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SubjectRe: [PATCH v2 0/3] Deferrable timers support for timerfd API

Hello all,

one remark - timerfd is not documented in linux Documentation directory
at all.
I think it's better to have such description.


On 01/13/2014 02:43 PM, Alexey Perevalov wrote:
> Hello dear community.
>
> This is reworked patch set of original Anton's Vorontsov
> proposal regarding unified deferrable timers in the user space.
> http://lwn.net/Articles/514707/
>
>
> I decided to resubmit it due we found it usefull for us too.
>
> timerfd was modified since Anton's commit, Alarm support was added.
> This isn't only rebase. Anton's previous version used deferrable timer
> in couple with hrtimer. This version uses only deferrable timer. It
> mean the behaviour of overrun number is different.
> e.g. if you don't poll one second timer for a 10 seconds - you'll get
> 10 overruns with hrtimer, but for deferrable timer it could be another value.
>
> Anton Vorontsov (3):
> kernel/time: Add new helpers to convert ktime to/from jiffies
> timerfd: Factor out timer-type unspecific timerfd_expire()
> timerfd: Add support for deferrable timers
>
> fs/timerfd.c | 127 +++++++++++++++++++++++++++++++++++------------
> include/linux/jiffies.h | 4 +-
> include/linux/ktime.h | 3 +-
> include/linux/timerfd.h | 4 +-
> kernel/time.c | 23 +++++++++
> 5 files changed, 126 insertions(+), 35 deletions(-)
>


--
Best regards,
Alexey Perevalov


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