struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
struct hw_perf_event *hwc = &event->hw;
int idx = hwc->idx;
+ int ret = -EAGAIN;
+
+ perf_disable();
if (test_and_set_bit(idx, cpuc->used_mask)) {
idx = find_first_zero_bit(cpuc->used_mask, sh_pmu->num_events);
if (idx == sh_pmu->num_events)
- return -EAGAIN;
+ goto out;
set_bit(idx, cpuc->used_mask);
hwc->idx = idx;
sh_pmu->enable(hwc, idx);
perf_event_update_userpage(event);
-
- return 0;
+ ret = 0;
+out:
+ perf_enable();
+ return ret;
}
static void sh_pmu_read(struct perf_event *event)