Browse Source

perf/x86: Add Sandy Bridge constraints for CYCLE_ACTIVITY.*

Add CYCLE_ACTIVITY.CYCLES_NO_DISPATCH/CYCLES_L1D_PENDING constraints.

These recently documented events have restrictions to counter
0-3 and counter 2 respectively. The perf scheduler needs to know
that to schedule them correctly.

IvyBridge already has the necessary constraints.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: a.p.zijlstra@chello.nl
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1362784968-12542-1-git-send-email-andi@firstfloor.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Andi Kleen 12 years ago
parent
commit
f8378f5259
1 changed files with 2 additions and 0 deletions
  1. 2 0
      arch/x86/kernel/cpu/perf_event_intel.c

+ 2 - 0
arch/x86/kernel/cpu/perf_event_intel.c

@@ -109,6 +109,8 @@ static struct event_constraint intel_snb_event_constraints[] __read_mostly =
 	INTEL_EVENT_CONSTRAINT(0x48, 0x4), /* L1D_PEND_MISS.PENDING */
 	INTEL_UEVENT_CONSTRAINT(0x01c0, 0x2), /* INST_RETIRED.PREC_DIST */
 	INTEL_EVENT_CONSTRAINT(0xcd, 0x8), /* MEM_TRANS_RETIRED.LOAD_LATENCY */
+	INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_NO_DISPATCH */
+	INTEL_UEVENT_CONSTRAINT(0x02a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
 	EVENT_CONSTRAINT_END
 };