From: Michael Kerrisk Date: Fri, 2 May 2014 10:13:10 +0000 (+0200) Subject: timer_stats/doc: Fix /proc/timer_stats documentation X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=2779ac167b1a1bf8153dca9f3a141c6148c6b89f;p=deliverable%2Flinux.git timer_stats/doc: Fix /proc/timer_stats documentation Documentation/timers/timer_stats.txt claims: "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." 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 Cc: Randy Dunlap Link: http://lkml.kernel.org/r/53636FB6.9060407@gmail.com [ Small tidyup of the changelog. ] Signed-off-by: Ingo Molnar --- diff --git a/Documentation/timers/timer_stats.txt b/Documentation/timers/timer_stats.txt index 8abd40b22b7f..de835ee97455 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: