diff options
-rw-r--r-- | arch/x86/kernel/cpu/perf_event_intel.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c index d8d86d014008..1297bf15cb88 100644 --- a/arch/x86/kernel/cpu/perf_event_intel.c +++ b/arch/x86/kernel/cpu/perf_event_intel.c | |||
@@ -712,7 +712,7 @@ static int intel_pmu_handle_irq(struct pt_regs *regs) | |||
712 | struct perf_sample_data data; | 712 | struct perf_sample_data data; |
713 | struct cpu_hw_events *cpuc; | 713 | struct cpu_hw_events *cpuc; |
714 | int bit, loops; | 714 | int bit, loops; |
715 | u64 ack, status; | 715 | u64 status; |
716 | 716 | ||
717 | perf_sample_data_init(&data, 0); | 717 | perf_sample_data_init(&data, 0); |
718 | 718 | ||
@@ -728,6 +728,7 @@ static int intel_pmu_handle_irq(struct pt_regs *regs) | |||
728 | 728 | ||
729 | loops = 0; | 729 | loops = 0; |
730 | again: | 730 | again: |
731 | intel_pmu_ack_status(status); | ||
731 | if (++loops > 100) { | 732 | if (++loops > 100) { |
732 | WARN_ONCE(1, "perfevents: irq loop stuck!\n"); | 733 | WARN_ONCE(1, "perfevents: irq loop stuck!\n"); |
733 | perf_event_print_debug(); | 734 | perf_event_print_debug(); |
@@ -736,7 +737,6 @@ again: | |||
736 | } | 737 | } |
737 | 738 | ||
738 | inc_irq_stat(apic_perf_irqs); | 739 | inc_irq_stat(apic_perf_irqs); |
739 | ack = status; | ||
740 | 740 | ||
741 | intel_pmu_lbr_read(); | 741 | intel_pmu_lbr_read(); |
742 | 742 | ||
@@ -761,8 +761,6 @@ again: | |||
761 | x86_pmu_stop(event); | 761 | x86_pmu_stop(event); |
762 | } | 762 | } |
763 | 763 | ||
764 | intel_pmu_ack_status(ack); | ||
765 | |||
766 | /* | 764 | /* |
767 | * Repeat if there is more work to be done: | 765 | * Repeat if there is more work to be done: |
768 | */ | 766 | */ |