From: David Ahern Date: Sat, 25 May 2013 23:50:39 +0000 (-0600) Subject: perf evlist: Reset SIGTERM handler in workload child process X-Git-Tag: firefly_0821_release~176^2~5831^2~26^2~8 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=0817df08d31cd961be225e601d8ec92acac62027;p=firefly-linux-kernel-4.4.55.git 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 Signed-off-by: David Ahern Acked-by: Jiri Olsa Tested-by: Jiri Olsa Link: http://lkml.kernel.org/r/1369525839-1261-1-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index f7c727801aab..99b43dd18c57 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);