linux-kernel - Re: [patch] x86, numa: Fix CONFIG_DEBUG_PER_CPU

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Message-ID: <4D263350.5070008@kernel.org>
Date:	Thu, 06 Jan 2011 13:25:36 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	David Rientjes <rientjes@...gle.com>
CC:	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel@...r.kernel.org
Subject: Re: [patch] x86, numa: Fix CONFIG_DEBUG_PER_CPU_MAPS without NUMA
 emulation

On 01/06/2011 12:39 PM, David Rientjes wrote:
> On Thu, 30 Dec 2010, David Rientjes wrote:
> 
>> "x86, numa: Fake node-to-cpumask for NUMA emulation" broke the build when
>> CONFIG_DEBUG_PER_CPU_MAPS is set and CONFIG_NUMA_EMU is not.  This is
>> because it is possible to map a cpu to multiple nodes when NUMA emulation
>> is used; the patch required a physical node address table to find those
>> nodes that was only available when CONFIG_NUMA_EMU was enabled.
>>
>> This extracts the common debug functionality to its own function for
>> CONFIG_DEBUG_PER_CPU_MAPS and uses it regardless of whether
>> CONFIG_NUMA_EMU is set or not.
>>
>> NUMA emulation will now iterate over the set of possible nodes for each
>> cpu and call the new debug function whereas only the cpu's node will be
>> used without NUMA emulation enabled.
>>
>> Reported-by: Ingo Molnar <mingo@...e.hu>
>> Signed-off-by: David Rientjes <rientjes@...gle.com>
> 
> Ingo, do you know what the status of this fix is?  It's required for 
> x86/numa to build and I'd hate to see all of this fixes miss .38 because 
> of this failure.

If x86/numa would not be pushed to Linus. x86/apic-cleanups should be pushed at first.
or Thomas will take care of it?

Thanks

Yinghai


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