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    Subject[tip:perf/core] perf lock: Limit bad rate precision
    Commit-ID:  60a25cbc4a167fc0129296c3c640d8506a57acc5
    Gitweb: http://git.kernel.org/tip/60a25cbc4a167fc0129296c3c640d8506a57acc5
    Author: Davidlohr Bueso <davidlohr@hp.com>
    AuthorDate: Sun, 8 Sep 2013 19:19:18 -0700
    Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
    CommitDate: Wed, 9 Oct 2013 11:23:54 -0300

    perf lock: Limit bad rate precision

    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 | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c
    index 780484f..972310c 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]);

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