lkml.org 
[lkml]   [2022]   [Aug]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC PATCH 7/8] workqueue: Remove the outer loop in maybe_create_worker()
On Thu, Aug 18, 2022 at 10:44:02PM +0800, Lai Jiangshan wrote:
> On Wed, Aug 17, 2022 at 6:08 AM Tejun Heo <tj@kernel.org> wrote:
> >
> > On Thu, Aug 04, 2022 at 04:41:34PM +0800, Lai Jiangshan wrote:
> > > worker_thread() always does the recheck after getting the manager role,
> > > so the recheck in the maybe_create_worker() is unneeded and is removed.
> >
> > So, before if multiple workers need to be created, a single manager would
> > create them all. After, we'd end up daisy chaining, right? One manager
> > creates one worker and goes to process one work item. The new worker wakes
> > up and becomes the manager and creates another worker and so on. That
> > doesn't seem like a desirable behavior.
> >
>
> The recheck is always in the same pool lock critical section, so the
> behavior isn't changed before/after this patch.

Ah, right you are.

Thanks.

--
tejun

\
 
 \ /
  Last update: 2022-08-19 19:54    [W:0.135 / U:0.384 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site