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authorMatt Fleming <matt@console-pimps.org>2010-09-27 20:22:24 +0100
committerRobert Richter <robert.richter@amd.com>2010-10-11 10:38:13 +0200
commit3bf101ba42a1c89b5afbc7492e7647dae5e18735 (patch)
tree2501d57e827b283da1a0240630fe5988d155f07b /arch/sh/kernel/perf_event.c
parent4cbe75be5c6ae86bdc7daec864eeb2dfd66f48bb (diff)
downloadop-kernel-dev-3bf101ba42a1c89b5afbc7492e7647dae5e18735.zip
op-kernel-dev-3bf101ba42a1c89b5afbc7492e7647dae5e18735.tar.gz
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/perf_event.c')
-rw-r--r--arch/sh/kernel/perf_event.c9
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.
*/
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