linux-kernel - Re: [PATCH] slub: prefetch next freelist pointer in slab

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Date:	Thu, 9 Feb 2012 21:00:22 +0100
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Christoph Lameter <cl@...ux.com>
Cc:	Pekka Enberg <penberg@...nel.org>,
	Eric Dumazet <eric.dumazet@...il.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	David Rientjes <rientjes@...gle.com>,
	"Alex,Shi" <alex.shi@...el.com>, Shaohua Li <shaohua.li@...el.com>,
	Matt Mackall <mpm@...enic.com>,
	Linux-Next <linux-next@...r.kernel.org>
Subject: Re: [PATCH] slub: prefetch next freelist pointer in slab_alloc()

On Mon, Jan 30, 2012 at 22:53, Christoph Lameter <cl@...ux.com> wrote:
> On Mon, 30 Jan 2012, Geert Uytterhoeven wrote:
>> 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?

Yep. Thx!

> Subject: slub: include include for prefetch
>
> Otherwise m68k breaks.
>
> Reported-by: Geert Uytterhoeven <geert@...ux-m68k.org>
> Signed-off-by: Christoph Lameter <cl@...ux.com>

Acked-by: Geert Uytterhoeven <geert@...ux-m68k.org>

> ---
>  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>

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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