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SubjectRe: Backport hr-tick fix into .25/.26

* Peter Zijlstra <peterz@infradead.org> wrote:

> On Tue, 2008-08-19 at 02:31 +0200, Ingo Molnar wrote:
> > * Justin Madru <jdm64@gawab.com> wrote:
> >
> > > This commit introduced the bug.
> > > commit 8f4d37ec073c17e2d4aa8851df5837d798606d6f
> > > sched: high-res preemption tick
> >
> > > And this one fixed it
> > >
> > > commit 31656519e132f6612584815f128c83976a9aaaef
> > > sched, x86: clean up hrtick implementation
> >
> > hm, the backport of 31656519 is a bit intrusive.
> >
> > find below is an (untested!) version of it - i havent even build-tested
> > it. Does it work for you? But this is Greg's call really.
> >
>
> It largely depends on all the new IPI stuff that went into 27 as well,
> so I'd be surprised if its easily backportable..

ah, i see. How about a simple patch then that disables hrtick [given
that it's now fixed .27 but the fix is too intrusive to backport]? Would
that be too risky for -stable?

Ingo


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