From 1caf6aaaa47471831d77c75f094d4e00ad1ec808 Mon Sep 17 00:00:00 2001 From: Michael Karcher Date: Sun, 18 Jan 2015 00:36:15 +0100 Subject: scripts/recordmcount.pl: There is no -m32 gcc option on Super-H anymore Compiling SH with gcc-4.8 fails due to the -m32 option not being supported. From http://buildd.debian-ports.org/status/fetch.php?pkg=linux&arch=sh4&ver=3.16.7-ckt4-1&stamp=1421425783 CC init/main.o gcc-4.8: error: unrecognized command line option '-m32' ld: cannot find init/.tmp_mc_main.o: No such file or directory objcopy: 'init/.tmp_mx_main.o': No such file rm: cannot remove 'init/.tmp_mx_main.o': No such file or directory rm: cannot remove 'init/.tmp_mc_main.o': No such file or directory Link: http://lkml.kernel.org/r/1421537778-29001-1-git-send-email-kernel@mkarcher.dialup.fu-berlin.de Link: http://lkml.kernel.org/r/54BCBDD4.10102@physik.fu-berlin.de Cc: stable@vger.kernel.org Cc: Matt Fleming Reported-by: John Paul Adrian Glaubitz Signed-off-by: Michael Karcher Signed-off-by: Steven Rostedt --- scripts/recordmcount.pl | 1 - 1 file changed, 1 deletion(-) (limited to 'scripts') diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl index 56ea99a12ab7..537c38ca2e1c 100755 --- a/scripts/recordmcount.pl +++ b/scripts/recordmcount.pl @@ -255,7 +255,6 @@ if ($arch eq "x86_64") { # force flags for this arch $ld .= " -m shlelf_linux"; $objcopy .= " -O elf32-sh-linux"; - $cc .= " -m32"; } elsif ($arch eq "powerpc") { $local_regex = "^[0-9a-fA-F]+\\s+t\\s+(\\.?\\S+)"; -- cgit v1.2.3 From e994393acd65e729a574aaca466eab22b5b39cc6 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 13 Jan 2015 22:24:31 +0100 Subject: X.509: silence asn1 compiler debug output The asn1_compiler process is particularly chatty and produces about the only stdout output for an allmodconfig kernel. In order to follow the general concept of 'no news is good news' for building kernels, this hides all the existing output unless the KBUILD_VERBOSE environment variable is set. Signed-off-by: Arnd Bergmann Signed-off-by: David Howells --- scripts/asn1_compiler.c | 30 +++++++++++++++++++----------- 1 file changed, 19 insertions(+), 11 deletions(-) (limited to 'scripts') diff --git a/scripts/asn1_compiler.c b/scripts/asn1_compiler.c index 91c4117637ae..7750e9c31483 100644 --- a/scripts/asn1_compiler.c +++ b/scripts/asn1_compiler.c @@ -311,6 +311,9 @@ struct token { static struct token *token_list; static unsigned nr_tokens; +static _Bool verbose; + +#define debug(fmt, ...) do { if (verbose) printf(fmt, ## __VA_ARGS__); } while (0) static int directive_compare(const void *_key, const void *_pdir) { @@ -322,21 +325,21 @@ static int directive_compare(const void *_key, const void *_pdir) dlen = strlen(dir); clen = (dlen < token->size) ? dlen : token->size; - //printf("cmp(%*.*s,%s) = ", + //debug("cmp(%*.*s,%s) = ", // (int)token->size, (int)token->size, token->value, // dir); val = memcmp(token->value, dir, clen); if (val != 0) { - //printf("%d [cmp]\n", val); + //debug("%d [cmp]\n", val); return val; } if (dlen == token->size) { - //printf("0\n"); + //debug("0\n"); return 0; } - //printf("%d\n", (int)dlen - (int)token->size); + //debug("%d\n", (int)dlen - (int)token->size); return dlen - token->size; /* shorter -> negative */ } @@ -515,13 +518,13 @@ static void tokenise(char *buffer, char *end) } nr_tokens = tix; - printf("Extracted %u tokens\n", nr_tokens); + debug("Extracted %u tokens\n", nr_tokens); #if 0 { int n; for (n = 0; n < nr_tokens; n++) - printf("Token %3u: '%*.*s'\n", + debug("Token %3u: '%*.*s'\n", n, (int)token_list[n].size, (int)token_list[n].size, token_list[n].value); @@ -542,6 +545,7 @@ int main(int argc, char **argv) ssize_t readlen; FILE *out, *hdr; char *buffer, *p; + char *kbuild_verbose; int fd; if (argc != 4) { @@ -550,6 +554,10 @@ int main(int argc, char **argv) exit(2); } + kbuild_verbose = getenv("KBUILD_VERBOSE"); + if (kbuild_verbose) + verbose = atoi(kbuild_verbose); + filename = argv[1]; outputname = argv[2]; headername = argv[3]; @@ -748,11 +756,11 @@ static void build_type_list(void) qsort(type_index, nr, sizeof(type_index[0]), type_index_compare); - printf("Extracted %u types\n", nr_types); + debug("Extracted %u types\n", nr_types); #if 0 for (n = 0; n < nr_types; n++) { struct type *type = type_index[n]; - printf("- %*.*s\n", + debug("- %*.*s\n", (int)type->name->size, (int)type->name->size, type->name->value); @@ -793,7 +801,7 @@ static void parse(void) } while (type++, !(type->flags & TYPE_STOP_MARKER)); - printf("Extracted %u actions\n", nr_actions); + debug("Extracted %u actions\n", nr_actions); } static struct element *element_list; @@ -1284,7 +1292,7 @@ static void render(FILE *out, FILE *hdr) } /* We do two passes - the first one calculates all the offsets */ - printf("Pass 1\n"); + debug("Pass 1\n"); nr_entries = 0; root = &type_list[0]; render_element(NULL, root->element, NULL); @@ -1295,7 +1303,7 @@ static void render(FILE *out, FILE *hdr) e->flags &= ~ELEMENT_RENDERED; /* And then we actually render */ - printf("Pass 2\n"); + debug("Pass 2\n"); fprintf(out, "\n"); fprintf(out, "static const unsigned char %s_machine[] = {\n", grammar_name); -- cgit v1.2.3 From c0a80c0c27e5e65b180a25e6c4c2f7ef9e386cd3 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Fri, 9 Jan 2015 13:06:33 +0100 Subject: ftrace: allow architectures to specify ftrace compile options If the kernel is compiled with function tracer support the -pg compile option is passed to gcc to generate extra code into the prologue of each function. This patch replaces the "open-coded" -pg compile flag with a CC_FLAGS_FTRACE makefile variable which architectures can override if a different option should be used for code generation. Acked-by: Steven Rostedt Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- scripts/Makefile.build | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'scripts') diff --git a/scripts/Makefile.build b/scripts/Makefile.build index 649ce6844033..01df30af4d4a 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -234,8 +234,9 @@ sub_cmd_record_mcount = set -e ; perl $(srctree)/scripts/recordmcount.pl "$(ARCH "$(if $(part-of-module),1,0)" "$(@)"; recordmcount_source := $(srctree)/scripts/recordmcount.pl endif -cmd_record_mcount = \ - if [ "$(findstring -pg,$(_c_flags))" = "-pg" ]; then \ +cmd_record_mcount = \ + if [ "$(findstring $(CC_FLAGS_FTRACE),$(_c_flags))" = \ + "$(CC_FLAGS_FTRACE)" ]; then \ $(sub_cmd_record_mcount) \ fi; endif -- cgit v1.2.3 From e6d60b368b45b9be3aa068f8e5fa98c3487c9d4e Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Fri, 9 Jan 2015 13:08:28 +0100 Subject: s390/ftrace: hotpatch support for function tracing Make use of gcc's hotpatch support to generate better code for ftrace function tracing. The generated code now contains only a six byte nop in each function prologue instead of a 24 byte code block which will be runtime patched to support function tracing. With the new code generation the runtime overhead for supporting function tracing is close to zero, while the original code did show a significant performance impact. Acked-by: Steven Rostedt Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- scripts/recordmcount.pl | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'scripts') diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl index 56ea99a12ab7..be39be0abefc 100755 --- a/scripts/recordmcount.pl +++ b/scripts/recordmcount.pl @@ -242,8 +242,13 @@ if ($arch eq "x86_64") { $cc .= " -m32"; } elsif ($arch eq "s390" && $bits == 64) { - $mcount_regex = "^\\s*([0-9a-fA-F]+):\\s*R_390_(PC|PLT)32DBL\\s+_mcount\\+0x2\$"; - $mcount_adjust = -14; + if ($cc =~ /-DCC_USING_HOTPATCH/) { + $mcount_regex = "^\\s*([0-9a-fA-F]+):\\s*c0 04 00 00 00 00\\s*brcl\\s*0,[0-9a-f]+ <([^\+]*)>\$"; + $mcount_adjust = 0; + } else { + $mcount_regex = "^\\s*([0-9a-fA-F]+):\\s*R_390_(PC|PLT)32DBL\\s+_mcount\\+0x2\$"; + $mcount_adjust = -14; + } $alignment = 8; $type = ".quad"; $ld .= " -m elf64_s390"; -- cgit v1.2.3