Commit-ID: dc4552bf7176573ccf79af04ab8648b015738f4a Gitweb: http://git.kernel.org/tip/dc4552bf7176573ccf79af04ab8648b015738f4a Author: Arnaldo Carvalho de Melo <[email protected]> AuthorDate: Tue, 7 Aug 2012 23:32:05 -0300 Committer: Arnaldo Carvalho de Melo <[email protected]> CommitDate: Tue, 7 Aug 2012 23:32:05 -0300
perf tools: Add dump_stack function 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 <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Mike Galbraith <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephane Eranian <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- tools/perf/util/util.c | 19 +++++++++++++++++++ tools/perf/util/util.h | 2 ++ 2 files changed, 21 insertions(+), 0 deletions(-) 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
