Messages in this thread Patch in this message |  | | Date | Mon, 30 Jan 2012 15:53:51 -0600 (CST) | From | Christoph Lameter <> | Subject | Re: [PATCH] slub: prefetch next freelist pointer in slab_alloc() |
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On Mon, 30 Jan 2012, Geert Uytterhoeven wrote:
> On Tue, Jan 24, 2012 at 20:54, Pekka Enberg <penberg@kernel.org> wrote: > > On Fri, 16 Dec 2011, Eric Dumazet wrote: > >>> Recycling a page is a problem, since freelist link chain is hot on > >>> cpu(s) which freed objects, and possibly very cold on cpu currently > >>> owning slab. > > > > On Fri, 16 Dec 2011, Christoph Lameter wrote: > >> Good idea. How do the tcp benchmarks look after this? > >> > >> Looks sane. > >> > >> Acked-by: Christoph Lameter <cl@linux.com> > > > > Applied, thanks! > > m68k/allmodconfig at http://kisskb.ellerman.id.au/kisskb/buildresult/5527349/ > > mm/slub.c:274: error: implicit declaration of function 'prefetch' > > Sorry, didn't notice it earlier due to other build breakage in -next.
Does this fix it?
Subject: slub: include include for prefetch
Otherwise m68k breaks.
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Christoph Lameter <cl@linux.com>
--- mm/slub.c | 1 + 1 file changed, 1 insertion(+)
Index: linux-2.6/mm/slub.c =================================================================== --- linux-2.6.orig/mm/slub.c 2012-01-13 10:04:06.000000000 -0600 +++ linux-2.6/mm/slub.c 2012-01-30 15:51:55.000000000 -0600 @@ -29,6 +29,7 @@ #include <linux/math64.h> #include <linux/fault-inject.h> #include <linux/stacktrace.h> +#include <linux/prefetch.h>
#include <trace/events/kmem.h>
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