On Mon, Apr 15, 2013 at 03:37:59PM +0100, Waiman Long wrote: > If it is confirmed that all the supported architectures can allow a > negative mutex count without incorrect behavior, we can then back > out the architecture specific change and allow the mutex count to > go to any negative number. That should further reduce contention for > non-x86 architecture. > > If this is not the case, this patch should be dropped.
A good starting point might be to look at the asm-generic mutex implementations, which clears up the majority of architectures. A cursory glance at mutex-dec.h suggests that it's OK to me... Will -- 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/
