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* selftests/ftrace: Fix to test kprobe $comm arg only if availableMasami Hiramatsu2019-11-28
| | | | | | | | | | | | | [ Upstream commit 2452c96e617a0ff6fb2692e55217a3fa57a7322c ] Test $comm in kprobe-event argument syntax testcase only if it is supported on the kernel because $comm has been introduced 4.8 kernel. So on older stable kernel, it should be skipped. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
* selftests: ftrace: Add synthetic event syntax testcaseMasami Hiramatsu2018-11-21
| | | | | | | | | | | | | | | [ Upstream commit ba0e41ca81b935b958006c7120466e2217357827 ] Add a testcase to check the syntax and field types for synthetic_events interface. Link: http://lkml.kernel.org/r/153986838264.18251.16627517536956299922.stgit@devbox Acked-by: Shuah Khan <shuah@kernel.org> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* selftests/ftrace: Add snapshot and tracing_on test caseMasami Hiramatsu2018-09-05
| | | | | | | | | | | | | | | | | | | | [ Upstream commit 82f4f3e69c5c29bce940dd87a2c0f16c51d48d17 ] Add a testcase for checking snapshot and tracing_on relationship. This ensures that the snapshotting doesn't affect current tracing on/off settings. Link: http://lkml.kernel.org/r/153149932412.11274.15289227592627901488.stgit@devbox Cc: Tom Zanussi <tom.zanussi@linux.intel.com> Cc: Hiraku Toyooka <hiraku.toyooka@cybertrust.co.jp> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Shuah Khan <shuah@kernel.org> Cc: linux-kselftest@vger.kernel.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* selftests: ftrace: Add a testcase for probepointMasami Hiramatsu2018-05-30
| | | | | | | | | | | | | | | [ Upstream commit dfa453bc90eca0febff33c8d292a656e53702158 ] Add a testcase for probe point definition. This tests symbol, address and symbol+offset syntax. The offset must be positive and smaller than UINT_MAX. Link: http://lkml.kernel.org/r/152129043097.31874.14273580606301767394.stgit@devbox Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* selftests: ftrace: Add a testcase for string type with kprobe_eventMasami Hiramatsu2018-05-30
| | | | | | | | | | | | | | | [ Upstream commit 5fbdbed797b6d12d043a5121fdbc8d8b49d10e80 ] Add a testcase for string type with kprobe event. This tests good/bad syntax combinations and also the traced data is correct in several way. Link: http://lkml.kernel.org/r/152129038381.31874.9201387794548737554.stgit@devbox Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* selftests: ftrace: Add probe event argument syntax testcaseMasami Hiramatsu2018-05-30
| | | | | | | | | | | | | | | [ Upstream commit 871bef2000968c312a4000b2f56d370dcedbc93c ] Add a testcase for probe event argument syntax which ensures the kprobe_events interface correctly parses given event arguments. Link: http://lkml.kernel.org/r/152129033679.31874.12705519603869152799.stgit@devbox Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* selftests: kprobe: Choose an always-defined function to probeBen Hutchings2015-11-03
| | | | | | | | do_fork() is no longer defined on x86, so probe _do_fork() instead. Fixes: 3033f14ab78c ("clone: support passing tls argument via C ...") Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
* ftracetest: Do not use usleep directlyNamhyung Kim2015-04-03
| | | | | | | | | | | | | | | | | | | | | | | The usleep is only provided on distros from Redhat so running ftracetest on other distro resulted in failures due to the missing usleep. The reason of using [u]sleep in the test was to generate (scheduler) events. It can be done various ways like this: yield() { ping localhost -c 1 || sleep .001 || usleep 1 || sleep 1; } For more information to the history of this patch, please refer to: Link: http://lkml.kernel.org/r/1427329943-16896-1-git-send-email-namhyung@kernel.org Reported-by: Michael Ellerman <mpe@ellerman.id.au> Reported-by: Dave Jones <davej@codemonkey.org.uk> Reported-by: Luis Henriques <luis.henriques@canonical.com> Suggested-by: Pádraig Brady <P@draigBrady.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
* ftracetest: Convert exit -1 to exit $FAILMichael Ellerman2015-03-31
| | | | | | | | | | | POSIX says that exit takes an unsigned integer between 0 and 255, so using -1 doesn't work on POSIX shells. There is already a well-defined failure code, $FAIL (1), so use that. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
* ftracetest: Cope properly with stack tracer not being enabledMichael Ellerman2015-03-31
| | | | | | | | | | | | | | | | | | | | If the stack tracer (CONFIG_STACK_TRACER) is disabled, the fgraph-filter-stack test blows chunks: [8] ftrace - function graph filters with stack tracer [FAIL] + reset_tracer + echo nop ./ftracetest: 19: /home/michael/selftests/ftrace/test.d/ftrace/fgraph-filter-stack.tc: cannot create /proc/sys/kernel/stack_tracer_enabled: Directory nonexistent Fix it by checking if the proc file exists before echoing to it. With the patch applied it fails correctly with: [8] ftrace - function graph filters with stack tracer [UNSUPPORTED] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
* ftracetest: Add basic event tracing test casesNamhyung Kim2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds basic event tracing tests like enable/disable with top-level, subsystem-level and individual event files. # ./ftracetest === Ftrace unit tests === [1] Basic trace file check [PASS] [2] Basic trace clock test [PASS] [3] Basic event tracing check [PASS] [4] Basic test for tracers [PASS] [5] event tracing - enable/disable with top level files [PASS] [6] event tracing - enable/disable with subsystem level files [PASS] [7] event tracing - enable/disable with event level files [PASS] [8] ftrace - function graph filters [PASS] [9] ftrace - function profiler with function tracing [PASS] [10] ftrace - function graph filters with stack tracer [PASS] [11] Kretprobe dynamic event with arguments [PASS] [12] Kprobe dynamic event - busy event check [PASS] [13] Kprobe dynamic event with arguments [PASS] [14] Kprobe dynamic event - adding and removing [PASS] # of passed: 14 # of failed: 0 # of unresolved: 0 # of untested: 0 # of unsupported: 0 # of xfailed: 0 # of undefined(test bug): 0 Link: http://lkml.kernel.org/r/1415239470-28705-3-git-send-email-namhyung@kernel.org Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* ftracetest: Clear trace buffer after running kprobe testcasesNamhyung Kim2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The kprobe testcases create, use and delete dynamic events during the test but didn't clear the trace buffer so it'll leave the result after it finishes. # ./ftracetest ... # cat trace # tracer: nop # # entries-in-buffer/entries-written: 2/2 #P:12 # # _-----=> irqs-off # / _----=> need-resched # | / _---=> hardirq/softirq # || / _--=> preempt-depth # ||| / delay # TASK-PID CPU# |||| TIMESTAMP FUNCTION # | | | |||| | | ftracetest-26474 [009] d..1 79417.143782: Unknown type 1099 ftracetest-26498 [009] d..1 79417.208034: Unknown type 1101 Link: http://lkml.kernel.org/r/1415239470-28705-2-git-send-email-namhyung@kernel.org Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* ftracetest: Add a couple of ftrace test casesSteven Rostedt (Red Hat)2014-11-06
| | | | | | | | | | | | | | | | | | | | | Added three test cases to get the feel of adding tests to ftracetest. The three cases are: function profiling test, to make sure function profiling still works with function tracing (was a regression) function graph filter test to make sure that function graph filtering works. function graph filter with stack tracing test to make sure that the function graph filter does filter and also continues to filter when another function tracer is running (like the stack tracer) Link: http://lkml.kernel.org/r/20141103212737.696365174@goodmis.org Link: http://lkml.kernel.org/r/20141104153028.602754370@goodmis.org Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* ftracetest: Add functions file that holds helper functionsSteven Rostedt (Red Hat)2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Created the file tools/testing/ftrace/test.d/functions that will hold helper functions. Current helper functions include: Add clear_trace() helper to reset the trace file Used as a descriptive name to show that "echo > trace" is clearing the trace file. Add disable/enable_tracing() helper calls Add calls that disable and enable tracing respectively by echoing 0 or 1 into tracing_on. Add helper reset_tracer() function Add a helper function reset_tracer() that will clear the current_tracer (echo nop > current_tracer). Link: http://lkml.kernel.org/r/20141103212737.696365174@goodmis.org Link: http://lkml.kernel.org/r/20141104153028.465517119@goodmis.org Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* ftracetest: Add kprobes on ftrace testcaseHeiko Carstens2014-11-03
| | | | | | | | | | | | | | Add a kprobes on ftrace testcase. The testcase verifies that - enabling and disabling function tracing works on a function which already contains a dynamic kprobe - adding and removing a dynamic kprobe works on a function which is already enabled for function tracing Link: http://lkml.kernel.org/p/1413802323-5297-2-git-send-email-heiko.carstens@de.ibm.com Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* tracing/kprobes: Add selftest scripts testing kprobe-tracer as startup testMasami Hiramatsu2014-10-08
| | | | | | | | | | | | | Add two selftest scripts which tests kprobe-tracer as the startup selftest does. These test cases are testing that the kprobe_event can accept a kprobe event with $stack related arguments and a kretprobe event with $retval argument. Link: http://lkml.kernel.org/p/20141008040307.13415.45145.stgit@kbuild-f20.novalocal Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* ftracetest: Add POSIX.3 standard and XFAIL result codesMasami Hiramatsu2014-10-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add XFAIL and POSIX 1003.3 standard codes (UNRESOLVED/ UNTESTED/UNSUPPORTED) as result codes. These are used for the results that test case is expected to fail or unsupported feature (by config). To return these result code, this introduces exit_unresolved, exit_untested, exit_unsupported and exit_xfail functions, which use real-time signals to notify the result code to ftracetest. This also set "errexit" option for the testcases, so that the tests don't need to exit explicitly. Note that if the test returns UNRESOLVED/UNSUPPORTED/FAIL, its test log including executed commands is shown on console and main logfile as below. ------ # ./ftracetest samples/ === Ftrace unit tests === [1] failure-case example [FAIL] execute: /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/fail.tc + . /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/fail.tc ++ cat non-exist-file cat: non-exist-file: No such file or directory [2] pass-case example [PASS] [3] unresolved-case example [UNRESOLVED] execute: /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/unresolved.tc + . /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/unresolved.tc ++ trap exit_unresolved INT ++ kill -INT 29324 +++ exit_unresolved +++ kill -s 38 29265 +++ exit 0 [4] unsupported-case example [UNSUPPORTED] execute: /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/unsupported.tc + . /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/unsupported.tc ++ exit_unsupported ++ kill -s 40 29265 ++ exit 0 [5] untested-case example [UNTESTED] [6] xfail-case example [XFAIL] # of passed: 1 # of failed: 1 # of unresolved: 1 # of untested: 1 # of unsupported: 1 # of xfailed: 1 # of undefined(test bug): 0 ------ Link: http://lkml.kernel.org/p/20140929120211.30203.99510.stgit@kbuild-f20.novalocal Acked-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* ftracetest: Add kprobe basic testcasesMasami Hiramatsu2014-09-23
| | | | | | | | | | | | Add basic testcases for kprobe dynamic events. This also shows that the ftracetest accepts sub-directory for new testcases. Link: http://lkml.kernel.org/p/20140922234254.23415.46964.stgit@kbuild-f20.novalocal Acked-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* ftracetest: Add ftrace basic testcasesMasami Hiramatsu2014-09-23
| | | | | | | | | | | Add ftrace basic testcases. This just checks ftrace debugfs interface works as it is designed. Link: http://lkml.kernel.org/p/20140922234252.23415.62897.stgit@kbuild-f20.novalocal Acked-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* ftracetest: Initial commit for ftracetestMasami Hiramatsu2014-09-23
ftracetest is a collection of testcase shell-scripts for ftrace. To avoid regressions of ftrace, these testcases check correct ftrace behaviors. If someone would like to add any features on ftrace, the patch series should have at least one testcase for checking the new behavior. Link: http://lkml.kernel.org/p/20140922234250.23415.68758.stgit@kbuild-f20.novalocal Acked-by: Shuah Khan <shuahkh@osg.samsung.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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