Re: [PATCH RFC ticketlock] Auto-queued ticketlock

From: Benjamin Herrenschmidt
Date: Fri Jun 14 2013 - 21:28:56 EST

On Fri, 2013-06-14 at 14:17 -0400, Waiman Long wrote:
> With some minor changes, the current patch can be modified to support
> debugging lock for 32-bit system. For 64-bit system, we can apply a
> similar concept for debugging lock with cmpxchg_double. However, for
> architecture that does not have cmpxchg_double support, it will be out
> of luck and we probably couldn't support the same feature in debugging
> mode. It will have to fall back to taking the lock.

That means only x86_64 and s390 would benefit from it ... I'm sure we can do better :-)


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at