linux-kernel - Re: [PATCH 1/2] percpu: add percpu_variable

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 23 Jun 2010 12:07:59 +0200
From:	Tejun Heo <tj@...nel.org>
To:	Lai Jiangshan <laijs@...fujitsu.com>
CC:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...e.hu>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] percpu: add percpu_variable_ptr()

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@...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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/