}
static int
-validate_event(struct pmu_hw_events *hw_events,
- struct perf_event *event)
+validate_event(struct pmu *pmu, struct pmu_hw_events *hw_events,
+ struct perf_event *event)
{
- struct arm_pmu *armpmu = to_arm_pmu(event->pmu);
+ struct arm_pmu *armpmu;
struct hw_perf_event fake_event = event->hw;
struct pmu *leader_pmu = event->group_leader->pmu;
if (is_software_event(event))
return 1;
+ /*
+ * Reject groups spanning multiple HW PMUs (e.g. CPU + CCI). The
+ * core perf code won't check that the pmu->ctx == leader->ctx
+ * until after pmu->event_init(event).
+ */
+ if (event->pmu != pmu)
+ return 0;
+
if (event->pmu != leader_pmu || event->state < PERF_EVENT_STATE_OFF)
return 1;
if (event->state == PERF_EVENT_STATE_OFF && !event->attr.enable_on_exec)
return 1;
+ armpmu = to_arm_pmu(event->pmu);
return armpmu->get_event_idx(hw_events, &fake_event) >= 0;
}
memset(fake_used_mask, 0, sizeof(fake_used_mask));
fake_pmu.used_mask = fake_used_mask;
- if (!validate_event(&fake_pmu, leader))
+ if (!validate_event(event->pmu, &fake_pmu, leader))
return -EINVAL;
list_for_each_entry(sibling, &leader->sibling_list, group_entry) {
- if (!validate_event(&fake_pmu, sibling))
+ if (!validate_event(event->pmu, &fake_pmu, sibling))
return -EINVAL;
}
- if (!validate_event(&fake_pmu, event))
+ if (!validate_event(event->pmu, &fake_pmu, event))
return -EINVAL;
return 0;