linux-kernel - Re: linux-next: Tree for June 5

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Date:	Fri, 6 Jun 2008 13:21:07 +0200
From:	"Vegard Nossum" <vegard.nossum@...il.com>
To:	"Andrew Morton" <akpm@...ux-foundation.org>
Cc:	"Ingo Molnar" <mingo@...e.hu>,
	"Stephen Rothwell" <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	"Mike Travis" <travis@....com>
Subject: Re: linux-next: Tree for June 5

On Fri, Jun 6, 2008 at 12:54 PM, Andrew Morton
<akpm@...ux-foundation.org> wrote:
> On Fri, 6 Jun 2008 02:48:11 -0700 Andrew Morton <akpm@...ux-foundation.org> wrote:

...

> commit a9ad585c8a18f7ba754b85f5786976609b9d7d29
> Author: Mike Travis <travis@....com>
> Date:   Mon May 12 21:21:12 2008 +0200
>
>    x86: remove the static 256k node_to_cpumask_map
>
>      * Consolidate node_to_cpumask operations and remove the 256k
>        byte node_to_cpumask_map.  This is done by allocating the
>        node_to_cpumask_map array after the number of possible nodes
>        (nr_node_ids) is known.
>
>      * Debug printouts when CONFIG_DEBUG_PER_CPU_MAPS is active have
>        been increased.  It now shows faults when calling node_to_cpumask()
>        and node_to_cpumask_ptr().

This might be obvious, but maybe enabling CONFIG_DEBUG_PER_CPU_MAPS
will give you some more (valuable) info? It looks to me like maybe
nr_node_ids is returning inconsistent numbers or used somewhere before
it's properly initialized.


Vegard

-- 
"The animistic metaphor of the bug that maliciously sneaked in while
the programmer was not looking is intellectually dishonest as it
disguises that the error is the programmer's own creation."
	-- E. W. Dijkstra, EWD1036
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