linux-kernel - Re: [PATCH 1/9] net: core: use this_cpu

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Message-ID: <0000013ab7e116c8-fac51ac3-c4a4-46b8-9d55-fb4df4019e30-000000@email.amazonses.com>
Date:	Wed, 31 Oct 2012 17:31:52 +0000
From:	Christoph Lameter <cl@...ux.com>
To:	Shan Wei <shanwei88@...il.com>
cc:	David Miller <davem@...emloft.net>, timo.teras@....fi,
	steffen.klassert@...unet.com, NetDev <netdev@...r.kernel.org>,
	Kernel-Maillist <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/9] net: core: use this_cpu_ptr per-cpu helper

On Wed, 31 Oct 2012, Shan Wei wrote:

> +++ b/net/core/flow.c
> @@ -327,11 +327,9 @@ static void flow_cache_flush_tasklet(unsigned long data)
>  static void flow_cache_flush_per_cpu(void *data)
>  {
>  	struct flow_flush_info *info = data;
> -	int cpu;
>  	struct tasklet_struct *tasklet;
>
> -	cpu = smp_processor_id();
> -	tasklet = &per_cpu_ptr(info->cache->percpu, cpu)->flush_tasklet;
> +	tasklet = &this_cpu_ptr(info->cache->percpu)->flush_tasklet;
>  	tasklet->data = (unsigned long)info;
>  	tasklet_schedule(tasklet);
>  }
>

Reviewed-by: Christoph Lameter <cl@...ux.com>

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