On Wednesday 14 November 2007, Nick Piggin wrote: > > > > All this does is prevent constant and needless checking for > > > > "do you want to preempt me now?" "now?" "now?" in "now?" the > > > > middle "now?" of "now?" i/o "now?" loops. > > > > > > Actually that's wrong. > > > > Certainly it's right for the mainstream kernel. Dropping a > > lock (other than a raw spinlock) does that checking; when a > > loop needs to acquire then drop such a lock, that's exactly > > what's going on. > > Obviously a raw spinlock is no different from a regular > spinlock upstream.
Erm, no. The raw ones don't have the extra logic when the lock gets dropped. - 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/
