netdev - Re: [PATCH v2 9/9] net: batman-adv: use per_cpu

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Date:	Fri, 2 Nov 2012 17:48:04 +0000
From:	Christoph Lameter <cl@...ux.com>
To:	Shan Wei <shanwei88@...il.com>
cc:	lindner_marek@...oo.de, siwu@....tu-chemnitz.de,
	ordex@...istici.org, b.a.t.m.a.n@...ts.open-mesh.org,
	David Miller <davem@...emloft.net>,
	NetDev <netdev@...r.kernel.org>,
	Kernel-Maillist <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 9/9] net: batman-adv: use per_cpu_add helper

On Sat, 3 Nov 2012, Shan Wei wrote:

> diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
> index 897ba6a..3aef5b2 100644
> --- a/net/batman-adv/main.h
> +++ b/net/batman-adv/main.h
> @@ -263,9 +263,7 @@ static inline bool batadv_has_timed_out(unsigned long timestamp,
>  static inline void batadv_add_counter(struct batadv_priv *bat_priv, size_t idx,
>  				      size_t count)
>  {
> -	int cpu = get_cpu();
> -	per_cpu_ptr(bat_priv->bat_counters, cpu)[idx] += count;
> -	put_cpu();
> +	this_cpu_add(bat_priv->bat_counters[idx], count);
>  }

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

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