linux-kernel - Re: [UnifiedV4 00/16] The Unified slab allocator (V4)

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Message-ID: <20101012182531.GH30667@csn.ul.ie>
Date:	Tue, 12 Oct 2010 19:25:31 +0100
From:	Mel Gorman <mel@....ul.ie>
To:	Pekka Enberg <penberg@...nel.org>
Cc:	Christoph Lameter <cl@...ux.com>,
	Pekka Enberg <penberg@...helsinki.fi>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, David Rientjes <rientjes@...gle.com>,
	npiggin@...nel.dk, yanmin_zhang@...ux.intel.com
Subject: Re: [UnifiedV4 00/16] The Unified slab allocator (V4)

On Wed, Oct 06, 2010 at 11:01:35AM +0300, Pekka Enberg wrote:
> (Adding more people who've taken interest in slab performance in the
> past to CC.)
> 

I have not come even close to reviewing this yet but I made a start on
putting it through a series of tests. It fails to build on ppc64

  CC      mm/slub.o
mm/slub.c:1477: warning: 'drain_alien_caches' declared inline after being called
mm/slub.c:1477: warning: previous declaration of 'drain_alien_caches' was here
mm/slub.c: In function `alloc_shared_caches':
mm/slub.c:1748: error: `cpu_info' undeclared (first use in this function)
mm/slub.c:1748: error: (Each undeclared identifier is reported only once
mm/slub.c:1748: error: for each function it appears in.)
mm/slub.c:1748: warning: type defaults to `int' in declaration of `type name'
mm/slub.c:1748: warning: type defaults to `int' in declaration of `type name'
mm/slub.c:1748: warning: type defaults to `int' in declaration of `type name'
mm/slub.c:1748: warning: type defaults to `int' in declaration of `type name'
mm/slub.c:1748: error: invalid type argument of `unary *'
make[1]: *** [mm/slub.o] Error 1
make: *** [mm] Error 2

I didn't look closely yet but cpu_info is an arch-specific variable.
Checking to see if there is a known fix yet before setting aside time to
dig deeper.

-- 
Mel Gorman
Part-time Phd Student                          Linux Technology Center
University of Limerick                         IBM Dublin Software Lab
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