perf tools: Use same signal handling strategy as 'record'

I.e. don't exit with the signal number, instead set the signal handler
to the default one and then raise it again.

Noticed while trying to dump the stack at segfaults in the 'perf test'
forked process used to run each test, that inspects signal info at
each test.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-5x5r176wnoqxi5p6id05wv9w@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 0d76ded5
...@@ -352,7 +352,8 @@ void sighandler_dump_stack(int sig) ...@@ -352,7 +352,8 @@ void sighandler_dump_stack(int sig)
{ {
psignal(sig, "perf"); psignal(sig, "perf");
dump_stack(); dump_stack();
exit(sig); signal(sig, SIG_DFL);
raise(sig);
} }
int parse_nsec_time(const char *str, u64 *ptime) int parse_nsec_time(const char *str, u64 *ptime)
......
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