diff options
Diffstat (limited to 'arch/sh/kernel/perf_event.c')
-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 8cb206597e0c..d042989ceb45 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) | |||
230 | struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); | 230 | struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); |
231 | struct hw_perf_event *hwc = &event->hw; | 231 | struct hw_perf_event *hwc = &event->hw; |
232 | int idx = hwc->idx; | 232 | int idx = hwc->idx; |
233 | int ret = -EAGAIN; | ||
234 | |||
235 | perf_disable(); | ||
233 | 236 | ||
234 | if (test_and_set_bit(idx, cpuc->used_mask)) { | 237 | if (test_and_set_bit(idx, cpuc->used_mask)) { |
235 | idx = find_first_zero_bit(cpuc->used_mask, sh_pmu->num_events); | 238 | idx = find_first_zero_bit(cpuc->used_mask, sh_pmu->num_events); |
236 | if (idx == sh_pmu->num_events) | 239 | if (idx == sh_pmu->num_events) |
237 | return -EAGAIN; | 240 | goto out; |
238 | 241 | ||
239 | set_bit(idx, cpuc->used_mask); | 242 | set_bit(idx, cpuc->used_mask); |
240 | hwc->idx = idx; | 243 | hwc->idx = idx; |
@@ -248,8 +251,10 @@ static int sh_pmu_enable(struct perf_event *event) | |||
248 | sh_pmu->enable(hwc, idx); | 251 | sh_pmu->enable(hwc, idx); |
249 | 252 | ||
250 | perf_event_update_userpage(event); | 253 | perf_event_update_userpage(event); |
251 | 254 | ret = 0; | |
252 | return 0; | 255 | out: |
256 | perf_enable(); | ||
257 | return ret; | ||
253 | } | 258 | } |
254 | 259 | ||
255 | static void sh_pmu_read(struct perf_event *event) | 260 | static void sh_pmu_read(struct perf_event *event) |