On Fri, 17 Nov 2006 10:59:07 +0100Has anyone verified that nmi watchdog works at all in 2.6.19-rc6? I haven't built a kernel since rc2, other things have been taking my time.
Mikael Pettersson <mikpe@xxxxxxxx> wrote:
Andrew Morton writes:
> On Thu, 16 Nov 2006 11:55:46 +0100
> Mikael Pettersson <mikpe@xxxxxxxx> 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.
Oh. OK.
Meanwhile, 2.6.19-rc6 remains unfixed.