linux-kernel - [PATCH 74/76] perf header: Remove attr_offset from perf

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Message-Id: <1374177003-3706-75-git-send-email-acme@infradead.org>
Date:	Thu, 18 Jul 2013 16:50:01 -0300
From:	Arnaldo Carvalho de Melo <acme@...radead.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	linux-kernel@...r.kernel.org, Jiri Olsa <jolsa@...hat.com>,
	Andi Kleen <ak@...ux.intel.com>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...e.hu>,
	Namhyung Kim <namhyung@...nel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 74/76] perf header: Remove attr_offset from perf_header

From: Jiri Olsa <jolsa@...hat.com>

Removing attr_offset from perf_header as it's possible to use it as a
local variable.

Signed-off-by: Jiri Olsa <jolsa@...hat.com>
Cc: Andi Kleen <ak@...ux.intel.com>
Cc: Corey Ashford <cjashfor@...ux.vnet.ibm.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: http://lkml.kernel.org/r/1374083403-14591-4-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/header.c | 5 +++--
 tools/perf/util/header.h | 1 -
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 035efe7..dcba56a 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -2272,6 +2272,7 @@ int perf_session__write_header(struct perf_session *session,
 	struct perf_file_attr   f_attr;
 	struct perf_header *header = &session->header;
 	struct perf_evsel *evsel;
+	u64 attr_offset;
 	int err;
 
 	lseek(fd, sizeof(f_header), SEEK_SET);
@@ -2285,7 +2286,7 @@ int perf_session__write_header(struct perf_session *session,
 		}
 	}
 
-	header->attr_offset = lseek(fd, 0, SEEK_CUR);
+	attr_offset = lseek(fd, 0, SEEK_CUR);
 
 	list_for_each_entry(evsel, &evlist->entries, node) {
 		f_attr = (struct perf_file_attr){
@@ -2315,7 +2316,7 @@ int perf_session__write_header(struct perf_session *session,
 		.size	   = sizeof(f_header),
 		.attr_size = sizeof(f_attr),
 		.attrs = {
-			.offset = header->attr_offset,
+			.offset = attr_offset,
 			.size   = evlist->nr_entries * sizeof(f_attr),
 		},
 		.data = {
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index 0bacb2d..6fa80f9 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -86,7 +86,6 @@ struct perf_session_env {
 
 struct perf_header {
 	bool			needs_swap;
-	s64			attr_offset;
 	u64			data_offset;
 	u64			data_size;
 	DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
-- 
1.8.1.4

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