lkml.org 
[lkml]   [2015]   [May]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v2 RT 3.18] irq_work: Provide a soft-irq based queue
On 2015-05-14 21:58, Sebastian Andrzej Siewior wrote:
> * Jan Kiszka | 2015-04-23 09:35:59 [+0200]:
>
>> Instead of turning all irq_work requests into lazy ones on -rt, just
>> move their execution from hard into soft-irq context.
>>
>> This resolves deadlocks of ftrace which will queue work from arbitrary
>> contexts, including those that have locks held that are needed for
>> raising a soft-irq.
>>
>> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
> Applied

The thread went on, and Mike suggested an alternative implementation [1]
that works fine and is even cleaner. Let's pick his.

Jan

[1] http://thread.gmane.org/gmane.linux.kernel/1937960


[unhandled content-type:application/pgp-signature]
\
 
 \ /
  Last update: 2015-05-15 10:01    [W:0.059 / U:0.816 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site