diff options
| -rw-r--r-- | arch/x86/kernel/cpu/perf_counter.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/perf_counter.c b/arch/x86/kernel/cpu/perf_counter.c index 88ae8cebf3c..c19e927b697 100644 --- a/arch/x86/kernel/cpu/perf_counter.c +++ b/arch/x86/kernel/cpu/perf_counter.c @@ -280,8 +280,11 @@ static int __hw_perf_counter_init(struct perf_counter *counter) * If privileged enough, allow NMI events: */ hwc->nmi = 0; - if (capable(CAP_SYS_ADMIN) && hw_event->nmi) + if (hw_event->nmi) { + if (sysctl_perf_counter_priv && !capable(CAP_SYS_ADMIN)) + return -EACCES; hwc->nmi = 1; + } hwc->irq_period = hw_event->irq_period; if ((s64)hwc->irq_period <= 0 || hwc->irq_period > x86_pmu.max_period) |