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docs: Procfs -- Document timerfd output

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Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Andrey Vagin <avagin@openvz.org>
Cc: Pavel Emelyanov <xemul@parallels.com>
Cc: Vladimir Davydov <vdavydov@parallels.com>
Link: http://lkml.kernel.org/r/20140715215703.199905126@openvz.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Cyrill Gorcunov 2014-07-16 01:54:53 +04:00 committed by Thomas Gleixner
parent af9c4957cf
commit 854d06d9fc
1 changed files with 19 additions and 0 deletions
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19
Documentation/filesystems/proc.txt
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@ -1743,6 +1743,25 @@ pair provide additional information particular to the objects they represent.
While the first three lines are mandatory and always printed, the rest is
optional and may be omitted if no marks created yet.
Timerfd files
~~~~~~~~~~~~~
pos: 0
flags: 02
mnt_id: 9
clockid: 0
ticks: 0
settime flags: 01
it_value: (0, 49406829)
it_interval: (1, 0)
where 'clockid' is the clock type and 'ticks' is the number of the timer expirations
that have occurred [see timerfd_create(2) for details]. 'settime flags' are
flags in octal form been used to setup the timer [see timerfd_settime(2) for
details]. 'it_value' is remaining time until the timer exiration.
'it_interval' is the interval for the timer. Note the timer might be set up
with TIMER_ABSTIME option which will be shown in 'settime flags', but 'it_value'
still exhibits timer's remaining time.
------------------------------------------------------------------------------
Configuring procfs