linux-kernel - Re: [guv v2 04/31] net: Replace __get_cpu

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Message-ID: <00000140e432c014-26be929a-a2f1-4064-8147-0efcb5dc3bec-000000@email.amazonses.com>
Date:	Tue, 3 Sep 2013 14:21:07 +0000
From:	Christoph Lameter <cl@...ux.com>
To:	David Miller <davem@...emloft.net>
cc:	dhowells@...hat.com, tj@...nel.org, akpm@...uxfoundation.org,
	netdev@...r.kernel.org, linux-arch@...r.kernel.org,
	srostedt@...hat.com, linux-kernel@...r.kernel.org
Subject: Re: [guv v2 04/31] net: Replace __get_cpu_var uses

On Mon, 2 Sep 2013, David Miller wrote:

> It really will cache pre-computed __thread pointer calculations across
> sched().

On x86 the compiler could use the segment prefix and then it may work.

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