lkml.org 
[lkml]   [2014]   [Jun]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCHSET percpu/for-3.17] percpu: implement percpu_ref_reinit()
On Tue, Jun 17, 2014 at 09:07:59PM -0400, Tejun Heo wrote:
> Hello,
>
> Currently, percpu_ref destruction - freeing the percpu counter -
> happens when the percpu_ref is released. This while a bit more
> convenient restricts how percpu_ref can be used. It can't be
> initialized with static percpu area and it can't be reinitialized
> without going through percpu allocation.
>
> There are use cases which can take advantage of cycling percpu_ref
> through init/release multiple times. This patchset separates out
> percpu_ref destruction into percpu_exit() which should be invoked
> explicitly and introduces percpu_ref_reinit() which can be used to
> recycle a released percpu_ref.
>
> This patchset doesn't add any users. Patchset to use this will soon
> be posted.
>
> This patchset contains the following six patches.
>
> 0001-percpu-refcount-aio-use-percpu_ref_cancel_init-in-io.patch
> 0002-percpu-refcount-one-bit-is-enough-for-REF_STATUS.patch
> 0003-percpu-refcount-add-helpers-for-percpu_count-accesse.patch
> 0004-percpu-refcount-use-unsigned-long-for-pcpu_count-poi.patch
> 0005-percpu-refcount-require-percpu_ref-to-be-exited-expl.patch
> 0006-percpu-refcount-implement-percpu_ref_reinit-and-perc.patch

Applied to percpu/for-3.17.

Thanks.

--
tejun


\
 
 \ /
  Last update: 2014-06-28 15:01    [W:0.134 / U:1.172 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site