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| author | Matt Fleming <matt@console-pimps.org> | 2010-09-27 20:22:24 +0100 |
|---|---|---|
| committer | Robert Richter <robert.richter@amd.com> | 2010-10-11 10:38:13 +0200 |
| commit | 3bf101ba42a1c89b5afbc7492e7647dae5e18735 (patch) | |
| tree | 2501d57e827b283da1a0240630fe5988d155f07b /arch/arm/kernel | |
| parent | 4cbe75be5c6ae86bdc7daec864eeb2dfd66f48bb (diff) | |
| download | linux-3bf101ba42a1c89b5afbc7492e7647dae5e18735.tar.bz2 | |
perf: Add helper function to return number of counters
The number of counters for the registered pmu is needed in a few places
so provide a helper function that returns this number.
Signed-off-by: Matt Fleming <matt@console-pimps.org>
Tested-by: Will Deacon <will.deacon@arm.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Robert Richter <robert.richter@amd.com>
Diffstat (limited to 'arch/arm/kernel')
| -rw-r--r-- | arch/arm/kernel/perf_event.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c index 417c392ddf1c..3b0aedfb96e7 100644 --- a/arch/arm/kernel/perf_event.c +++ b/arch/arm/kernel/perf_event.c @@ -123,6 +123,12 @@ armpmu_get_max_events(void) } EXPORT_SYMBOL_GPL(armpmu_get_max_events); +int perf_num_counters(void) +{ + return armpmu_get_max_events(); +} +EXPORT_SYMBOL_GPL(perf_num_counters); + #define HW_OP_UNSUPPORTED 0xFFFF #define C(_x) \ |