linux-kernel - Re: [tip:core/locking 1/3] lockdep:reintroduce generation count to make BFS faster

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Message-Id: <1248267898.27058.1407.camel@twins>
Date:	Wed, 22 Jul 2009 15:04:58 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	tom.leiming@...il.com
Cc:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	mingo@...e.hu, torvalds@...ux-foundation.org
Subject: Re: [tip:core/locking 1/3] lockdep:reintroduce generation count to
 make BFS faster

On Wed, 2009-07-22 at 20:58 +0800, tom.leiming@...il.com wrote:
> From: Ming Lei <tom.leiming@...il.com>
> 
> We still can apply DaveM's generation count optimization to
> BFS, so reintroduce it.

Please elaborate, changelogs are important.

You fail to explain why it still applies and what the gains are.

(I can guess, but you explaining makes sure we're on the same page)

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