Fix timer_stats printout of events/sec

When using /proc/timer_stats on ppc64 I noticed the events/sec field wasnt
accurate.  Sometimes the integer part was incorrect due to rounding (we
werent taking the fractional seconds into consideration).

The fraction part is also wrong, we need to pad the printf statement and
take the bottom three digits of 1000 times the value.

Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/kernel/time/timer_stats.c b/kernel/time/timer_stats.c
index 3c38fb5eae1b4a6d5ccaab8b8b079b130af675fe..c36bb7ed0301e198753dc29eef982ddf02ed7faf 100644 (file)
--- a/kernel/time/timer_stats.c
+++ b/kernel/time/timer_stats.c
@@ -327,8 +327,9 @@ static int tstats_show(struct seq_file *m, void *v)
                ms = 1;
 
        if (events && period.tv_sec)
-               seq_printf(m, "%ld total events, %ld.%ld events/sec\n", events,
-                          events / period.tv_sec, events * 1000 / ms);
+               seq_printf(m, "%ld total events, %ld.%03ld events/sec\n",
+                          events, events * 1000 / ms,
+                          (events * 1000000 / ms) % 1000);
        else
                seq_printf(m, "%ld total events\n", events);