linux-kernel - Re: [PATCH 2/2] mutex: Apply adaptive spinning on mutex

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Message-ID: <1301485924.4859.181.camel@twins>
Date:	Wed, 30 Mar 2011 13:52:04 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Chris Mason <chris.mason@...cle.com>
Cc:	Tejun Heo <tj@...nel.org>, Ingo Molnar <mingo@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-btrfs <linux-btrfs@...r.kernel.org>
Subject: Re: [PATCH 2/2] mutex: Apply adaptive spinning on mutex_trylock()

On Wed, 2011-03-30 at 07:46 -0400, Chris Mason wrote:
> 
> In this case, the only thing we're really missing is a way to mutex_lock
> without the cond_resched() 

So you're trying to explicitly avoid a voluntary preemption point? Seems
like a bad idea, normally people add those :-)
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