Oprofile module needs a function to get the number of pmu counters in its
high level interfaces.
Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@xxxxxxxxx>
---
arch/mips/include/asm/pmu.h | 1 +
arch/mips/kernel/perf_event.c | 11 +++++++++++
2 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/arch/mips/include/asm/pmu.h b/arch/mips/include/asm/pmu.h
index 16d4fcd..023a915 100644
--- a/arch/mips/include/asm/pmu.h
+++ b/arch/mips/include/asm/pmu.h
@@ -114,5 +114,6 @@ enum mips_pmu_id {
extern const char *mips_pmu_names[];
extern enum mips_pmu_id mipspmu_get_pmu_id(void);
+extern int mipspmu_get_max_events(void);
#endif /* __MIPS_PMU_H__ */
diff --git a/arch/mips/kernel/perf_event.c b/arch/mips/kernel/perf_event.c
index 67d301d..6f95220 100644
--- a/arch/mips/kernel/perf_event.c
+++ b/arch/mips/kernel/perf_event.c
@@ -145,6 +145,17 @@ enum mips_pmu_id mipspmu_get_pmu_id(void)
}
EXPORT_SYMBOL_GPL(mipspmu_get_pmu_id);
+int mipspmu_get_max_events(void)
+{
+ int max_events = 0;
+
+ if (mipspmu)
+ max_events = mipspmu->num_counters;
+
+ return max_events;
+}
+EXPORT_SYMBOL_GPL(mipspmu_get_max_events);
+
static int
mipspmu_event_set_period(struct perf_event *event,
struct hw_perf_event *hwc,
--
1.6.3.3
