linux-kernel - [tip:perf/urgent] perf/x86: Update event scheduling constraints for AMD family 15h models

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Date:	Sat, 19 May 2012 03:29:17 -0700
From:	tip-bot for Robert Richter <robert.richter@....com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, eranian@...gle.com, hpa@...or.com,
	mingo@...nel.org, robert.richter@....com, peterz@...radead.org,
	tglx@...utronix.de
Subject: [tip:perf/urgent] perf/x86:
  Update event scheduling constraints for AMD family 15h models

Commit-ID:  5bcdf5e4fee3c45e1281c25e4941f2163cb28c65
Gitweb:     http://git.kernel.org/tip/5bcdf5e4fee3c45e1281c25e4941f2163cb28c65
Author:     Robert Richter <robert.richter@....com>
AuthorDate: Fri, 18 May 2012 12:40:42 +0200
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Fri, 18 May 2012 14:07:46 +0200

perf/x86: Update event scheduling constraints for AMD family 15h models

This update is for newer family 15h cpu models from 0x02 to 0x1f.

Signed-off-by: Robert Richter <robert.richter@....com>
Acked-by: Peter Zijlstra <peterz@...radead.org>
Cc: Stephane Eranian <eranian@...gle.com>
Cc: stable@...r.kernel.org # v2.6.39+
Link: http://lkml.kernel.org/r/1337337642-1621-1-git-send-email-robert.richter@amd.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/kernel/cpu/perf_event_amd.c |   11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/cpu/perf_event_amd.c b/arch/x86/kernel/cpu/perf_event_amd.c
index 95e7fe1..9edc786 100644
--- a/arch/x86/kernel/cpu/perf_event_amd.c
+++ b/arch/x86/kernel/cpu/perf_event_amd.c
@@ -493,6 +493,7 @@ static __initconst const struct x86_pmu amd_pmu = {
  * 0x023	DE	PERF_CTL[2:0]
  * 0x02D	LS	PERF_CTL[3]
  * 0x02E	LS	PERF_CTL[3,0]
+ * 0x031	LS	PERF_CTL[2:0] (**)
  * 0x043	CU	PERF_CTL[2:0]
  * 0x045	CU	PERF_CTL[2:0]
  * 0x046	CU	PERF_CTL[2:0]
@@ -506,10 +507,12 @@ static __initconst const struct x86_pmu amd_pmu = {
  * 0x0DD	LS	PERF_CTL[5:0]
  * 0x0DE	LS	PERF_CTL[5:0]
  * 0x0DF	LS	PERF_CTL[5:0]
+ * 0x1C0	EX	PERF_CTL[5:3]
  * 0x1D6	EX	PERF_CTL[5:0]
  * 0x1D8	EX	PERF_CTL[5:0]
  *
- * (*) depending on the umask all FPU counters may be used
+ * (*)  depending on the umask all FPU counters may be used
+ * (**) only one unitmask enabled at a time
  */
 
 static struct event_constraint amd_f15_PMC0  = EVENT_CONSTRAINT(0, 0x01, 0);
@@ -559,6 +562,12 @@ amd_get_event_constraints_f15h(struct cpu_hw_events *cpuc, struct perf_event *ev
 			return &amd_f15_PMC3;
 		case 0x02E:
 			return &amd_f15_PMC30;
+		case 0x031:
+			if (hweight_long(hwc->config & ARCH_PERFMON_EVENTSEL_UMASK) <= 1)
+				return &amd_f15_PMC20;
+			return &emptyconstraint;
+		case 0x1C0:
+			return &amd_f15_PMC53;
 		default:
 			return &amd_f15_PMC50;
 		}
--
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