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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/arm/kernel
parent4cbe75be5c6ae86bdc7daec864eeb2dfd66f48bb (diff)
downloadlinux-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.c6
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) \