diff options
| author | Will Deacon <will.deacon@arm.com> | 2010-04-30 11:34:26 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-05-17 11:53:58 +0100 |
| commit | 929f5199448a67d41bb249d58815ef77bcd53622 (patch) | |
| tree | edb796c49205561ef98abb73f340e900225146dc /arch/arm/include | |
| parent | 49e6a32f2f0876b6267584d9c7e0e213bca6e2b8 (diff) | |
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')
| -rw-r--r-- | arch/arm/include/asm/perf_event.h | 3 |
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 fa4b32625d3..48837e6d888 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__ */ |