On Thu, 01 Apr 2010 09:37:51 +1100 Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> wrote: > On Wed, 2010-03-31 at 14:57 -0700, H. Peter Anvin wrote: > > > > The question still remains what the incremental cost is of doing > > irqsave/irqrestore. > > The only other option is to have local_irq_enable() check a global > (system_state ?) before enabling. Almost as gross ... > Add an irq-disable-depth counter to the task_struct, fix all the bugs which that exposes.. But these things are all utterly gross. The bottom line is that radix_tree_init() is manifestly unsuited to being called with local interrupts disabled. 773e3eb7b81e5ba13b5155dfb3bb75b8ce37f8f9 was just a wrong patch. -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
