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| author | Namhyung Kim <namhyung@kernel.org> | 2014-12-22 05:44:11 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2014-12-23 16:05:59 +0100 |
| commit | b11bc8e28f4829f693ef6c0178fe1811386ac828 (patch) | |
| tree | 8c4d27f3e5974e5b767b18e77becbe8c9c48f0eb | |
| parent | perf report: Show progress bar for output resorting (diff) | |
| download | linux-b11bc8e28f4829f693ef6c0178fe1811386ac828.tar.xz linux-b11bc8e28f4829f693ef6c0178fe1811386ac828.zip | |
perf ui/tui: Print backtrace symbols when segfault occurs
The output will look like below. (I added an error into ui__init() for
the test).
$ perf report
perf: Segmentation fault
-------- backtrace --------
perf[0x503781]
/usr/lib/libc.so.6(+0x33b20)[0x7f1a14f04b20]
perf(ui__init+0xd5)[0x503645]
perf(setup_browser+0x97)[0x4ce4e7]
perf(cmd_report+0xcea)[0x4392ba]
perf[0x428493]
perf(main+0x60a)[0x427c0a]
/usr/lib/libc.so.6(__libc_start_main+0xf0)[0x7f1a14ef1040]
perf[0x427d29]
[0x0]
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1419223455-4362-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/ui/tui/setup.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/tools/perf/ui/tui/setup.c b/tools/perf/ui/tui/setup.c index 2f612562978c..3c38f25b1695 100644 --- a/tools/perf/ui/tui/setup.c +++ b/tools/perf/ui/tui/setup.c @@ -1,5 +1,8 @@ #include <signal.h> #include <stdbool.h> +#ifdef HAVE_BACKTRACE_SUPPORT +#include <execinfo.h> +#endif #include "../../util/cache.h" #include "../../util/debug.h" @@ -88,6 +91,25 @@ int ui__getch(int delay_secs) return SLkp_getkey(); } +#ifdef HAVE_BACKTRACE_SUPPORT +static void ui__signal_backtrace(int sig) +{ + void *stackdump[32]; + size_t size; + + ui__exit(false); + psignal(sig, "perf"); + + printf("-------- backtrace --------\n"); + size = backtrace(stackdump, ARRAY_SIZE(stackdump)); + backtrace_symbols_fd(stackdump, size, STDOUT_FILENO); + + exit(0); +} +#else +# define ui__signal_backtrace ui__signal +#endif + static void ui__signal(int sig) { ui__exit(false); @@ -122,8 +144,8 @@ int ui__init(void) ui_browser__init(); tui_progress__init(); - signal(SIGSEGV, ui__signal); - signal(SIGFPE, ui__signal); + signal(SIGSEGV, ui__signal_backtrace); + signal(SIGFPE, ui__signal_backtrace); signal(SIGINT, ui__signal); signal(SIGQUIT, ui__signal); signal(SIGTERM, ui__signal); |