On Mon, 2009-03-02 at 18:55 +0100, Bartlomiej Zolnierkiewicz wrote: > > Could we make just the IDE driver itself enable interrupts? Sure. But that > > Actually it has been doing it for years (some host drivers don't do this by > default and still need "hdparm -u" or equivalent but I was planning to change > it for 2.6.30). What does it use to do that? A local_irq_enable() in hardirq context will make lockdep yell bloody murder :-). Then there is local_irq_enable_in_hardirq(), which plain simply lies when lockdep is enabled -- IOW it would generate horrid irq latencies. Not having to deal with IRQ recursion in lockdep helps. -- 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
