Skip to contentSkip to conversation

perf events, x86: Add Westmere stalled-cycles-frontend/backend events

tip:perf/stat tip-bot for Ingo Molnar 1 participant 1 message Apr 29, 2011

Subsystems (2)
x86 perf events
lore
Share & tools
lore

tip-bot for Ingo Molnar

author
#0 lore raw
Commit-ID:  301120396b766ae4480e52ece220516a1707822b
Gitweb:     http://git.kernel.org/tip/301120396b766ae4480e52ece220516a1707822b
Author:     Ingo Molnar <[email protected]>
AuthorDate: Sat, 30 Apr 2011 09:14:54 +0200
Committer:  Ingo Molnar <[email protected]>
CommitDate: Fri, 29 Apr 2011 16:22:37 +0200

perf events, x86: Add Westmere stalled-cycles-frontend/backend events

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 <[email protected]>
Cc Peter Zijlstra <[email protected]>
Cc Arnaldo Carvalho de Melo <[email protected]>
Cc Frederic Weisbecker <[email protected]>
Link http://lkml.kernel.org/n/[email protected] open here
Signed-off-by Ingo Molnar <[email protected]>
---
 arch/x86/kernel/cpu/perf_event_intel.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
arch/x86/kernel/cpu/perf_event_intel.c +6 -0
index 7983b9a..be8363a 100644
@@ -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;