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perf/arm_cspmu: Add callback to reset filter config 

Implementer may need to reset a filter config when
stopping a counter, thus adding a callback for this.

Reviewed-by: Ilkka Koskinen <ilkka@os.amperecomputing.com>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Besar Wicaksono <bwicaksono@nvidia.com>
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Besar Wicaksono 2025-09-30 00:26:01 +00:00 committed by Will Deacon
parent c3d78c34ad
commit a2573bc790
2 changed files with 7 additions and 1 deletions
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4
drivers/perf/arm_cspmu/arm_cspmu.c
View File

@ -815,6 +815,10 @@ static void arm_cspmu_stop(struct perf_event *event, int pmu_flags)
return;
arm_cspmu_disable_counter(cspmu, hwc->idx);
if (cspmu->impl.ops.reset_ev_filter)
cspmu->impl.ops.reset_ev_filter(cspmu, event);
arm_cspmu_event_update(event);
hwc->state |= PERF_HES_STOPPED | PERF_HES_UPTODATE;

4
drivers/perf/arm_cspmu/arm_cspmu.h
View File

@ -152,11 +152,13 @@ struct arm_cspmu_impl_ops {
bool (*is_cycle_counter_event)(const struct perf_event *event);
/* Decode event type/id from configs */
u32 (*event_type)(const struct perf_event *event);
/* Set event filters */
/* Set/reset event filters */
void (*set_cc_filter)(struct arm_cspmu *cspmu,
const struct perf_event *event);
void (*set_ev_filter)(struct arm_cspmu *cspmu,
const struct perf_event *event);
void (*reset_ev_filter)(struct arm_cspmu *cspmu,
const struct perf_event *event);
/* Implementation specific event validation */
int (*validate_event)(struct arm_cspmu *cspmu,
struct perf_event *event);