linux-kernel - Re: [PATCH v2] mempolicy: reduce references to the current

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Message-ID: <BANLkTik_ztG7JsuskO=umc1A0466P7HvKg@mail.gmail.com>
Date:	Fri, 15 Apr 2011 15:23:48 +0900
From:	Minchan Kim <minchan.kim@...il.com>
To:	Namhyung Kim <namhyung@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] mempolicy: reduce references to the current

On Fri, Apr 15, 2011 at 3:08 PM, Namhyung Kim <namhyung@...il.com> wrote:
> Remove duplicated reference to the 'current' task using a local
> variable. Since refering the current can be a burden, it'd better
> cache the reference, IMHO. At least this saves some bytes on x86_64.
>
>  $ size mempolicy-{old,new}.o
>     text    data    bss     dec     hex filename
>    25203    2448   9176   36827    8fdb mempolicy-old.o
>    25136    2448   9184   36768    8fa0 mempolicy-new.o
>
> Signed-off-by: Namhyung Kim <namhyung@...il.com>
Reviewed-by: Minchan Kim <minchan.kim@...il.com>

-- 
Kind regards,
Minchan Kim
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