[lkml]   [2013]   [Feb]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH 2/3] stop_machine: dequeue work before signal completion

On Wed, Feb 6, 2013 at 6:21 PM, Namhyung Kim <> wrote:
>> Why does this matter? It's inside spinlock. What's being made better
>> by this change?
> IIUC the work should be deleted from the list, otherwise it'd trigger
> BUG_ON when the cpu gets online again.

Ah, okay, the original code was missing list_del_init(), so we end up
with trashy work list if CPU goes down while there are pending work
items which will trigger BUG_ON() later when the CPU comes back on.

Hillf, can you please redo the patch description? I can't tell what
the patch is about from the description at all. If it's a bug fix,
describe the bug and maybe accompany with oops trace if possible, and
then describe how it's fixed.



 \ /
  Last update: 2013-02-07 04:01    [W:0.037 / U:0.528 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site