> > This patch provides a simple api to let oprofile hook into
> > the NMI interrupt for the perfctr profiler.
>
> I would suggest using a notifier list instead (include/linux/notifier.h)
> This would handle multiple users cleanly.
How ? The only safe way I can see would be to spin lock around the NMI
(and try lock when an NMI arrives). This would either make every NMI
contend on a single spinlock, or require a NR_CPUS-sized array of
spinlocks, which is just ugly. And that wouldn't solve the
power-management problem - any NMI users need to collaborate to disable
NMI generation on a suspend.
regards
john
-- "CUT IT OUT FACEHEAD" - jeffk - 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/