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(parent: c33a0bc) | patch
perf_counter: fix nmi-watchdog interaction
authorPeter Zijlstra <a.p.zijlstra@chello.nl>
Fri, 1 May 2009 10:23:17 +0000 (12:23 +0200)
committerIngo Molnar <mingo@elte.hu>
Fri, 1 May 2009 11:23:44 +0000 (13:23 +0200)
commit63a809a2dc53b91268dd915bbcbd425063893676
tree5eafd0e921a7178f9e25695133863dde66f25de3tree | snapshot (tar.gz zip)
parentc33a0bc4e41ef169d6e807d8abb9502544b518e5commit | diff
perf_counter: fix nmi-watchdog interaction

When we don't have any perf-counters active, don't act like we know
what the NMI is for.

[ Impact: fix hard hang with nmi_watchdog=2 ]

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
LKML-Reference: <20090501102533.109867793@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/kernel/cpu/perf_counter.c diff | blob | blame | history