From: Tejun Heo <tj@kernel.org>
To: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Ingo Molnar <mingo@elte.hu>, LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/2] percpu: add percpu_variable_ptr()
Date: Wed, 23 Jun 2010 12:07:59 +0200 [thread overview]
Message-ID: <4C21DCFF.5050604@kernel.org> (raw)
In-Reply-To: <4C21DC33.6070404@cn.fujitsu.com>
On 06/23/2010 12:04 PM, Lai Jiangshan wrote:
> The percpu variable and allocated percpu data are compatible
> witch each other, This patch adds a API, thus we can use
> per_cpu_ptr() for defined/declared percpu variable.
>
> Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
> ---
> diff --git a/include/linux/percpu-defs.h b/include/linux/percpu-defs.h
> index ce2dc65..d5c8d7f 100644
> --- a/include/linux/percpu-defs.h
> +++ b/include/linux/percpu-defs.h
> @@ -81,6 +81,12 @@
> #endif
>
> /*
> + * Ptr of the declared/defined per-CPU variable.
> + * It is totally compatible with the return from alloc_percpu().
> + */
> +#define percpu_variable_ptr(name) (&(name))
Why not just use &name?
Thanks.
--
tejun
next prev parent reply other threads:[~2010-06-23 10:08 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-23 10:04 [PATCH 1/2] percpu: add percpu_variable_ptr() Lai Jiangshan
2010-06-23 10:07 ` Tejun Heo [this message]
2010-06-23 10:20 ` Lai Jiangshan
2010-06-23 10:22 ` Tejun Heo
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