Messages in this thread Patch in this message | | | From | Lin Ming <> | Subject | [PATCH] perf events, x86: Add SandyBridge stalled-cycles-frontend/backend events | Date | Fri, 6 May 2011 07:14:02 +0000 |
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Extend the Intel SandyBridge PMU driver with definitions for generic front-end and back-end stall events.
( As commit 3011203 says, these are only approximations. )
Signed-off-by: Lin Ming <ming.m.lin@intel.com> --- arch/x86/kernel/cpu/perf_event_intel.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c index c1ec7a5..61cbf48 100644 --- a/arch/x86/kernel/cpu/perf_event_intel.c +++ b/arch/x86/kernel/cpu/perf_event_intel.c @@ -1485,6 +1485,12 @@ static __init int intel_pmu_init(void) x86_pmu.event_constraints = intel_snb_event_constraints; x86_pmu.pebs_constraints = intel_snb_pebs_events; + + /* UOPS_ISSUED.ANY,c=1,i=1 to count stall cycles */ + intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = 0x180010e; + /* UOPS_DISPATCHED.THREAD,c=1,i=1 to count stall cycles*/ + intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = 0x18001b1; + pr_cont("SandyBridge events, "); break; -- 1.7.4.4
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