linux-kernel - [PATCH 21/36] perf/x86: Export PEBS load latency threshold register to sysfs

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Date:	Thu, 28 Mar 2013 14:02:21 -0300
From:	Arnaldo Carvalho de Melo <acme@...radead.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	linux-kernel@...r.kernel.org,
	Stephane Eranian <eranian@...gle.com>, peterz@...radead.org,
	ak@...ux.intel.com, acme@...hat.com, jolsa@...hat.com,
	namhyung.kim@....com
Subject: [PATCH 21/36] perf/x86: Export PEBS load latency threshold register to sysfs

From: Stephane Eranian <eranian@...gle.com>

Make the PEBS Load Latency threshold register layout
and encoding visible to user level tools.

Signed-off-by: Stephane Eranian <eranian@...gle.com>
Cc: peterz@...radead.org
Cc: ak@...ux.intel.com
Cc: acme@...hat.com
Cc: jolsa@...hat.com
Cc: namhyung.kim@....com
Link: http://lkml.kernel.org/r/1359040242-8269-10-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/kernel/cpu/perf_event_intel.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c
index d5ea5a0..ae6096b 100644
--- a/arch/x86/kernel/cpu/perf_event_intel.c
+++ b/arch/x86/kernel/cpu/perf_event_intel.c
@@ -1781,6 +1781,8 @@ static void intel_pmu_flush_branch_stack(void)
 
 PMU_FORMAT_ATTR(offcore_rsp, "config1:0-63");
 
+PMU_FORMAT_ATTR(ldlat, "config1:0-15");
+
 static struct attribute *intel_arch3_formats_attr[] = {
 	&format_attr_event.attr,
 	&format_attr_umask.attr,
@@ -1791,6 +1793,7 @@ static struct attribute *intel_arch3_formats_attr[] = {
 	&format_attr_cmask.attr,
 
 	&format_attr_offcore_rsp.attr, /* XXX do NHM/WSM + SNB breakout */
+	&format_attr_ldlat.attr, /* PEBS load latency */
 	NULL,
 };
 
-- 
1.7.1

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