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perf lock: Limit bad rate precision
author
Davidlohr Bueso
<davidlohr@hp.com>
Mon, 9 Sep 2013 02:19:18 +0000
(19:19 -0700)
committer
Arnaldo Carvalho de Melo
<acme@redhat.com>
Wed, 9 Oct 2013 14:23:54 +0000
(11:23 -0300)
Two decimal precision should be enough for this.
Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link:
http://lkml.kernel.org/r/1378693159-8747-7-git-send-email-davidlohr@hp.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/perf/builtin-lock.c
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diff --git
a/tools/perf/builtin-lock.c
b/tools/perf/builtin-lock.c
index
780484f
..
972310c
100644
(file)
--- 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: %
.2
f %%\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]);