On Tue, May 01, 2007 at 03:51:25PM -0700, Bill Irwin wrote: > On Mon, Apr 30, 2007 at 08:15:11PM +0100, Christoph Hellwig wrote: > >> So if you want to invest some time into getting this into mergeable > >> shape I'd suggest you redo the patch series in the following way: > >> patch 1: dynamic allocated irq stacks > > On Tue, May 01, 2007 at 05:36:06PM -0500, Matt Mackall wrote: > > Can we register them lazily at request_irq time? > > These IRQ stacks are per-cpu, not per-IRQ. It may make sense to > implement per-IRQ stacks, in which case dynamic allocation at the time > of request_irq() will make sense. > > Would you like me to implement per-IRQ IRQ stacks?
It's probably the "right" thing to do, but it does have higher overhead for most systems. But it also gives a very obvious migration path to -rt's irq threads. -- Mathematics is the supreme nostalgia of our time. - 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/