diff options
| -rw-r--r-- | kernel/perf_event.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/perf_event.c b/kernel/perf_event.c index 244ca3acb0ee..c5fa717cf099 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -5380,6 +5380,8 @@ free_dev: goto out; } +static struct lock_class_key cpuctx_mutex; + int perf_pmu_register(struct pmu *pmu, char *name, int type) { int cpu, ret; @@ -5428,6 +5430,7 @@ skip_type: cpuctx = per_cpu_ptr(pmu->pmu_cpu_context, cpu); __perf_event_init_context(&cpuctx->ctx); + lockdep_set_class(&cpuctx->ctx.mutex, &cpuctx_mutex); cpuctx->ctx.type = cpu_context; cpuctx->ctx.pmu = pmu; cpuctx->jiffies_interval = 1; |