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

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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>
This commit is contained in:
Lin Ming 2011-05-06 07:14:02 +00:00 committed by Ingo Molnar
parent e7e7ee2eab
commit e04d1b23f9
1 changed files with 6 additions and 0 deletions
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6
arch/x86/kernel/cpu/perf_event_intel.c
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@ -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;