perf, x86: Pass enable bit mask to __x86_pmu_enable_event()

To reuse this function for events with different enable bit masks,
this mask is part of the function's argument list now.

The function will be used later to control ibs events too.
Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1271190201-25705-6-git-send-email-robert.richter@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/kernel/cpu/perf_event.c

@@ -844,10 +844,10 @@ void hw_perf_enable(void)
 	x86_pmu.enable_all(added);
 }
 
-static inline void __x86_pmu_enable_event(struct hw_perf_event *hwc)
+static inline void __x86_pmu_enable_event(struct hw_perf_event *hwc,
+					  u64 enable_mask)
 {
-	wrmsrl(hwc->config_base + hwc->idx,
-			      hwc->config | ARCH_PERFMON_EVENTSEL_ENABLE);
+	wrmsrl(hwc->config_base + hwc->idx, hwc->config | enable_mask);
 }
 
 static inline void x86_pmu_disable_event(struct perf_event *event)
@@ -919,7 +919,8 @@ static void x86_pmu_enable_event(struct perf_event *event)
 {
 	struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
 	if (cpuc->enabled)
-		__x86_pmu_enable_event(&event->hw);
+		__x86_pmu_enable_event(&event->hw,
+				       ARCH_PERFMON_EVENTSEL_ENABLE);
 }
 
 /*

arch/x86/kernel/cpu/perf_event_intel.c

@@ -513,7 +513,8 @@ static void intel_pmu_nhm_enable_all(int added)
 			if (!event)
 				continue;
 
-			__x86_pmu_enable_event(&event->hw);
+			__x86_pmu_enable_event(&event->hw,
+					       ARCH_PERFMON_EVENTSEL_ENABLE);
 		}
 	}
 	intel_pmu_enable_all(added);
@@ -617,7 +618,7 @@ static void intel_pmu_enable_event(struct perf_event *event)
 	if (unlikely(event->attr.precise))
 		intel_pmu_pebs_enable(event);
 
-	__x86_pmu_enable_event(hwc);
+	__x86_pmu_enable_event(hwc, ARCH_PERFMON_EVENTSEL_ENABLE);
 }
 
 /*