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[patch 10/12] Fix timer_stats printout of events/sec

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From: Greg KH <gregkh@...>
To: <linux-kernel@...>, <stable@...>, <torvalds@...>
Cc: Justin Forbes <jmforbes@...>, Zwane Mwaikambo <zwane@...>, Theodore Ts'o <tytso@...>, Randy Dunlap <rdunlap@...>, Dave Jones <davej@...>, Chuck Wolber <chuckw@...>, Chris Wedgwood <reviews@...>, Michael Krufky <mkrufky@...>, Chuck Ebbert <cebbert@...>, Domenico Andreoli <cavokz@...>, <akpm@...>, <alan@...>, <mingo@...>, <anton@...>
Subject: [patch 10/12] Fix timer_stats printout of events/sec
Date: Monday, October 8, 2007 - 2:06 pm

From: Anton Blanchard <anton@samba.org>

commit 74922be1485818ed368c4cf4f0b100f70bf01e08 upstream.

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>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

 kernel/time/timer_stats.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/kernel/time/timer_stats.c
+++ b/kernel/time/timer_stats.c
@@ -319,8 +319,9 @@ static int tstats_show(struct seq_file *
 		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);
 

-- 
-
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Messages in current thread:
[patch 00/12] 2.6.22.10 -stable review, Greg KH, (Mon Oct 8, 2:05 pm)
Re: [patch 00/12] 2.6.22.10 -stable review, Greg KH, (Mon Oct 8, 2:09 pm)
[patch 12/12] i386: Use global flag to disable broken local ..., Greg KH, (Mon Oct 8, 2:06 pm)
[patch 11/12] SELinux: clear parent death signal on SID tran..., Greg KH, (Mon Oct 8, 2:06 pm)
[patch 10/12] Fix timer_stats printout of events/sec, Greg KH, (Mon Oct 8, 2:06 pm)
[patch 09/12] Fix SMP poweroff hangs, Greg KH, (Mon Oct 8, 2:06 pm)
Re: [patch 09/12] Fix SMP poweroff hangs, Olof Johansson, (Tue Oct 9, 11:17 am)
Re: [stable] [patch 09/12] Fix SMP poweroff hangs, Greg KH, (Tue Oct 9, 6:20 pm)
Re: [stable] [patch 09/12] Fix SMP poweroff hangs, Thomas Gleixner, (Tue Oct 9, 7:21 pm)
Re: [stable] [patch 09/12] Fix SMP poweroff hangs, Greg KH, (Tue Oct 9, 7:28 pm)
Re: [stable] [patch 09/12] Fix SMP poweroff hangs, Linus Torvalds, (Tue Oct 9, 7:27 pm)
Re: [stable] [patch 09/12] Fix SMP poweroff hangs, Paul Mackerras, (Wed Oct 10, 8:24 pm)
[PATCH] powerpc: don't enable cpu hotplug on mpic-based pser..., Olof Johansson, (Tue Oct 9, 8:08 pm)
Re: [PATCH] powerpc: don't enable cpu hotplug on mpic-based ..., Stephen Rothwell, (Tue Oct 9, 8:18 pm)
[PATCH v2] powerpc: don't enable cpu hotplug on mpic-based p..., Olof Johansson, (Tue Oct 9, 8:38 pm)
Re: [PATCH v2] powerpc: don't enable cpu hotplug on mpic-bas..., Paul Mackerras, (Thu Oct 11, 1:52 am)
Re: [PATCH v2] powerpc: don't enable cpu hotplug on mpic-bas..., Olof Johansson, (Thu Oct 11, 1:59 am)
Re: [PATCH v2] powerpc: don't enable cpu hotplug on mpic-bas..., Milton Miller, (Wed Oct 10, 6:08 am)
Re: [PATCH v2] powerpc: don't enable cpu hotplug on mpic-bas..., Olof Johansson, (Wed Oct 10, 12:43 pm)
Re: [stable] [patch 09/12] Fix SMP poweroff hangs, Olof Johansson, (Tue Oct 9, 8:03 pm)
Re: [stable] [patch 09/12] Fix SMP poweroff hangs, Thomas Gleixner, (Tue Oct 9, 7:35 pm)
Re: [stable] [patch 09/12] Fix SMP poweroff hangs, Linus Torvalds, (Wed Oct 10, 1:29 am)
[patch 08/12] NLM: Fix a circular lock dependency in lockd, Greg KH, (Mon Oct 8, 2:06 pm)
Re: [patch 08/12] NLM: Fix a circular lock dependency in lockd, Roel Kluin, (Mon Oct 8, 4:01 pm)
Re: [patch 08/12] NLM: Fix a circular lock dependency in lockd, Trond Myklebust, (Tue Oct 9, 11:00 am)
Re: [patch 08/12] NLM: Fix a circular lock dependency in lockd, Greg KH, (Tue Oct 9, 11:13 am)
Re: [patch 08/12] NLM: Fix a circular lock dependency in lockd, Trond Myklebust, (Tue Oct 9, 11:27 am)
Re: [stable] [patch 08/12] NLM: Fix a circular lock dependen..., Greg KH, (Tue Oct 9, 4:41 pm)
[patch 07/12] i2c-algo-bit: Read block data bugfix, Greg KH, (Mon Oct 8, 2:06 pm)
[patch 06/12] Fix ppp_mppe kernel stack usage., Greg KH, (Mon Oct 8, 2:06 pm)
[patch 05/12] libata: update drive blacklists, Greg KH, (Mon Oct 8, 2:06 pm)
[patch 04/12] sky2: fix transmit state on resume, Greg KH, (Mon Oct 8, 2:06 pm)
[patch 03/12] sky2: fix VLAN receive processing, Greg KH, (Mon Oct 8, 2:06 pm)
[patch 02/12] sky2: reduce impact of watchdog timer, Greg KH, (Mon Oct 8, 2:06 pm)
[patch 01/12] scsi_transport_spi: fix domain validation fail..., Greg KH, (Mon Oct 8, 2:06 pm)