Andrew Morton writes:
 > On Thu, 16 Nov 2006 11:55:46 +0100
 > Mikael Pettersson <[EMAIL PROTECTED]> 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.

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