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From: "Michael Kerrisk (man-pages)" <mtk.manpages@gmail.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: mtk.manpages@gmail.com, Randy Dunlap <rdunlap@infradead.org>,
	lkml <linux-kernel@vger.kernel.org>
Subject: [patch] timer_stats, doc: Readout of /proc/timer_stats doesn't disable sampling
Date: Fri, 02 May 2014 12:13:10 +0200	[thread overview]
Message-ID: <53636FB6.9060407@gmail.com> (raw)

From: Michael Kerrisk <mtk.manpages@gmail.com>

Some simple testing shows that reading from /proc/timer_stats
does not disable sampling. Looking back over past source code,
it appears that it never did.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
---
 Documentation/timers/timer_stats.txt | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Documentation/timers/timer_stats.txt b/Documentation/timers/timer_stats.txt
index 8abd40b..de835ee 100644
--- a/Documentation/timers/timer_stats.txt
+++ b/Documentation/timers/timer_stats.txt
@@ -39,9 +39,9 @@ To stop a sample period issue:
 The statistics can be retrieved by:
 # cat /proc/timer_stats
 
-The readout of /proc/timer_stats automatically disables sampling. The sampled
-information is kept until a new sample period is started. This allows multiple
-readouts.
+While sampling is enabled, each readout from /proc/timer_stats will see
+newly updated statistics. Once sampling is disabled, the sampled information
+is kept until a new sample period is started. This allows multiple readouts.
 
 Sample output of /proc/timer_stats:
 
-- 
1.9.0

             reply	other threads:[~2014-05-02 10:13 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-02 10:13 Michael Kerrisk (man-pages) [this message]
2014-05-05  8:46 ` [tip:timers/core] timer_stats/doc: Fix /proc/ timer_stats documentation tip-bot for Michael Kerrisk
  -- strict thread matches above, loose matches on Subject: below --
2014-05-02  9:29 [patch] timer_stats, doc: Readout of /proc/timer_stats doesn't disable sampling Michael Kerrisk (man-pages)
2014-05-02  9:37 ` Michael Kerrisk

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