linux-kernel - [PATCH 083/161] perf lock: Limit bad rate precision

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Date:	Mon, 14 Oct 2013 17:01:12 -0300
From:	Arnaldo Carvalho de Melo <acme@...radead.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	linux-kernel@...r.kernel.org, Davidlohr Bueso <davidlohr@...com>,
	Aswin Chandramouleeswaran <aswin@...com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Hitoshi Mitake <mitake@....info.waseda.ac.jp>,
	Peter Zijlstra <peterz@...radead.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 083/161] perf lock: Limit bad rate precision

From: Davidlohr Bueso <davidlohr@...com>

Two decimal precision should be enough for this.

Signed-off-by: Davidlohr Bueso <davidlohr@...com>
Cc: Aswin Chandramouleeswaran <aswin@...com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Hitoshi Mitake <mitake@....info.waseda.ac.jp>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Link: http://lkml.kernel.org/r/1378693159-8747-7-git-send-email-davidlohr@hp.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/builtin-lock.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c
index 780484fb59a0..972310cbeb63 100644
--- a/tools/perf/builtin-lock.c
+++ b/tools/perf/builtin-lock.c
@@ -686,7 +686,7 @@ static void print_bad_events(int bad, int total)
 
 	pr_info("\n=== output for debug===\n\n");
 	pr_info("bad: %d, total: %d\n", bad, total);
-	pr_info("bad rate: %f %%\n", (double)bad / (double)total * 100);
+	pr_info("bad rate: %.2f %%\n", (double)bad / (double)total * 100);
 	pr_info("histogram of events caused bad sequence\n");
 	for (i = 0; i < BROKEN_MAX; i++)
 		pr_info(" %10s: %d\n", name[i], bad_hist[i]);
-- 
1.8.1.4

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