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Message-ID: <53636FB6.9060407@gmail.com> Date: Fri, 02 May 2014 12:13:10 +0200 From: "Michael Kerrisk (man-pages)" <mtk.manpages@...il.com> To: Ingo Molnar <mingo@...e.hu> CC: mtk.manpages@...il.com, Randy Dunlap <rdunlap@...radead.org>, lkml <linux-kernel@...r.kernel.org> Subject: [patch] timer_stats, doc: Readout of /proc/timer_stats doesn't disable sampling From: Michael Kerrisk <mtk.manpages@...il.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@...il.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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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