From: Arnaldo Carvalho de Melo <a...@redhat.com> To help in debugging the tools, provides functionality roughly similar to the function with the same name in the kernel.
Copied from glibc backtrace function man page. Cc: David Ahern <dsah...@gmail.com> Cc: Frederic Weisbecker <fweis...@gmail.com> Cc: Jiri Olsa <jo...@redhat.com> Cc: Mike Galbraith <efa...@gmx.de> Cc: Namhyung Kim <namhy...@gmail.com> Cc: Paul Mackerras <pau...@samba.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Stephane Eranian <eran...@google.com> Link: http://lkml.kernel.org/n/tip-6nw2sak21bqy8h1m2syyo...@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/util/util.c | 19 +++++++++++++++++++ tools/perf/util/util.h | 2 ++ 2 files changed, 21 insertions(+) diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c index d03599f..1b8775c 100644 --- a/tools/perf/util/util.c +++ b/tools/perf/util/util.c @@ -1,6 +1,9 @@ #include "../perf.h" #include "util.h" #include <sys/mman.h> +#include <execinfo.h> +#include <stdio.h> +#include <stdlib.h> /* * XXX We need to find a better place for these things... @@ -158,3 +161,19 @@ size_t hex_width(u64 v) return n; } + +/* Obtain a backtrace and print it to stdout. */ +void dump_stack(void) +{ + void *array[16]; + size_t size = backtrace(array, ARRAY_SIZE(array)); + char **strings = backtrace_symbols(array, size); + size_t i; + + printf("Obtained %zd stack frames.\n", size); + + for (i = 0; i < size; i++) + printf("%s\n", strings[i]); + + free(strings); +} diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index b13c733..00a93a9 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -266,4 +266,6 @@ size_t hex_width(u64 v); char *rtrim(char *s); +void dump_stack(void); + #endif -- 1.7.9.2.358.g22243 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
