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(parent: 33b2fb3) | patch
perf_counter: fix counter inheritance race
authorIngo Molnar <mingo@elte.hu>
Sun, 17 May 2009 09:24:08 +0000 (11:24 +0200)
committerIngo Molnar <mingo@elte.hu>
Tue, 19 May 2009 22:22:30 +0000 (00:22 +0200)
commitc44d70a340554a33071339064a303ac0f1a31623
treea620d5b82a07b2e2c8c7c57d2e81d5bfdcdd4c25tree | snapshot (tar.gz zip)
parent33b2fb303fe7f6b08bbb32f708e67b96eaa94a7acommit | 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>
include/linux/perf_counter.h diff | blob | blame | history
kernel/perf_counter.c diff | blob | blame | history
kernel source for telekom puls (alcatel/mediatek)