On Sat, Jan 18, 2014 at 11:14:57AM -0800, H. Peter Anvin wrote: > >> Could something like this work? > >> > >> local_irq_enable(); > >> mwait_idle_with_hints(0,0); > >>
> This means an interrupt window is open and we can take an interrupt > between checking need_resched and the MWAIT, which couldn't happen with > __sti_mwait(). > > Are we sure that is actually safe? current_set_polling_and_test() vs resched_task() should be good that way, but I've got a terrible head-ache today so don't rely on anything much I say. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
