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(parent: cee010e) | patch
perf: Fix perf_init_event()
authorPeter Zijlstra <a.p.zijlstra@chello.nl>
Fri, 10 Sep 2010 15:38:06 +0000 (17:38 +0200)
committerIngo Molnar <mingo@elte.hu>
Fri, 10 Sep 2010 15:41:55 +0000 (17:41 +0200)
commite5f4d3394a52ac351f1a479fe136d92fa5228eff
tree57adeb66c5e98bf86613c15295e07cbb07952be3tree | snapshot (tar.gz zip)
parentcee010ec5211b96f33c5c2208f5c14ebb04b634acommit | diff
perf: Fix perf_init_event()

We ought to return -ENOENT when non of the registered PMUs
recognise the requested event.

This fixes a boot crash that occurs if no PMU is available
but the NMI watchdog tries to register an event.

Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
kernel/perf_event.c diff | blob | blame | history