From: Christoph Lameter <clameter@sgi.com>
To: Andi Kleen <ak@suse.de>
Cc: travis@sgi.com, Andrew Morton <akpm@linux-foundation.org>,
mingo@elte.hu, linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 5/5] x86: Add debug of invalid per_cpu map accesses
Date: Fri, 18 Jan 2008 10:56:41 -0800 (PST) [thread overview]
Message-ID: <Pine.LNX.4.64.0801181055320.30775@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <200801181933.05662.ak@suse.de>
On Fri, 18 Jan 2008, Andi Kleen wrote:
> On Friday 18 January 2008 19:30:16 travis@sgi.com wrote:
> > Provide a means to trap usages of per_cpu map variables before
> > they are setup. Define CONFIG_DEBUG_PER_CPU_MAPS to activate.
>
> Are you sure that debug option is generally useful enough
> to merge? It seems very specific to your patchkit, but I'm not
> sure it would be worth carrying forever in the kernel.
>
> Better would be probably to just unmap those areas anyways.
Its generally useful also for the cpu_alloc changes that may lead
to the moving around of early initialization code for consolidation of
code between i386 and x86_64 once Mike's initial patchset is in.
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next prev parent reply other threads:[~2008-01-18 18:56 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-18 18:30 [PATCH 0/5] x86: Reduce memory usage for large count NR_CPUs fixup travis
2008-01-18 18:30 ` [PATCH 1/5] x86: Change size of node ids from u8 to u16 fixup travis
2008-01-18 19:56 ` Jan Engelhardt
2008-01-18 19:59 ` Mike Travis
2008-01-19 4:03 ` Yinghai Lu
2008-01-19 4:36 ` David Rientjes
2008-01-19 4:43 ` Yinghai Lu
2008-01-19 5:17 ` David Rientjes
2008-01-19 6:20 ` Yinghai Lu
2008-01-19 21:25 ` Mike Travis
2008-01-19 22:33 ` David Rientjes
2008-01-20 0:41 ` Mike Travis
2008-01-20 1:31 ` Yinghai Lu
2008-01-20 6:22 ` David Rientjes
2008-01-18 18:30 ` [PATCH 2/5] x86: Change NR_CPUS arrays in numa_64 fixup travis
2008-01-18 18:30 ` [PATCH 3/5] x86: Change bios_cpu_apicid to percpu data variable fixup travis
2008-01-18 18:30 ` [PATCH 4/5] x86: Add config variables for SMP_MAX travis
2008-01-18 20:04 ` Ingo Oeser
2008-01-18 20:10 ` Christoph Lameter
2008-01-18 20:14 ` Mike Travis
2008-01-18 20:36 ` Andi Kleen
2008-01-18 20:48 ` Mike Travis
2008-01-18 21:02 ` [PATCH 4/5] x86: Add config variables for SMP_MAX II Andi Kleen
2008-01-18 20:48 ` [PATCH 4/5] x86: Add config variables for SMP_MAX Ingo Molnar
2008-01-18 20:55 ` Mike Travis
2008-01-18 20:58 ` Andi Kleen
2008-01-28 16:45 ` Paul Jackson
2008-01-28 17:00 ` Andi Kleen
2008-01-18 20:46 ` Ingo Molnar
2008-01-19 14:52 ` Ingo Molnar
2008-01-19 15:15 ` Ingo Molnar
2008-01-19 15:24 ` Ingo Molnar
2008-01-19 21:52 ` Mike Travis
2008-01-19 23:24 ` Mike Travis
2008-01-20 1:14 ` Mike Travis
2008-01-19 21:39 ` Mike Travis
2008-01-18 18:30 ` [PATCH 5/5] x86: Add debug of invalid per_cpu map accesses travis
2008-01-18 18:33 ` Andi Kleen
2008-01-18 18:49 ` Mike Travis
2008-01-18 18:56 ` Christoph Lameter [this message]
2008-01-18 20:49 ` Ingo Molnar
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