lkml.org 
[lkml]   [2008]   [Oct]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [kerneloops] regression in 2.6.27 wrt "lock_page" and the "hwclock" program
On Sun, 12 Oct 2008 13:16:12 -0700 (PDT)
Linus Torvalds <torvalds@linux-foundation.org> wrote:

>
>
> On Sun, 12 Oct 2008, Karel Zak wrote:
> >
> > Any suggestion how to nicely implement "don't schedule me out"?
>
> There's nothing you can do. If you take a page fault, you're done.
> Forget about any "can't schedule" or "don't enable interrupts". The
> kernel _has_ to handle the page fault, and that may involve IO and
> thus random pauses. No ifs, buts or maybe's about it.
>
> This patch may or may not get rid of the warning, at least. It won't
> fix hwclock, but that's apparently unfixable from the kernel - the
> thing is just plain buggy.


it almost sounds like it's trying to do something that ... really the
kernel should be doing.

Karel: Can you describe what it WANTS to do so we can see if we can
just extend the linux kernel to do that the right way?

--
Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,
visit http://www.lesswatts.org


\
 
 \ /
  Last update: 2008-10-13 16:59    [W:0.120 / U:4.316 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site