lkml.org 
[lkml]   [2012]   [Apr]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCHSET] block: per-queue policy activation, take#2
On 2012-04-20 19:17, Tejun Heo wrote:
> Hello, Jens.
>
> On Fri, Apr 20, 2012 at 02:02:05PM +0200, Jens Axboe wrote:
>> Tejun, everything merged in cleanly. A boot test didn't not go so well,
>> I'm afraid. It complains about stuck RCU. Even with extra RCU
>> debugging/info turned on, it doesn't give my any extra info.
>>
>> Config is attached. I can try and debug this on Monday, for now I've
>> pulled it out of for-next again.
>
> Hmmm... it works fine with the same config here (qemu w/ 4 cpus
> configured). Doesn't stuck RCU usually come from unbalanced RCU
> lock/unlocking? That should trigger context or RCU warnings before
> anything else, weird. Anyways, it would be great if you can provide
> more info on how to reproduce the problem.

The machine just sat there. I'll get some more info out of it and run a
bisect too.

--
Jens Axboe



\
 
 \ /
  Last update: 2012-04-20 21:11    [W:0.094 / U:0.128 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site