER_INFO; break; case 0x3F: /* HSX */ @@ -2085,6 +2087,7 @@ int has_snb_msrs(unsigned int family, unsigned int model) case 0x45: /* HSW */ case 0x46: /* HSW */ case 0x3D: /* BDW */ + case 0x47: /* BDW */ case 0x4F: /* BDX */ case 0x56: /* BDX-DE */ return 1; @@ -2631,7 +2634,7 @@ int get_and_dump_counters(void) } void print_version() { - fprintf(stderr, "turbostat version 4.0 10-Feb, 2015" + fprintf(stderr, "turbostat version 4.1 10-Feb, 2015" " - Len Brown \n"); } -- cgit v1.2.3 From a454bb36cabdac163fcd80ddb37662893ea603f1 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 11 Feb 2015 15:15:09 +1030 Subject: lguest: have --rng read from /dev/urandom not /dev/random. Theoretical debates aside, now it boots. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index 32cf2ce15d69..3f7f2326cd9a 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -1733,9 +1733,9 @@ static void setup_block_file(const char *filename) } /*L:211 - * Our random number generator device reads from /dev/random into the Guest's + * Our random number generator device reads from /dev/urandom into the Guest's * input buffers. The usual case is that the Guest doesn't want random numbers - * and so has no buffers although /dev/random is still readable, whereas + * and so has no buffers although /dev/urandom is still readable, whereas * console is the reverse. * * The same logic applies, however. @@ -1763,7 +1763,7 @@ static void rng_input(struct virtqueue *vq) while (!iov_empty(iov, in_num)) { len = readv(rng_info->rfd, iov, in_num); if (len <= 0) - err(1, "Read from /dev/random gave %i", len); + err(1, "Read from /dev/urandom gave %i", len); iov_consume(iov, in_num, NULL, len); totlen += len; } @@ -1780,8 +1780,8 @@ static void setup_rng(void) struct device *dev; struct rng_info *rng_info = malloc(sizeof(*rng_info)); - /* Our device's privat info simply contains the /dev/random fd. */ - rng_info->rfd = open_or_die("/dev/random", O_RDONLY); + /* Our device's private info simply contains the /dev/urandom fd. */ + rng_info->rfd = open_or_die("/dev/urandom", O_RDONLY); /* Create the new device. */ dev = new_device("rng", VIRTIO_ID_RNG); -- cgit v1.2.3 From 69a09dc1742ffbb3b02f3a1e03da4801e96452e9 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 11 Feb 2015 15:15:09 +1030 Subject: lguest: write more information to userspace about pending traps. This is preparation for userspace handling MMIO and ioport accesses. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index 3f7f2326cd9a..0e754d04876d 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -1820,17 +1820,21 @@ static void __attribute__((noreturn)) restart_guest(void) static void __attribute__((noreturn)) run_guest(void) { for (;;) { - unsigned long notify_addr; + struct lguest_pending notify; int readval; /* We read from the /dev/lguest device to run the Guest. */ - readval = pread(lguest_fd, ¬ify_addr, - sizeof(notify_addr), cpu_id); + readval = pread(lguest_fd, ¬ify, sizeof(notify), cpu_id); /* One unsigned long means the Guest did HCALL_NOTIFY */ - if (readval == sizeof(notify_addr)) { - verbose("Notify on address %#lx\n", notify_addr); - handle_output(notify_addr); + if (readval == sizeof(notify)) { + if (notify.trap == 0x1F) { + verbose("Notify on address %#08x\n", + notify.addr); + handle_output(notify.addr); + } else + errx(1, "Unknown trap %i addr %#08x\n", + notify.trap, notify.addr); /* ENOENT means the Guest died. Reading tells us why. */ } else if (errno == ENOENT) { char reason[1024] = { 0 }; -- cgit v1.2.3 From c565650b1028bc551e5d16dd0ec8f7078da7cace Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 11 Feb 2015 15:15:10 +1030 Subject: lguest: send trap 13 through to userspace. We copy 7 bytes at eip for userspace's instruction decode; we have to carefully handle the case where eip is at the end of a page. We can't leave this to userspace since kernel has all the page table decode logic. The decode logic moves to userspace, basically unchanged. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 149 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 149 insertions(+) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index 0e754d04876d..b2217657f62c 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -41,6 +41,7 @@ #include #include #include +#include #ifndef VIRTIO_F_ANY_LAYOUT #define VIRTIO_F_ANY_LAYOUT 27 @@ -1143,6 +1144,150 @@ static void handle_output(unsigned long addr) strnlen(from_guest_phys(addr), guest_limit - addr)); } +/*L:216 + * This is where we emulate a handful of Guest instructions. It's ugly + * and we used to do it in the kernel but it grew over time. + */ + +/* + * We use the ptrace syscall's pt_regs struct to talk about registers + * to lguest: these macros convert the names to the offsets. + */ +#define getreg(name) getreg_off(offsetof(struct user_regs_struct, name)) +#define setreg(name, val) \ + setreg_off(offsetof(struct user_regs_struct, name), (val)) + +static u32 getreg_off(size_t offset) +{ + u32 r; + unsigned long args[] = { LHREQ_GETREG, offset }; + + if (pwrite(lguest_fd, args, sizeof(args), cpu_id) < 0) + err(1, "Getting register %u", offset); + if (pread(lguest_fd, &r, sizeof(r), cpu_id) != sizeof(r)) + err(1, "Reading register %u", offset); + + return r; +} + +static void setreg_off(size_t offset, u32 val) +{ + unsigned long args[] = { LHREQ_SETREG, offset, val }; + + if (pwrite(lguest_fd, args, sizeof(args), cpu_id) < 0) + err(1, "Setting register %u", offset); +} + +static void emulate_insn(const u8 insn[]) +{ + unsigned long args[] = { LHREQ_TRAP, 13 }; + unsigned int insnlen = 0, in = 0, small_operand = 0, byte_access; + unsigned int eax, port, mask; + /* + * We always return all-ones on IO port reads, which traditionally + * means "there's nothing there". + */ + u32 val = 0xFFFFFFFF; + + /* + * This must be the Guest kernel trying to do something, not userspace! + * The bottom two bits of the CS segment register are the privilege + * level. + */ + if ((getreg(xcs) & 3) != 0x1) + goto no_emulate; + + /* Decoding x86 instructions is icky. */ + + /* + * Around 2.6.33, the kernel started using an emulation for the + * cmpxchg8b instruction in early boot on many configurations. This + * code isn't paravirtualized, and it tries to disable interrupts. + * Ignore it, which will Mostly Work. + */ + if (insn[insnlen] == 0xfa) { + /* "cli", or Clear Interrupt Enable instruction. Skip it. */ + insnlen = 1; + goto skip_insn; + } + + /* + * 0x66 is an "operand prefix". It means a 16, not 32 bit in/out. + */ + if (insn[insnlen] == 0x66) { + small_operand = 1; + /* The instruction is 1 byte so far, read the next byte. */ + insnlen = 1; + } + + /* If the lower bit isn't set, it's a single byte access */ + byte_access = !(insn[insnlen] & 1); + + /* + * Now we can ignore the lower bit and decode the 4 opcodes + * we need to emulate. + */ + switch (insn[insnlen] & 0xFE) { + case 0xE4: /* in ,%al */ + port = insn[insnlen+1]; + insnlen += 2; + in = 1; + break; + case 0xEC: /* in (%dx),%al */ + port = getreg(edx) & 0xFFFF; + insnlen += 1; + in = 1; + break; + case 0xE6: /* out %al, */ + port = insn[insnlen+1]; + insnlen += 2; + break; + case 0xEE: /* out %al,(%dx) */ + port = getreg(edx) & 0xFFFF; + insnlen += 1; + break; + default: + /* OK, we don't know what this is, can't emulate. */ + goto no_emulate; + } + + /* Set a mask of the 1, 2 or 4 bytes, depending on size of IO */ + if (byte_access) + mask = 0xFF; + else if (small_operand) + mask = 0xFFFF; + else + mask = 0xFFFFFFFF; + + /* + * If it was an "IN" instruction, they expect the result to be read + * into %eax, so we change %eax. + */ + eax = getreg(eax); + + if (in) { + /* Clear the bits we're about to read */ + eax &= ~mask; + /* Copy bits in from val. */ + eax |= val & mask; + /* Now update the register. */ + setreg(eax, eax); + } + + verbose("IO %s of %x to %u: %#08x\n", + in ? "IN" : "OUT", mask, port, eax); +skip_insn: + /* Finally, we've "done" the instruction, so move past it. */ + setreg(eip, getreg(eip) + insnlen); + return; + +no_emulate: + /* Inject trap into Guest. */ + if (write(lguest_fd, args, sizeof(args)) < 0) + err(1, "Reinjecting trap 13 for fault at %#x", getreg(eip)); +} + + /*L:190 * Device Setup * @@ -1832,6 +1977,10 @@ static void __attribute__((noreturn)) run_guest(void) verbose("Notify on address %#08x\n", notify.addr); handle_output(notify.addr); + } else if (notify.trap == 13) { + verbose("Emulating instruction at %#x\n", + getreg(eip)); + emulate_insn(notify.insn); } else errx(1, "Unknown trap %i addr %#08x\n", notify.trap, notify.addr); -- cgit v1.2.3 From 48fd6b71d60ef66ef2d791045d750168c0d09201 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 11 Feb 2015 15:15:10 +1030 Subject: lguest: suppress PS/2 keyboard polling. While hacking on getting I/O out to the lguest launcher, I noticed that returning 0xFF for the PS/2 keyboard status made it spin for a while thinking there was a key pending. Fix this by returning 1 instead of 0xFF. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index b2217657f62c..485fe13db12e 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -1259,6 +1259,10 @@ static void emulate_insn(const u8 insn[]) else mask = 0xFFFFFFFF; + /* This is the PS/2 keyboard status; 1 means ready for output */ + if (port == 0x64) + val = 1; + /* * If it was an "IN" instruction, they expect the result to be read * into %eax, so we change %eax. -- cgit v1.2.3 From 7313d5217e6b9817897172d6a6ff477bdc415ed6 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 11 Feb 2015 15:15:10 +1030 Subject: lguest: add iomem region, where guest page faults get sent to userspace. This lets us implement PCI. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index 485fe13db12e..02f353989e6c 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -548,7 +548,8 @@ static void tell_kernel(unsigned long start) { unsigned long args[] = { LHREQ_INITIALIZE, (unsigned long)guest_base, - guest_limit / getpagesize(), start }; + guest_limit / getpagesize(), start, + guest_limit / getpagesize() }; verbose("Guest: %p - %p (%#lx)\n", guest_base, guest_base + guest_limit, guest_limit); lguest_fd = open_or_die("/dev/lguest", O_RDWR); -- cgit v1.2.3 From 0a6bcc183f5377eca07cbf0cf6f4b6cb00e4c1ec Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 11 Feb 2015 15:15:11 +1030 Subject: lguest: add MMIO region allocator in example launcher. This is where we point our PCI BARs, so that we can intercept MMIO accesses. We tell the kernel about it so any faults in this area are directed to us. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 28 +++++++++++++++++++++++----- 1 file changed, 23 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index 02f353989e6c..35d7aa90aa24 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -92,7 +92,7 @@ static bool verbose; /* The pointer to the start of guest memory. */ static void *guest_base; /* The maximum guest physical address allowed, and maximum possible. */ -static unsigned long guest_limit, guest_max; +static unsigned long guest_limit, guest_max, guest_mmio; /* The /dev/lguest file descriptor. */ static int lguest_fd; @@ -321,6 +321,23 @@ static void *get_pages(unsigned int num) return addr; } +/* Get some bytes which won't be mapped into the guest. */ +static unsigned long get_mmio_region(size_t size) +{ + unsigned long addr = guest_mmio; + size_t i; + + if (!size) + return addr; + + /* Size has to be a power of 2 (and multiple of 16) */ + for (i = 1; i < size; i <<= 1); + + guest_mmio += i; + + return addr; +} + /* * This routine is used to load the kernel or initrd. It tries mmap, but if * that fails (Plan 9's kernel file isn't nicely aligned on page boundaries), @@ -549,9 +566,10 @@ static void tell_kernel(unsigned long start) unsigned long args[] = { LHREQ_INITIALIZE, (unsigned long)guest_base, guest_limit / getpagesize(), start, - guest_limit / getpagesize() }; - verbose("Guest: %p - %p (%#lx)\n", - guest_base, guest_base + guest_limit, guest_limit); + (guest_mmio+getpagesize()-1) / getpagesize() }; + verbose("Guest: %p - %p (%#lx, MMIO %#lx)\n", + guest_base, guest_base + guest_limit, + guest_limit, guest_mmio); lguest_fd = open_or_die("/dev/lguest", O_RDWR); if (write(lguest_fd, args, sizeof(args)) < 0) err(1, "Writing to /dev/lguest"); @@ -2079,7 +2097,7 @@ int main(int argc, char *argv[]) guest_base = map_zeroed_pages(mem / getpagesize() + DEVICE_PAGES); guest_limit = mem; - guest_max = mem + DEVICE_PAGES*getpagesize(); + guest_max = guest_mmio = mem + DEVICE_PAGES*getpagesize(); devices.descpage = get_pages(1); break; } -- cgit v1.2.3 From 6a54f9ab0d65a2095de50160b8ca7ce6469aaac0 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 11 Feb 2015 15:15:11 +1030 Subject: lguest: decode mmio accesses for PCI in example launcher. We don't do anything with them yet (emulate_mmio_write and emulate_mmio_read are stubs), but we decode the instructions and search for the device they're hitting. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 167 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 167 insertions(+) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index 35d7aa90aa24..e52a3571076a 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -99,6 +99,9 @@ static int lguest_fd; /* a per-cpu variable indicating whose vcpu is currently running */ static unsigned int __thread cpu_id; +/* 5 bit device number in the PCI_CONFIG_ADDR => 32 only */ +#define MAX_PCI_DEVICES 32 + /* This is our list of devices. */ struct device_list { /* Counter to assign interrupt numbers. */ @@ -114,6 +117,9 @@ struct device_list { struct device *dev; /* And a pointer to the last device for easy append. */ struct device *lastdev; + + /* PCI devices. */ + struct device *pci[MAX_PCI_DEVICES]; }; /* The list of Guest devices, based on command line arguments. */ @@ -140,6 +146,10 @@ struct device { /* Is it operational */ bool running; + /* PCI MMIO resources (all in BAR0) */ + size_t mmio_size; + u32 mmio_addr; + /* Device-specific data. */ void *priv; }; @@ -1197,6 +1207,77 @@ static void setreg_off(size_t offset, u32 val) err(1, "Setting register %u", offset); } +/* Get register by instruction encoding */ +static u32 getreg_num(unsigned regnum, u32 mask) +{ + /* 8 bit ops use regnums 4-7 for high parts of word */ + if (mask == 0xFF && (regnum & 0x4)) + return getreg_num(regnum & 0x3, 0xFFFF) >> 8; + + switch (regnum) { + case 0: return getreg(eax) & mask; + case 1: return getreg(ecx) & mask; + case 2: return getreg(edx) & mask; + case 3: return getreg(ebx) & mask; + case 4: return getreg(esp) & mask; + case 5: return getreg(ebp) & mask; + case 6: return getreg(esi) & mask; + case 7: return getreg(edi) & mask; + } + abort(); +} + +/* Set register by instruction encoding */ +static void setreg_num(unsigned regnum, u32 val, u32 mask) +{ + /* Don't try to set bits out of range */ + assert(~(val & ~mask)); + + /* 8 bit ops use regnums 4-7 for high parts of word */ + if (mask == 0xFF && (regnum & 0x4)) { + /* Construct the 16 bits we want. */ + val = (val << 8) | getreg_num(regnum & 0x3, 0xFF); + setreg_num(regnum & 0x3, val, 0xFFFF); + return; + } + + switch (regnum) { + case 0: setreg(eax, val | (getreg(eax) & ~mask)); return; + case 1: setreg(ecx, val | (getreg(ecx) & ~mask)); return; + case 2: setreg(edx, val | (getreg(edx) & ~mask)); return; + case 3: setreg(ebx, val | (getreg(ebx) & ~mask)); return; + case 4: setreg(esp, val | (getreg(esp) & ~mask)); return; + case 5: setreg(ebp, val | (getreg(ebp) & ~mask)); return; + case 6: setreg(esi, val | (getreg(esi) & ~mask)); return; + case 7: setreg(edi, val | (getreg(edi) & ~mask)); return; + } + abort(); +} + +/* Get bytes of displacement appended to instruction, from r/m encoding */ +static u32 insn_displacement_len(u8 mod_reg_rm) +{ + /* Switch on the mod bits */ + switch (mod_reg_rm >> 6) { + case 0: + /* If mod == 0, and r/m == 101, 16-bit displacement follows */ + if ((mod_reg_rm & 0x7) == 0x5) + return 2; + /* Normally, mod == 0 means no literal displacement */ + return 0; + case 1: + /* One byte displacement */ + return 1; + case 2: + /* Four byte displacement */ + return 4; + case 3: + /* Register mode */ + return 0; + } + abort(); +} + static void emulate_insn(const u8 insn[]) { unsigned long args[] = { LHREQ_TRAP, 13 }; @@ -1310,6 +1391,88 @@ no_emulate: err(1, "Reinjecting trap 13 for fault at %#x", getreg(eip)); } +static struct device *find_mmio_region(unsigned long paddr, u32 *off) +{ + unsigned int i; + + for (i = 1; i < MAX_PCI_DEVICES; i++) { + struct device *d = devices.pci[i]; + + if (!d) + continue; + if (paddr < d->mmio_addr) + continue; + if (paddr >= d->mmio_addr + d->mmio_size) + continue; + *off = paddr - d->mmio_addr; + return d; + } + return NULL; +} + +static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) +{ +} + +static u32 emulate_mmio_read(struct device *d, u32 off, u32 mask) +{ + return 0xFFFFFFFF; +} + +static void emulate_mmio(unsigned long paddr, const u8 *insn) +{ + u32 val, off, mask = 0xFFFFFFFF, insnlen = 0; + struct device *d = find_mmio_region(paddr, &off); + unsigned long args[] = { LHREQ_TRAP, 14 }; + + if (!d) { + warnx("MMIO touching %#08lx (not a device)", paddr); + goto reinject; + } + + /* Prefix makes it a 16 bit op */ + if (insn[0] == 0x66) { + mask = 0xFFFF; + insnlen++; + } + + /* iowrite */ + if (insn[insnlen] == 0x89) { + /* Next byte is r/m byte: bits 3-5 are register. */ + val = getreg_num((insn[insnlen+1] >> 3) & 0x7, mask); + emulate_mmio_write(d, off, val, mask); + insnlen += 2 + insn_displacement_len(insn[insnlen+1]); + } else if (insn[insnlen] == 0x8b) { /* ioread */ + /* Next byte is r/m byte: bits 3-5 are register. */ + val = emulate_mmio_read(d, off, mask); + setreg_num((insn[insnlen+1] >> 3) & 0x7, val, mask); + insnlen += 2 + insn_displacement_len(insn[insnlen+1]); + } else if (insn[0] == 0x88) { /* 8-bit iowrite */ + mask = 0xff; + /* Next byte is r/m byte: bits 3-5 are register. */ + val = getreg_num((insn[1] >> 3) & 0x7, mask); + emulate_mmio_write(d, off, val, mask); + insnlen = 2 + insn_displacement_len(insn[1]); + } else if (insn[0] == 0x8a) { /* 8-bit ioread */ + mask = 0xff; + val = emulate_mmio_read(d, off, mask); + setreg_num((insn[1] >> 3) & 0x7, val, mask); + insnlen = 2 + insn_displacement_len(insn[1]); + } else { + warnx("Unknown MMIO instruction touching %#08lx:" + " %02x %02x %02x %02x at %u", + paddr, insn[0], insn[1], insn[2], insn[3], getreg(eip)); + reinject: + /* Inject trap into Guest. */ + if (write(lguest_fd, args, sizeof(args)) < 0) + err(1, "Reinjecting trap 14 for fault at %#x", + getreg(eip)); + return; + } + + /* Finally, we've "done" the instruction, so move past it. */ + setreg(eip, getreg(eip) + insnlen); +} /*L:190 * Device Setup @@ -2004,6 +2167,10 @@ static void __attribute__((noreturn)) run_guest(void) verbose("Emulating instruction at %#x\n", getreg(eip)); emulate_insn(notify.insn); + } else if (notify.trap == 14) { + verbose("Emulating MMIO at %#x\n", + getreg(eip)); + emulate_mmio(notify.addr, notify.insn); } else errx(1, "Unknown trap %i addr %#08x\n", notify.trap, notify.addr); -- cgit v1.2.3 From d7fbf6e95e2c5e7ef97c463a97499d7a2341fb09 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 11 Feb 2015 15:15:11 +1030 Subject: lguest: add PCI config space emulation to example launcher. This handles ioport 0xCF8 and 0xCFC accesses, which are used to read/write PCI device config space. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 216 ++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 211 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index e52a3571076a..0f29657fc065 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -42,6 +42,7 @@ #include #include #include +#include #ifndef VIRTIO_F_ANY_LAYOUT #define VIRTIO_F_ANY_LAYOUT 27 @@ -125,6 +126,21 @@ struct device_list { /* The list of Guest devices, based on command line arguments. */ static struct device_list devices; +/* This is the layout (little-endian) of the PCI config space. */ +struct pci_config { + u16 vendor_id, device_id; + u16 command, status; + u8 revid, prog_if, subclass, class; + u8 cacheline_size, lat_timer, header_type, bist; + u32 bar[6]; + u32 cardbus_cis_ptr; + u16 subsystem_vendor_id, subsystem_device_id; + u32 expansion_rom_addr; + u8 capabilities, reserved1[3]; + u32 reserved2; + u8 irq_line, irq_pin, min_grant, max_latency; +}; + /* The device structure describes a single device. */ struct device { /* The linked-list pointer. */ @@ -146,6 +162,15 @@ struct device { /* Is it operational */ bool running; + /* PCI configuration */ + union { + struct pci_config config; + u32 config_words[sizeof(struct pci_config) / sizeof(u32)]; + }; + + /* Device-specific config hangs off the end of this. */ + struct virtio_pci_mmio *mmio; + /* PCI MMIO resources (all in BAR0) */ size_t mmio_size; u32 mmio_addr; @@ -1173,6 +1198,169 @@ static void handle_output(unsigned long addr) strnlen(from_guest_phys(addr), guest_limit - addr)); } +/*L:217 + * We do PCI. This is mainly done to let us test the kernel virtio PCI + * code. + */ + +/* The IO ports used to read the PCI config space. */ +#define PCI_CONFIG_ADDR 0xCF8 +#define PCI_CONFIG_DATA 0xCFC + +/* + * Not really portable, but does help readability: this is what the Guest + * writes to the PCI_CONFIG_ADDR IO port. + */ +union pci_config_addr { + struct { + unsigned mbz: 2; + unsigned offset: 6; + unsigned funcnum: 3; + unsigned devnum: 5; + unsigned busnum: 8; + unsigned reserved: 7; + unsigned enabled : 1; + } bits; + u32 val; +}; + +/* + * We cache what they wrote to the address port, so we know what they're + * talking about when they access the data port. + */ +static union pci_config_addr pci_config_addr; + +static struct device *find_pci_device(unsigned int index) +{ + return devices.pci[index]; +} + +/* PCI can do 1, 2 and 4 byte reads; we handle that here. */ +static void ioread(u16 off, u32 v, u32 mask, u32 *val) +{ + assert(off < 4); + assert(mask == 0xFF || mask == 0xFFFF || mask == 0xFFFFFFFF); + *val = (v >> (off * 8)) & mask; +} + +/* PCI can do 1, 2 and 4 byte writes; we handle that here. */ +static void iowrite(u16 off, u32 v, u32 mask, u32 *dst) +{ + assert(off < 4); + assert(mask == 0xFF || mask == 0xFFFF || mask == 0xFFFFFFFF); + *dst &= ~(mask << (off * 8)); + *dst |= (v & mask) << (off * 8); +} + +/* + * Where PCI_CONFIG_DATA accesses depends on the previous write to + * PCI_CONFIG_ADDR. + */ +static struct device *dev_and_reg(u32 *reg) +{ + if (!pci_config_addr.bits.enabled) + return NULL; + + if (pci_config_addr.bits.funcnum != 0) + return NULL; + + if (pci_config_addr.bits.busnum != 0) + return NULL; + + if (pci_config_addr.bits.offset * 4 >= sizeof(struct pci_config)) + return NULL; + + *reg = pci_config_addr.bits.offset; + return find_pci_device(pci_config_addr.bits.devnum); +} + +/* Is this accessing the PCI config address port?. */ +static bool is_pci_addr_port(u16 port) +{ + return port >= PCI_CONFIG_ADDR && port < PCI_CONFIG_ADDR + 4; +} + +static bool pci_addr_iowrite(u16 port, u32 mask, u32 val) +{ + iowrite(port - PCI_CONFIG_ADDR, val, mask, + &pci_config_addr.val); + verbose("PCI%s: %#x/%x: bus %u dev %u func %u reg %u\n", + pci_config_addr.bits.enabled ? "" : " DISABLED", + val, mask, + pci_config_addr.bits.busnum, + pci_config_addr.bits.devnum, + pci_config_addr.bits.funcnum, + pci_config_addr.bits.offset); + return true; +} + +static void pci_addr_ioread(u16 port, u32 mask, u32 *val) +{ + ioread(port - PCI_CONFIG_ADDR, pci_config_addr.val, mask, val); +} + +/* Is this accessing the PCI config data port?. */ +static bool is_pci_data_port(u16 port) +{ + return port >= PCI_CONFIG_DATA && port < PCI_CONFIG_DATA + 4; +} + +static bool pci_data_iowrite(u16 port, u32 mask, u32 val) +{ + u32 reg, portoff; + struct device *d = dev_and_reg(®); + + /* Complain if they don't belong to a device. */ + if (!d) + return false; + + /* They can do 1 byte writes, etc. */ + portoff = port - PCI_CONFIG_DATA; + + /* + * PCI uses a weird way to determine the BAR size: the OS + * writes all 1's, and sees which ones stick. + */ + if (&d->config_words[reg] == &d->config.bar[0]) { + int i; + + iowrite(portoff, val, mask, &d->config.bar[0]); + for (i = 0; (1 << i) < d->mmio_size; i++) + d->config.bar[0] &= ~(1 << i); + return true; + } else if ((&d->config_words[reg] > &d->config.bar[0] + && &d->config_words[reg] <= &d->config.bar[6]) + || &d->config_words[reg] == &d->config.expansion_rom_addr) { + /* Allow writing to any other BAR, or expansion ROM */ + iowrite(portoff, val, mask, &d->config_words[reg]); + return true; + /* We let them overide latency timer and cacheline size */ + } else if (&d->config_words[reg] == (void *)&d->config.cacheline_size) { + /* Only let them change the first two fields. */ + if (mask == 0xFFFFFFFF) + mask = 0xFFFF; + iowrite(portoff, val, mask, &d->config_words[reg]); + return true; + } else if (&d->config_words[reg] == (void *)&d->config.command + && mask == 0xFFFF) { + /* Ignore command writes. */ + return true; + } + + /* Complain about other writes. */ + return false; +} + +static void pci_data_ioread(u16 port, u32 mask, u32 *val) +{ + u32 reg; + struct device *d = dev_and_reg(®); + + if (!d) + return; + ioread(port - PCI_CONFIG_DATA, d->config_words[reg], mask, val); +} + /*L:216 * This is where we emulate a handful of Guest instructions. It's ugly * and we used to do it in the kernel but it grew over time. @@ -1284,7 +1472,7 @@ static void emulate_insn(const u8 insn[]) unsigned int insnlen = 0, in = 0, small_operand = 0, byte_access; unsigned int eax, port, mask; /* - * We always return all-ones on IO port reads, which traditionally + * Default is to return all-ones on IO port reads, which traditionally * means "there's nothing there". */ u32 val = 0xFFFFFFFF; @@ -1359,10 +1547,6 @@ static void emulate_insn(const u8 insn[]) else mask = 0xFFFFFFFF; - /* This is the PS/2 keyboard status; 1 means ready for output */ - if (port == 0x64) - val = 1; - /* * If it was an "IN" instruction, they expect the result to be read * into %eax, so we change %eax. @@ -1370,12 +1554,30 @@ static void emulate_insn(const u8 insn[]) eax = getreg(eax); if (in) { + /* This is the PS/2 keyboard status; 1 means ready for output */ + if (port == 0x64) + val = 1; + else if (is_pci_addr_port(port)) + pci_addr_ioread(port, mask, &val); + else if (is_pci_data_port(port)) + pci_data_ioread(port, mask, &val); + /* Clear the bits we're about to read */ eax &= ~mask; /* Copy bits in from val. */ eax |= val & mask; /* Now update the register. */ setreg(eax, eax); + } else { + if (is_pci_addr_port(port)) { + if (!pci_addr_iowrite(port, mask, eax)) + goto bad_io; + } else if (is_pci_data_port(port)) { + if (!pci_data_iowrite(port, mask, eax)) + goto bad_io; + } + /* There are many other ports, eg. CMOS clock, serial + * and parallel ports, so we ignore them all. */ } verbose("IO %s of %x to %u: %#08x\n", @@ -1385,6 +1587,10 @@ skip_insn: setreg(eip, getreg(eip) + insnlen); return; +bad_io: + warnx("Attempt to %s port %u (%#x mask)", + in ? "read from" : "write to", port, mask); + no_emulate: /* Inject trap into Guest. */ if (write(lguest_fd, args, sizeof(args)) < 0) -- cgit v1.2.3 From 93153077107ecfbf35a3412f6220521e8d8c14ba Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 11 Feb 2015 15:15:11 +1030 Subject: lguest: implement virtio-PCI MMIO accesses. For each device, We need to include the vendor capabilities to demark where virtio common, notification and ISR regions are (we put them all in BAR0). We need to handle the switching of the virtqueues using the accessors. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 492 +++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 490 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index 0f29657fc065..eafdaf2a14c4 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -63,12 +63,16 @@ typedef uint16_t u16; typedef uint8_t u8; /*:*/ -#include +#define VIRTIO_PCI_NO_LEGACY + +/* Use in-kernel ones, which defines VIRTIO_F_VERSION_1 */ +#include "../../include/uapi/linux/virtio_config.h" #include #include #include #include #include +#include "../../include/uapi/linux/virtio_pci.h" #include #include "../../include/linux/lguest_launcher.h" @@ -126,6 +130,19 @@ struct device_list { /* The list of Guest devices, based on command line arguments. */ static struct device_list devices; +struct virtio_pci_cfg_cap { + struct virtio_pci_cap cap; + u32 window; /* Data for BAR access. */ +}; + +struct virtio_pci_mmio { + struct virtio_pci_common_cfg cfg; + u16 notify; + u8 isr; + u8 padding; + /* Device-specific configuration follows this. */ +}; + /* This is the layout (little-endian) of the PCI config space. */ struct pci_config { u16 vendor_id, device_id; @@ -139,6 +156,14 @@ struct pci_config { u8 capabilities, reserved1[3]; u32 reserved2; u8 irq_line, irq_pin, min_grant, max_latency; + + /* Now, this is the linked capability list. */ + struct virtio_pci_cap common; + struct virtio_pci_notify_cap notify; + struct virtio_pci_cap isr; + struct virtio_pci_cap device; + /* FIXME: Implement this! */ + struct virtio_pci_cfg_cap cfg_access; }; /* The device structure describes a single device. */ @@ -168,6 +193,9 @@ struct device { u32 config_words[sizeof(struct pci_config) / sizeof(u32)]; }; + /* Features we offer, and those accepted. */ + u64 features, features_accepted; + /* Device-specific config hangs off the end of this. */ struct virtio_pci_mmio *mmio; @@ -192,6 +220,9 @@ struct virtqueue { /* The actual ring of buffers. */ struct vring vring; + /* The information about this virtqueue (we only use queue_size on) */ + struct virtio_pci_common_cfg pci_config; + /* Last available index we saw. */ u16 last_avail_idx; @@ -680,6 +711,10 @@ static void trigger_irq(struct virtqueue *vq) return; } + /* For a PCI device, set isr to 1 (queue interrupt pending) */ + if (vq->dev->mmio) + vq->dev->mmio->isr = 0x1; + /* Send the Guest an interrupt tell them we used something up. */ if (write(lguest_fd, buf, sizeof(buf)) != 0) err(1, "Triggering irq %i", vq->config.irq); @@ -1616,13 +1651,264 @@ static struct device *find_mmio_region(unsigned long paddr, u32 *off) return NULL; } +/* FIXME: Use vq array. */ +static struct virtqueue *vq_by_num(struct device *d, u32 num) +{ + struct virtqueue *vq = d->vq; + + while (num-- && vq) + vq = vq->next; + + return vq; +} + +static void save_vq_config(const struct virtio_pci_common_cfg *cfg, + struct virtqueue *vq) +{ + vq->pci_config = *cfg; +} + +static void restore_vq_config(struct virtio_pci_common_cfg *cfg, + struct virtqueue *vq) +{ + /* Only restore the per-vq part */ + size_t off = offsetof(struct virtio_pci_common_cfg, queue_size); + + memcpy((void *)cfg + off, (void *)&vq->pci_config + off, + sizeof(*cfg) - off); +} + +/* + * When they enable the virtqueue, we check that their setup is valid. + */ +static void enable_virtqueue(struct device *d, struct virtqueue *vq) +{ + /* + * Create stack for thread. Since the stack grows upwards, we point + * the stack pointer to the end of this region. + */ + char *stack = malloc(32768); + + /* Because lguest is 32 bit, all the descriptor high bits must be 0 */ + if (vq->pci_config.queue_desc_hi + || vq->pci_config.queue_avail_hi + || vq->pci_config.queue_used_hi) + errx(1, "%s: invalid 64-bit queue address", d->name); + + /* Initialize the virtqueue and check they're all in range. */ + vq->vring.num = vq->pci_config.queue_size; + vq->vring.desc = check_pointer(vq->pci_config.queue_desc_lo, + sizeof(*vq->vring.desc) * vq->vring.num); + vq->vring.avail = check_pointer(vq->pci_config.queue_avail_lo, + sizeof(*vq->vring.avail) + + (sizeof(vq->vring.avail->ring[0]) + * vq->vring.num)); + vq->vring.used = check_pointer(vq->pci_config.queue_used_lo, + sizeof(*vq->vring.used) + + (sizeof(vq->vring.used->ring[0]) + * vq->vring.num)); + + + /* Create a zero-initialized eventfd. */ + vq->eventfd = eventfd(0, 0); + if (vq->eventfd < 0) + err(1, "Creating eventfd"); + + /* + * CLONE_VM: because it has to access the Guest memory, and SIGCHLD so + * we get a signal if it dies. + */ + vq->thread = clone(do_thread, stack + 32768, CLONE_VM | SIGCHLD, vq); + if (vq->thread == (pid_t)-1) + err(1, "Creating clone"); +} + +static void reset_pci_device(struct device *dev) +{ + /* FIXME */ +} + static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) { + struct virtqueue *vq; + + switch (off) { + case offsetof(struct virtio_pci_mmio, cfg.device_feature_select): + if (val == 0) + d->mmio->cfg.device_feature = d->features; + else if (val == 1) + d->mmio->cfg.device_feature = (d->features >> 32); + else + d->mmio->cfg.device_feature = 0; + goto write_through32; + case offsetof(struct virtio_pci_mmio, cfg.guest_feature_select): + if (val > 1) + errx(1, "%s: Unexpected driver select %u", + d->name, val); + goto write_through32; + case offsetof(struct virtio_pci_mmio, cfg.guest_feature): + if (d->mmio->cfg.guest_feature_select == 0) { + d->features_accepted &= ~((u64)0xFFFFFFFF); + d->features_accepted |= val; + } else { + assert(d->mmio->cfg.guest_feature_select == 1); + d->features_accepted &= ((u64)0xFFFFFFFF << 32); + d->features_accepted |= ((u64)val) << 32; + } + if (d->features_accepted & ~d->features) + errx(1, "%s: over-accepted features %#llx of %#llx", + d->name, d->features_accepted, d->features); + goto write_through32; + case offsetof(struct virtio_pci_mmio, cfg.device_status): + verbose("%s: device status -> %#x\n", d->name, val); + if (val == 0) + reset_pci_device(d); + goto write_through8; + case offsetof(struct virtio_pci_mmio, cfg.queue_select): + vq = vq_by_num(d, val); + /* Out of range? Return size 0 */ + if (!vq) { + d->mmio->cfg.queue_size = 0; + goto write_through16; + } + /* Save registers for old vq, if it was a valid vq */ + if (d->mmio->cfg.queue_size) + save_vq_config(&d->mmio->cfg, + vq_by_num(d, d->mmio->cfg.queue_select)); + /* Restore the registers for the queue they asked for */ + restore_vq_config(&d->mmio->cfg, vq); + goto write_through16; + case offsetof(struct virtio_pci_mmio, cfg.queue_size): + if (val & (val-1)) + errx(1, "%s: invalid queue size %u\n", d->name, val); + if (d->mmio->cfg.queue_enable) + errx(1, "%s: changing queue size on live device", + d->name); + goto write_through16; + case offsetof(struct virtio_pci_mmio, cfg.queue_msix_vector): + errx(1, "%s: attempt to set MSIX vector to %u", + d->name, val); + case offsetof(struct virtio_pci_mmio, cfg.queue_enable): + if (val != 1) + errx(1, "%s: setting queue_enable to %u", d->name, val); + d->mmio->cfg.queue_enable = val; + save_vq_config(&d->mmio->cfg, + vq_by_num(d, d->mmio->cfg.queue_select)); + enable_virtqueue(d, vq_by_num(d, d->mmio->cfg.queue_select)); + goto write_through16; + case offsetof(struct virtio_pci_mmio, cfg.queue_notify_off): + errx(1, "%s: attempt to write to queue_notify_off", d->name); + case offsetof(struct virtio_pci_mmio, cfg.queue_desc_lo): + case offsetof(struct virtio_pci_mmio, cfg.queue_desc_hi): + case offsetof(struct virtio_pci_mmio, cfg.queue_avail_lo): + case offsetof(struct virtio_pci_mmio, cfg.queue_avail_hi): + case offsetof(struct virtio_pci_mmio, cfg.queue_used_lo): + case offsetof(struct virtio_pci_mmio, cfg.queue_used_hi): + if (d->mmio->cfg.queue_enable) + errx(1, "%s: changing queue on live device", + d->name); + goto write_through32; + case offsetof(struct virtio_pci_mmio, notify): + vq = vq_by_num(d, val); + if (!vq) + errx(1, "Invalid vq notification on %u", val); + /* Notify the process handling this vq by adding 1 to eventfd */ + write(vq->eventfd, "\1\0\0\0\0\0\0\0", 8); + goto write_through16; + case offsetof(struct virtio_pci_mmio, isr): + errx(1, "%s: Unexpected write to isr", d->name); + default: + errx(1, "%s: Unexpected write to offset %u", d->name, off); + } + +write_through32: + if (mask != 0xFFFFFFFF) { + errx(1, "%s: non-32-bit write to offset %u (%#x)", + d->name, off, getreg(eip)); + return; + } + memcpy((char *)d->mmio + off, &val, 4); + return; + +write_through16: + if (mask != 0xFFFF) + errx(1, "%s: non-16-bit (%#x) write to offset %u (%#x)", + d->name, mask, off, getreg(eip)); + memcpy((char *)d->mmio + off, &val, 2); + return; + +write_through8: + if (mask != 0xFF) + errx(1, "%s: non-8-bit write to offset %u (%#x)", + d->name, off, getreg(eip)); + memcpy((char *)d->mmio + off, &val, 1); + return; } static u32 emulate_mmio_read(struct device *d, u32 off, u32 mask) { - return 0xFFFFFFFF; + u8 isr; + u32 val = 0; + + switch (off) { + case offsetof(struct virtio_pci_mmio, cfg.device_feature_select): + case offsetof(struct virtio_pci_mmio, cfg.device_feature): + case offsetof(struct virtio_pci_mmio, cfg.guest_feature_select): + case offsetof(struct virtio_pci_mmio, cfg.guest_feature): + goto read_through32; + case offsetof(struct virtio_pci_mmio, cfg.msix_config): + errx(1, "%s: read of msix_config", d->name); + case offsetof(struct virtio_pci_mmio, cfg.num_queues): + goto read_through16; + case offsetof(struct virtio_pci_mmio, cfg.device_status): + case offsetof(struct virtio_pci_mmio, cfg.config_generation): + goto read_through8; + case offsetof(struct virtio_pci_mmio, notify): + goto read_through16; + case offsetof(struct virtio_pci_mmio, isr): + if (mask != 0xFF) + errx(1, "%s: non-8-bit read from offset %u (%#x)", + d->name, off, getreg(eip)); + /* Read resets the isr */ + isr = d->mmio->isr; + d->mmio->isr = 0; + return isr; + case offsetof(struct virtio_pci_mmio, padding): + errx(1, "%s: read from padding (%#x)", + d->name, getreg(eip)); + default: + /* Read from device config space, beware unaligned overflow */ + if (off > d->mmio_size - 4) + errx(1, "%s: read past end (%#x)", + d->name, getreg(eip)); + if (mask == 0xFFFFFFFF) + goto read_through32; + else if (mask == 0xFFFF) + goto read_through16; + else + goto read_through8; + } + +read_through32: + if (mask != 0xFFFFFFFF) + errx(1, "%s: non-32-bit read to offset %u (%#x)", + d->name, off, getreg(eip)); + memcpy(&val, (char *)d->mmio + off, 4); + return val; + +read_through16: + if (mask != 0xFFFF) + errx(1, "%s: non-16-bit read to offset %u (%#x)", + d->name, off, getreg(eip)); + memcpy(&val, (char *)d->mmio + off, 2); + return val; + +read_through8: + if (mask != 0xFF) + errx(1, "%s: non-8-bit read to offset %u (%#x)", + d->name, off, getreg(eip)); + memcpy(&val, (char *)d->mmio + off, 1); + return val; } static void emulate_mmio(unsigned long paddr, const u8 *insn) @@ -1783,6 +2069,42 @@ static void add_virtqueue(struct device *dev, unsigned int num_descs, *i = vq; } +static void add_pci_virtqueue(struct device *dev, + void (*service)(struct virtqueue *)) +{ + struct virtqueue **i, *vq = malloc(sizeof(*vq)); + + /* Initialize the virtqueue */ + vq->next = NULL; + vq->last_avail_idx = 0; + vq->dev = dev; + + /* + * This is the routine the service thread will run, and its Process ID + * once it's running. + */ + vq->service = service; + vq->thread = (pid_t)-1; + + /* Initialize the configuration. */ + vq->pci_config.queue_size = VIRTQUEUE_NUM; + vq->pci_config.queue_enable = 0; + vq->pci_config.queue_notify_off = 0; + + /* Add one to the number of queues */ + vq->dev->mmio->cfg.num_queues++; + + /* FIXME: Do irq per virtqueue, not per device. */ + vq->config.irq = vq->dev->config.irq_line; + + /* + * Add to tail of list, so dev->vq is first vq, dev->vq->next is + * second. + */ + for (i = &dev->vq; *i; i = &(*i)->next); + *i = vq; +} + /* * The first half of the feature bitmask is for us to advertise features. The * second half is for the Guest to accept features. @@ -1800,6 +2122,11 @@ static void add_feature(struct device *dev, unsigned bit) features[bit / CHAR_BIT] |= (1 << (bit % CHAR_BIT)); } +static void add_pci_feature(struct device *dev, unsigned bit) +{ + dev->features |= (1ULL << bit); +} + /* * This routine sets the configuration fields for an existing device's * descriptor. It only works for the last device, but that's OK because that's @@ -1819,6 +2146,139 @@ static void set_config(struct device *dev, unsigned len, const void *conf) assert(dev->desc->config_len == len); } +/* For devices with no config. */ +static void no_device_config(struct device *dev) +{ + dev->mmio_addr = get_mmio_region(dev->mmio_size); + + dev->config.bar[0] = dev->mmio_addr; + /* Bottom 4 bits must be zero */ + assert(~(dev->config.bar[0] & 0xF)); +} + +/* This puts the device config into BAR0 */ +static void set_device_config(struct device *dev, const void *conf, size_t len) +{ + /* Set up BAR 0 */ + dev->mmio_size += len; + dev->mmio = realloc(dev->mmio, dev->mmio_size); + memcpy(dev->mmio + 1, conf, len); + + /* Hook up device cfg */ + dev->config.cfg_access.cap.cap_next + = offsetof(struct pci_config, device); + + /* Fix up device cfg field length. */ + dev->config.device.length = len; + + /* The rest is the same as the no-config case */ + no_device_config(dev); +} + +static void init_cap(struct virtio_pci_cap *cap, size_t caplen, int type, + size_t bar_offset, size_t bar_bytes, u8 next) +{ + cap->cap_vndr = PCI_CAP_ID_VNDR; + cap->cap_next = next; + cap->cap_len = caplen; + cap->cfg_type = type; + cap->bar = 0; + memset(cap->padding, 0, sizeof(cap->padding)); + cap->offset = bar_offset; + cap->length = bar_bytes; +} + +/* + * This sets up the pci_config structure, as defined in the virtio 1.0 + * standard (and PCI standard). + */ +static void init_pci_config(struct pci_config *pci, u16 type, + u8 class, u8 subclass) +{ + size_t bar_offset, bar_len; + + /* Save typing: most thing are happy being zero. */ + memset(pci, 0, sizeof(*pci)); + + /* 4.1.2.1: Devices MUST have the PCI Vendor ID 0x1AF4 */ + pci->vendor_id = 0x1AF4; + /* 4.1.2.1: ... PCI Device ID calculated by adding 0x1040 ... */ + pci->device_id = 0x1040 + type; + + /* + * PCI have specific codes for different types of devices. + * Linux doesn't care, but it's a good clue for people looking + * at the device. + * + * eg : + * VIRTIO_ID_CONSOLE: class = 0x07, subclass = 0x00 + * VIRTIO_ID_NET: class = 0x02, subclass = 0x00 + * VIRTIO_ID_BLOCK: class = 0x01, subclass = 0x80 + * VIRTIO_ID_RNG: class = 0xff, subclass = 0 + */ + pci->class = class; + pci->subclass = subclass; + + /* + * 4.1.2.1 Non-transitional devices SHOULD have a PCI Revision + * ID of 1 or higher + */ + pci->revid = 1; + + /* + * 4.1.2.1 Non-transitional devices SHOULD have a PCI + * Subsystem Device ID of 0x40 or higher. + */ + pci->subsystem_device_id = 0x40; + + /* We use our dummy interrupt controller, and irq_line is the irq */ + pci->irq_line = devices.next_irq++; + pci->irq_pin = 0; + + /* Support for extended capabilities. */ + pci->status = (1 << 4); + + /* Link them in. */ + pci->capabilities = offsetof(struct pci_config, common); + + bar_offset = offsetof(struct virtio_pci_mmio, cfg); + bar_len = sizeof(((struct virtio_pci_mmio *)0)->cfg); + init_cap(&pci->common, sizeof(pci->common), VIRTIO_PCI_CAP_COMMON_CFG, + bar_offset, bar_len, + offsetof(struct pci_config, notify)); + + bar_offset += bar_len; + bar_len = sizeof(((struct virtio_pci_mmio *)0)->notify); + /* FIXME: Use a non-zero notify_off, for per-queue notification? */ + init_cap(&pci->notify.cap, sizeof(pci->notify), + VIRTIO_PCI_CAP_NOTIFY_CFG, + bar_offset, bar_len, + offsetof(struct pci_config, isr)); + + bar_offset += bar_len; + bar_len = sizeof(((struct virtio_pci_mmio *)0)->isr); + init_cap(&pci->isr, sizeof(pci->isr), + VIRTIO_PCI_CAP_ISR_CFG, + bar_offset, bar_len, + offsetof(struct pci_config, cfg_access)); + + /* This doesn't have any presence in the BAR */ + init_cap(&pci->cfg_access.cap, sizeof(pci->cfg_access), + VIRTIO_PCI_CAP_PCI_CFG, + 0, 0, 0); + + bar_offset += bar_len + sizeof(((struct virtio_pci_mmio *)0)->padding); + assert(bar_offset == sizeof(struct virtio_pci_mmio)); + + /* + * This gets sewn in and length set in set_device_config(). + * Some devices don't have a device configuration interface, so + * we never expose this if we don't call set_device_config(). + */ + init_cap(&pci->device, sizeof(pci->device), VIRTIO_PCI_CAP_DEVICE_CFG, + bar_offset, 0, 0); +} + /* * This routine does all the creation and setup of a new device, including * calling new_dev_desc() to allocate the descriptor and device memory. We @@ -1854,6 +2314,34 @@ static struct device *new_device(const char *name, u16 type) return dev; } +static struct device *new_pci_device(const char *name, u16 type, + u8 class, u8 subclass) +{ + struct device *dev = malloc(sizeof(*dev)); + + /* Now we populate the fields one at a time. */ + dev->desc = NULL; + dev->name = name; + dev->vq = NULL; + dev->feature_len = 0; + dev->num_vq = 0; + dev->running = false; + dev->next = NULL; + dev->mmio_size = sizeof(struct virtio_pci_mmio); + dev->mmio = calloc(1, dev->mmio_size); + dev->features = (u64)1 << VIRTIO_F_VERSION_1; + dev->features_accepted = 0; + + if (devices.device_num + 1 >= 32) + errx(1, "Can only handle 31 PCI devices"); + + init_pci_config(&dev->config, type, class, subclass); + assert(!devices.pci[devices.device_num+1]); + devices.pci[++devices.device_num] = dev; + + return dev; +} + /* * Our first setup routine is the console. It's a fairly simple device, but * UNIX tty handling makes it uglier than it could be. -- cgit v1.2.3 From 3e0e5f2640d3b8f8f958e72f1577f1e323e11da6 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 11 Feb 2015 15:15:11 +1030 Subject: lguest: fix failure to find linux/virtio_types.h We want to use the local kernel headers, but -I../../include/uapi leads us into a world of hurt. Instead we create a dummy include/ dir with symlinks. If we just use #include "../../include/uapi/linux/virtio_blk.h" we get: ../../include/uapi/linux/virtio_blk.h:31:32: fatal error: linux/virtio_types.h: No such file or directory #include Signed-off-by: Rusty Russell --- tools/lguest/Makefile | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/lguest/Makefile b/tools/lguest/Makefile index 97bca4871ea3..a107b5e4da13 100644 --- a/tools/lguest/Makefile +++ b/tools/lguest/Makefile @@ -1,7 +1,13 @@ # This creates the demonstration utility "lguest" which runs a Linux guest. -CFLAGS:=-m32 -Wall -Wmissing-declarations -Wmissing-prototypes -O3 -U_FORTIFY_SOURCE +CFLAGS:=-m32 -Wall -Wmissing-declarations -Wmissing-prototypes -O3 -U_FORTIFY_SOURCE -Iinclude all: lguest +include/linux/virtio_types.h: ../../include/uapi/linux/virtio_types.h + mkdir -p include/linux 2>&1 || true + ln -sf ../../../../include/uapi/linux/virtio_types.h $@ + +lguest: include/linux/virtio_types.h + clean: rm -f lguest -- cgit v1.2.3 From 8e70946943961cf5bb9be3a0cf12bd0da7a7cb0d Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 11 Feb 2015 15:15:12 +1030 Subject: lguest: add a dummy PCI host bridge. Otherwise Linux fails to find the bus. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index eafdaf2a14c4..c8930bc5ce99 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -1238,6 +1238,17 @@ static void handle_output(unsigned long addr) * code. */ +/* Linux expects a PCI host bridge: ours is a dummy, and first on the bus. */ +static struct device pci_host_bridge; + +static void init_pci_host_bridge(void) +{ + pci_host_bridge.name = "PCI Host Bridge"; + pci_host_bridge.config.class = 0x06; /* bridge */ + pci_host_bridge.config.subclass = 0; /* host bridge */ + devices.pci[0] = &pci_host_bridge; +} + /* The IO ports used to read the PCI config space. */ #define PCI_CONFIG_ADDR 0xCF8 #define PCI_CONFIG_DATA 0xCFC @@ -3007,6 +3018,9 @@ int main(int argc, char *argv[]) /* We always have a console device */ setup_console(); + /* Initialize the (fake) PCI host bridge device. */ + init_pci_host_bridge(); + /* Now we load the kernel */ start = load_kernel(open_or_die(argv[optind+1], O_RDONLY)); -- cgit v1.2.3 From 5051654764d55a101747b5b2a695bcecae75fa4c Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 11 Feb 2015 15:15:12 +1030 Subject: lguest: Convert block device to virtio 1.0 PCI. We remove SCSI support (which was removed for 1.0) and VIRTIO_BLK_F_FLUSH feature flag (removed too, since it's compulsory for 1.0). The rest is mainly mechanical. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 30 +++++++++--------------------- 1 file changed, 9 insertions(+), 21 deletions(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index c8930bc5ce99..d4a79f6ddfbd 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -64,11 +64,12 @@ typedef uint8_t u8; /*:*/ #define VIRTIO_PCI_NO_LEGACY +#define VIRTIO_BLK_NO_LEGACY /* Use in-kernel ones, which defines VIRTIO_F_VERSION_1 */ #include "../../include/uapi/linux/virtio_config.h" #include -#include +#include "../../include/uapi/linux/virtio_blk.h" #include #include #include @@ -2224,7 +2225,6 @@ static void init_pci_config(struct pci_config *pci, u16 type, * eg : * VIRTIO_ID_CONSOLE: class = 0x07, subclass = 0x00 * VIRTIO_ID_NET: class = 0x02, subclass = 0x00 - * VIRTIO_ID_BLOCK: class = 0x01, subclass = 0x80 * VIRTIO_ID_RNG: class = 0xff, subclass = 0 */ pci->class = class; @@ -2663,15 +2663,7 @@ static void blk_request(struct virtqueue *vq) */ off = out.sector * 512; - /* - * In general the virtio block driver is allowed to try SCSI commands. - * It'd be nice if we supported eject, for example, but we don't. - */ - if (out.type & VIRTIO_BLK_T_SCSI_CMD) { - fprintf(stderr, "Scsi commands unsupported\n"); - *in = VIRTIO_BLK_S_UNSUPP; - wlen = sizeof(*in); - } else if (out.type & VIRTIO_BLK_T_OUT) { + if (out.type & VIRTIO_BLK_T_OUT) { /* * Write * @@ -2735,11 +2727,11 @@ static void setup_block_file(const char *filename) struct vblk_info *vblk; struct virtio_blk_config conf; - /* Creat the device. */ - dev = new_device("block", VIRTIO_ID_BLOCK); + /* Create the device. */ + dev = new_pci_device("block", VIRTIO_ID_BLOCK, 0x01, 0x80); /* The device has one virtqueue, where the Guest places requests. */ - add_virtqueue(dev, VIRTQUEUE_NUM, blk_request); + add_pci_virtqueue(dev, blk_request); /* Allocate the room for our own bookkeeping */ vblk = dev->priv = malloc(sizeof(*vblk)); @@ -2748,9 +2740,6 @@ static void setup_block_file(const char *filename) vblk->fd = open_or_die(filename, O_RDWR|O_LARGEFILE); vblk->len = lseek64(vblk->fd, 0, SEEK_END); - /* We support FLUSH. */ - add_feature(dev, VIRTIO_BLK_F_FLUSH); - /* Tell Guest how many sectors this device has. */ conf.capacity = cpu_to_le64(vblk->len / 512); @@ -2758,14 +2747,13 @@ static void setup_block_file(const char *filename) * Tell Guest not to put in too many descriptors at once: two are used * for the in and out elements. */ - add_feature(dev, VIRTIO_BLK_F_SEG_MAX); + add_pci_feature(dev, VIRTIO_BLK_F_SEG_MAX); conf.seg_max = cpu_to_le32(VIRTQUEUE_NUM - 2); - /* Don't try to put whole struct: we have 8 bit limit. */ - set_config(dev, offsetof(struct virtio_blk_config, geometry), &conf); + set_device_config(dev, &conf, sizeof(struct virtio_blk_config)); verbose("device %u: virtblock %llu sectors\n", - ++devices.device_num, le64_to_cpu(conf.capacity)); + devices.device_num, le64_to_cpu(conf.capacity)); } /*L:211 -- cgit v1.2.3 From bf6d40344d7006f29da1a2782f45188cdbbb0904 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 11 Feb 2015 15:16:01 +1030 Subject: lguest: Convert net device to virtio 1.0 PCI. The only real change here (other than using the PCI bus) is that we didn't negotiate VIRTIO_NET_F_MRG_RXBUF before, so the format of the packet header changed with virtio 1.0; we need TUNSETVNETHDRSZ on the tun fd to tell it about the extra two bytes. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 48 ++++++++++++++++++++++++++++-------------------- 1 file changed, 28 insertions(+), 20 deletions(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index d4a79f6ddfbd..b6c88a10a4c9 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -68,7 +68,7 @@ typedef uint8_t u8; /* Use in-kernel ones, which defines VIRTIO_F_VERSION_1 */ #include "../../include/uapi/linux/virtio_config.h" -#include +#include "../../include/uapi/linux/virtio_net.h" #include "../../include/uapi/linux/virtio_blk.h" #include #include @@ -2224,7 +2224,6 @@ static void init_pci_config(struct pci_config *pci, u16 type, * * eg : * VIRTIO_ID_CONSOLE: class = 0x07, subclass = 0x00 - * VIRTIO_ID_NET: class = 0x02, subclass = 0x00 * VIRTIO_ID_RNG: class = 0xff, subclass = 0 */ pci->class = class; @@ -2485,6 +2484,7 @@ static void configure_device(int fd, const char *tapif, u32 ipaddr) static int get_tun_device(char tapif[IFNAMSIZ]) { struct ifreq ifr; + int vnet_hdr_sz; int netfd; /* Start with this zeroed. Messy but sure. */ @@ -2512,6 +2512,18 @@ static int get_tun_device(char tapif[IFNAMSIZ]) */ ioctl(netfd, TUNSETNOCSUM, 1); + /* + * In virtio before 1.0 (aka legacy virtio), we added a 16-bit + * field at the end of the network header iff + * VIRTIO_NET_F_MRG_RXBUF was negotiated. For virtio 1.0, + * that became the norm, but we need to tell the tun device + * about our expanded header (which is called + * virtio_net_hdr_mrg_rxbuf in the legacy system). + */ + vnet_hdr_sz = sizeof(struct virtio_net_hdr_mrg_rxbuf); + if (ioctl(netfd, TUNSETVNETHDRSZ, &vnet_hdr_sz) != 0) + err(1, "Setting tun header size to %u", vnet_hdr_sz); + memcpy(tapif, ifr.ifr_name, IFNAMSIZ); return netfd; } @@ -2535,12 +2547,12 @@ static void setup_tun_net(char *arg) net_info->tunfd = get_tun_device(tapif); /* First we create a new network device. */ - dev = new_device("net", VIRTIO_ID_NET); + dev = new_pci_device("net", VIRTIO_ID_NET, 0x02, 0x00); dev->priv = net_info; /* Network devices need a recv and a send queue, just like console. */ - add_virtqueue(dev, VIRTQUEUE_NUM, net_input); - add_virtqueue(dev, VIRTQUEUE_NUM, net_output); + add_pci_virtqueue(dev, net_input); + add_pci_virtqueue(dev, net_output); /* * We need a socket to perform the magic network ioctls to bring up the @@ -2560,7 +2572,7 @@ static void setup_tun_net(char *arg) p = strchr(arg, ':'); if (p) { str2mac(p+1, conf.mac); - add_feature(dev, VIRTIO_NET_F_MAC); + add_pci_feature(dev, VIRTIO_NET_F_MAC); *p = '\0'; } @@ -2574,25 +2586,21 @@ static void setup_tun_net(char *arg) configure_device(ipfd, tapif, ip); /* Expect Guest to handle everything except UFO */ - add_feature(dev, VIRTIO_NET_F_CSUM); - add_feature(dev, VIRTIO_NET_F_GUEST_CSUM); - add_feature(dev, VIRTIO_NET_F_GUEST_TSO4); - add_feature(dev, VIRTIO_NET_F_GUEST_TSO6); - add_feature(dev, VIRTIO_NET_F_GUEST_ECN); - add_feature(dev, VIRTIO_NET_F_HOST_TSO4); - add_feature(dev, VIRTIO_NET_F_HOST_TSO6); - add_feature(dev, VIRTIO_NET_F_HOST_ECN); + add_pci_feature(dev, VIRTIO_NET_F_CSUM); + add_pci_feature(dev, VIRTIO_NET_F_GUEST_CSUM); + add_pci_feature(dev, VIRTIO_NET_F_GUEST_TSO4); + add_pci_feature(dev, VIRTIO_NET_F_GUEST_TSO6); + add_pci_feature(dev, VIRTIO_NET_F_GUEST_ECN); + add_pci_feature(dev, VIRTIO_NET_F_HOST_TSO4); + add_pci_feature(dev, VIRTIO_NET_F_HOST_TSO6); + add_pci_feature(dev, VIRTIO_NET_F_HOST_ECN); /* We handle indirect ring entries */ - add_feature(dev, VIRTIO_RING_F_INDIRECT_DESC); - /* We're compliant with the damn spec. */ - add_feature(dev, VIRTIO_F_ANY_LAYOUT); - set_config(dev, sizeof(conf), &conf); + add_pci_feature(dev, VIRTIO_RING_F_INDIRECT_DESC); + set_device_config(dev, &conf, sizeof(conf)); /* We don't need the socket any more; setup is done. */ close(ipfd); - devices.device_num++; - if (bridging) verbose("device %u: tun %s attached to bridge: %s\n", devices.device_num, tapif, arg); -- cgit v1.2.3 From 0d5b5d399f8cecfeebefdd010048b2d608eab463 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 11 Feb 2015 15:17:01 +1030 Subject: lguest: Convert entropy device to virtio 1.0 PCI. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index b6c88a10a4c9..842c82bd76ff 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -71,7 +71,7 @@ typedef uint8_t u8; #include "../../include/uapi/linux/virtio_net.h" #include "../../include/uapi/linux/virtio_blk.h" #include -#include +#include "../../include/uapi/linux/virtio_rng.h" #include #include "../../include/uapi/linux/virtio_pci.h" #include @@ -2224,7 +2224,6 @@ static void init_pci_config(struct pci_config *pci, u16 type, * * eg : * VIRTIO_ID_CONSOLE: class = 0x07, subclass = 0x00 - * VIRTIO_ID_RNG: class = 0xff, subclass = 0 */ pci->class = class; pci->subclass = subclass; @@ -2816,13 +2815,16 @@ static void setup_rng(void) rng_info->rfd = open_or_die("/dev/urandom", O_RDONLY); /* Create the new device. */ - dev = new_device("rng", VIRTIO_ID_RNG); + dev = new_pci_device("rng", VIRTIO_ID_RNG, 0xff, 0); dev->priv = rng_info; /* The device has one virtqueue, where the Guest places inbufs. */ - add_virtqueue(dev, VIRTQUEUE_NUM, rng_input); + add_pci_virtqueue(dev, rng_input); - verbose("device %u: rng\n", devices.device_num++); + /* We don't have any configuration space */ + no_device_config(dev); + + verbose("device %u: rng\n", devices.device_num); } /* That's the end of device setup. */ -- cgit v1.2.3 From ebff01137acd21534fffaffcf35cd4a3681b95ae Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 11 Feb 2015 15:18:01 +1030 Subject: lguest: Convert console device to virtio 1.0 PCI. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index 842c82bd76ff..fadd5723ba57 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -2221,9 +2221,6 @@ static void init_pci_config(struct pci_config *pci, u16 type, * PCI have specific codes for different types of devices. * Linux doesn't care, but it's a good clue for people looking * at the device. - * - * eg : - * VIRTIO_ID_CONSOLE: class = 0x07, subclass = 0x00 */ pci->class = class; pci->subclass = subclass; @@ -2370,7 +2367,7 @@ static void setup_console(void) tcsetattr(STDIN_FILENO, TCSANOW, &term); } - dev = new_device("console", VIRTIO_ID_CONSOLE); + dev = new_pci_device("console", VIRTIO_ID_CONSOLE, 0x07, 0x00); /* We store the console state in dev->priv, and initialize it. */ dev->priv = malloc(sizeof(struct console_abort)); @@ -2382,10 +2379,13 @@ static void setup_console(void) * stdin. When they put something in the output queue, we write it to * stdout. */ - add_virtqueue(dev, VIRTQUEUE_NUM, console_input); - add_virtqueue(dev, VIRTQUEUE_NUM, console_output); + add_pci_virtqueue(dev, console_input); + add_pci_virtqueue(dev, console_output); + + /* There's no configuration area for this device. */ + no_device_config(dev); - verbose("device %u: console\n", ++devices.device_num); + verbose("device %u: console\n", devices.device_num); } /*:*/ -- cgit v1.2.3 From eb39f83372b45bebc8af59b34af5d35bb0defe53 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 11 Feb 2015 15:19:01 +1030 Subject: lguest: define VIRTIO_CONFIG_NO_LEGACY in example launcher. We only support virtio 1.0 now Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index fadd5723ba57..663166aff1f5 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -63,6 +63,7 @@ typedef uint16_t u16; typedef uint8_t u8; /*:*/ +#define VIRTIO_CONFIG_NO_LEGACY #define VIRTIO_PCI_NO_LEGACY #define VIRTIO_BLK_NO_LEGACY -- cgit v1.2.3 From d9028eda7b381e57246a53bf9bffc04a4a2920b5 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 11 Feb 2015 15:21:01 +1030 Subject: lguest: remove support for lguest bus in demonstration launcher. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 355 ++++---------------------------------------------- 1 file changed, 22 insertions(+), 333 deletions(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index 663166aff1f5..b5ac73525f6d 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -117,14 +117,6 @@ struct device_list { /* Counter to print out convenient device numbers. */ unsigned int device_num; - /* The descriptor page for the devices. */ - u8 *descpage; - - /* A single linked list of devices. */ - struct device *dev; - /* And a pointer to the last device for easy append. */ - struct device *lastdev; - /* PCI devices. */ struct device *pci[MAX_PCI_DEVICES]; }; @@ -170,16 +162,6 @@ struct pci_config { /* The device structure describes a single device. */ struct device { - /* The linked-list pointer. */ - struct device *next; - - /* The device's descriptor, as mapped into the Guest. */ - struct lguest_device_desc *desc; - - /* We can't trust desc values once Guest has booted: we use these. */ - unsigned int feature_len; - unsigned int num_vq; - /* The name of this device, for --verbose. */ const char *name; @@ -216,9 +198,6 @@ struct virtqueue { /* Which device owns me. */ struct device *dev; - /* The configuration for this queue. */ - struct lguest_vqconfig config; - /* The actual ring of buffers. */ struct vring vring; @@ -301,13 +280,6 @@ static void iov_consume(struct iovec iov[], unsigned num_iov, errx(1, "iovec too short!"); } -/* The device virtqueue descriptors are followed by feature bitmasks. */ -static u8 *get_feature_bits(struct device *dev) -{ - return (u8 *)(dev->desc + 1) - + dev->num_vq * sizeof(struct lguest_vqconfig); -} - /*L:100 * The Launcher code itself takes us out into userspace, that scary place where * pointers run wild and free! Unfortunately, like most userspace programs, @@ -378,17 +350,6 @@ static void *map_zeroed_pages(unsigned int num) return addr + getpagesize(); } -/* Get some more pages for a device. */ -static void *get_pages(unsigned int num) -{ - void *addr = from_guest_phys(guest_limit); - - guest_limit += num * getpagesize(); - if (guest_limit > guest_max) - errx(1, "Not enough memory for devices"); - return addr; -} - /* Get some bytes which won't be mapped into the guest. */ static unsigned long get_mmio_region(size_t size) { @@ -701,7 +662,7 @@ static unsigned next_desc(struct vring_desc *desc, */ static void trigger_irq(struct virtqueue *vq) { - unsigned long buf[] = { LHREQ_IRQ, vq->config.irq }; + unsigned long buf[] = { LHREQ_IRQ, vq->dev->config.irq_line }; /* Don't inform them if nothing used. */ if (!vq->pending_used) @@ -713,13 +674,12 @@ static void trigger_irq(struct virtqueue *vq) return; } - /* For a PCI device, set isr to 1 (queue interrupt pending) */ - if (vq->dev->mmio) - vq->dev->mmio->isr = 0x1; + /* Set isr to 1 (queue interrupt pending) */ + vq->dev->mmio->isr = 0x1; /* Send the Guest an interrupt tell them we used something up. */ if (write(lguest_fd, buf, sizeof(buf)) != 0) - err(1, "Triggering irq %i", vq->config.irq); + err(1, "Triggering irq %i", vq->dev->config.irq_line); } /* @@ -1085,21 +1045,18 @@ static void reset_device(struct device *dev) verbose("Resetting device %s\n", dev->name); /* Clear any features they've acked. */ - memset(get_feature_bits(dev) + dev->feature_len, 0, dev->feature_len); + dev->features_accepted = 0; /* We're going to be explicitly killing threads, so ignore them. */ signal(SIGCHLD, SIG_IGN); - /* Zero out the virtqueues, get rid of their threads */ + /* Get rid of the virtqueue threads */ for (vq = dev->vq; vq; vq = vq->next) { if (vq->thread != (pid_t)-1) { kill(vq->thread, SIGTERM); waitpid(vq->thread, NULL, 0); vq->thread = (pid_t)-1; } - memset(vq->vring.desc, 0, - vring_size(vq->config.num, LGUEST_VRING_ALIGN)); - lg_last_avail(vq) = 0; } dev->running = false; @@ -1107,122 +1064,27 @@ static void reset_device(struct device *dev) signal(SIGCHLD, (void *)kill_launcher); } -/*L:216 - * This actually creates the thread which services the virtqueue for a device. - */ -static void create_thread(struct virtqueue *vq) -{ - /* - * Create stack for thread. Since the stack grows upwards, we point - * the stack pointer to the end of this region. - */ - char *stack = malloc(32768); - unsigned long args[] = { LHREQ_EVENTFD, - vq->config.pfn*getpagesize(), 0 }; - - /* Create a zero-initialized eventfd. */ - vq->eventfd = eventfd(0, 0); - if (vq->eventfd < 0) - err(1, "Creating eventfd"); - args[2] = vq->eventfd; - - /* - * Attach an eventfd to this virtqueue: it will go off when the Guest - * does an LHCALL_NOTIFY for this vq. - */ - if (write(lguest_fd, &args, sizeof(args)) != 0) - err(1, "Attaching eventfd"); - - /* - * CLONE_VM: because it has to access the Guest memory, and SIGCHLD so - * we get a signal if it dies. - */ - vq->thread = clone(do_thread, stack + 32768, CLONE_VM | SIGCHLD, vq); - if (vq->thread == (pid_t)-1) - err(1, "Creating clone"); - - /* We close our local copy now the child has it. */ - close(vq->eventfd); -} - -static void start_device(struct device *dev) +static void cleanup_devices(void) { unsigned int i; - struct virtqueue *vq; - - verbose("Device %s OK: offered", dev->name); - for (i = 0; i < dev->feature_len; i++) - verbose(" %02x", get_feature_bits(dev)[i]); - verbose(", accepted"); - for (i = 0; i < dev->feature_len; i++) - verbose(" %02x", get_feature_bits(dev) - [dev->feature_len+i]); - for (vq = dev->vq; vq; vq = vq->next) { - if (vq->service) - create_thread(vq); + for (i = 1; i < MAX_PCI_DEVICES; i++) { + struct device *d = devices.pci[i]; + if (!d) + continue; + reset_device(d); } - dev->running = true; -} - -static void cleanup_devices(void) -{ - struct device *dev; - - for (dev = devices.dev; dev; dev = dev->next) - reset_device(dev); /* If we saved off the original terminal settings, restore them now. */ if (orig_term.c_lflag & (ISIG|ICANON|ECHO)) tcsetattr(STDIN_FILENO, TCSANOW, &orig_term); } -/* When the Guest tells us they updated the status field, we handle it. */ -static void update_device_status(struct device *dev) -{ - /* A zero status is a reset, otherwise it's a set of flags. */ - if (dev->desc->status == 0) - reset_device(dev); - else if (dev->desc->status & VIRTIO_CONFIG_S_FAILED) { - warnx("Device %s configuration FAILED", dev->name); - if (dev->running) - reset_device(dev); - } else { - if (dev->running) - err(1, "Device %s features finalized twice", dev->name); - start_device(dev); - } -} - /*L:215 - * This is the generic routine we call when the Guest uses LHCALL_NOTIFY. In - * particular, it's used to notify us of device status changes during boot. + * This is the generic routine we call when the Guest uses LHCALL_NOTIFY. */ static void handle_output(unsigned long addr) { - struct device *i; - - /* Check each device. */ - for (i = devices.dev; i; i = i->next) { - struct virtqueue *vq; - - /* - * Notifications to device descriptors mean they updated the - * device status. - */ - if (from_guest_phys(addr) == i->desc) { - update_device_status(i); - return; - } - - /* Devices should not be used before features are finalized. */ - for (vq = i->vq; vq; vq = vq->next) { - if (addr != vq->config.pfn*getpagesize()) - continue; - errx(1, "Notification on %s before setup!", i->name); - } - } - /* * Early console write is done using notify on a nul-terminated string * in Guest memory. It's also great for hacking debugging messages @@ -1736,11 +1598,6 @@ static void enable_virtqueue(struct device *d, struct virtqueue *vq) err(1, "Creating clone"); } -static void reset_pci_device(struct device *dev) -{ - /* FIXME */ -} - static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) { struct virtqueue *vq; @@ -1775,7 +1632,7 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) case offsetof(struct virtio_pci_mmio, cfg.device_status): verbose("%s: device status -> %#x\n", d->name, val); if (val == 0) - reset_pci_device(d); + reset_device(d); goto write_through8; case offsetof(struct virtio_pci_mmio, cfg.queue_select): vq = vq_by_num(d, val); @@ -1986,102 +1843,6 @@ static void emulate_mmio(unsigned long paddr, const u8 *insn) * device" so the Launcher can keep track of it. We have common helper * routines to allocate and manage them. */ - -/* - * The layout of the device page is a "struct lguest_device_desc" followed by a - * number of virtqueue descriptors, then two sets of feature bits, then an - * array of configuration bytes. This routine returns the configuration - * pointer. - */ -static u8 *device_config(const struct device *dev) -{ - return (void *)(dev->desc + 1) - + dev->num_vq * sizeof(struct lguest_vqconfig) - + dev->feature_len * 2; -} - -/* - * This routine allocates a new "struct lguest_device_desc" from descriptor - * table page just above the Guest's normal memory. It returns a pointer to - * that descriptor. - */ -static struct lguest_device_desc *new_dev_desc(u16 type) -{ - struct lguest_device_desc d = { .type = type }; - void *p; - - /* Figure out where the next device config is, based on the last one. */ - if (devices.lastdev) - p = device_config(devices.lastdev) - + devices.lastdev->desc->config_len; - else - p = devices.descpage; - - /* We only have one page for all the descriptors. */ - if (p + sizeof(d) > (void *)devices.descpage + getpagesize()) - errx(1, "Too many devices"); - - /* p might not be aligned, so we memcpy in. */ - return memcpy(p, &d, sizeof(d)); -} - -/* - * Each device descriptor is followed by the description of its virtqueues. We - * specify how many descriptors the virtqueue is to have. - */ -static void add_virtqueue(struct device *dev, unsigned int num_descs, - void (*service)(struct virtqueue *)) -{ - unsigned int pages; - struct virtqueue **i, *vq = malloc(sizeof(*vq)); - void *p; - - /* First we need some memory for this virtqueue. */ - pages = (vring_size(num_descs, LGUEST_VRING_ALIGN) + getpagesize() - 1) - / getpagesize(); - p = get_pages(pages); - - /* Initialize the virtqueue */ - vq->next = NULL; - vq->last_avail_idx = 0; - vq->dev = dev; - - /* - * This is the routine the service thread will run, and its Process ID - * once it's running. - */ - vq->service = service; - vq->thread = (pid_t)-1; - - /* Initialize the configuration. */ - vq->config.num = num_descs; - vq->config.irq = devices.next_irq++; - vq->config.pfn = to_guest_phys(p) / getpagesize(); - - /* Initialize the vring. */ - vring_init(&vq->vring, num_descs, p, LGUEST_VRING_ALIGN); - - /* - * Append virtqueue to this device's descriptor. We use - * device_config() to get the end of the device's current virtqueues; - * we check that we haven't added any config or feature information - * yet, otherwise we'd be overwriting them. - */ - assert(dev->desc->config_len == 0 && dev->desc->feature_len == 0); - memcpy(device_config(dev), &vq->config, sizeof(vq->config)); - dev->num_vq++; - dev->desc->num_vq++; - - verbose("Virtqueue page %#lx\n", to_guest_phys(p)); - - /* - * Add to tail of list, so dev->vq is first vq, dev->vq->next is - * second. - */ - for (i = &dev->vq; *i; i = &(*i)->next); - *i = vq; -} - static void add_pci_virtqueue(struct device *dev, void (*service)(struct virtqueue *)) { @@ -2107,9 +1868,6 @@ static void add_pci_virtqueue(struct device *dev, /* Add one to the number of queues */ vq->dev->mmio->cfg.num_queues++; - /* FIXME: Do irq per virtqueue, not per device. */ - vq->config.irq = vq->dev->config.irq_line; - /* * Add to tail of list, so dev->vq is first vq, dev->vq->next is * second. @@ -2118,47 +1876,12 @@ static void add_pci_virtqueue(struct device *dev, *i = vq; } -/* - * The first half of the feature bitmask is for us to advertise features. The - * second half is for the Guest to accept features. - */ -static void add_feature(struct device *dev, unsigned bit) -{ - u8 *features = get_feature_bits(dev); - - /* We can't extend the feature bits once we've added config bytes */ - if (dev->desc->feature_len <= bit / CHAR_BIT) { - assert(dev->desc->config_len == 0); - dev->feature_len = dev->desc->feature_len = (bit/CHAR_BIT) + 1; - } - - features[bit / CHAR_BIT] |= (1 << (bit % CHAR_BIT)); -} - +/* The Guest accesses the feature bits via the PCI common config MMIO region */ static void add_pci_feature(struct device *dev, unsigned bit) { dev->features |= (1ULL << bit); } -/* - * This routine sets the configuration fields for an existing device's - * descriptor. It only works for the last device, but that's OK because that's - * how we use it. - */ -static void set_config(struct device *dev, unsigned len, const void *conf) -{ - /* Check we haven't overflowed our single page. */ - if (device_config(dev) + len > devices.descpage + getpagesize()) - errx(1, "Too many devices"); - - /* Copy in the config information, and store the length. */ - memcpy(device_config(dev), conf, len); - dev->desc->config_len = len; - - /* Size must fit in config_len field (8 bits)! */ - assert(dev->desc->config_len == len); -} - /* For devices with no config. */ static void no_device_config(struct device *dev) { @@ -2287,59 +2010,28 @@ static void init_pci_config(struct pci_config *pci, u16 type, } /* - * This routine does all the creation and setup of a new device, including - * calling new_dev_desc() to allocate the descriptor and device memory. We - * don't actually start the service threads until later. + * This routine does all the creation and setup of a new device, but we don't + * actually place the MMIO region until we know the size (if any) of the + * device-specific config. And we don't actually start the service threads + * until later. * * See what I mean about userspace being boring? */ -static struct device *new_device(const char *name, u16 type) -{ - struct device *dev = malloc(sizeof(*dev)); - - /* Now we populate the fields one at a time. */ - dev->desc = new_dev_desc(type); - dev->name = name; - dev->vq = NULL; - dev->feature_len = 0; - dev->num_vq = 0; - dev->running = false; - dev->next = NULL; - - /* - * Append to device list. Prepending to a single-linked list is - * easier, but the user expects the devices to be arranged on the bus - * in command-line order. The first network device on the command line - * is eth0, the first block device /dev/vda, etc. - */ - if (devices.lastdev) - devices.lastdev->next = dev; - else - devices.dev = dev; - devices.lastdev = dev; - - return dev; -} - static struct device *new_pci_device(const char *name, u16 type, u8 class, u8 subclass) { struct device *dev = malloc(sizeof(*dev)); /* Now we populate the fields one at a time. */ - dev->desc = NULL; dev->name = name; dev->vq = NULL; - dev->feature_len = 0; - dev->num_vq = 0; dev->running = false; - dev->next = NULL; dev->mmio_size = sizeof(struct virtio_pci_mmio); dev->mmio = calloc(1, dev->mmio_size); dev->features = (u64)1 << VIRTIO_F_VERSION_1; dev->features_accepted = 0; - if (devices.device_num + 1 >= 32) + if (devices.device_num + 1 >= MAX_PCI_DEVICES) errx(1, "Can only handle 31 PCI devices"); init_pci_config(&dev->config, type, class, subclass); @@ -2940,11 +2632,9 @@ int main(int argc, char *argv[]) main_args = argv; /* - * First we initialize the device list. We keep a pointer to the last - * device, and the next interrupt number to use for devices (1: - * remember that 0 is used by the timer). + * First we initialize the device list. We remember next interrupt + * number to use for devices (1: remember that 0 is used by the timer). */ - devices.lastdev = NULL; devices.next_irq = 1; /* We're CPU 0. In fact, that's the only CPU possible right now. */ @@ -2969,7 +2659,6 @@ int main(int argc, char *argv[]) + DEVICE_PAGES); guest_limit = mem; guest_max = guest_mmio = mem + DEVICE_PAGES*getpagesize(); - devices.descpage = get_pages(1); break; } } -- cgit v1.2.3 From e8330d9bc1f7af7737500aebd3fc1f488e3dbb71 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 11 Feb 2015 15:23:01 +1030 Subject: lguest: support emerg_wr in console device in example launcher. This is a magic register which causes a character to be outputted: it can be used even before the device is configured. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index b5ac73525f6d..8959ac246668 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -71,7 +71,7 @@ typedef uint8_t u8; #include "../../include/uapi/linux/virtio_config.h" #include "../../include/uapi/linux/virtio_net.h" #include "../../include/uapi/linux/virtio_blk.h" -#include +#include "../../include/uapi/linux/virtio_console.h" #include "../../include/uapi/linux/virtio_rng.h" #include #include "../../include/uapi/linux/virtio_pci.h" @@ -1687,6 +1687,15 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) goto write_through16; case offsetof(struct virtio_pci_mmio, isr): errx(1, "%s: Unexpected write to isr", d->name); + /* Weird corner case: write to emerg_wr of console */ + case sizeof(struct virtio_pci_mmio) + + offsetof(struct virtio_console_config, emerg_wr): + if (strcmp(d->name, "console") == 0) { + char c = val; + write(STDOUT_FILENO, &c, 1); + goto write_through32; + } + /* Fall through... */ default: errx(1, "%s: Unexpected write to offset %u", d->name, off); } @@ -2048,6 +2057,7 @@ static struct device *new_pci_device(const char *name, u16 type, static void setup_console(void) { struct device *dev; + struct virtio_console_config conf; /* If we can save the initial standard input settings... */ if (tcgetattr(STDIN_FILENO, &orig_term) == 0) { @@ -2075,8 +2085,9 @@ static void setup_console(void) add_pci_virtqueue(dev, console_input); add_pci_virtqueue(dev, console_output); - /* There's no configuration area for this device. */ - no_device_config(dev); + /* We need a configuration area for the emerg_wr early writes. */ + add_pci_feature(dev, VIRTIO_CONSOLE_F_EMERG_WRITE); + set_device_config(dev, &conf, sizeof(conf)); verbose("device %u: console\n", devices.device_num); } -- cgit v1.2.3 From 59eba788db298c3597728774dc3d0f16bdc8a1a4 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 11 Feb 2015 15:24:01 +1030 Subject: lguest: support backdoor window. The VIRTIO_PCI_CAP_PCI_CFG in the PCI virtio 1.0 spec allows access to the BAR registers without mapping them. This is a compulsory feature, and we implement it here. There are some subtleties involving access widths which we should note: 4.1.4.7.1 Device Requirements: PCI configuration access capability ... Upon detecting driver write access to pci_cfg_data, the device MUST execute a write access at offset cap.offset at BAR selected by cap.bar using the first cap.length bytes from pci_cfg_data. Upon detecting driver read access to pci_cfg_data, the device MUST execute a read access of length cap.length at offset cap.offset at BAR selected by cap.bar and store the first cap.length bytes in pci_cfg_data. So, for a write, we copy into the pci_cfg_data window, then write from there out to the BAR. This works correctly if cap.length != width of write. Similarly, for a read, we read into window from the BAR then read the value from there. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 101 +++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 100 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index 8959ac246668..e3c4d3d7dc2a 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -156,7 +156,6 @@ struct pci_config { struct virtio_pci_notify_cap notify; struct virtio_pci_cap isr; struct virtio_pci_cap device; - /* FIXME: Implement this! */ struct virtio_pci_cfg_cap cfg_access; }; @@ -1184,6 +1183,36 @@ static struct device *dev_and_reg(u32 *reg) return find_pci_device(pci_config_addr.bits.devnum); } +/* + * We can get invalid combinations of values while they're writing, so we + * only fault if they try to write with some invalid bar/offset/length. + */ +static bool valid_bar_access(struct device *d, + struct virtio_pci_cfg_cap *cfg_access) +{ + /* We only have 1 bar (BAR0) */ + if (cfg_access->cap.bar != 0) + return false; + + /* Check it's within BAR0. */ + if (cfg_access->cap.offset >= d->mmio_size + || cfg_access->cap.offset + cfg_access->cap.length > d->mmio_size) + return false; + + /* Check length is 1, 2 or 4. */ + if (cfg_access->cap.length != 1 + && cfg_access->cap.length != 2 + && cfg_access->cap.length != 4) + return false; + + /* Offset must be multiple of length */ + if (cfg_access->cap.offset % cfg_access->cap.length != 0) + return false; + + /* Return pointer into word in BAR0. */ + return true; +} + /* Is this accessing the PCI config address port?. */ static bool is_pci_addr_port(u16 port) { @@ -1215,6 +1244,8 @@ static bool is_pci_data_port(u16 port) return port >= PCI_CONFIG_DATA && port < PCI_CONFIG_DATA + 4; } +static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask); + static bool pci_data_iowrite(u16 port, u32 mask, u32 val) { u32 reg, portoff; @@ -1255,12 +1286,53 @@ static bool pci_data_iowrite(u16 port, u32 mask, u32 val) && mask == 0xFFFF) { /* Ignore command writes. */ return true; + } else if (&d->config_words[reg] + == (void *)&d->config.cfg_access.cap.bar + || &d->config_words[reg] + == &d->config.cfg_access.cap.length + || &d->config_words[reg] + == &d->config.cfg_access.cap.offset) { + + /* + * The VIRTIO_PCI_CAP_PCI_CFG capability + * provides a backdoor to access the MMIO + * regions without mapping them. Weird, but + * useful. + */ + iowrite(portoff, val, mask, &d->config_words[reg]); + return true; + } else if (&d->config_words[reg] == &d->config.cfg_access.window) { + u32 write_mask; + + /* Must be bar 0 */ + if (!valid_bar_access(d, &d->config.cfg_access)) + return false; + + /* First copy what they wrote into the window */ + iowrite(portoff, val, mask, &d->config.cfg_access.window); + + /* + * Now emulate a write. The mask we use is set by + * len, *not* this write! + */ + write_mask = (1ULL<<(8*d->config.cfg_access.cap.length)) - 1; + verbose("Window writing %#x/%#x to bar %u, offset %u len %u\n", + d->config.cfg_access.window, write_mask, + d->config.cfg_access.cap.bar, + d->config.cfg_access.cap.offset, + d->config.cfg_access.cap.length); + + emulate_mmio_write(d, d->config.cfg_access.cap.offset, + d->config.cfg_access.window, write_mask); + return true; } /* Complain about other writes. */ return false; } +static u32 emulate_mmio_read(struct device *d, u32 off, u32 mask); + static void pci_data_ioread(u16 port, u32 mask, u32 *val) { u32 reg; @@ -1268,6 +1340,33 @@ static void pci_data_ioread(u16 port, u32 mask, u32 *val) if (!d) return; + + /* Read through the PCI MMIO access window is special */ + if (&d->config_words[reg] == &d->config.cfg_access.window) { + u32 read_mask; + + /* Must be bar 0 */ + if (!valid_bar_access(d, &d->config.cfg_access)) + errx(1, "Invalid cfg_access to bar%u, offset %u len %u", + d->config.cfg_access.cap.bar, + d->config.cfg_access.cap.offset, + d->config.cfg_access.cap.length); + + /* + * Read into the window. The mask we use is set by + * len, *not* this read! + */ + read_mask = (1ULL<<(8*d->config.cfg_access.cap.length))-1; + d->config.cfg_access.window + = emulate_mmio_read(d, + d->config.cfg_access.cap.offset, + read_mask); + verbose("Window read %#x/%#x from bar %u, offset %u len %u\n", + d->config.cfg_access.window, read_mask, + d->config.cfg_access.cap.bar, + d->config.cfg_access.cap.offset, + d->config.cfg_access.cap.length); + } ioread(port - PCI_CONFIG_DATA, d->config_words[reg], mask, val); } -- cgit v1.2.3 From 713e3f72244cb67fe1ad5c82a061c0b1be2f2fc5 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 11 Feb 2015 15:25:01 +1030 Subject: lguest: always put console in PCI slot #1. This simplifies the early probe. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index e3c4d3d7dc2a..7cc1fed1094d 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -2773,6 +2773,9 @@ int main(int argc, char *argv[]) } } + /* We always have a console device, and it's always device 1. */ + setup_console(); + /* The options are fairly straight-forward */ while ((c = getopt_long(argc, argv, "v", opts, NULL)) != EOF) { switch (c) { @@ -2813,9 +2816,6 @@ int main(int argc, char *argv[]) verbose("Guest base is at %p\n", guest_base); - /* We always have a console device */ - setup_console(); - /* Initialize the (fake) PCI host bridge device. */ init_pci_host_bridge(); -- cgit v1.2.3 From 00f8d546512a7661d43600625f87a42a98cae26a Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 11 Feb 2015 15:27:01 +1030 Subject: lguest: remove NOTIFY facility from demonstration launcher. This was only used for early console, now we can get rid of it altogether. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 25 +------------------------ 1 file changed, 1 insertion(+), 24 deletions(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index 7cc1fed1094d..5d104321f70f 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -1079,23 +1079,6 @@ static void cleanup_devices(void) tcsetattr(STDIN_FILENO, TCSANOW, &orig_term); } -/*L:215 - * This is the generic routine we call when the Guest uses LHCALL_NOTIFY. - */ -static void handle_output(unsigned long addr) -{ - /* - * Early console write is done using notify on a nul-terminated string - * in Guest memory. It's also great for hacking debugging messages - * into a Guest. - */ - if (addr >= guest_limit) - errx(1, "Bad NOTIFY %#lx", addr); - - write(STDOUT_FILENO, from_guest_phys(addr), - strnlen(from_guest_phys(addr), guest_limit - addr)); -} - /*L:217 * We do PCI. This is mainly done to let us test the kernel virtio PCI * code. @@ -2662,14 +2645,8 @@ static void __attribute__((noreturn)) run_guest(void) /* We read from the /dev/lguest device to run the Guest. */ readval = pread(lguest_fd, ¬ify, sizeof(notify), cpu_id); - - /* One unsigned long means the Guest did HCALL_NOTIFY */ if (readval == sizeof(notify)) { - if (notify.trap == 0x1F) { - verbose("Notify on address %#08x\n", - notify.addr); - handle_output(notify.addr); - } else if (notify.trap == 13) { + if (notify.trap == 13) { verbose("Emulating instruction at %#x\n", getreg(eip)); emulate_insn(notify.insn); -- cgit v1.2.3 From 56873f43abdcd574b25105867a990f067747b2f4 Mon Sep 17 00:00:00 2001 From: "Wang, Yalin" Date: Wed, 11 Feb 2015 15:24:51 -0800 Subject: mm:add KPF_ZERO_PAGE flag for /proc/kpageflags Add KPF_ZERO_PAGE flag for zero_page, so that userspace processes can detect zero_page in /proc/kpageflags, and then do memory analysis more accurately. Signed-off-by: Yalin Wang Acked-by: Kirill A. Shutemov Cc: Konstantin Khlebnikov Cc: Naoya Horiguchi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- tools/vm/page-types.c | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/vm/page-types.c b/tools/vm/page-types.c index 264fbc297e0b..8bdf16b8ba60 100644 --- a/tools/vm/page-types.c +++ b/tools/vm/page-types.c @@ -133,6 +133,7 @@ static const char * const page_flag_names[] = { [KPF_KSM] = "x:ksm", [KPF_THP] = "t:thp", [KPF_BALLOON] = "o:balloon", + [KPF_ZERO_PAGE] = "z:zero_page", [KPF_RESERVED] = "r:reserved", [KPF_MLOCKED] = "m:mlocked", -- cgit v1.2.3 From d2dbdac336e8ea1296fd08c4eb8a28daacec1817 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Fri, 13 Feb 2015 17:13:40 +1030 Subject: tools/lguest: handle device reset correctly in example launcher. The example launcher doesn't reset the queue_enable like the spec says we have to. Plus, we should reset the size in case they negotiated a different (smaller) one. This is easy to test by unloading and reloading a virtio module. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index 5d104321f70f..60cabafdf615 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -1037,6 +1037,12 @@ static void kill_launcher(int signal) kill(0, SIGTERM); } +static void reset_vq_pci_config(struct virtqueue *vq) +{ + vq->pci_config.queue_size = VIRTQUEUE_NUM; + vq->pci_config.queue_enable = 0; +} + static void reset_device(struct device *dev) { struct virtqueue *vq; @@ -1049,8 +1055,19 @@ static void reset_device(struct device *dev) /* We're going to be explicitly killing threads, so ignore them. */ signal(SIGCHLD, SIG_IGN); + /* + * 4.1.4.3.1: + * + * The device MUST present a 0 in queue_enable on reset. + * + * This means we set it here, and reset the saved ones in every vq. + */ + dev->mmio->cfg.queue_enable = 0; + /* Get rid of the virtqueue threads */ for (vq = dev->vq; vq; vq = vq->next) { + vq->last_avail_idx = 0; + reset_vq_pci_config(vq); if (vq->thread != (pid_t)-1) { kill(vq->thread, SIGTERM); waitpid(vq->thread, NULL, 0); @@ -1952,8 +1969,7 @@ static void add_pci_virtqueue(struct device *dev, vq->thread = (pid_t)-1; /* Initialize the configuration. */ - vq->pci_config.queue_size = VIRTQUEUE_NUM; - vq->pci_config.queue_enable = 0; + reset_vq_pci_config(vq); vq->pci_config.queue_notify_off = 0; /* Add one to the number of queues */ -- cgit v1.2.3 From 53aceb49f9b7e1d42064ffff4f4df7e9882b182d Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Fri, 13 Feb 2015 17:13:41 +1030 Subject: tools/lguest: fix features_accepted logic in example launcher. We were clearing the lower bits when setting the upper bits. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index 60cabafdf615..b3e73f258910 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -1721,7 +1721,7 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) d->features_accepted |= val; } else { assert(d->mmio->cfg.guest_feature_select == 1); - d->features_accepted &= ((u64)0xFFFFFFFF << 32); + d->features_accepted &= 0xFFFFFFFF; d->features_accepted |= ((u64)val) << 32; } if (d->features_accepted & ~d->features) -- cgit v1.2.3 From b2ce1ea4427f0c752f8718a411435cc9527faa3d Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Fri, 13 Feb 2015 17:13:41 +1030 Subject: tools/lguest: rename virtio_pci_cfg_cap field to match spec. The next patch will insert many quotes from the virtio 1.0 spec; they make most sense if we copy the spec. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index b3e73f258910..b00263f5febb 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -126,7 +126,7 @@ static struct device_list devices; struct virtio_pci_cfg_cap { struct virtio_pci_cap cap; - u32 window; /* Data for BAR access. */ + u32 pci_cfg_data; /* Data for BAR access. */ }; struct virtio_pci_mmio { @@ -1301,7 +1301,7 @@ static bool pci_data_iowrite(u16 port, u32 mask, u32 val) */ iowrite(portoff, val, mask, &d->config_words[reg]); return true; - } else if (&d->config_words[reg] == &d->config.cfg_access.window) { + } else if (&d->config_words[reg] == &d->config.cfg_access.pci_cfg_data) { u32 write_mask; /* Must be bar 0 */ @@ -1309,7 +1309,7 @@ static bool pci_data_iowrite(u16 port, u32 mask, u32 val) return false; /* First copy what they wrote into the window */ - iowrite(portoff, val, mask, &d->config.cfg_access.window); + iowrite(portoff, val, mask, &d->config.cfg_access.pci_cfg_data); /* * Now emulate a write. The mask we use is set by @@ -1317,13 +1317,14 @@ static bool pci_data_iowrite(u16 port, u32 mask, u32 val) */ write_mask = (1ULL<<(8*d->config.cfg_access.cap.length)) - 1; verbose("Window writing %#x/%#x to bar %u, offset %u len %u\n", - d->config.cfg_access.window, write_mask, + d->config.cfg_access.pci_cfg_data, write_mask, d->config.cfg_access.cap.bar, d->config.cfg_access.cap.offset, d->config.cfg_access.cap.length); emulate_mmio_write(d, d->config.cfg_access.cap.offset, - d->config.cfg_access.window, write_mask); + d->config.cfg_access.pci_cfg_data, + write_mask); return true; } @@ -1342,7 +1343,7 @@ static void pci_data_ioread(u16 port, u32 mask, u32 *val) return; /* Read through the PCI MMIO access window is special */ - if (&d->config_words[reg] == &d->config.cfg_access.window) { + if (&d->config_words[reg] == &d->config.cfg_access.pci_cfg_data) { u32 read_mask; /* Must be bar 0 */ @@ -1357,12 +1358,12 @@ static void pci_data_ioread(u16 port, u32 mask, u32 *val) * len, *not* this read! */ read_mask = (1ULL<<(8*d->config.cfg_access.cap.length))-1; - d->config.cfg_access.window + d->config.cfg_access.pci_cfg_data = emulate_mmio_read(d, d->config.cfg_access.cap.offset, read_mask); verbose("Window read %#x/%#x from bar %u, offset %u len %u\n", - d->config.cfg_access.window, read_mask, + d->config.cfg_access.pci_cfg_data, read_mask, d->config.cfg_access.cap.bar, d->config.cfg_access.cap.offset, d->config.cfg_access.cap.length); -- cgit v1.2.3 From 8dc425ffdd20b3462cfb43eb4f94a7ed8296dd63 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Fri, 13 Feb 2015 17:13:41 +1030 Subject: tools/lguest: insert device references from the 1.0 spec (4.1 Virtio Over PCI) There are some (optional) parts we don't implement, but this quotes all the device requirements from the spec (csd 03, but it should be the same across all released versions). Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 140 ++++++++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 131 insertions(+), 9 deletions(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index b00263f5febb..10a72b810127 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -673,7 +673,13 @@ static void trigger_irq(struct virtqueue *vq) return; } - /* Set isr to 1 (queue interrupt pending) */ + /* + * 4.1.4.5.1: + * + * If MSI-X capability is disabled, the device MUST set the Queue + * Interrupt bit in ISR status before sending a virtqueue notification + * to the driver. + */ vq->dev->mmio->isr = 0x1; /* Send the Guest an interrupt tell them we used something up. */ @@ -1304,11 +1310,19 @@ static bool pci_data_iowrite(u16 port, u32 mask, u32 val) } else if (&d->config_words[reg] == &d->config.cfg_access.pci_cfg_data) { u32 write_mask; + /* + * 4.1.4.7.1: + * + * Upon detecting driver write access to pci_cfg_data, the + * device MUST execute a write access at offset cap.offset at + * BAR selected by cap.bar using the first cap.length bytes + * from pci_cfg_data. + */ + /* Must be bar 0 */ if (!valid_bar_access(d, &d->config.cfg_access)) return false; - /* First copy what they wrote into the window */ iowrite(portoff, val, mask, &d->config.cfg_access.pci_cfg_data); /* @@ -1346,6 +1360,14 @@ static void pci_data_ioread(u16 port, u32 mask, u32 *val) if (&d->config_words[reg] == &d->config.cfg_access.pci_cfg_data) { u32 read_mask; + /* + * 4.1.4.7.1: + * + * Upon detecting driver read access to pci_cfg_data, the + * device MUST execute a read access of length cap.length at + * offset cap.offset at BAR selected by cap.bar and store the + * first cap.length bytes in pci_cfg_data. + */ /* Must be bar 0 */ if (!valid_bar_access(d, &d->config.cfg_access)) errx(1, "Invalid cfg_access to bar%u, offset %u len %u", @@ -1704,6 +1726,13 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) switch (off) { case offsetof(struct virtio_pci_mmio, cfg.device_feature_select): + /* + * 4.1.4.3.1: + * + * The device MUST present the feature bits it is offering in + * device_feature, starting at bit device_feature_select ∗ 32 + * for any device_feature_select written by the driver + */ if (val == 0) d->mmio->cfg.device_feature = d->features; else if (val == 1) @@ -1731,12 +1760,23 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) goto write_through32; case offsetof(struct virtio_pci_mmio, cfg.device_status): verbose("%s: device status -> %#x\n", d->name, val); + /* + * 4.1.4.3.1: + * + * The device MUST reset when 0 is written to device_status, + * and present a 0 in device_status once that is done. + */ if (val == 0) reset_device(d); goto write_through8; case offsetof(struct virtio_pci_mmio, cfg.queue_select): vq = vq_by_num(d, val); - /* Out of range? Return size 0 */ + /* + * 4.1.4.3.1: + * + * The device MUST present a 0 in queue_size if the virtqueue + * corresponding to the current queue_select is unavailable. + */ if (!vq) { d->mmio->cfg.queue_size = 0; goto write_through16; @@ -1841,6 +1881,17 @@ static u32 emulate_mmio_read(struct device *d, u32 off, u32 mask) goto read_through16; case offsetof(struct virtio_pci_mmio, cfg.device_status): case offsetof(struct virtio_pci_mmio, cfg.config_generation): + /* + * 4.1.4.3.1: + * + * The device MUST present a changed config_generation after + * the driver has read a device-specific configuration value + * which has changed since any part of the device-specific + * configuration was last read. + * + * This is simple: none of our devices change config, so this + * is always 0. + */ goto read_through8; case offsetof(struct virtio_pci_mmio, notify): goto read_through16; @@ -1848,8 +1899,12 @@ static u32 emulate_mmio_read(struct device *d, u32 off, u32 mask) if (mask != 0xFF) errx(1, "%s: non-8-bit read from offset %u (%#x)", d->name, off, getreg(eip)); - /* Read resets the isr */ isr = d->mmio->isr; + /* + * 4.1.4.5.1: + * + * The device MUST reset ISR status to 0 on driver read. + */ d->mmio->isr = 0; return isr; case offsetof(struct virtio_pci_mmio, padding): @@ -2008,10 +2063,25 @@ static void set_device_config(struct device *dev, const void *conf, size_t len) dev->mmio = realloc(dev->mmio, dev->mmio_size); memcpy(dev->mmio + 1, conf, len); + /* + * 4.1.4.6: + * + * The device MUST present at least one VIRTIO_PCI_CAP_DEVICE_CFG + * capability for any device type which has a device-specific + * configuration. + */ /* Hook up device cfg */ dev->config.cfg_access.cap.cap_next = offsetof(struct pci_config, device); + /* + * 4.1.4.6.1: + * + * The offset for the device-specific configuration MUST be 4-byte + * aligned. + */ + assert(dev->config.cfg_access.cap.cap_next % 4 == 0); + /* Fix up device cfg field length. */ dev->config.device.length = len; @@ -2041,7 +2111,12 @@ static void init_pci_config(struct pci_config *pci, u16 type, { size_t bar_offset, bar_len; - /* Save typing: most thing are happy being zero. */ + /* + * 4.1.4.4.1: + * + * The device MUST either present notify_off_multiplier as an even + * power of 2, or present notify_off_multiplier as 0. + */ memset(pci, 0, sizeof(*pci)); /* 4.1.2.1: Devices MUST have the PCI Vendor ID 0x1AF4 */ @@ -2058,14 +2133,18 @@ static void init_pci_config(struct pci_config *pci, u16 type, pci->subclass = subclass; /* - * 4.1.2.1 Non-transitional devices SHOULD have a PCI Revision - * ID of 1 or higher + * 4.1.2.1: + * + * Non-transitional devices SHOULD have a PCI Revision ID of 1 or + * higher */ pci->revid = 1; /* - * 4.1.2.1 Non-transitional devices SHOULD have a PCI - * Subsystem Device ID of 0x40 or higher. + * 4.1.2.1: + * + * Non-transitional devices SHOULD have a PCI Subsystem Device ID of + * 0x40 or higher. */ pci->subsystem_device_id = 0x40; @@ -2077,17 +2156,48 @@ static void init_pci_config(struct pci_config *pci, u16 type, pci->status = (1 << 4); /* Link them in. */ + /* + * 4.1.4.3.1: + * + * The device MUST present at least one common configuration + * capability. + */ pci->capabilities = offsetof(struct pci_config, common); + /* 4.1.4.3.1 ... offset MUST be 4-byte aligned. */ + assert(pci->capabilities % 4 == 0); + bar_offset = offsetof(struct virtio_pci_mmio, cfg); bar_len = sizeof(((struct virtio_pci_mmio *)0)->cfg); init_cap(&pci->common, sizeof(pci->common), VIRTIO_PCI_CAP_COMMON_CFG, bar_offset, bar_len, offsetof(struct pci_config, notify)); + /* + * 4.1.4.4.1: + * + * The device MUST present at least one notification capability. + */ bar_offset += bar_len; bar_len = sizeof(((struct virtio_pci_mmio *)0)->notify); + + /* + * 4.1.4.4.1: + * + * The cap.offset MUST be 2-byte aligned. + */ + assert(pci->common.cap_next % 2 == 0); + /* FIXME: Use a non-zero notify_off, for per-queue notification? */ + /* + * 4.1.4.4.1: + * + * The value cap.length presented by the device MUST be at least 2 and + * MUST be large enough to support queue notification offsets for all + * supported queues in all possible configurations. + */ + assert(bar_len >= 2); + init_cap(&pci->notify.cap, sizeof(pci->notify), VIRTIO_PCI_CAP_NOTIFY_CFG, bar_offset, bar_len, @@ -2095,11 +2205,23 @@ static void init_pci_config(struct pci_config *pci, u16 type, bar_offset += bar_len; bar_len = sizeof(((struct virtio_pci_mmio *)0)->isr); + /* + * 4.1.4.5.1: + * + * The device MUST present at least one VIRTIO_PCI_CAP_ISR_CFG + * capability. + */ init_cap(&pci->isr, sizeof(pci->isr), VIRTIO_PCI_CAP_ISR_CFG, bar_offset, bar_len, offsetof(struct pci_config, cfg_access)); + /* + * 4.1.4.7.1: + * + * The device MUST present at least one VIRTIO_PCI_CAP_PCI_CFG + * capability. + */ /* This doesn't have any presence in the BAR */ init_cap(&pci->cfg_access.cap, sizeof(pci->cfg_access), VIRTIO_PCI_CAP_PCI_CFG, -- cgit v1.2.3 From c97eb679ef70dbb4482e66b9d192fc9e5bc6e0d6 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Fri, 13 Feb 2015 17:13:42 +1030 Subject: tools/lguest: insert driver references from the 1.0 spec (4.1 Virtio Over PCI) As a demonstration, the lguest launcher is pretty strict, trying to catch badly behaved drivers. Document this precisely. A good implementation would *NOT* crash the guest when these happened! Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 57 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index 10a72b810127..80dc6346030e 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -1211,7 +1211,12 @@ static bool valid_bar_access(struct device *d, && cfg_access->cap.length != 4) return false; - /* Offset must be multiple of length */ + /* + * 4.1.4.7.2: + * + * The driver MUST NOT write a cap.offset which is not a multiple of + * cap.length (ie. all accesses MUST be aligned). + */ if (cfg_access->cap.offset % cfg_access->cap.length != 0) return false; @@ -1342,7 +1347,13 @@ static bool pci_data_iowrite(u16 port, u32 mask, u32 val) return true; } - /* Complain about other writes. */ + /* + * 4.1.4.1: + * + * The driver MUST NOT write into any field of the capability + * structure, with the exception of those with cap_type + * VIRTIO_PCI_CAP_PCI_CFG... + */ return false; } @@ -1789,6 +1800,12 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) restore_vq_config(&d->mmio->cfg, vq); goto write_through16; case offsetof(struct virtio_pci_mmio, cfg.queue_size): + /* + * 4.1.4.3.2: + * + * The driver MUST NOT write a value which is not a power of 2 + * to queue_size. + */ if (val & (val-1)) errx(1, "%s: invalid queue size %u\n", d->name, val); if (d->mmio->cfg.queue_enable) @@ -1799,11 +1816,22 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) errx(1, "%s: attempt to set MSIX vector to %u", d->name, val); case offsetof(struct virtio_pci_mmio, cfg.queue_enable): + /* + * 4.1.4.3.2: + * + * The driver MUST NOT write a 0 to queue_enable. + */ if (val != 1) errx(1, "%s: setting queue_enable to %u", d->name, val); d->mmio->cfg.queue_enable = val; save_vq_config(&d->mmio->cfg, vq_by_num(d, d->mmio->cfg.queue_select)); + /* + * 4.1.4.3.2: + * + * The driver MUST configure the other virtqueue fields before + * enabling the virtqueue with queue_enable. + */ enable_virtqueue(d, vq_by_num(d, d->mmio->cfg.queue_select)); goto write_through16; case offsetof(struct virtio_pci_mmio, cfg.queue_notify_off): @@ -1814,6 +1842,12 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) case offsetof(struct virtio_pci_mmio, cfg.queue_avail_hi): case offsetof(struct virtio_pci_mmio, cfg.queue_used_lo): case offsetof(struct virtio_pci_mmio, cfg.queue_used_hi): + /* + * 4.1.4.3.2: + * + * The driver MUST configure the other virtqueue fields before + * enabling the virtqueue with queue_enable. + */ if (d->mmio->cfg.queue_enable) errx(1, "%s: changing queue on live device", d->name); @@ -1837,9 +1871,23 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) } /* Fall through... */ default: + /* + * 4.1.4.3.2: + * + * The driver MUST NOT write to device_feature, num_queues, + * config_generation or queue_notify_off. + */ errx(1, "%s: Unexpected write to offset %u", d->name, off); } + + /* + * 4.1.3.1: + * + * The driver MUST access each field using the “natural” access + * method, i.e. 32-bit accesses for 32-bit fields, 16-bit accesses for + * 16-bit fields and 8-bit accesses for 8-bit fields. + */ write_through32: if (mask != 0xFFFFFFFF) { errx(1, "%s: non-32-bit write to offset %u (%#x)", @@ -1923,6 +1971,13 @@ static u32 emulate_mmio_read(struct device *d, u32 off, u32 mask) goto read_through8; } + /* + * 4.1.3.1: + * + * The driver MUST access each field using the “natural” access + * method, i.e. 32-bit accesses for 32-bit fields, 16-bit accesses for + * 16-bit fields and 8-bit accesses for 8-bit fields. + */ read_through32: if (mask != 0xFFFFFFFF) errx(1, "%s: non-32-bit read to offset %u (%#x)", -- cgit v1.2.3 From 3afe3e0f8db10a41a5923e1d7498318877473f33 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Fri, 13 Feb 2015 17:13:42 +1030 Subject: tools/lguest: handle indirect partway through chain. Linux doesn't generate these, but it's perfectly valid according to a close reading of the spec. I opened virtio spec bug VIRTIO-134 to make this clearer there, too. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 25 +++++++++++++------------ 1 file changed, 13 insertions(+), 12 deletions(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index 80dc6346030e..990671e61f87 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -769,20 +769,21 @@ static unsigned wait_for_vq_desc(struct virtqueue *vq, * that: no rmb() required. */ - /* - * If this is an indirect entry, then this buffer contains a descriptor - * table which we handle as if it's any normal descriptor chain. - */ - if (desc[i].flags & VRING_DESC_F_INDIRECT) { - if (desc[i].len % sizeof(struct vring_desc)) - errx(1, "Invalid size for indirect buffer table"); + do { + /* + * If this is an indirect entry, then this buffer contains a + * descriptor table which we handle as if it's any normal + * descriptor chain. + */ + if (desc[i].flags & VRING_DESC_F_INDIRECT) { + if (desc[i].len % sizeof(struct vring_desc)) + errx(1, "Invalid size for indirect buffer table"); - max = desc[i].len / sizeof(struct vring_desc); - desc = check_pointer(desc[i].addr, desc[i].len); - i = 0; - } + max = desc[i].len / sizeof(struct vring_desc); + desc = check_pointer(desc[i].addr, desc[i].len); + i = 0; + } - do { /* Grab the first descriptor, and check it's OK. */ iov[*out_num + *in_num].iov_len = desc[i].len; iov[*out_num + *in_num].iov_base -- cgit v1.2.3 From d761b0329108c73020a7c95b6fa0d7e82e35fe8b Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Fri, 13 Feb 2015 17:13:42 +1030 Subject: tools/lguest: don't start devices until DRIVER_OK status set. We were activating them with the virtqueues, and that's not allowed. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 44 ++++++++++++++++++++++++++++++++++++-------- 1 file changed, 36 insertions(+), 8 deletions(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index 990671e61f87..4c7c2aa66c89 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -1688,16 +1688,15 @@ static void restore_vq_config(struct virtio_pci_common_cfg *cfg, } /* + * 4.1.4.3.2: + * + * The driver MUST configure the other virtqueue fields before + * enabling the virtqueue with queue_enable. + * * When they enable the virtqueue, we check that their setup is valid. */ -static void enable_virtqueue(struct device *d, struct virtqueue *vq) +static void check_virtqueue(struct device *d, struct virtqueue *vq) { - /* - * Create stack for thread. Since the stack grows upwards, we point - * the stack pointer to the end of this region. - */ - char *stack = malloc(32768); - /* Because lguest is 32 bit, all the descriptor high bits must be 0 */ if (vq->pci_config.queue_desc_hi || vq->pci_config.queue_avail_hi @@ -1716,7 +1715,15 @@ static void enable_virtqueue(struct device *d, struct virtqueue *vq) sizeof(*vq->vring.used) + (sizeof(vq->vring.used->ring[0]) * vq->vring.num)); +} +static void start_virtqueue(struct virtqueue *vq) +{ + /* + * Create stack for thread. Since the stack grows upwards, we point + * the stack pointer to the end of this region. + */ + char *stack = malloc(32768); /* Create a zero-initialized eventfd. */ vq->eventfd = eventfd(0, 0); @@ -1732,6 +1739,16 @@ static void enable_virtqueue(struct device *d, struct virtqueue *vq) err(1, "Creating clone"); } +static void start_virtqueues(struct device *d) +{ + struct virtqueue *vq; + + for (vq = d->vq; vq; vq = vq->next) { + if (vq->pci_config.queue_enable) + start_virtqueue(vq); + } +} + static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) { struct virtqueue *vq; @@ -1780,6 +1797,17 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) */ if (val == 0) reset_device(d); + + /* + * 2.1.2: + * + * The device MUST NOT consume buffers or notify the driver + * before DRIVER_OK. + */ + if (val & VIRTIO_CONFIG_S_DRIVER_OK + && !(d->mmio->cfg.device_status & VIRTIO_CONFIG_S_DRIVER_OK)) + start_virtqueues(d); + goto write_through8; case offsetof(struct virtio_pci_mmio, cfg.queue_select): vq = vq_by_num(d, val); @@ -1833,7 +1861,7 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) * The driver MUST configure the other virtqueue fields before * enabling the virtqueue with queue_enable. */ - enable_virtqueue(d, vq_by_num(d, d->mmio->cfg.queue_select)); + check_virtqueue(d, vq_by_num(d, d->mmio->cfg.queue_select)); goto write_through16; case offsetof(struct virtio_pci_mmio, cfg.queue_notify_off): errx(1, "%s: attempt to write to queue_notify_off", d->name); -- cgit v1.2.3 From d39a6785f40af658224bc3ff3d4c4a5a2f7c9eda Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Fri, 13 Feb 2015 17:13:43 +1030 Subject: tools/lguest: more documentation and checking of virtio 1.0 compliance. This is from all the non-PCI parts of the spec. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 307 +++++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 293 insertions(+), 14 deletions(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index 4c7c2aa66c89..bc444aff2333 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -170,6 +170,9 @@ struct device { /* Is it operational */ bool running; + /* Has it written FEATURES_OK but not re-checked it? */ + bool wrote_features_ok; + /* PCI configuration */ union { struct pci_config config; @@ -668,7 +671,26 @@ static void trigger_irq(struct virtqueue *vq) return; vq->pending_used = 0; - /* If they don't want an interrupt, don't send one... */ + /* + * 2.4.7.1: + * + * If the VIRTIO_F_EVENT_IDX feature bit is not negotiated: + * The driver MUST set flags to 0 or 1. + */ + if (vq->vring.avail->flags > 1) + errx(1, "%s: avail->flags = %u\n", + vq->dev->name, vq->vring.avail->flags); + + /* + * 2.4.7.2: + * + * If the VIRTIO_F_EVENT_IDX feature bit is not negotiated: + * + * - The device MUST ignore the used_event value. + * - After the device writes a descriptor index into the used ring: + * - If flags is 1, the device SHOULD NOT send an interrupt. + * - If flags is 0, the device MUST send an interrupt. + */ if (vq->vring.avail->flags & VRING_AVAIL_F_NO_INTERRUPT) { return; } @@ -703,6 +725,14 @@ static unsigned wait_for_vq_desc(struct virtqueue *vq, struct vring_desc *desc; u16 last_avail = lg_last_avail(vq); + /* + * 2.4.7.1: + * + * The driver MUST handle spurious interrupts from the device. + * + * That's why this is a while loop. + */ + /* There's nothing available? */ while (last_avail == vq->vring.avail->idx) { u64 event; @@ -776,12 +806,62 @@ static unsigned wait_for_vq_desc(struct virtqueue *vq, * descriptor chain. */ if (desc[i].flags & VRING_DESC_F_INDIRECT) { + /* 2.4.5.3.1: + * + * The driver MUST NOT set the VIRTQ_DESC_F_INDIRECT + * flag unless the VIRTIO_F_INDIRECT_DESC feature was + * negotiated. + */ + if (!(vq->dev->features_accepted & + (1<dev->name); + + /* + * 2.4.5.3.1: + * + * The driver MUST NOT set the VIRTQ_DESC_F_INDIRECT + * flag within an indirect descriptor (ie. only one + * table per descriptor). + */ + if (desc != vq->vring.desc) + errx(1, "%s: Indirect within indirect", + vq->dev->name); + + /* + * Proposed update VIRTIO-134 spells this out: + * + * A driver MUST NOT set both VIRTQ_DESC_F_INDIRECT + * and VIRTQ_DESC_F_NEXT in flags. + */ + if (desc[i].flags & VRING_DESC_F_NEXT) + errx(1, "%s: indirect and next together", + vq->dev->name); + if (desc[i].len % sizeof(struct vring_desc)) errx(1, "Invalid size for indirect buffer table"); + /* + * 2.4.5.3.2: + * + * The device MUST ignore the write-only flag + * (flags&VIRTQ_DESC_F_WRITE) in the descriptor that + * refers to an indirect table. + * + * We ignore it here: :) + */ max = desc[i].len / sizeof(struct vring_desc); desc = check_pointer(desc[i].addr, desc[i].len); i = 0; + + /* 2.4.5.3.1: + * + * A driver MUST NOT create a descriptor chain longer + * than the Queue Size of the device. + */ + if (max > vq->pci_config.queue_size) + errx(1, "%s: indirect has too many entries", + vq->dev->name); } /* Grab the first descriptor, and check it's OK. */ @@ -1082,6 +1162,7 @@ static void reset_device(struct device *dev) } } dev->running = false; + dev->wrote_features_ok = false; /* Now we care if threads die. */ signal(SIGCHLD, (void *)kill_launcher); @@ -1703,6 +1784,18 @@ static void check_virtqueue(struct device *d, struct virtqueue *vq) || vq->pci_config.queue_used_hi) errx(1, "%s: invalid 64-bit queue address", d->name); + /* + * 2.4.1: + * + * The driver MUST ensure that the physical address of the first byte + * of each virtqueue part is a multiple of the specified alignment + * value in the above table. + */ + if (vq->pci_config.queue_desc_lo % 16 + || vq->pci_config.queue_avail_lo % 2 + || vq->pci_config.queue_used_lo % 4) + errx(1, "%s: invalid alignment in queue addresses", d->name); + /* Initialize the virtqueue and check they're all in range. */ vq->vring.num = vq->pci_config.queue_size; vq->vring.desc = check_pointer(vq->pci_config.queue_desc_lo, @@ -1715,6 +1808,16 @@ static void check_virtqueue(struct device *d, struct virtqueue *vq) sizeof(*vq->vring.used) + (sizeof(vq->vring.used->ring[0]) * vq->vring.num)); + + /* + * 2.4.9.1: + * + * The driver MUST initialize flags in the used ring to 0 + * when allocating the used ring. + */ + if (vq->vring.used->flags != 0) + errx(1, "%s: invalid initial used.flags %#x", + d->name, vq->vring.used->flags); } static void start_virtqueue(struct virtqueue *vq) @@ -1768,12 +1871,12 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) d->mmio->cfg.device_feature = (d->features >> 32); else d->mmio->cfg.device_feature = 0; - goto write_through32; + goto feature_write_through32; case offsetof(struct virtio_pci_mmio, cfg.guest_feature_select): if (val > 1) errx(1, "%s: Unexpected driver select %u", d->name, val); - goto write_through32; + goto feature_write_through32; case offsetof(struct virtio_pci_mmio, cfg.guest_feature): if (d->mmio->cfg.guest_feature_select == 0) { d->features_accepted &= ~((u64)0xFFFFFFFF); @@ -1783,11 +1886,19 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) d->features_accepted &= 0xFFFFFFFF; d->features_accepted |= ((u64)val) << 32; } + /* + * 2.2.1: + * + * The driver MUST NOT accept a feature which the device did + * not offer + */ if (d->features_accepted & ~d->features) errx(1, "%s: over-accepted features %#llx of %#llx", d->name, d->features_accepted, d->features); - goto write_through32; - case offsetof(struct virtio_pci_mmio, cfg.device_status): + goto feature_write_through32; + case offsetof(struct virtio_pci_mmio, cfg.device_status): { + u8 prev; + verbose("%s: device status -> %#x\n", d->name, val); /* * 4.1.4.3.1: @@ -1795,8 +1906,15 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) * The device MUST reset when 0 is written to device_status, * and present a 0 in device_status once that is done. */ - if (val == 0) + if (val == 0) { reset_device(d); + goto write_through8; + } + + /* 2.1.1: The driver MUST NOT clear a device status bit. */ + if (d->mmio->cfg.device_status & ~val) + errx(1, "%s: unset of device status bit %#x -> %#x", + d->name, d->mmio->cfg.device_status, val); /* * 2.1.2: @@ -1808,7 +1926,67 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) && !(d->mmio->cfg.device_status & VIRTIO_CONFIG_S_DRIVER_OK)) start_virtqueues(d); + /* + * 3.1.1: + * + * The driver MUST follow this sequence to initialize a device: + * - Reset the device. + * - Set the ACKNOWLEDGE status bit: the guest OS has + * notice the device. + * - Set the DRIVER status bit: the guest OS knows how + * to drive the device. + * - Read device feature bits, and write the subset + * of feature bits understood by the OS and driver + * to the device. During this step the driver MAY + * read (but MUST NOT write) the device-specific + * configuration fields to check that it can + * support the device before accepting it. + * - Set the FEATURES_OK status bit. The driver + * MUST not accept new feature bits after this + * step. + * - Re-read device status to ensure the FEATURES_OK + * bit is still set: otherwise, the device does + * not support our subset of features and the + * device is unusable. + * - Perform device-specific setup, including + * discovery of virtqueues for the device, + * optional per-bus setup, reading and possibly + * writing the device’s virtio configuration + * space, and population of virtqueues. + * - Set the DRIVER_OK status bit. At this point the + * device is “live”. + */ + prev = 0; + switch (val & ~d->mmio->cfg.device_status) { + case VIRTIO_CONFIG_S_DRIVER_OK: + prev |= VIRTIO_CONFIG_S_FEATURES_OK; /* fall thru */ + case VIRTIO_CONFIG_S_FEATURES_OK: + prev |= VIRTIO_CONFIG_S_DRIVER; /* fall thru */ + case VIRTIO_CONFIG_S_DRIVER: + prev |= VIRTIO_CONFIG_S_ACKNOWLEDGE; /* fall thru */ + case VIRTIO_CONFIG_S_ACKNOWLEDGE: + break; + default: + errx(1, "%s: unknown device status bit %#x -> %#x", + d->name, d->mmio->cfg.device_status, val); + } + if (d->mmio->cfg.device_status != prev) + errx(1, "%s: unexpected status transition %#x -> %#x", + d->name, d->mmio->cfg.device_status, val); + + /* If they just wrote FEATURES_OK, we make sure they read */ + switch (val & ~d->mmio->cfg.device_status) { + case VIRTIO_CONFIG_S_FEATURES_OK: + d->wrote_features_ok = true; + break; + case VIRTIO_CONFIG_S_DRIVER_OK: + if (d->wrote_features_ok) + errx(1, "%s: did not re-read FEATURES_OK", + d->name); + break; + } goto write_through8; + } case offsetof(struct virtio_pci_mmio, cfg.queue_select): vq = vq_by_num(d, val); /* @@ -1844,7 +2022,9 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) case offsetof(struct virtio_pci_mmio, cfg.queue_msix_vector): errx(1, "%s: attempt to set MSIX vector to %u", d->name, val); - case offsetof(struct virtio_pci_mmio, cfg.queue_enable): + case offsetof(struct virtio_pci_mmio, cfg.queue_enable): { + struct virtqueue *vq = vq_by_num(d, d->mmio->cfg.queue_select); + /* * 4.1.4.3.2: * @@ -1852,17 +2032,27 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) */ if (val != 1) errx(1, "%s: setting queue_enable to %u", d->name, val); - d->mmio->cfg.queue_enable = val; - save_vq_config(&d->mmio->cfg, - vq_by_num(d, d->mmio->cfg.queue_select)); + /* - * 4.1.4.3.2: + * 3.1.1: * - * The driver MUST configure the other virtqueue fields before - * enabling the virtqueue with queue_enable. + * 7. Perform device-specific setup, including discovery of + * virtqueues for the device, optional per-bus setup, + * reading and possibly writing the device’s virtio + * configuration space, and population of virtqueues. + * 8. Set the DRIVER_OK status bit. + * + * All our devices require all virtqueues to be enabled, so + * they should have done that before setting DRIVER_OK. */ - check_virtqueue(d, vq_by_num(d, d->mmio->cfg.queue_select)); + if (d->mmio->cfg.device_status & VIRTIO_CONFIG_S_DRIVER_OK) + errx(1, "%s: enabling vs after DRIVER_OK", d->name); + + d->mmio->cfg.queue_enable = val; + save_vq_config(&d->mmio->cfg, vq); + check_virtqueue(d, vq); goto write_through16; + } case offsetof(struct virtio_pci_mmio, cfg.queue_notify_off): errx(1, "%s: attempt to write to queue_notify_off", d->name); case offsetof(struct virtio_pci_mmio, cfg.queue_desc_lo): @@ -1880,6 +2070,26 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) if (d->mmio->cfg.queue_enable) errx(1, "%s: changing queue on live device", d->name); + + /* + * 3.1.1: + * + * The driver MUST follow this sequence to initialize a device: + *... + * 5. Set the FEATURES_OK status bit. The driver MUST not + * accept new feature bits after this step. + */ + if (!(d->mmio->cfg.device_status & VIRTIO_CONFIG_S_FEATURES_OK)) + errx(1, "%s: enabling vs before FEATURES_OK", d->name); + + /* + * 6. Re-read device status to ensure the FEATURES_OK bit is + * still set... + */ + if (d->wrote_features_ok) + errx(1, "%s: didn't re-read FEATURES_OK before setup", + d->name); + goto write_through32; case offsetof(struct virtio_pci_mmio, notify): vq = vq_by_num(d, val); @@ -1909,6 +2119,27 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) errx(1, "%s: Unexpected write to offset %u", d->name, off); } +feature_write_through32: + /* + * 3.1.1: + * + * The driver MUST follow this sequence to initialize a device: + *... + * - Set the DRIVER status bit: the guest OS knows how + * to drive the device. + * - Read device feature bits, and write the subset + * of feature bits understood by the OS and driver + * to the device. + *... + * - Set the FEATURES_OK status bit. The driver MUST not + * accept new feature bits after this step. + */ + if (!(d->mmio->cfg.device_status & VIRTIO_CONFIG_S_DRIVER)) + errx(1, "%s: feature write before VIRTIO_CONFIG_S_DRIVER", + d->name); + if (d->mmio->cfg.device_status & VIRTIO_CONFIG_S_FEATURES_OK) + errx(1, "%s: feature write after VIRTIO_CONFIG_S_FEATURES_OK", + d->name); /* * 4.1.3.1: @@ -1951,12 +2182,29 @@ static u32 emulate_mmio_read(struct device *d, u32 off, u32 mask) case offsetof(struct virtio_pci_mmio, cfg.device_feature): case offsetof(struct virtio_pci_mmio, cfg.guest_feature_select): case offsetof(struct virtio_pci_mmio, cfg.guest_feature): + /* + * 3.1.1: + * + * The driver MUST follow this sequence to initialize a device: + *... + * - Set the DRIVER status bit: the guest OS knows how + * to drive the device. + * - Read device feature bits, and write the subset + * of feature bits understood by the OS and driver + * to the device. + */ + if (!(d->mmio->cfg.device_status & VIRTIO_CONFIG_S_DRIVER)) + errx(1, "%s: feature read before VIRTIO_CONFIG_S_DRIVER", + d->name); goto read_through32; case offsetof(struct virtio_pci_mmio, cfg.msix_config): errx(1, "%s: read of msix_config", d->name); case offsetof(struct virtio_pci_mmio, cfg.num_queues): goto read_through16; case offsetof(struct virtio_pci_mmio, cfg.device_status): + /* As they did read, any write of FEATURES_OK is now fine. */ + d->wrote_features_ok = false; + goto read_through8; case offsetof(struct virtio_pci_mmio, cfg.config_generation): /* * 4.1.4.3.1: @@ -1971,6 +2219,15 @@ static u32 emulate_mmio_read(struct device *d, u32 off, u32 mask) */ goto read_through8; case offsetof(struct virtio_pci_mmio, notify): + /* + * 3.1.1: + * + * The driver MUST NOT notify the device before setting + * DRIVER_OK. + */ + if (!(d->mmio->cfg.device_status & VIRTIO_CONFIG_S_DRIVER_OK)) + errx(1, "%s: notify before VIRTIO_CONFIG_S_DRIVER_OK", + d->name); goto read_through16; case offsetof(struct virtio_pci_mmio, isr): if (mask != 0xFF) @@ -1992,6 +2249,23 @@ static u32 emulate_mmio_read(struct device *d, u32 off, u32 mask) if (off > d->mmio_size - 4) errx(1, "%s: read past end (%#x)", d->name, getreg(eip)); + + /* + * 3.1.1: + * The driver MUST follow this sequence to initialize a device: + *... + * 3. Set the DRIVER status bit: the guest OS knows how to + * drive the device. + * 4. Read device feature bits, and write the subset of + * feature bits understood by the OS and driver to the + * device. During this step the driver MAY read (but MUST NOT + * write) the device-specific configuration fields to check + * that it can support the device before accepting it. + */ + if (!(d->mmio->cfg.device_status & VIRTIO_CONFIG_S_DRIVER)) + errx(1, "%s: config read before VIRTIO_CONFIG_S_DRIVER", + d->name); + if (mask == 0xFFFFFFFF) goto read_through32; else if (mask == 0xFFFF) @@ -2200,6 +2474,10 @@ static void init_pci_config(struct pci_config *pci, u16 type, * * The device MUST either present notify_off_multiplier as an even * power of 2, or present notify_off_multiplier as 0. + * + * 2.1.2: + * + * The device MUST initialize device status to 0 upon reset. */ memset(pci, 0, sizeof(*pci)); @@ -2340,6 +2618,7 @@ static struct device *new_pci_device(const char *name, u16 type, dev->name = name; dev->vq = NULL; dev->running = false; + dev->wrote_features_ok = false; dev->mmio_size = sizeof(struct virtio_pci_mmio); dev->mmio = calloc(1, dev->mmio_size); dev->features = (u64)1 << VIRTIO_F_VERSION_1; -- cgit v1.2.3 From 17c56d6de8e809ac57bf4c93d504f5336eb03dd1 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Fri, 13 Feb 2015 17:13:43 +1030 Subject: tools/lguest: give virtqueues names for better error messages Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index bc444aff2333..70ee62a0eb9a 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -200,6 +200,9 @@ struct virtqueue { /* Which device owns me. */ struct device *dev; + /* Name for printing errors. */ + const char *name; + /* The actual ring of buffers. */ struct vring vring; @@ -2366,7 +2369,8 @@ static void emulate_mmio(unsigned long paddr, const u8 *insn) * routines to allocate and manage them. */ static void add_pci_virtqueue(struct device *dev, - void (*service)(struct virtqueue *)) + void (*service)(struct virtqueue *), + const char *name) { struct virtqueue **i, *vq = malloc(sizeof(*vq)); @@ -2374,6 +2378,7 @@ static void add_pci_virtqueue(struct device *dev, vq->next = NULL; vq->last_avail_idx = 0; vq->dev = dev; + vq->name = name; /* * This is the routine the service thread will run, and its Process ID @@ -2666,8 +2671,8 @@ static void setup_console(void) * stdin. When they put something in the output queue, we write it to * stdout. */ - add_pci_virtqueue(dev, console_input); - add_pci_virtqueue(dev, console_output); + add_pci_virtqueue(dev, console_input, "input"); + add_pci_virtqueue(dev, console_output, "output"); /* We need a configuration area for the emerg_wr early writes. */ add_pci_feature(dev, VIRTIO_CONSOLE_F_EMERG_WRITE); @@ -2838,8 +2843,8 @@ static void setup_tun_net(char *arg) dev->priv = net_info; /* Network devices need a recv and a send queue, just like console. */ - add_pci_virtqueue(dev, net_input); - add_pci_virtqueue(dev, net_output); + add_pci_virtqueue(dev, net_input, "rx"); + add_pci_virtqueue(dev, net_output, "tx"); /* * We need a socket to perform the magic network ioctls to bring up the @@ -3026,7 +3031,7 @@ static void setup_block_file(const char *filename) dev = new_pci_device("block", VIRTIO_ID_BLOCK, 0x01, 0x80); /* The device has one virtqueue, where the Guest places requests. */ - add_pci_virtqueue(dev, blk_request); + add_pci_virtqueue(dev, blk_request, "request"); /* Allocate the room for our own bookkeeping */ vblk = dev->priv = malloc(sizeof(*vblk)); @@ -3107,7 +3112,7 @@ static void setup_rng(void) dev->priv = rng_info; /* The device has one virtqueue, where the Guest places inbufs. */ - add_pci_virtqueue(dev, rng_input); + add_pci_virtqueue(dev, rng_input, "input"); /* We don't have any configuration space */ no_device_config(dev); -- cgit v1.2.3 From 1e1c17a7a2e5c585926eefffbea8a61d7a03a247 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Fri, 13 Feb 2015 17:13:44 +1030 Subject: tools/lguest: use common error macros in the example launcher. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 206 +++++++++++++++++++++++++------------------------- 1 file changed, 105 insertions(+), 101 deletions(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index 70ee62a0eb9a..eebe94b84e8c 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -252,6 +252,16 @@ static struct termios orig_term; #define le32_to_cpu(v32) (v32) #define le64_to_cpu(v64) (v64) +/* + * A real device would ignore weird/non-compliant driver behaviour. We + * stop and flag it, to help debugging Linux problems. + */ +#define bad_driver(d, fmt, ...) \ + errx(1, "%s: bad driver: " fmt, (d)->name, ## __VA_ARGS__) +#define bad_driver_vq(vq, fmt, ...) \ + errx(1, "%s vq %s: bad driver: " fmt, (vq)->dev->name, \ + vq->name, ## __VA_ARGS__) + /* Is this iovec empty? */ static bool iov_empty(const struct iovec iov[], unsigned int num_iov) { @@ -264,7 +274,8 @@ static bool iov_empty(const struct iovec iov[], unsigned int num_iov) } /* Take len bytes from the front of this iovec. */ -static void iov_consume(struct iovec iov[], unsigned num_iov, +static void iov_consume(struct device *d, + struct iovec iov[], unsigned num_iov, void *dest, unsigned len) { unsigned int i; @@ -282,7 +293,7 @@ static void iov_consume(struct iovec iov[], unsigned num_iov, len -= used; } if (len != 0) - errx(1, "iovec too short!"); + bad_driver(d, "iovec too short!"); } /*L:100 @@ -618,7 +629,8 @@ static void tell_kernel(unsigned long start) * we have a convenient routine which checks it and exits with an error message * if something funny is going on: */ -static void *_check_pointer(unsigned long addr, unsigned int size, +static void *_check_pointer(struct device *d, + unsigned long addr, unsigned int size, unsigned int line) { /* @@ -626,7 +638,8 @@ static void *_check_pointer(unsigned long addr, unsigned int size, * or addr + size wraps around. */ if ((addr + size) > guest_limit || (addr + size) < addr) - errx(1, "%s:%i: Invalid address %#lx", __FILE__, line, addr); + bad_driver(d, "%s:%i: Invalid address %#lx", + __FILE__, line, addr); /* * We return a pointer for the caller's convenience, now we know it's * safe to use. @@ -634,14 +647,14 @@ static void *_check_pointer(unsigned long addr, unsigned int size, return from_guest_phys(addr); } /* A macro which transparently hands the line number to the real function. */ -#define check_pointer(addr,size) _check_pointer(addr, size, __LINE__) +#define check_pointer(d,addr,size) _check_pointer(d, addr, size, __LINE__) /* * Each buffer in the virtqueues is actually a chain of descriptors. This * function returns the next descriptor in the chain, or vq->vring.num if we're * at the end. */ -static unsigned next_desc(struct vring_desc *desc, +static unsigned next_desc(struct device *d, struct vring_desc *desc, unsigned int i, unsigned int max) { unsigned int next; @@ -656,7 +669,7 @@ static unsigned next_desc(struct vring_desc *desc, wmb(); if (next >= max) - errx(1, "Desc next is %u", next); + bad_driver(d, "Desc next is %u", next); return next; } @@ -681,8 +694,7 @@ static void trigger_irq(struct virtqueue *vq) * The driver MUST set flags to 0 or 1. */ if (vq->vring.avail->flags > 1) - errx(1, "%s: avail->flags = %u\n", - vq->dev->name, vq->vring.avail->flags); + bad_driver_vq(vq, "avail->flags = %u\n", vq->vring.avail->flags); /* * 2.4.7.2: @@ -769,8 +781,8 @@ static unsigned wait_for_vq_desc(struct virtqueue *vq, /* Check it isn't doing very strange things with descriptor numbers. */ if ((u16)(vq->vring.avail->idx - last_avail) > vq->vring.num) - errx(1, "Guest moved used index from %u to %u", - last_avail, vq->vring.avail->idx); + bad_driver_vq(vq, "Guest moved used index from %u to %u", + last_avail, vq->vring.avail->idx); /* * Make sure we read the descriptor number *after* we read the ring @@ -787,7 +799,7 @@ static unsigned wait_for_vq_desc(struct virtqueue *vq, /* If their number is silly, that's a fatal mistake. */ if (head >= vq->vring.num) - errx(1, "Guest says index %u is available", head); + bad_driver_vq(vq, "Guest says index %u is available", head); /* When we start there are none of either input nor output. */ *out_num = *in_num = 0; @@ -817,8 +829,7 @@ static unsigned wait_for_vq_desc(struct virtqueue *vq, */ if (!(vq->dev->features_accepted & (1<dev->name); + bad_driver_vq(vq, "vq indirect not negotiated"); /* * 2.4.5.3.1: @@ -828,8 +839,7 @@ static unsigned wait_for_vq_desc(struct virtqueue *vq, * table per descriptor). */ if (desc != vq->vring.desc) - errx(1, "%s: Indirect within indirect", - vq->dev->name); + bad_driver_vq(vq, "Indirect within indirect"); /* * Proposed update VIRTIO-134 spells this out: @@ -838,11 +848,11 @@ static unsigned wait_for_vq_desc(struct virtqueue *vq, * and VIRTQ_DESC_F_NEXT in flags. */ if (desc[i].flags & VRING_DESC_F_NEXT) - errx(1, "%s: indirect and next together", - vq->dev->name); + bad_driver_vq(vq, "indirect and next together"); if (desc[i].len % sizeof(struct vring_desc)) - errx(1, "Invalid size for indirect buffer table"); + bad_driver_vq(vq, + "Invalid size for indirect table"); /* * 2.4.5.3.2: * @@ -854,7 +864,7 @@ static unsigned wait_for_vq_desc(struct virtqueue *vq, */ max = desc[i].len / sizeof(struct vring_desc); - desc = check_pointer(desc[i].addr, desc[i].len); + desc = check_pointer(vq->dev, desc[i].addr, desc[i].len); i = 0; /* 2.4.5.3.1: @@ -863,14 +873,14 @@ static unsigned wait_for_vq_desc(struct virtqueue *vq, * than the Queue Size of the device. */ if (max > vq->pci_config.queue_size) - errx(1, "%s: indirect has too many entries", - vq->dev->name); + bad_driver_vq(vq, + "indirect has too many entries"); } /* Grab the first descriptor, and check it's OK. */ iov[*out_num + *in_num].iov_len = desc[i].len; iov[*out_num + *in_num].iov_base - = check_pointer(desc[i].addr, desc[i].len); + = check_pointer(vq->dev, desc[i].addr, desc[i].len); /* If this is an input descriptor, increment that count. */ if (desc[i].flags & VRING_DESC_F_WRITE) (*in_num)++; @@ -880,14 +890,15 @@ static unsigned wait_for_vq_desc(struct virtqueue *vq, * to come before any input descriptors. */ if (*in_num) - errx(1, "Descriptor has out after in"); + bad_driver_vq(vq, + "Descriptor has out after in"); (*out_num)++; } /* If we've got too many, that implies a descriptor loop. */ if (*out_num + *in_num > max) - errx(1, "Looped descriptor"); - } while ((i = next_desc(desc, i, max)) != max); + bad_driver_vq(vq, "Looped descriptor"); + } while ((i = next_desc(vq->dev, desc, i, max)) != max); return head; } @@ -944,7 +955,7 @@ static void console_input(struct virtqueue *vq) /* Make sure there's a descriptor available. */ head = wait_for_vq_desc(vq, iov, &out_num, &in_num); if (out_num) - errx(1, "Output buffers in console in queue?"); + bad_driver_vq(vq, "Output buffers in console in queue?"); /* Read into it. This is where we usually wait. */ len = readv(STDIN_FILENO, iov, in_num); @@ -997,7 +1008,7 @@ static void console_output(struct virtqueue *vq) /* We usually wait in here, for the Guest to give us something. */ head = wait_for_vq_desc(vq, iov, &out, &in); if (in) - errx(1, "Input buffers in console output queue?"); + bad_driver_vq(vq, "Input buffers in console output queue?"); /* writev can return a partial write, so we loop here. */ while (!iov_empty(iov, out)) { @@ -1006,7 +1017,7 @@ static void console_output(struct virtqueue *vq) warn("Write to stdout gave %i (%d)", len, errno); break; } - iov_consume(iov, out, NULL, len); + iov_consume(vq->dev, iov, out, NULL, len); } /* @@ -1035,7 +1046,7 @@ static void net_output(struct virtqueue *vq) /* We usually wait in here for the Guest to give us a packet. */ head = wait_for_vq_desc(vq, iov, &out, &in); if (in) - errx(1, "Input buffers in net output queue?"); + bad_driver_vq(vq, "Input buffers in net output queue?"); /* * Send the whole thing through to /dev/net/tun. It expects the exact * same format: what a coincidence! @@ -1083,7 +1094,7 @@ static void net_input(struct virtqueue *vq) */ head = wait_for_vq_desc(vq, iov, &out, &in); if (out) - errx(1, "Output buffers in net input queue?"); + bad_driver_vq(vq, "Output buffers in net input queue?"); /* * If it looks like we'll block reading from the tun device, send them @@ -1466,7 +1477,8 @@ static void pci_data_ioread(u16 port, u32 mask, u32 *val) */ /* Must be bar 0 */ if (!valid_bar_access(d, &d->config.cfg_access)) - errx(1, "Invalid cfg_access to bar%u, offset %u len %u", + bad_driver(d, + "Invalid cfg_access to bar%u, offset %u len %u", d->config.cfg_access.cap.bar, d->config.cfg_access.cap.offset, d->config.cfg_access.cap.length); @@ -1785,7 +1797,7 @@ static void check_virtqueue(struct device *d, struct virtqueue *vq) if (vq->pci_config.queue_desc_hi || vq->pci_config.queue_avail_hi || vq->pci_config.queue_used_hi) - errx(1, "%s: invalid 64-bit queue address", d->name); + bad_driver_vq(vq, "invalid 64-bit queue address"); /* * 2.4.1: @@ -1797,17 +1809,20 @@ static void check_virtqueue(struct device *d, struct virtqueue *vq) if (vq->pci_config.queue_desc_lo % 16 || vq->pci_config.queue_avail_lo % 2 || vq->pci_config.queue_used_lo % 4) - errx(1, "%s: invalid alignment in queue addresses", d->name); + bad_driver_vq(vq, "invalid alignment in queue addresses"); /* Initialize the virtqueue and check they're all in range. */ vq->vring.num = vq->pci_config.queue_size; - vq->vring.desc = check_pointer(vq->pci_config.queue_desc_lo, + vq->vring.desc = check_pointer(vq->dev, + vq->pci_config.queue_desc_lo, sizeof(*vq->vring.desc) * vq->vring.num); - vq->vring.avail = check_pointer(vq->pci_config.queue_avail_lo, + vq->vring.avail = check_pointer(vq->dev, + vq->pci_config.queue_avail_lo, sizeof(*vq->vring.avail) + (sizeof(vq->vring.avail->ring[0]) * vq->vring.num)); - vq->vring.used = check_pointer(vq->pci_config.queue_used_lo, + vq->vring.used = check_pointer(vq->dev, + vq->pci_config.queue_used_lo, sizeof(*vq->vring.used) + (sizeof(vq->vring.used->ring[0]) * vq->vring.num)); @@ -1819,8 +1834,8 @@ static void check_virtqueue(struct device *d, struct virtqueue *vq) * when allocating the used ring. */ if (vq->vring.used->flags != 0) - errx(1, "%s: invalid initial used.flags %#x", - d->name, vq->vring.used->flags); + bad_driver_vq(vq, "invalid initial used.flags %#x", + vq->vring.used->flags); } static void start_virtqueue(struct virtqueue *vq) @@ -1877,8 +1892,7 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) goto feature_write_through32; case offsetof(struct virtio_pci_mmio, cfg.guest_feature_select): if (val > 1) - errx(1, "%s: Unexpected driver select %u", - d->name, val); + bad_driver(d, "Unexpected driver select %u", val); goto feature_write_through32; case offsetof(struct virtio_pci_mmio, cfg.guest_feature): if (d->mmio->cfg.guest_feature_select == 0) { @@ -1896,8 +1910,8 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) * not offer */ if (d->features_accepted & ~d->features) - errx(1, "%s: over-accepted features %#llx of %#llx", - d->name, d->features_accepted, d->features); + bad_driver(d, "over-accepted features %#llx of %#llx", + d->features_accepted, d->features); goto feature_write_through32; case offsetof(struct virtio_pci_mmio, cfg.device_status): { u8 prev; @@ -1916,8 +1930,8 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) /* 2.1.1: The driver MUST NOT clear a device status bit. */ if (d->mmio->cfg.device_status & ~val) - errx(1, "%s: unset of device status bit %#x -> %#x", - d->name, d->mmio->cfg.device_status, val); + bad_driver(d, "unset of device status bit %#x -> %#x", + d->mmio->cfg.device_status, val); /* * 2.1.2: @@ -1970,12 +1984,12 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) case VIRTIO_CONFIG_S_ACKNOWLEDGE: break; default: - errx(1, "%s: unknown device status bit %#x -> %#x", - d->name, d->mmio->cfg.device_status, val); + bad_driver(d, "unknown device status bit %#x -> %#x", + d->mmio->cfg.device_status, val); } if (d->mmio->cfg.device_status != prev) - errx(1, "%s: unexpected status transition %#x -> %#x", - d->name, d->mmio->cfg.device_status, val); + bad_driver(d, "unexpected status transition %#x -> %#x", + d->mmio->cfg.device_status, val); /* If they just wrote FEATURES_OK, we make sure they read */ switch (val & ~d->mmio->cfg.device_status) { @@ -1984,8 +1998,7 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) break; case VIRTIO_CONFIG_S_DRIVER_OK: if (d->wrote_features_ok) - errx(1, "%s: did not re-read FEATURES_OK", - d->name); + bad_driver(d, "did not re-read FEATURES_OK"); break; } goto write_through8; @@ -2017,14 +2030,12 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) * to queue_size. */ if (val & (val-1)) - errx(1, "%s: invalid queue size %u\n", d->name, val); + bad_driver(d, "invalid queue size %u", val); if (d->mmio->cfg.queue_enable) - errx(1, "%s: changing queue size on live device", - d->name); + bad_driver(d, "changing queue size on live device"); goto write_through16; case offsetof(struct virtio_pci_mmio, cfg.queue_msix_vector): - errx(1, "%s: attempt to set MSIX vector to %u", - d->name, val); + bad_driver(d, "attempt to set MSIX vector to %u", val); case offsetof(struct virtio_pci_mmio, cfg.queue_enable): { struct virtqueue *vq = vq_by_num(d, d->mmio->cfg.queue_select); @@ -2034,7 +2045,7 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) * The driver MUST NOT write a 0 to queue_enable. */ if (val != 1) - errx(1, "%s: setting queue_enable to %u", d->name, val); + bad_driver(d, "setting queue_enable to %u", val); /* * 3.1.1: @@ -2049,7 +2060,7 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) * they should have done that before setting DRIVER_OK. */ if (d->mmio->cfg.device_status & VIRTIO_CONFIG_S_DRIVER_OK) - errx(1, "%s: enabling vs after DRIVER_OK", d->name); + bad_driver(d, "enabling vq after DRIVER_OK"); d->mmio->cfg.queue_enable = val; save_vq_config(&d->mmio->cfg, vq); @@ -2057,7 +2068,7 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) goto write_through16; } case offsetof(struct virtio_pci_mmio, cfg.queue_notify_off): - errx(1, "%s: attempt to write to queue_notify_off", d->name); + bad_driver(d, "attempt to write to queue_notify_off"); case offsetof(struct virtio_pci_mmio, cfg.queue_desc_lo): case offsetof(struct virtio_pci_mmio, cfg.queue_desc_hi): case offsetof(struct virtio_pci_mmio, cfg.queue_avail_lo): @@ -2071,8 +2082,7 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) * enabling the virtqueue with queue_enable. */ if (d->mmio->cfg.queue_enable) - errx(1, "%s: changing queue on live device", - d->name); + bad_driver(d, "changing queue on live device"); /* * 3.1.1: @@ -2083,26 +2093,25 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) * accept new feature bits after this step. */ if (!(d->mmio->cfg.device_status & VIRTIO_CONFIG_S_FEATURES_OK)) - errx(1, "%s: enabling vs before FEATURES_OK", d->name); + bad_driver(d, "setting up vq before FEATURES_OK"); /* * 6. Re-read device status to ensure the FEATURES_OK bit is * still set... */ if (d->wrote_features_ok) - errx(1, "%s: didn't re-read FEATURES_OK before setup", - d->name); + bad_driver(d, "didn't re-read FEATURES_OK before setup"); goto write_through32; case offsetof(struct virtio_pci_mmio, notify): vq = vq_by_num(d, val); if (!vq) - errx(1, "Invalid vq notification on %u", val); + bad_driver(d, "Invalid vq notification on %u", val); /* Notify the process handling this vq by adding 1 to eventfd */ write(vq->eventfd, "\1\0\0\0\0\0\0\0", 8); goto write_through16; case offsetof(struct virtio_pci_mmio, isr): - errx(1, "%s: Unexpected write to isr", d->name); + bad_driver(d, "Unexpected write to isr"); /* Weird corner case: write to emerg_wr of console */ case sizeof(struct virtio_pci_mmio) + offsetof(struct virtio_console_config, emerg_wr): @@ -2119,7 +2128,7 @@ static void emulate_mmio_write(struct device *d, u32 off, u32 val, u32 mask) * The driver MUST NOT write to device_feature, num_queues, * config_generation or queue_notify_off. */ - errx(1, "%s: Unexpected write to offset %u", d->name, off); + bad_driver(d, "Unexpected write to offset %u", off); } feature_write_through32: @@ -2138,11 +2147,9 @@ feature_write_through32: * accept new feature bits after this step. */ if (!(d->mmio->cfg.device_status & VIRTIO_CONFIG_S_DRIVER)) - errx(1, "%s: feature write before VIRTIO_CONFIG_S_DRIVER", - d->name); + bad_driver(d, "feature write before VIRTIO_CONFIG_S_DRIVER"); if (d->mmio->cfg.device_status & VIRTIO_CONFIG_S_FEATURES_OK) - errx(1, "%s: feature write after VIRTIO_CONFIG_S_FEATURES_OK", - d->name); + bad_driver(d, "feature write after VIRTIO_CONFIG_S_FEATURES_OK"); /* * 4.1.3.1: @@ -2153,8 +2160,8 @@ feature_write_through32: */ write_through32: if (mask != 0xFFFFFFFF) { - errx(1, "%s: non-32-bit write to offset %u (%#x)", - d->name, off, getreg(eip)); + bad_driver(d, "non-32-bit write to offset %u (%#x)", + off, getreg(eip)); return; } memcpy((char *)d->mmio + off, &val, 4); @@ -2162,15 +2169,15 @@ write_through32: write_through16: if (mask != 0xFFFF) - errx(1, "%s: non-16-bit (%#x) write to offset %u (%#x)", - d->name, mask, off, getreg(eip)); + bad_driver(d, "non-16-bit write to offset %u (%#x)", + off, getreg(eip)); memcpy((char *)d->mmio + off, &val, 2); return; write_through8: if (mask != 0xFF) - errx(1, "%s: non-8-bit write to offset %u (%#x)", - d->name, off, getreg(eip)); + bad_driver(d, "non-8-bit write to offset %u (%#x)", + off, getreg(eip)); memcpy((char *)d->mmio + off, &val, 1); return; } @@ -2197,11 +2204,11 @@ static u32 emulate_mmio_read(struct device *d, u32 off, u32 mask) * to the device. */ if (!(d->mmio->cfg.device_status & VIRTIO_CONFIG_S_DRIVER)) - errx(1, "%s: feature read before VIRTIO_CONFIG_S_DRIVER", - d->name); + bad_driver(d, + "feature read before VIRTIO_CONFIG_S_DRIVER"); goto read_through32; case offsetof(struct virtio_pci_mmio, cfg.msix_config): - errx(1, "%s: read of msix_config", d->name); + bad_driver(d, "read of msix_config"); case offsetof(struct virtio_pci_mmio, cfg.num_queues): goto read_through16; case offsetof(struct virtio_pci_mmio, cfg.device_status): @@ -2229,13 +2236,12 @@ static u32 emulate_mmio_read(struct device *d, u32 off, u32 mask) * DRIVER_OK. */ if (!(d->mmio->cfg.device_status & VIRTIO_CONFIG_S_DRIVER_OK)) - errx(1, "%s: notify before VIRTIO_CONFIG_S_DRIVER_OK", - d->name); + bad_driver(d, "notify before VIRTIO_CONFIG_S_DRIVER_OK"); goto read_through16; case offsetof(struct virtio_pci_mmio, isr): if (mask != 0xFF) - errx(1, "%s: non-8-bit read from offset %u (%#x)", - d->name, off, getreg(eip)); + bad_driver(d, "non-8-bit read from offset %u (%#x)", + off, getreg(eip)); isr = d->mmio->isr; /* * 4.1.4.5.1: @@ -2245,13 +2251,11 @@ static u32 emulate_mmio_read(struct device *d, u32 off, u32 mask) d->mmio->isr = 0; return isr; case offsetof(struct virtio_pci_mmio, padding): - errx(1, "%s: read from padding (%#x)", - d->name, getreg(eip)); + bad_driver(d, "read from padding (%#x)", getreg(eip)); default: /* Read from device config space, beware unaligned overflow */ if (off > d->mmio_size - 4) - errx(1, "%s: read past end (%#x)", - d->name, getreg(eip)); + bad_driver(d, "read past end (%#x)", getreg(eip)); /* * 3.1.1: @@ -2266,8 +2270,8 @@ static u32 emulate_mmio_read(struct device *d, u32 off, u32 mask) * that it can support the device before accepting it. */ if (!(d->mmio->cfg.device_status & VIRTIO_CONFIG_S_DRIVER)) - errx(1, "%s: config read before VIRTIO_CONFIG_S_DRIVER", - d->name); + bad_driver(d, + "config read before VIRTIO_CONFIG_S_DRIVER"); if (mask == 0xFFFFFFFF) goto read_through32; @@ -2286,22 +2290,22 @@ static u32 emulate_mmio_read(struct device *d, u32 off, u32 mask) */ read_through32: if (mask != 0xFFFFFFFF) - errx(1, "%s: non-32-bit read to offset %u (%#x)", - d->name, off, getreg(eip)); + bad_driver(d, "non-32-bit read to offset %u (%#x)", + off, getreg(eip)); memcpy(&val, (char *)d->mmio + off, 4); return val; read_through16: if (mask != 0xFFFF) - errx(1, "%s: non-16-bit read to offset %u (%#x)", - d->name, off, getreg(eip)); + bad_driver(d, "non-16-bit read to offset %u (%#x)", + off, getreg(eip)); memcpy(&val, (char *)d->mmio + off, 2); return val; read_through8: if (mask != 0xFF) - errx(1, "%s: non-8-bit read to offset %u (%#x)", - d->name, off, getreg(eip)); + bad_driver(d, "non-8-bit read to offset %u (%#x)", + off, getreg(eip)); memcpy(&val, (char *)d->mmio + off, 1); return val; } @@ -2943,7 +2947,7 @@ static void blk_request(struct virtqueue *vq) head = wait_for_vq_desc(vq, iov, &out_num, &in_num); /* Copy the output header from the front of the iov (adjusts iov) */ - iov_consume(iov, out_num, &out, sizeof(out)); + iov_consume(vq->dev, iov, out_num, &out, sizeof(out)); /* Find and trim end of iov input array, for our status byte. */ in = NULL; @@ -2955,7 +2959,7 @@ static void blk_request(struct virtqueue *vq) } } if (!in) - errx(1, "Bad virtblk cmd with no room for status"); + bad_driver_vq(vq, "Bad virtblk cmd with no room for status"); /* * For historical reasons, block operations are expressed in 512 byte @@ -2985,7 +2989,7 @@ static void blk_request(struct virtqueue *vq) /* Trim it back to the correct length */ ftruncate64(vblk->fd, vblk->len); /* Die, bad Guest, die. */ - errx(1, "Write past end %llu+%u", off, ret); + bad_driver_vq(vq, "Write past end %llu+%u", off, ret); } wlen = sizeof(*in); @@ -3078,7 +3082,7 @@ static void rng_input(struct virtqueue *vq) /* First we need a buffer from the Guests's virtqueue. */ head = wait_for_vq_desc(vq, iov, &out_num, &in_num); if (out_num) - errx(1, "Output buffers in rng?"); + bad_driver_vq(vq, "Output buffers in rng?"); /* * Just like the console write, we loop to cover the whole iovec. @@ -3088,7 +3092,7 @@ static void rng_input(struct virtqueue *vq) len = readv(rng_info->rfd, iov, in_num); if (len <= 0) err(1, "Read from /dev/urandom gave %i", len); - iov_consume(iov, in_num, NULL, len); + iov_consume(vq->dev, iov, in_num, NULL, len); totlen += len; } -- cgit v1.2.3 From 206ad06b2e88a3d826c99da8c8b3ed98e287ad87 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Fri, 13 Feb 2015 17:13:44 +1030 Subject: tools/lguest: don't use legacy definitions for net device in example launcher. Signed-off-by: Rusty Russell --- tools/lguest/lguest.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index eebe94b84e8c..e44052483ed9 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -66,6 +66,7 @@ typedef uint8_t u8; #define VIRTIO_CONFIG_NO_LEGACY #define VIRTIO_PCI_NO_LEGACY #define VIRTIO_BLK_NO_LEGACY +#define VIRTIO_NET_NO_LEGACY /* Use in-kernel ones, which defines VIRTIO_F_VERSION_1 */ #include "../../include/uapi/linux/virtio_config.h" @@ -2816,7 +2817,7 @@ static int get_tun_device(char tapif[IFNAMSIZ]) * about our expanded header (which is called * virtio_net_hdr_mrg_rxbuf in the legacy system). */ - vnet_hdr_sz = sizeof(struct virtio_net_hdr_mrg_rxbuf); + vnet_hdr_sz = sizeof(struct virtio_net_hdr_v1); if (ioctl(netfd, TUNSETVNETHDRSZ, &vnet_hdr_sz) != 0) err(1, "Setting tun header size to %u", vnet_hdr_sz); -- cgit v1.2.3 From e17fdaeaec066c725f73cd3cda1feae52b2646f5 Mon Sep 17 00:00:00 2001 From: Bruce Merry Date: Thu, 15 Jan 2015 11:20:22 +0200 Subject: perf bench: Fix order of arguments to memcpy_alloc_mem This was causing the destination instead of the source to be filled. As a result, the source was typically all mapped to one zero page, and hence very cacheable. Signed-off-by: Bruce Merry Acked-by: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20150115092022.GA11292@kryton Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/bench/mem-memcpy.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/bench/mem-memcpy.c b/tools/perf/bench/mem-memcpy.c index 6c14afe8c1b1..db1d3a29d97f 100644 --- a/tools/perf/bench/mem-memcpy.c +++ b/tools/perf/bench/mem-memcpy.c @@ -289,7 +289,7 @@ static u64 do_memcpy_cycle(const struct routine *r, size_t len, bool prefault) memcpy_t fn = r->fn.memcpy; int i; - memcpy_alloc_mem(&src, &dst, len); + memcpy_alloc_mem(&dst, &src, len); if (prefault) fn(dst, src, len); @@ -312,7 +312,7 @@ static double do_memcpy_gettimeofday(const struct routine *r, size_t len, void *src = NULL, *dst = NULL; int i; - memcpy_alloc_mem(&src, &dst, len); + memcpy_alloc_mem(&dst, &src, len); if (prefault) fn(dst, src, len); -- cgit v1.2.3 From 8eb733829cd17b9b66971f08110df7224d391d65 Mon Sep 17 00:00:00 2001 From: Josh Boyer Date: Wed, 11 Feb 2015 11:24:05 -0500 Subject: perf tools: Define _GNU_SOURCE on pthread_attr_setaffinity_np feature check The man page for pthread_attr_set_affinity_np states that _GNU_SOURCE must be defined before pthread.h is included in order to get the proper function declaration. Define this in the Makefile. Without this defined, the feature check fails on a Fedora system with gcc5 and then the perf build later fails with conflicting prototypes for the function. Signed-off-by: Josh Boyer Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Vineet Gupta Link: http://lkml.kernel.org/r/20150211162404.GA15522@hansolo.redhat.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/config/feature-checks/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/config/feature-checks/Makefile b/tools/perf/config/feature-checks/Makefile index 42ac05aaf8ac..b32ff3372514 100644 --- a/tools/perf/config/feature-checks/Makefile +++ b/tools/perf/config/feature-checks/Makefile @@ -49,7 +49,7 @@ test-hello.bin: $(BUILD) test-pthread-attr-setaffinity-np.bin: - $(BUILD) -Werror -lpthread + $(BUILD) -D_GNU_SOURCE -Werror -lpthread test-stackprotector-all.bin: $(BUILD) -Werror -fstack-protector-all -- cgit v1.2.3 From 95a09cfa3cdf94231ce511f1697754482b918d39 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Tue, 24 Feb 2015 12:46:06 +0200 Subject: perf tools: Fix pthread_attr_setaffinity_np build error MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Feature detection for pthread_attr_setaffinity_np was failing, producing this error: In file included from bench/futex-hash.c:17:0: bench/futex.h:73:19: error: conflicting types for ‘pthread_attr_setaffinity_np’ static inline int pthread_attr_setaffinity_np(pthread_attr_t *attr, ^ In file included from bench/futex.h:72:0, from bench/futex-hash.c:17: /usr/include/pthread.h:407:12: note: previous declaration of ‘pthread_attr_setaffinity_np’ was here extern int pthread_attr_setaffinity_np (pthread_attr_t *__attr, ^ make[3]: *** [bench/futex-hash.o] Error 1 make[2]: *** [bench] Error 2 make[2]: *** Waiting for unfinished jobs.... This was because compiling test-pthread-attr-setaffinity-np.c failed due to the function arguments: test-pthread-attr-setaffinity-np.c: In function ‘main’: test-pthread-attr-setaffinity-np.c:11:2: warning: null argument where non-null required (argument 3) [-Wnonnull] ret = pthread_attr_setaffinity_np(&thread_attr, 0, NULL); ^ So fix the arguments. Signed-off-by: Adrian Hunter Tested-by: Stephane Eranian Cc: Jiri Olsa Link: http://lkml.kernel.org/r/1424774766-24194-1-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/config/feature-checks/test-pthread-attr-setaffinity-np.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/config/feature-checks/test-pthread-attr-setaffinity-np.c b/tools/perf/config/feature-checks/test-pthread-attr-setaffinity-np.c index 0a0d3ecb4e8a..2b81b72eca23 100644 --- a/tools/perf/config/feature-checks/test-pthread-attr-setaffinity-np.c +++ b/tools/perf/config/feature-checks/test-pthread-attr-setaffinity-np.c @@ -5,10 +5,11 @@ int main(void) { int ret = 0; pthread_attr_t thread_attr; + cpu_set_t cs; pthread_attr_init(&thread_attr); /* don't care abt exact args, just the API itself in libpthread */ - ret = pthread_attr_setaffinity_np(&thread_attr, 0, NULL); + ret = pthread_attr_setaffinity_np(&thread_attr, sizeof(cs), &cs); return ret; } -- cgit v1.2.3 From 48536c9195ae8c2a00fd8f400bac72ab613feaab Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Tue, 24 Feb 2015 13:20:59 +0200 Subject: perf tools: Fix probing for PERF_FLAG_FD_CLOEXEC flag Commit f6edb53c4993ffe92ce521fb449d1c146cea6ec2 converted the probe to a CPU wide event first (pid == -1). For kernels that do not support the PERF_FLAG_FD_CLOEXEC flag the probe fails with EINVAL. Since this errno is not handled pid is not reset to 0 and the subsequent use of pid = -1 as an argument brings in an additional failure path if perf_event_paranoid > 0: $ perf record -- sleep 1 perf_event_open(..., 0) failed unexpectedly with error 13 (Permission denied) [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.007 MB /tmp/perf.data (11 samples) ] Also, ensure the fd of the confirmation check is closed and comment why pid = -1 is used. Needs to go to 3.18 stable tree as well. Signed-off-by: Adrian Hunter Based-on-patch-by: David Ahern Acked-by: David Ahern Cc: David Ahern Link: http://lkml.kernel.org/r/54EC610C.8000403@intel.com Cc: stable@vger.kernel.org # v3.18+ Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/cloexec.c | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/cloexec.c b/tools/perf/util/cloexec.c index 47b78b3f0325..6da965bdbc2c 100644 --- a/tools/perf/util/cloexec.c +++ b/tools/perf/util/cloexec.c @@ -25,6 +25,10 @@ static int perf_flag_probe(void) if (cpu < 0) cpu = 0; + /* + * Using -1 for the pid is a workaround to avoid gratuitous jump label + * changes. + */ while (1) { /* check cloexec flag */ fd = sys_perf_event_open(&attr, pid, cpu, -1, @@ -47,16 +51,24 @@ static int perf_flag_probe(void) err, strerror_r(err, sbuf, sizeof(sbuf))); /* not supported, confirm error related to PERF_FLAG_FD_CLOEXEC */ - fd = sys_perf_event_open(&attr, pid, cpu, -1, 0); + while (1) { + fd = sys_perf_event_open(&attr, pid, cpu, -1, 0); + if (fd < 0 && pid == -1 && errno == EACCES) { + pid = 0; + continue; + } + break; + } err = errno; + if (fd >= 0) + close(fd); + if (WARN_ONCE(fd < 0 && err != EBUSY, "perf_event_open(..., 0) failed unexpectedly with error %d (%s)\n", err, strerror_r(err, sbuf, sizeof(sbuf)))) return -1; - close(fd); - return 0; } -- cgit v1.2.3 From a73b6c199a663d64a38198f547d5c5be42163193 Mon Sep 17 00:00:00 2001 From: David Ahern Date: Wed, 18 Feb 2015 19:03:18 -0500 Subject: perf top: Fix SIGBUS on sparc64 perf-top is terminating due to SIGBUS on sparc64. git bisect points to: commit 82396986032915c1572bfb74b224fcc2e4e8ba7c Author: Arnaldo Carvalho de Melo Date: Mon Sep 8 13:26:35 2014 -0300 perf evlist: Refcount mmaps We need to know how many fds are using a perf mmap via PERF_EVENT_IOC_SET_OUTPUT, so that we can know when to ditch an mmap, refcount it. This commit added 'int refcnt' to struct perf_mmap and the addition makes the event_copy element no longer 8-byte aligned. Fix by adding __attribute__((aligned(8))) to the event_copy struct member. Signed-off-by: David Ahern Link: http://lkml.kernel.org/r/1424304198-92028-1-git-send-email-david.ahern@oracle.com [ Switched from 'int pad;' to using __attribute__, David tested/acked that ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/evlist.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index c94a9e03ecf1..e99a67632831 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -28,7 +28,7 @@ struct perf_mmap { int mask; int refcnt; unsigned int prev; - char event_copy[PERF_SAMPLE_MAX_SIZE]; + char event_copy[PERF_SAMPLE_MAX_SIZE] __attribute__((aligned(8))); }; struct perf_evlist { -- cgit v1.2.3 From e370a3d57664cd5e39c0b95d157ebc841b568409 Mon Sep 17 00:00:00 2001 From: David Ahern Date: Wed, 18 Feb 2015 19:33:37 -0500 Subject: perf symbols: Define EM_AARCH64 for older OSes 4886f2ca19f6f added an arm-64 check, but the EM_AARCH64 macro is not defined in older releases (e.g., RHEL6). Define if it is not defined. Signed-off-by: David Ahern Cc: Victor Kamensky Link: http://lkml.kernel.org/r/1424306017-96797-1-git-send-email-david.ahern@oracle.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/symbol-elf.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'tools') diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index b24f9d8727a8..33b7a2aef713 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -11,6 +11,11 @@ #include #include "debug.h" +#ifndef EM_AARCH64 +#define EM_AARCH64 183 /* ARM 64 bit */ +#endif + + #ifdef HAVE_CPLUS_DEMANGLE_SUPPORT extern char *cplus_demangle(const char *, int); -- cgit v1.2.3 From 4861f87cd3d133f03e3b39b6650f4e12f1a9e421 Mon Sep 17 00:00:00 2001 From: David Ahern Date: Wed, 18 Feb 2015 19:37:02 -0500 Subject: perf tools: Make sparc64 arch point to sparc The recent build changes cause perf to not compile for sparc64 since the arch/sparc64/Build file does not exist: /home/dahern/kernels/linux.git/tools/build/Makefile.build:40: arch/sparc64/Build: No such file or directory Fix by converting the sparc64 RAW_ARCH to sparc ARCH -- similar to what is done for x86_64. Signed-off-by: David Ahern Cc: Jiri Olsa Link: http://lkml.kernel.org/r/1424306222-96843-1-git-send-email-david.ahern@oracle.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/config/Makefile.arch | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'tools') diff --git a/tools/perf/config/Makefile.arch b/tools/perf/config/Makefile.arch index ff95a68741d1..ac8721ffa6c8 100644 --- a/tools/perf/config/Makefile.arch +++ b/tools/perf/config/Makefile.arch @@ -21,6 +21,10 @@ ifeq ($(RAW_ARCH),x86_64) endif endif +ifeq ($(RAW_ARCH),sparc64) + ARCH ?= sparc +endif + ARCH ?= $(RAW_ARCH) LP64 := $(shell echo __LP64__ | ${CC} ${CFLAGS} -E -x c - | tail -n 1) -- cgit v1.2.3 From 4cc32cb4e92622757685c8732bdfc400243a5644 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 17 Feb 2015 18:18:29 -0800 Subject: tools/thermal: tmon: add --target-temp parameter If we launch in daemon mode (--daemon), we don't have the ncurses UI, but we might want to set the target temperature still. For example, someone might stick the following in their boot script: tmon --control intel_powerclamp --target-temp 90 --log --daemon This would turn on CPU idle injection when we're around 90 degrees celsius, and would log temperature and throttling info to /var/tmp/tmon.log. Signed-off-by: Brian Norris Acked-by: Jacob Pan Reviewed-by: Florian Fainelli Signed-off-by: Zhang Rui --- tools/thermal/tmon/tmon.8 | 2 ++ tools/thermal/tmon/tmon.c | 14 ++++++++++++-- 2 files changed, 14 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/thermal/tmon/tmon.8 b/tools/thermal/tmon/tmon.8 index 0be727cb9892..02d5179803aa 100644 --- a/tools/thermal/tmon/tmon.8 +++ b/tools/thermal/tmon/tmon.8 @@ -55,6 +55,8 @@ The \fB-l --log\fP option write data to /var/tmp/tmon.log .PP The \fB-t --time-interval\fP option sets the polling interval in seconds .PP +The \fB-T --target-temp\fP option sets the initial target temperature +.PP The \fB-v --version\fP option shows the version of \fBtmon \fP .PP The \fB-z --zone\fP option sets the target therma zone instance to be controlled diff --git a/tools/thermal/tmon/tmon.c b/tools/thermal/tmon/tmon.c index 09b7c3218334..9aa19652e8e8 100644 --- a/tools/thermal/tmon/tmon.c +++ b/tools/thermal/tmon/tmon.c @@ -64,6 +64,7 @@ void usage() printf(" -h, --help show this help message\n"); printf(" -l, --log log data to /var/tmp/tmon.log\n"); printf(" -t, --time-interval sampling time interval, > 1 sec.\n"); + printf(" -T, --target-temp initial target temperature\n"); printf(" -v, --version show version\n"); printf(" -z, --zone target thermal zone id\n"); @@ -219,6 +220,7 @@ static struct option opts[] = { { "control", 1, NULL, 'c' }, { "daemon", 0, NULL, 'd' }, { "time-interval", 1, NULL, 't' }, + { "target-temp", 1, NULL, 'T' }, { "log", 0, NULL, 'l' }, { "help", 0, NULL, 'h' }, { "version", 0, NULL, 'v' }, @@ -231,7 +233,7 @@ int main(int argc, char **argv) { int err = 0; int id2 = 0, c; - double yk = 0.0; /* controller output */ + double yk = 0.0, temp; /* controller output */ int target_tz_index; if (geteuid() != 0) { @@ -239,7 +241,7 @@ int main(int argc, char **argv) exit(EXIT_FAILURE); } - while ((c = getopt_long(argc, argv, "c:dlht:vgz:", opts, &id2)) != -1) { + while ((c = getopt_long(argc, argv, "c:dlht:T:vgz:", opts, &id2)) != -1) { switch (c) { case 'c': no_control = 0; @@ -254,6 +256,14 @@ int main(int argc, char **argv) if (ticktime < 1) ticktime = 1; break; + case 'T': + temp = strtod(optarg, NULL); + if (temp < 0) { + fprintf(stderr, "error: temperature must be positive\n"); + return 1; + } + target_temp_user = temp; + break; case 'l': printf("Logging data to /var/tmp/tmon.log\n"); logging = 1; -- cgit v1.2.3 From a90b6b006c616f1a33f8ffb6939e31c8d66926a4 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 17 Feb 2015 18:18:30 -0800 Subject: tools/thermal: tmon: add min/max macros Signed-off-by: Brian Norris Acked-by: Jacob Pan Reviewed-by: Florian Fainelli Signed-off-by: Zhang Rui --- tools/thermal/tmon/tui.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'tools') diff --git a/tools/thermal/tmon/tui.c b/tools/thermal/tmon/tui.c index 89f8ef0e15c8..43c5aecf71da 100644 --- a/tools/thermal/tmon/tui.c +++ b/tools/thermal/tmon/tui.c @@ -30,6 +30,18 @@ #include "tmon.h" +#define min(x, y) ({ \ + typeof(x) _min1 = (x); \ + typeof(y) _min2 = (y); \ + (void) (&_min1 == &_min2); \ + _min1 < _min2 ? _min1 : _min2; }) + +#define max(x, y) ({ \ + typeof(x) _max1 = (x); \ + typeof(y) _max2 = (y); \ + (void) (&_max1 == &_max2); \ + _max1 > _max2 ? _max1 : _max2; }) + static PANEL *data_panel; static PANEL *dialogue_panel; static PANEL *top; -- cgit v1.2.3 From 0e7b766dc0aeedd47c8264242e06f3a470f5d589 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 17 Feb 2015 18:18:31 -0800 Subject: tools/thermal: tmon: tui: don't hard-code dialog window size assumptions We can use the ncurses API to get the number of rows. Signed-off-by: Brian Norris Acked-by: Jacob Pan Reviewed-by: Florian Fainelli Signed-off-by: Zhang Rui --- tools/thermal/tmon/tui.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/thermal/tmon/tui.c b/tools/thermal/tmon/tui.c index 43c5aecf71da..2779573a53cb 100644 --- a/tools/thermal/tmon/tui.c +++ b/tools/thermal/tmon/tui.c @@ -274,11 +274,14 @@ const char DIAG_TITLE[] = "[ TUNABLES ]"; void show_dialogue(void) { int j, x = 0, y = 0; + int rows, cols; WINDOW *w = dialogue_window; if (tui_disabled || !w) return; + getmaxyx(w, rows, cols); + werase(w); box(w, 0, 0); mvwprintw(w, 0, maxx/4, DIAG_TITLE); @@ -297,10 +300,8 @@ void show_dialogue(void) wattron(w, A_BOLD); mvwprintw(w, DIAG_DEV_ROWS+1, 1, "Enter Choice [A-Z]?"); wattroff(w, A_BOLD); - /* y size of dialogue win is nr cdev + 5, so print legend - * at the bottom line - */ - mvwprintw(w, ptdata.nr_cooling_dev+3, 1, + /* print legend at the bottom line */ + mvwprintw(w, rows - 2, 1, "Legend: A=Active, P=Passive, C=Critical"); wrefresh(dialogue_window); -- cgit v1.2.3 From 3bbcc529ee7f1d5807f3fe84cfdbdd1599530ad0 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 17 Feb 2015 18:18:32 -0800 Subject: tools/thermal: tmon: fixup tui windowing calculations The number of rows in the dialog vary according to the number of cooling devices. However, some of the windowing computations were assuming a fixed number of rows. This computation is OK when we have between 4 and 9 cooling devices (and they wrap to the next column), but with fewer devices, we end up printing off the end of the window. This unifies the row computation into a single function and uses that throughout the TUI code. This also accounts for increasing the number of rows when there are more than 9 total cooling devices. Signed-off-by: Brian Norris Acked-by: Jacob Pan Reviewed-by: Florian Fainelli Signed-off-by: Zhang Rui --- tools/thermal/tmon/tui.c | 21 ++++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/thermal/tmon/tui.c b/tools/thermal/tmon/tui.c index 2779573a53cb..36e1f86c8452 100644 --- a/tools/thermal/tmon/tui.c +++ b/tools/thermal/tmon/tui.c @@ -110,6 +110,18 @@ void write_status_bar(int x, char *line) wrefresh(status_bar_window); } +/* wrap at 5 */ +#define DIAG_DEV_ROWS 5 +/* + * list cooling devices + "set temp" entry; wraps after 5 rows, if they fit + */ +static int diag_dev_rows(void) +{ + int entries = ptdata.nr_cooling_dev + 1; + int rows = max(DIAG_DEV_ROWS, (entries + 1) / 2); + return min(rows, entries); +} + void setup_windows(void) { int y_begin = 1; @@ -134,7 +146,7 @@ void setup_windows(void) * dialogue window is a pop-up, when needed it lays on top of cdev win */ - dialogue_window = subwin(stdscr, ptdata.nr_cooling_dev+5, maxx-50, + dialogue_window = subwin(stdscr, diag_dev_rows() + 5, maxx-50, DIAG_Y, DIAG_X); thermal_data_window = subwin(stdscr, ptdata.nr_tz_sensor * @@ -270,7 +282,6 @@ void show_cooling_device(void) } const char DIAG_TITLE[] = "[ TUNABLES ]"; -#define DIAG_DEV_ROWS 5 void show_dialogue(void) { int j, x = 0, y = 0; @@ -287,7 +298,7 @@ void show_dialogue(void) mvwprintw(w, 0, maxx/4, DIAG_TITLE); /* list all the available tunables */ for (j = 0; j <= ptdata.nr_cooling_dev; j++) { - y = j % DIAG_DEV_ROWS; + y = j % diag_dev_rows(); if (y == 0 && j != 0) x += 20; if (j == ptdata.nr_cooling_dev) @@ -298,7 +309,7 @@ void show_dialogue(void) ptdata.cdi[j].type, ptdata.cdi[j].instance); } wattron(w, A_BOLD); - mvwprintw(w, DIAG_DEV_ROWS+1, 1, "Enter Choice [A-Z]?"); + mvwprintw(w, diag_dev_rows()+1, 1, "Enter Choice [A-Z]?"); wattroff(w, A_BOLD); /* print legend at the bottom line */ mvwprintw(w, rows - 2, 1, @@ -450,7 +461,7 @@ static void handle_input_choice(int ch) snprintf(buf, sizeof(buf), "New Value for %.10s-%2d: ", ptdata.cdi[cdev_id].type, ptdata.cdi[cdev_id].instance); - write_dialogue_win(buf, DIAG_DEV_ROWS+2, 2); + write_dialogue_win(buf, diag_dev_rows() + 2, 2); handle_input_val(cdev_id); } else { snprintf(buf, sizeof(buf), "Invalid selection %d", ch); -- cgit v1.2.3 From 3dc3712a823dcedf0c3218aeb2b1e271439cae1b Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 17 Feb 2015 18:18:33 -0800 Subject: tools/thermal: tmon: add .gitignore Signed-off-by: Brian Norris Acked-by: Jacob Pan Reviewed-by: Florian Fainelli Signed-off-by: Zhang Rui --- tools/thermal/tmon/.gitignore | 1 + 1 file changed, 1 insertion(+) create mode 100644 tools/thermal/tmon/.gitignore (limited to 'tools') diff --git a/tools/thermal/tmon/.gitignore b/tools/thermal/tmon/.gitignore new file mode 100644 index 000000000000..06e96be65276 --- /dev/null +++ b/tools/thermal/tmon/.gitignore @@ -0,0 +1 @@ +/tmon -- cgit v1.2.3 From 1b0eaa2cc2dc52dced546c1c8b0551cfc734d32d Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 17 Feb 2015 18:18:34 -0800 Subject: tools/thermal: tmon: support cross-compiling We might want to prepare CFLAGS outside of this Makefile, so don't overwrite its initial value. Then, support $(CROSS_COMPILE), so we can use a cross-compile toolchain. Signed-off-by: Brian Norris Acked-by: Jacob Pan Reviewed-by: Florian Fainelli Signed-off-by: Zhang Rui --- tools/thermal/tmon/Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/thermal/tmon/Makefile b/tools/thermal/tmon/Makefile index e775adcbd29f..13d1876c7889 100644 --- a/tools/thermal/tmon/Makefile +++ b/tools/thermal/tmon/Makefile @@ -2,8 +2,8 @@ VERSION = 1.0 BINDIR=usr/bin WARNFLAGS=-Wall -Wshadow -W -Wformat -Wimplicit-function-declaration -Wimplicit-int -CFLAGS= -O1 ${WARNFLAGS} -fstack-protector -CC=gcc +CFLAGS+= -O1 ${WARNFLAGS} -fstack-protector +CC=$(CROSS_COMPILE)gcc CFLAGS+=-D VERSION=\"$(VERSION)\" LDFLAGS+= -- cgit v1.2.3 From 96a0d99c72cc4eb4f1b2acb71580693b91b95b28 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 17 Feb 2015 18:18:35 -0800 Subject: tools/thermal: tmon: use pkg-config to determine library dependencies Some distros (e.g., Arch Linux) don't package the tinfo library separately from ncurses, so don't unconditionally include it. Instead, use pkg-config. The $(STATIC) ugliness is to handle the reported build case from commit 6b533269fb25 ("tools/thermal: tmon: fix compilation errors when building statically"), where a developer wants to be able to build with: make LDFLAGS=-static which requires an additional pkg-config flag. Finally, support a lowest common denominator fallback (-lpanel -lncurses) for build systems that don't have pkg-config entries for ncurses. Signed-off-by: Brian Norris Acked-by: Jacob Pan Reviewed-by: Florian Fainelli Signed-off-by: Zhang Rui --- tools/thermal/tmon/Makefile | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/thermal/tmon/Makefile b/tools/thermal/tmon/Makefile index 13d1876c7889..0788621c8d76 100644 --- a/tools/thermal/tmon/Makefile +++ b/tools/thermal/tmon/Makefile @@ -16,12 +16,21 @@ INSTALL_CONFIGFILE=install -m 644 -p CONFIG_FILE= CONFIG_PATH= +# Static builds might require -ltinfo, for instance +ifneq ($(findstring -static, $(LDFLAGS)),) +STATIC := --static +endif + +TMON_LIBS=-lm -lpthread +TMON_LIBS += $(shell pkg-config --libs $(STATIC) panelw ncursesw 2> /dev/null || \ + pkg-config --libs $(STATIC) panel ncurses 2> /dev/null || \ + echo -lpanel -lncurses) OBJS = tmon.o tui.o sysfs.o pid.o OBJS += tmon: $(OBJS) Makefile tmon.h - $(CC) ${CFLAGS} $(LDFLAGS) $(OBJS) -o $(TARGET) -lm -lpanel -lncursesw -ltinfo -lpthread + $(CC) $(CFLAGS) $(LDFLAGS) $(OBJS) -o $(TARGET) $(TMON_LIBS) valgrind: tmon sudo valgrind -v --track-origins=yes --tool=memcheck --leak-check=yes --show-reachable=yes --num-callers=20 --track-fds=yes ./$(TARGET) 1> /dev/null -- cgit v1.2.3 From 986ffe0384c38606b94947fad04e5deacb515408 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 17 Feb 2015 18:18:36 -0800 Subject: tools/thermal: tmon: silence 'set but not used' warnings MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit gcc complains about the 'cols' variable being unused. This is unavoidable, given the ncurses getmaxyx() macro-based API, which wants to assign to a variable directly, even when we're not going to use it. Warning: gcc -O1 -Wall -Wshadow -W -Wformat -Wimplicit-function-declaration -Wimplicit-int -fstack-protector -D VERSION=\"1.0\" -c -o tui.o tui.c tui.c: In function ‘show_dialogue’: tui.c:288:12: warning: variable ‘cols’ set but not used [-Wunused-but-set-variable] int rows, cols; ^ So, add a hack to get rid of that warning. Signed-off-by: Brian Norris Acked-by: Jacob Pan Reviewed-by: Florian Fainelli Signed-off-by: Zhang Rui --- tools/thermal/tmon/tui.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'tools') diff --git a/tools/thermal/tmon/tui.c b/tools/thermal/tmon/tui.c index 36e1f86c8452..b5d1c6b22dd3 100644 --- a/tools/thermal/tmon/tui.c +++ b/tools/thermal/tmon/tui.c @@ -293,6 +293,9 @@ void show_dialogue(void) getmaxyx(w, rows, cols); + /* Silence compiler 'unused' warnings */ + (void)cols; + werase(w); box(w, 0, 0); mvwprintw(w, 0, maxx/4, DIAG_TITLE); -- cgit v1.2.3