From: Cyrill Gorcunov <gorcunov@openvz.org>
To: linux-kernel@vger.kernel.org
Cc: shawn@churchofgit.com, tglx@linutronix.de,
akpm@linux-foundation.org, avagin@openvz.org,
xemul@parallels.com, gorcunov@openvz.org
Subject: [rfc 0/2] timerfd -- implement missing parts to checkpoint and restore timerfd state
Date: Mon, 31 Mar 2014 21:54:07 +0400 [thread overview]
Message-ID: <20140331175407.400476950@openvz.org> (raw)
Timerfd interface provides to user-space almost all data needed to checkpoint
and restore it, the only missing parts are @clockid (and while @ticks can be
read by simple read() call there is no way to write its value back). The series
exports them to userspace via /proc/pid/fdinfo/N interface and with write()
call one can setup @ticks back to a timer.
Please take a look. This is rfc to figure out if there a better way
to handle timerfds (maybe ioctls with complete timer context or somthing).
Also I'm not sure in one aspect -- if someone sets non-zero @ticks to
a timer, should I mark it as expired? Thomas, could you please give
me some advice on it?
Cyrill
next reply other threads:[~2014-03-31 18:00 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-31 17:54 Cyrill Gorcunov [this message]
2014-03-31 17:54 ` [rfc 1/2] timerfd: Implement show_fdinfo method Cyrill Gorcunov
2014-03-31 19:43 ` Thomas Gleixner
2014-03-31 19:51 ` Cyrill Gorcunov
2014-03-31 17:54 ` [rfc 2/2] docs: procfs -- Document timerfd output Cyrill Gorcunov
2014-03-31 18:31 ` Andrey Wagin
2014-03-31 18:43 ` Cyrill Gorcunov
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