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-rw-r--r--arch/sh/kernel/perf_event.c11
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; 255out:
256 perf_enable();
257 return ret;
253} 258}
254 259
255static void sh_pmu_read(struct perf_event *event) 260static void sh_pmu_read(struct perf_event *event)