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Signed-off-by: Ilkka Koskinen --- drivers/perf/arm_cspmu/arm_cspmu.c | 13 ++++++++++++- drivers/perf/arm_cspmu/arm_cspmu.h | 4 ++++ 2 files changed, 16 insertions(+), 1 deletion(-) diff --git a/drivers/perf/arm_cspmu/arm_cspmu.c b/drivers/perf/arm_cspmu/arm_cspmu.c index 72ca4f56347c..9021d1878250 100644 --- a/drivers/perf/arm_cspmu/arm_cspmu.c +++ b/drivers/perf/arm_cspmu/arm_cspmu.c @@ -559,7 +559,7 @@ 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)) { @@ -593,6 +593,12 @@ 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; @@ -618,6 +624,7 @@ static bool arm_cspmu_validate_event(struct pmu *pmu, */ static bool arm_cspmu_validate_group(struct perf_event *event) { + struct arm_cspmu *cspmu = to_arm_cspmu(event->pmu); struct perf_event *sibling, *leader = event->group_leader; struct arm_cspmu_hw_events fake_hw_events; @@ -635,6 +642,10 @@ static bool arm_cspmu_validate_group(struct perf_event *event) return false; } + if (cspmu->impl.ops.validate_group && + cspmu->impl.ops.validate_group(event)) + return false; + return arm_cspmu_validate_event(event->pmu, &fake_hw_events, event); } diff --git a/drivers/perf/arm_cspmu/arm_cspmu.h b/drivers/perf/arm_cspmu/arm_cspmu.h index f89ae2077164..291cedb196ea 100644 --- a/drivers/perf/arm_cspmu/arm_cspmu.h +++ b/drivers/perf/arm_cspmu/arm_cspmu.h @@ -106,6 +106,10 @@ struct arm_cspmu_impl_ops { void (*set_ev_filter)(struct arm_cspmu *cspmu, struct hw_perf_event *hwc, u32 filter); + /* Implementation specific group validation */ + int (*validate_group)(struct perf_event *event); + /* Implementation specific event validation */ + int (*validate_event)(struct arm_cspmu *cspmu, struct perf_event *new); /* Hide/show unsupported events */ umode_t (*event_attr_is_visible)(struct kobject *kobj, struct attribute *attr, int unused);