lkml.org 
[lkml]   [2012]   [Aug]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 4/9 V3] workqueue: add non_manager_role_manager_mutex_unlock()
Hello, Lai.

On Thu, Aug 30, 2012 at 05:16:01PM +0800, Lai Jiangshan wrote:
> gcwq_unbind_fn() is unsafe even it is called from a work item.
> so we need non_manager_role_manager_mutex_unlock().
>
> If rebind_workers() is called from a work item, it is safe when there is
> no CPU_INTENSIVE items. but we can't disable CPU_INTENSIVE items,
> so it is still unsafe, we need non_manager_role_manager_mutex_unlock() too.

Can you please elaborate? Why is it not safe if there are
CPU_INTENSIVE items?

Thanks.

--
tejun


\
 
 \ /
  Last update: 2012-08-30 12:01    [W:0.075 / U:0.528 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site