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authorVince Weaver <vincent.weaver@maine.edu>2014-05-16 17:15:49 -0400
committerIngo Molnar <mingo@kernel.org>2014-06-05 12:30:00 +0200
commitedcb4d3c36a6429caa03ddfeab4cbb153c7002b2 (patch)
tree682b321f8473dfd53cb55382c20955a01e104c31 /arch/arm/kernel/perf_event.c
parent53b25335dd60981ad608da7890420898a34469a6 (diff)
downloadlinux-edcb4d3c36a6429caa03ddfeab4cbb153c7002b2.tar.gz
perf/ARM: Use common PMU interrupt disabled code
Make the ARM perf code use the new common PMU interrupt disabled code. This allows perf to work on ARM machines without a working PMU interrupt (for example, raspberry pi). Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Vince Weaver <vincent.weaver@maine.edu> [peterz: applied changes suggested by Will] Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Cc: devicetree@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1405161712190.11099@vincent-weaver-1.umelst.maine.edu [ Small readability tweaks to the code. ] Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arm/kernel/perf_event.c')
-rw-r--r--arch/arm/kernel/perf_event.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index a6bc431cde7..4238bcba9d6 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -410,7 +410,7 @@ __hw_perf_event_init(struct perf_event *event)
*/
hwc->config_base |= (unsigned long)mapping;
- if (!hwc->sample_period) {
+ if (!is_sampling_event(event)) {
/*
* For non-sampling runs, limit the sample_period to half
* of the counter width. That way, the new counter value