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authorWill Deacon <will.deacon@arm.com>2010-04-30 11:34:26 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-05-17 11:53:58 +0100
commit929f5199448a67d41bb249d58815ef77bcd53622 (patch)
treeedb796c49205561ef98abb73f340e900225146dc /arch/arm/include/asm/perf_event.h
parent49e6a32f2f0876b6267584d9c7e0e213bca6e2b8 (diff)
downloadlinux-linaro-stable-929f5199448a67d41bb249d58815ef77bcd53622.tar.gz
ARM: 6071/1: perf-events: allow modules to query the number of hardware counters
For OProfile to initialise oprofilefs correctly, it needs to know the number of counters it can represent. This patch adds a function to the ARM perf-events backend to return the number of hardware counters available for the current PMU. Cc: Jamie Iles <jamie.iles@picochip.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm/perf_event.h')
-rw-r--r--arch/arm/include/asm/perf_event.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/include/asm/perf_event.h b/arch/arm/include/asm/perf_event.h
index fa4b32625d37..48837e6d8887 100644
--- a/arch/arm/include/asm/perf_event.h
+++ b/arch/arm/include/asm/perf_event.h
@@ -42,4 +42,7 @@ enum arm_perf_pmu_ids {
extern enum arm_perf_pmu_ids
armpmu_get_pmu_id(void);
+extern int
+armpmu_get_max_events(void);
+
#endif /* __ARM_PERF_EVENT_H__ */