Some platforms may use e.g. different filtering mechanism and, thus,
may need different way to validate the events and group.
Signed-off-by: Ilkka Koskinen <ilkka@xxxxxxxxxxxxxxxxxxxxxx>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
---
drivers/perf/arm_cspmu/arm_cspmu.c | 8 +++++++-
drivers/perf/arm_cspmu/arm_cspmu.h | 3 +++
2 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/perf/arm_cspmu/arm_cspmu.c b/drivers/perf/arm_cspmu/arm_cspmu.c
index 94f6856ec786..585ce96ac03f 100644
--- a/drivers/perf/arm_cspmu/arm_cspmu.c
+++ b/drivers/perf/arm_cspmu/arm_cspmu.c
@@ -572,7 +572,7 @@ static void arm_cspmu_disable(struct pmu *pmu)
static int arm_cspmu_get_event_idx(struct arm_cspmu_hw_events *hw_events,
struct perf_event *event)
{
- int idx;
+ int idx, ret;
struct arm_cspmu *cspmu = to_arm_cspmu(event->pmu);
if (supports_cycle_counter(cspmu)) {
@@ -606,6 +606,12 @@ static int arm_cspmu_get_event_idx(struct arm_cspmu_hw_events *hw_events,
if (idx >= cspmu->num_logical_ctrs)
return -EAGAIN;
+ if (cspmu->impl.ops.validate_event) {
+ ret = cspmu->impl.ops.validate_event(cspmu, event);
+ if (ret)
+ return ret;
+ }
+
set_bit(idx, hw_events->used_ctrs);
return idx;
diff --git a/drivers/perf/arm_cspmu/arm_cspmu.h b/drivers/perf/arm_cspmu/arm_cspmu.h
index 274ca3d10578..05577f74b8a0 100644
--- a/drivers/perf/arm_cspmu/arm_cspmu.h
+++ b/drivers/perf/arm_cspmu/arm_cspmu.h
@@ -107,6 +107,9 @@ struct arm_cspmu_impl_ops {
/* Set event filter */
void (*set_ev_filter)(struct arm_cspmu *cspmu,
struct hw_perf_event *hwc, u32 filter);
+ /* Implementation specific event validation */
+ int (*validate_event)(struct arm_cspmu *cspmu,
+ struct perf_event *event);
/* Hide/show unsupported events */
umode_t (*event_attr_is_visible)(struct kobject *kobj,
struct attribute *attr, int unused);
--
2.41.0
