diff options
Diffstat (limited to 'kernel/arch/x86/kernel/cpu/perf_event_knc.c')
| -rw-r--r-- | kernel/arch/x86/kernel/cpu/perf_event_knc.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/arch/x86/kernel/cpu/perf_event_knc.c b/kernel/arch/x86/kernel/cpu/perf_event_knc.c index 5b0c232d1..b931095e8 100644 --- a/kernel/arch/x86/kernel/cpu/perf_event_knc.c +++ b/kernel/arch/x86/kernel/cpu/perf_event_knc.c @@ -263,7 +263,9 @@ again: goto again; done: - knc_pmu_enable_all(0); + /* Only restore PMU state when it's active. See x86_pmu_disable(). */ + if (cpuc->enabled) + knc_pmu_enable_all(0); return handled; } |