perf events, x86: Add Westmere stalled-cycles-frontend/backend events
authorIngo Molnar <mingo@elte.hu>
Sat, 30 Apr 2011 07:14:54 +0000 (09:14 +0200)
committerIngo Molnar <mingo@elte.hu>
Fri, 29 Apr 2011 14:22:37 +0000 (16:22 +0200)
Extend the Intel Westmere PMU driver with definitions for generic front-end and
back-end stall events.

( These are only approximations. )

Reported-by: David Ahern <dsahern@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/n/tip-7y40wib8n008io7hjpn1dsrm@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/kernel/cpu/perf_event_intel.c

index 7983b9a9533b9902b5722fa0a3546aa41e63cfa4..be8363adf4e265388317724432ff05598020bbb5 100644 (file)
@@ -1458,6 +1458,12 @@ static __init int intel_pmu_init(void)
                x86_pmu.enable_all = intel_pmu_nhm_enable_all;
                x86_pmu.pebs_constraints = intel_westmere_pebs_event_constraints;
                x86_pmu.extra_regs = intel_westmere_extra_regs;
+
+               /* UOPS_ISSUED.STALLED_CYCLES */
+               intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = 0x180010e;
+               /* UOPS_EXECUTED.CORE_ACTIVE_CYCLES,c=1,i=1 */
+               intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = 0x1803fb1;
+
                pr_cont("Westmere events, ");
                break;