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| author | Stephane Eranian <eranian@google.com> | 2013-06-04 17:44:26 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-07-08 17:36:33 -0300 |
| commit | d07f0b120642f442d81a61f68a9325fb7717004f (patch) | |
| tree | 0a0c3e465c98439a4ab98bbdb21892422b994ca1 /tools/perf/builtin-record.c | |
| parent | 079787f209416416383c74ea5d5044be2d586f5e (diff) | |
| download | linux-d07f0b120642f442d81a61f68a9325fb7717004f.tar.gz linux-d07f0b120642f442d81a61f68a9325fb7717004f.tar.bz2 linux-d07f0b120642f442d81a61f68a9325fb7717004f.zip | |
perf stat: Avoid sending SIGTERM to random processes
This patch fixes a problem with perf stat whereby on termination it may
send a SIGTERM signal to random processes on systems with high PID
recycling. I got some actual bug reports on this.
There is race between the SIGCHLD and sig_atexit() handlers. This patch
addresses this problem by clearing child_pid in the SIGCHLD handler.
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20130604154426.GA2928@quad
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-record.c')
0 files changed, 0 insertions, 0 deletions