linux-kernel - [tip:perf/core] perf diff: Introduce fmt_to_data

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Date:	Wed, 28 Jan 2015 07:07:29 -0800
From:	tip-bot for Namhyung Kim <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	a.p.zijlstra@...llo.nl, tglx@...utronix.de,
	linux-kernel@...r.kernel.org, kan.liang@...el.com,
	jolsa@...hat.com, hpa@...or.com, namhyung@...nel.org,
	acme@...hat.com, mingo@...nel.org, jolsa@...nel.org
Subject: [tip:perf/core] perf diff: Introduce fmt_to_data_file() helper

Commit-ID:  ff21cef67e85ae77682560973b8c80ef64125221
Gitweb:     http://git.kernel.org/tip/ff21cef67e85ae77682560973b8c80ef64125221
Author:     Namhyung Kim <namhyung@...nel.org>
AuthorDate: Thu, 8 Jan 2015 09:45:45 +0900
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Wed, 21 Jan 2015 13:24:34 -0300

perf diff: Introduce fmt_to_data_file() helper

The fmt_to_data_file() is to retrieve struct data__file from
perf_hpp_fmt which is embedded in diff_hpp_fmt.  It'll be used by sort
callback functions later.

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
Acked-by: Jiri Olsa <jolsa@...nel.org>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Kan Liang <kan.liang@...el.com>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: http://lkml.kernel.org/r/1420677949-6719-5-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/builtin-diff.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 3f86737..ae8f621 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -390,6 +390,15 @@ static void perf_evlist__collapse_resort(struct perf_evlist *evlist)
 	}
 }
 
+static struct data__file *fmt_to_data_file(struct perf_hpp_fmt *fmt)
+{
+	struct diff_hpp_fmt *dfmt = container_of(fmt, struct diff_hpp_fmt, fmt);
+	void *ptr = dfmt - dfmt->idx;
+	struct data__file *d = container_of(ptr, struct data__file, fmt);
+
+	return d;
+}
+
 static struct hist_entry*
 get_pair_data(struct hist_entry *he, struct data__file *d)
 {
@@ -407,8 +416,7 @@ get_pair_data(struct hist_entry *he, struct data__file *d)
 static struct hist_entry*
 get_pair_fmt(struct hist_entry *he, struct diff_hpp_fmt *dfmt)
 {
-	void *ptr = dfmt - dfmt->idx;
-	struct data__file *d = container_of(ptr, struct data__file, fmt);
+	struct data__file *d = fmt_to_data_file(&dfmt->fmt);
 
 	return get_pair_data(he, d);
 }
--
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