Re: [PATCH 2/4, v2] x86: enlightenment for ticket spin locks - Xenimplementation
From: Peter Zijlstra
Date: Wed Jun 30 2010 - 04:56:39 EST
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
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