Re: [PATCH V2 0/6][RFC] futex: FUTEX_LOCK with optional adaptivespinning

From: Peter Zijlstra
Date: Tue Apr 06 2010 - 09:35:46 EST

On Tue, 2010-04-06 at 16:28 +0300, Avi Kivity wrote:
> Yes, but that's the best case for spinning. You could simply use a
> userspace spinlock in this case.

Userspace spinlocks are evil.. they should _never_ be used.

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