perf: Fix EXIT event notification
authorJiri Olsa <jolsa@redhat.com>
Mon, 6 May 2013 16:27:17 +0000 (18:27 +0200)
committerIngo Molnar <mingo@kernel.org>
Tue, 7 May 2013 11:17:28 +0000 (13:17 +0200)
commit524eff183f51d080a83b348d0ea97c08b3607b9a
treef82d50daa9e5cc77152f78c08d25ba92cc7b32de
parent534c97b0950b1967bca1c753aeaed32f5db40264
perf: Fix EXIT event notification

The perf_event_task_ctx() function needs to be called with
preemption disabled, since it's checking for currently
scheduled cpu against event cpu.

We disable preemption for task related perf event context
if there's one defined, leaving up to the chance which cpu
it gets scheduled in.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Borislav Petkov <bp@alien8.de>
Link: http://lkml.kernel.org/r/1367857638-27631-2-git-send-email-jolsa@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
kernel/events/core.c