From: Namhyung Kim <[email protected]> It's for debugging purpose.
Cc: Steven Rostedt <[email protected]> Cc: Frederic Weisbecker <[email protected]> Signed-off-by: Namhyung Kim <[email protected]> --- tools/perf/builtin-ftrace.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index 698dd0b5cecf..3b6bcc29715b 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -41,6 +41,13 @@ struct perf_ftrace { static bool done; +static void sig_exit(int sig) +{ + psignal(sig, "perf"); + signal(sig, SIG_DFL); + raise(sig); +} + static void sig_handler(int sig __maybe_unused) { done = true; @@ -228,6 +235,7 @@ static int do_ftrace_live(struct perf_ftrace *ftrace) signal(SIGUSR1, sig_handler); signal(SIGCHLD, sig_handler); signal(SIGPIPE, sig_handler); + signal(SIGSEGV, sig_exit); if (setup_tracing_files(ftrace) < 0) goto out_reset; @@ -599,6 +607,7 @@ static int do_ftrace_record(struct perf_ftrace *ftrace) signal(SIGINT, sig_handler); signal(SIGUSR1, sig_handler); signal(SIGCHLD, sig_handler); + signal(SIGSEGV, sig_exit); if (setup_tracing_files(ftrace) < 0) goto out_reset; @@ -1100,6 +1109,8 @@ static int do_ftrace_show(struct perf_ftrace *ftrace) }, }; + signal(SIGSEGV, sig_exit); + scnprintf(buf, sizeof(buf), "%s.dir/perf.header", ftrace->dirname); session = perf_session__new(buf, O_RDONLY, false, false, &show.tool); @@ -1189,6 +1200,8 @@ static int do_ftrace_report(struct perf_ftrace *ftrace) struct machine *machine; struct dso *dso; + signal(SIGSEGV, sig_exit); + scnprintf(buf, sizeof(buf), "%s.dir/perf.header", ftrace->dirname); session = perf_session__new(buf, O_RDONLY, false, false, &report.tool); -- 1.7.11.7 -- 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/
