Re: [PATCH 2/4, v2] x86: enlightenment for ticket spin locks - Xenimplementation

[Peter Zijlstra]

On Wed, 2010-06-30 at 09:52 +0100, Jan Beulich wrote:
> > why is that a rwlock?, those things are useless.
> 
> Because potentially each CPU's lock gets acquired for reading during
> unlock, while only the locking CPU's one needs to be acquired for
> writing during lock. 

Can you say: scalability nightmare? but then its Xen code so who cares..

/me pretends he never saw it
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/