lkml.org 
[lkml]   [2006]   [Nov]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [discuss] Re: 2.6.19-rc5: known regressions (v3)
Andrew Morton writes:
> On Thu, 16 Nov 2006 11:55:46 +0100
> Mikael Pettersson <mikpe@it.uu.se> wrote:
>
> > Andrew Morton writes:
> > > Surely the appropriate behaviour is to allow oprofile to steal the NMI and
> > > to then put the NMI back to doing the watchdog thing after oprofile has
> > > finished with it.
> >
> > Which is _exactly_ what pre-2.6.19-rc1 kernels did. I implemented
> > the in-kernel API allowing real performance counter drivers like
> > oprofile (and perfctr) to claim the HW from the NMI watchdog,
> > do their work, and then release it which resumed the watchdog.
>
> OK. But from Andi's comments it seems that the NMI watchdog was failing to
> resume its operation.

It certainly worked when I originally implemented it. If it didn't work
that way before 2.6.19-rc1 butchered it then that would have been a bug
that should have been fixed.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-11-17 11:11    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site