linux-kernel - Re: [PATCH 3/5] kmemleak: use rbtree instead of prio tree

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Message-ID: <20120809083127.GC14102@arm.com>
Date:	Thu, 9 Aug 2012 09:31:28 +0100
From:	Catalin Marinas <catalin.marinas@....com>
To:	Michel Lespinasse <walken@...gle.com>
Cc:	"riel@...hat.com" <riel@...hat.com>,
	"peterz@...radead.org" <peterz@...radead.org>,
	"vrajesh@...ch.edu" <vrajesh@...ch.edu>,
	"daniel.santos@...ox.com" <daniel.santos@...ox.com>,
	"aarcange@...hat.com" <aarcange@...hat.com>,
	"dwmw2@...radead.org" <dwmw2@...radead.org>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>
Subject: Re: [PATCH 3/5] kmemleak: use rbtree instead of prio tree

On Wed, Aug 08, 2012 at 06:07:39PM +0100, Michel Lespinasse wrote:
> kmemleak uses a tree where each node represents an allocated memory object
> in order to quickly find out what object a given address is part of.
> However, the objects don't overlap, so rbtrees are a better choice than
> prio tree for this use. They are both faster and have lower memory overhead.
> 
> Tested by booting a kernel with kmemleak enabled, loading the kmemleak_test
> module, and looking for the expected messages.
> 
> Signed-off-by: Michel Lespinasse <walken@...gle.com>

The patch looks fine to me but I'll give it a test later today and let
you know.

-- 
Catalin
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