lkml.org 
[lkml]   [2009]   [Oct]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH 07/19] stop_machine: reimplement without using workqueue
Date
On Thu, 1 Oct 2009 05:39:06 pm Tejun Heo wrote:
> stop_machine() is the only user of RT workqueue. Reimplement it using
> kthreads directly and rip RT support from workqueue. This is in
> preparation of concurrency managed workqueue.

Seems reasonable, but:

> void stop_machine_destroy(void)
> {
> + get_online_cpus();
> mutex_lock(&setup_lock);

Did you test hotplug cpu after this change? Maybe this works fine, but it's
always the one we break when we play with this code :(

Thanks!
Rusty.


\
 
 \ /
  Last update: 2009-10-07 01:31    [W:2.130 / U:0.892 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site