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

From: Avi Kivity
Date: Tue Apr 06 2010 - 09:42:30 EST

On 04/06/2010 04:35 PM, Peter Zijlstra wrote:
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.

But in this case they're fastest. If we don't provide a non-evil alternative, people will use them.

error compiling committee.c: too many arguments to function

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