linux-kernel - [PATCH 6/8] perf annotate browser: Count the numbers of jump sources to a target

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Date:	Sat, 12 May 2012 16:53:05 -0300
From:	Arnaldo Carvalho de Melo <acme@...radead.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	linux-kernel@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Mike Galbraith <efault@....de>,
	Namhyung Kim <namhyung@...il.com>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Stephane Eranian <eranian@...gle.com>
Subject: [PATCH 6/8] perf annotate browser: Count the numbers of jump sources to a target

From: Arnaldo Carvalho de Melo <acme@...hat.com>

Instead of simply marking an offset as a jump target. So that we can
implement a new feature: showing "jumpy" targets, I.e. addresses that
lots of places jump to.

Cc: David Ahern <dsahern@...il.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Mike Galbraith <efault@....de>
Cc: Namhyung Kim <namhyung@...il.com>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Stephane Eranian <eranian@...gle.com>
Link: http://lkml.kernel.org/n/tip-vc7b0u5yxgrubig0q61ayhxf@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/ui/browsers/annotate.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c
index 06367c1..4463626 100644
--- a/tools/perf/ui/browsers/annotate.c
+++ b/tools/perf/ui/browsers/annotate.c
@@ -16,7 +16,7 @@ struct browser_disasm_line {
 	double		percent;
 	u32		idx;
 	int		idx_asm;
-	bool		jump_target;
+	int		jump_sources;
 };
 
 struct annotate_browser {
@@ -98,7 +98,7 @@ static void annotate_browser__write(struct ui_browser *self, void *entry, int ro
 		if (!ab->use_offset) {
 			printed = scnprintf(bf, sizeof(bf), "%" PRIx64 ": ", addr);
 		} else {
-			if (bdl->jump_target) {
+			if (bdl->jump_sources) {
 				printed = scnprintf(bf, sizeof(bf), "%*" PRIx64 ": ",
 						    ab->addr_width, addr);
 			} else {
@@ -707,7 +707,7 @@ static void annotate_browser__mark_jump_targets(struct annotate_browser *browser
 			continue;
 
 		bdlt = disasm_line__browser(dlt);
-		bdlt->jump_target = true;
+		++bdlt->jump_sources;
 	}
 		
 }
-- 
1.7.9.2.358.g22243

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