diff options
Diffstat (limited to 'arch/x86/events/perf_event.h')
| -rw-r--r-- | arch/x86/events/perf_event.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/x86/events/perf_event.h b/arch/x86/events/perf_event.h index dea009ce0e4a..345442410a4d 100644 --- a/arch/x86/events/perf_event.h +++ b/arch/x86/events/perf_event.h @@ -407,6 +407,19 @@ struct cpu_hw_events { EVENT_CONSTRAINT(c, (1ULL << (32+n)), FIXED_EVENT_FLAGS) /* + * The special metric counters do not actually exist. They are calculated from + * the combination of the FxCtr3 + MSR_PERF_METRICS. + * + * The special metric counters are mapped to a dummy offset for the scheduler. + * The sharing between multiple users of the same metric without multiplexing + * is not allowed, even though the hardware supports that in principle. + */ + +#define METRIC_EVENT_CONSTRAINT(c, n) \ + EVENT_CONSTRAINT(c, (1ULL << (INTEL_PMC_IDX_METRIC_BASE + n)), \ + INTEL_ARCH_EVENT_MASK) + +/* * Constraint on the Event code + UMask */ #define INTEL_UEVENT_CONSTRAINT(c, n) \ |