linux-kernel - [tip:perf/core] perf annotate: No need to calculate notes->start twice

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Date:   Sun, 25 Mar 2018 15:24:00 -0700
From:   tip-bot for Arnaldo Carvalho de Melo <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     jolsa@...nel.org, mingo@...nel.org, namhyung@...nel.org,
        ak@...ux.intel.com, hpa@...or.com, adrian.hunter@...el.com,
        dsahern@...il.com, acme@...hat.com, wangnan0@...wei.com,
        tglx@...utronix.de, linux-kernel@...r.kernel.org,
        yao.jin@...ux.intel.com
Subject: [tip:perf/core] perf annotate: No need to calculate notes->start
 twice

Commit-ID:  425859ff0de33a2362bec2a2c7ca486f87c13100
Gitweb:     https://git.kernel.org/tip/425859ff0de33a2362bec2a2c7ca486f87c13100
Author:     Arnaldo Carvalho de Melo <acme@...hat.com>
AuthorDate: Tue, 20 Mar 2018 11:03:30 -0300
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Wed, 21 Mar 2018 12:53:43 -0300

perf annotate: No need to calculate notes->start twice

Since we already set notes->start to map__rip_2objdump(map, sym->start)
in symbol__annotate2(), no need to calculate that address again in
symbol__calc_lines(), just use notes->start.

Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: Andi Kleen <ak@...ux.intel.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Jin Yao <yao.jin@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Wang Nan <wangnan0@...wei.com>
Link: https://lkml.kernel.org/n/tip-ycxlg8mm5ueuj21w6gi62l7g@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/annotate.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index a7111871440e..666f62c58e1a 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -2230,7 +2230,7 @@ void annotation__update_column_widths(struct annotation *notes)
 }
 
 static void annotation__calc_lines(struct annotation *notes, struct map *map,
-				  struct rb_root *root, u64 start)
+				  struct rb_root *root)
 {
 	struct annotation_line *al;
 	struct rb_root tmp_root = RB_ROOT;
@@ -2251,8 +2251,8 @@ static void annotation__calc_lines(struct annotation *notes, struct map *map,
 		if (percent_max <= 0.5)
 			continue;
 
-		al->path = get_srcline(map->dso, start + al->offset, NULL,
-				       false, true, start + al->offset);
+		al->path = get_srcline(map->dso, notes->start + al->offset, NULL,
+				       false, true, notes->start + al->offset);
 		insert_source_line(&tmp_root, al);
 	}
 
@@ -2263,9 +2263,8 @@ static void symbol__calc_lines(struct symbol *sym, struct map *map,
 			      struct rb_root *root)
 {
 	struct annotation *notes = symbol__annotation(sym);
-	u64 start = map__rip_2objdump(map, sym->start);
 
-	annotation__calc_lines(notes, map, root, start);
+	annotation__calc_lines(notes, map, root);
 }
 
 int symbol__tty_annotate2(struct symbol *sym, struct map *map,