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Commit e04d1b23 authored by Lin Ming's avatar Lin Ming Committed by Ingo Molnar
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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 30112039 "perf events, x86: Add Westmere stalled-cycles-frontend/backend
  events" says, these are only approximations. )

Signed-off-by: default avatarLin 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: default avatarIngo Molnar <mingo@elte.hu>
parent e7e7ee2e

arch/x86/kernel/cpu/perf_event_intel.c

+6 −0
Original line number Diff line number Diff line
@@ -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;