* Nick Piggin <[EMAIL PROTECTED]> wrote:
> > This means that even if some cpu is stuck in a spinlock loop with
> > interrupts disabled, you'd see it with this thing. The way it works
> > is that cross cpu vectored interrupts are disabled independently of
> > the processor interrupt level on sparc64.
>
> That's really sweet. I'd better put my code where my mouth is as
> well... this patch seems to be about the best we can do as a generic
> fallback without getting a dedicated vector (which has to be done in
> arch code anyway).
btw., in -rt we had something like this implemented as an NMI mechanism
(for x86) - that way it's guaranteed that we get some output even from
locked up CPUs.
Ingo
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
