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| author | Matt Fleming <matt@console-pimps.org> | 2010-09-27 19:22:24 (GMT) |
|---|---|---|
| committer | Robert Richter <robert.richter@amd.com> | 2010-10-11 08:38:13 (GMT) |
| commit | 3bf101ba42a1c89b5afbc7492e7647dae5e18735 (patch) | |
| tree | 2501d57e827b283da1a0240630fe5988d155f07b /arch/sh/kernel | |
| parent | 4cbe75be5c6ae86bdc7daec864eeb2dfd66f48bb (diff) | |
| download | linux-fsl-qoriq-3bf101ba42a1c89b5afbc7492e7647dae5e18735.tar.xz | |
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/sh/kernel')
| -rw-r--r-- | arch/sh/kernel/perf_event.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/sh/kernel/perf_event.c b/arch/sh/kernel/perf_event.c index 7a3dc35..2cb9ad5 100644 --- a/arch/sh/kernel/perf_event.c +++ b/arch/sh/kernel/perf_event.c @@ -59,6 +59,15 @@ static inline int sh_pmu_initialized(void) return !!sh_pmu; } +int perf_num_counters(void) +{ + if (!sh_pmu) + return 0; + + return sh_pmu->num_events; +} +EXPORT_SYMBOL_GPL(perf_num_counters); + /* * Release the PMU if this is the last perf_event. */ |