[tip:perf/core] perf evlist: Reset SIGTERM handler in workload child process
From: tip-bot for David Ahern
Date: Fri May 31 2013 - 08:28:28 EST
Commit-ID: 0817df08d31cd961be225e601d8ec92acac62027
Gitweb: http://git.kernel.org/tip/0817df08d31cd961be225e601d8ec92acac62027
Author: David Ahern <dsahern@xxxxxxxxx>
AuthorDate: Sat, 25 May 2013 17:50:39 -0600
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Thu, 30 May 2013 14:34:56 +0300
perf evlist: Reset SIGTERM handler in workload child process
Jiri reported hanging perf tests on latest acme's perf/core and bisected
it to 87f303a9f:
[jolsa@krava2 perf]$ cat /proc/sys/kernel/perf_event_paranoid
1
[jolsa@krava2 perf]$ ./perf record -C 0 kill
Error:
You may not have permission to collect %sstats.
Consider tweaking /proc/sys/kernel/perf_event_paranoid:
-1 - Not paranoid at all
0 - Disallow raw tracepoint access for unpriv
1 - Disallow cpu events for unpriv
2 - Disallow kernel profiling for unpriv
Need to let default handling kickin for workload process.
Reported-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Signed-off-by: David Ahern <dsahern@xxxxxxxxx>
Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Tested-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1369525839-1261-1-git-send-email-dsahern@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/util/evlist.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index f7c7278..99b43dd 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -776,6 +776,8 @@ int perf_evlist__prepare_workload(struct perf_evlist *evlist,
if (pipe_output)
dup2(2, 1);
+ signal(SIGTERM, SIG_DFL);
+
close(child_ready_pipe[0]);
close(go_pipe[1]);
fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC);
--
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