diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-05-17 11:24:08 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-05-20 00:22:30 +0200 |
| commit | c44d70a340554a33071339064a303ac0f1a31623 (patch) | |
| tree | a620d5b82a07b2e2c8c7c57d2e81d5bfdcdd4c25 /include/linux/perf_counter.h | |
| parent | 33b2fb303fe7f6b08bbb32f708e67b96eaa94a7a (diff) | |
perf_counter: fix counter inheritance race
Context rotation should not occur when we are in the middle of
walking the counter list when inheriting counters ...
[ Impact: fix occasionally incorrect perf stat results ]
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/perf_counter.h')
| -rw-r--r-- | include/linux/perf_counter.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h index c8c1dfc22c9..13cb2fbbf33 100644 --- a/include/linux/perf_counter.h +++ b/include/linux/perf_counter.h @@ -508,6 +508,7 @@ struct perf_counter_context { int nr_counters; int nr_active; int is_active; + int rr_allowed; struct task_struct *task; /* |