[patch] timer_stats, doc: Readout of /proc/timer_stats doesn't disable sampling

* [patch] timer_stats, doc: Readout of /proc/timer_stats doesn't disable sampling
@ 2014-05-02 10:13 Michael Kerrisk (man-pages)
  2014-05-05  8:46 ` [tip:timers/core] timer_stats/doc: Fix /proc/ timer_stats documentation tip-bot for Michael Kerrisk
  0 siblings, 1 reply; 4+ messages in thread
From: Michael Kerrisk (man-pages) @ 2014-05-02 10:13 UTC (permalink / raw)
  To: Ingo Molnar; +Cc: mtk.manpages, Randy Dunlap, lkml

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

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