linux-kernel - Re: [PATCH] cputopology: Always define CPU topology information [5th try]

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Message-ID: <20080613051654.GC21586@elte.hu>
Date:	Fri, 13 Jun 2008 07:16:54 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Ben Hutchings <bhutchings@...arflare.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Vegard Nossum <vegard.nossum@...il.com>
Subject: Re: [PATCH] cputopology: Always define CPU topology information
	[5th try]


* Ben Hutchings <bhutchings@...arflare.com> wrote:

> Not all architectures and configurations define CPU topology 
> information. This can result in an empty topology directory in sysfs, 
> and requires in-kernel users to protect all uses with #ifdef - see 
> <http://marc.info/?l=linux-netdev&m=120639033904472&w=2>.
> 
> The documentation of CPU topology specifies what the defaults should 
> be if only partial information is available from the hardware.  So we 
> can provide these defaults as a fallback.
> 
> This patch:
> 
> - Adds default definitions of the 4 topology macros to <linux/topology.h>
> - Changes drivers/base/topology.c to use the topology macros unconditionally
> - Updates documentation accordingly

applied to tip/core/topology - thanks Ben.

	Ingo
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