linux-kernel - Re: [RFC][PATCH 1/2] percpu array counter like vmstat

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Message-Id: <20091001083133.429f373b.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Thu, 1 Oct 2009 08:31:33 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"balbir@...ux.vnet.ibm.com" <balbir@...ux.vnet.ibm.com>,
	"nishimura@....nes.nec.co.jp" <nishimura@....nes.nec.co.jp>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [RFC][PATCH 1/2] percpu array counter like vmstat

On Wed, 30 Sep 2009 19:09:43 +0900
KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> wrote:

> +int array_counter_init(struct array_counter *ac, int size)
> +{
> +	ac->v.elements = size;
> +	ac->v.counters = alloc_percpu(s8);
This is a bug, of course...
should be
ac->v.counters = __alloc_percpu(size, __alignof__(char));

Regads,
-Kame

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