Messages in this thread Patch in this message | | | Date | Fri, 6 May 2011 07:40:49 GMT | From | tip-bot for Lin Ming <> | Subject | [tip:perf/core] perf events, x86: Add SandyBridge stalled-cycles-frontend/backend events |
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Commit-ID: e04d1b23f9706186187dcb0be1a752e48dcc540b Gitweb: http://git.kernel.org/tip/e04d1b23f9706186187dcb0be1a752e48dcc540b Author: Lin Ming <ming.m.lin@intel.com> AuthorDate: Fri, 6 May 2011 07:14:02 +0000 Committer: Ingo Molnar <mingo@elte.hu> CommitDate: Fri, 6 May 2011 09:37:03 +0200
perf events, x86: Add SandyBridge stalled-cycles-frontend/backend events
Extend the Intel SandyBridge PMU driver with definitions for generic front-end and back-end stall events.
( As commit 3011203 "perf events, x86: Add Westmere stalled-cycles-frontend/backend events" says, these are only approximations. )
Signed-off-by: Lin Ming <ming.m.lin@intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/1304666042-17577-1-git-send-email-ming.m.lin@intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu> --- 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 e61539b..7cf2ec5 100644 --- a/arch/x86/kernel/cpu/perf_event_intel.c +++ b/arch/x86/kernel/cpu/perf_event_intel.c @@ -1474,6 +1474,12 @@ 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;
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