diff options
Diffstat (limited to 'arch/sh/kernel')
| -rw-r--r-- | arch/sh/kernel/perf_event.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/arch/sh/kernel/perf_event.c b/arch/sh/kernel/perf_event.c index 8cb206597e0..d042989ceb4 100644 --- a/arch/sh/kernel/perf_event.c +++ b/arch/sh/kernel/perf_event.c @@ -230,11 +230,14 @@ static int sh_pmu_enable(struct perf_event *event) 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; @@ -248,8 +251,10 @@ static int sh_pmu_enable(struct perf_event *event) 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) |