[PATCH] perf record: handle death by SIGTERM

[David Ahern <dsahern@gmail.com>]

perf data files cannot be processed until the header file is update
which is done via an on_exit handler. If perf is killed due to a SIGTERM
it does not run the on_exit hooks leaving the perf.data file in a
random state which perf-report will happily spin on trying to read. As
noted by Mike an easy reproducer is:
  perf record -a -g & sleep 1; killall perf

Fix by catching SIGTERM like it does SIGINT.  Also need to remove the
kill which was added via commit f7b7c26e.

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
---
 tools/perf/builtin-record.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index cdf58ec..fff985c 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -198,7 +198,6 @@ static void perf_record__sig_exit(int exit_status __maybe_unused, void *arg)
 		return;
 
 	signal(signr, SIG_DFL);
-	kill(getpid(), signr);
 }
 
 static bool perf_evlist__equal(struct perf_evlist *evlist,
@@ -404,6 +403,7 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
 	signal(SIGCHLD, sig_handler);
 	signal(SIGINT, sig_handler);
 	signal(SIGUSR1, sig_handler);
+	signal(SIGTERM, sig_handler);
 
 	if (!output_name) {
 		if (!fstat(STDOUT_FILENO, &st) && S_ISFIFO(st.st_mode))
-- 
1.7.10.1