linux-kernel - Re: Make yield_task

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Message-Id: <1203586980.6243.124.camel@lappy>
Date:	Thu, 21 Feb 2008 10:43:00 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	balbir@...ux.vnet.ibm.com
Cc:	Ingo Molnar <mingo@...e.hu>,
	"Zhang, Yanmin" <yanmin_zhang@...ux.intel.com>,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>,
	Dhaval Giani <dhaval@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org
Subject: Re: Make yield_task_fair more efficient


On Thu, 2008-02-21 at 15:01 +0530, Balbir Singh wrote:

> I have an alternate approach in mind (that I need to find time for),
> threaded-rbtrees. Walking the tree is really efficient, specially finding
> successor of a node.

Threading the rbtrees would be even more expensive, it would require a
list_head in each node and a full list operation for every tree
operation.

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