linux-kernel - Re: [PATCH] generic-ipi: Fix misleading smp_call_function

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Message-ID: <52117916.80107@huawei.com>
Date:	Mon, 19 Aug 2013 09:47:02 +0800
From:	Xie XiuQi <xiexiuqi@...wei.com>
To:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:	Sheng Yang <sheng@...ux.intel.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Jens Axboe <jens.axboe@...cle.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH] generic-ipi: Fix misleading smp_call_function_any() description

Cc: Ingo Molnar <mingo@...e.hu>

On 2013/7/29 11:52, Xie XiuQi wrote:
> After commit:8969a5ede0f9e17da4b943712429aef2c9bcd82b
> "generic-ipi: remove kmalloc()", wait = 0 can be guaranteed.
> 
> Signed-off-by: Xie XiuQi <xiexiuqi@...wei.com>
> Cc: Sheng Yang <sheng@...ux.intel.com>
> Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> Cc: Jens Axboe <jens.axboe@...cle.com>
> Cc: Rusty Russell <rusty@...tcorp.com.au>
> ---
>  kernel/smp.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/kernel/smp.c b/kernel/smp.c
> index fe9f773..b1c9034 100644
> --- a/kernel/smp.c
> +++ b/kernel/smp.c
> @@ -278,8 +278,6 @@ EXPORT_SYMBOL(smp_call_function_single);
>   * @wait: If true, wait until function has completed.
>   *
>   * Returns 0 on success, else a negative status code (if no cpus were online).
> - * Note that @wait will be implicitly turned on in case of allocation failures,
> - * since we fall back to on-stack allocation.
>   *
>   * Selection preference:
>   *	1) current cpu if in @mask
> 


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