linux-kernel - Re: [PATCH 4/6] rbtree: faster augmented insert

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Message-ID: <1343417470.32120.39.camel@twins>
Date:	Fri, 27 Jul 2012 21:31:10 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Michel Lespinasse <walken@...gle.com>
Cc:	riel@...hat.com, daniel.santos@...ox.com, aarcange@...hat.com,
	dwmw2@...radead.org, akpm@...ux-foundation.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/6] rbtree: faster augmented insert

On Fri, 2012-07-20 at 05:31 -0700, Michel Lespinasse wrote:
> 
> rb_insert_color() is now a special case of rb_insert_augmented() with
> a do-nothing callback. I used inlining to optimize out the callback,
> with the intent that this would generate the same code as previously
> for rb_insert_augmented(). This didn't fully work, as my compiler output
> is now *smaller* than before for that function. Speed wise, they seem
> comparable though. 

It might be good to mention which particular GCC you're using.
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