linux-kernel - [tip:perf/core] perf/x86/rapl: Use unified perf_event_sysfs

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Message-ID: <tip-d3bcd64bbc35076a80c56918c905ddb167d097d8@git.kernel.org>
Date:	Wed, 6 Jan 2016 10:53:01 -0800
From:	tip-bot for Huang Rui <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	jolsa@...hat.com, rric@...nel.org, luto@...capital.net,
	acme@...nel.org, mingo@...nel.org, peterz@...radead.org,
	acme@...hat.com, ray.huang@....com,
	dasaratharaman.chandramouli@...el.com, vincent.weaver@...ne.edu,
	torvalds@...ux-foundation.org, bp@...e.de, hpa@...or.com,
	linux-kernel@...r.kernel.org, eranian@...gle.com,
	tglx@...utronix.de
Subject: [tip:perf/core] perf/x86/rapl:
  Use unified perf_event_sysfs_show instead of special interface

Commit-ID:  d3bcd64bbc35076a80c56918c905ddb167d097d8
Gitweb:     http://git.kernel.org/tip/d3bcd64bbc35076a80c56918c905ddb167d097d8
Author:     Huang Rui <ray.huang@....com>
AuthorDate: Fri, 4 Dec 2015 18:07:41 +0800
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Wed, 6 Jan 2016 11:15:35 +0100

perf/x86/rapl: Use unified perf_event_sysfs_show instead of special interface

Actually, rapl_sysfs_show is a duplicate of perf_event_sysfs_show. We
prefer to use the unified interface.

Signed-off-by: Huang Rui <ray.huang@....com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Cc: Andy Lutomirski <luto@...capital.net>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Borislav Petkov <bp@...e.de>
Cc: Dasaratharaman Chandramouli<dasaratharaman.chandramouli@...el.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Robert Richter <rric@...nel.org>
Cc: Stephane Eranian <eranian@...gle.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Vince Weaver <vincent.weaver@...ne.edu>
Link: http://lkml.kernel.org/r/1449223661-2437-1-git-send-email-ray.huang@amd.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/kernel/cpu/perf_event_intel_rapl.c | 23 +++++------------------
 1 file changed, 5 insertions(+), 18 deletions(-)

diff --git a/arch/x86/kernel/cpu/perf_event_intel_rapl.c b/arch/x86/kernel/cpu/perf_event_intel_rapl.c
index fb5843d..24a351a 100644
--- a/arch/x86/kernel/cpu/perf_event_intel_rapl.c
+++ b/arch/x86/kernel/cpu/perf_event_intel_rapl.c
@@ -109,11 +109,11 @@ static struct kobj_attribute format_attr_##_var =		\
 
 #define RAPL_CNTR_WIDTH 32 /* 32-bit rapl counters */
 
-#define RAPL_EVENT_ATTR_STR(_name, v, str)				\
-static struct perf_pmu_events_attr event_attr_##v = {			\
-	.attr		= __ATTR(_name, 0444, rapl_sysfs_show, NULL),	\
-	.id		= 0,						\
-	.event_str	= str,						\
+#define RAPL_EVENT_ATTR_STR(_name, v, str)					\
+static struct perf_pmu_events_attr event_attr_##v = {				\
+	.attr		= __ATTR(_name, 0444, perf_event_sysfs_show, NULL),	\
+	.id		= 0,							\
+	.event_str	= str,							\
 };
 
 struct rapl_pmu {
@@ -405,19 +405,6 @@ static struct attribute_group rapl_pmu_attr_group = {
 	.attrs = rapl_pmu_attrs,
 };
 
-static ssize_t rapl_sysfs_show(struct device *dev,
-			       struct device_attribute *attr,
-			       char *page)
-{
-	struct perf_pmu_events_attr *pmu_attr = \
-		container_of(attr, struct perf_pmu_events_attr, attr);
-
-	if (pmu_attr->event_str)
-		return sprintf(page, "%s", pmu_attr->event_str);
-
-	return 0;
-}
-
 RAPL_EVENT_ATTR_STR(energy-cores, rapl_cores, "event=0x01");
 RAPL_EVENT_ATTR_STR(energy-pkg  ,   rapl_pkg, "event=0x02");
 RAPL_EVENT_ATTR_STR(energy-ram  ,   rapl_ram, "event=0x03");
--
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