From patchwork Fri Nov 9 02:22:15 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [v3,9/9] net: batman-adv: use per_cpu_add helper From: Shan Wei X-Patchwork-Id: 197916 Message-Id: <509C68D7.8040603@gmail.com> To: lindner_marek@yahoo.de, siwu@hrz.tu-chemnitz.de, ordex@autistici.org, b.a.t.m.a.n@lists.open-mesh.org, David Miller , NetDev , Kernel-Maillist , Shan Wei , Christoph Lameter Date: Fri, 09 Nov 2012 10:22:15 +0800 From: Shan Wei this_cpu_add is an atomic operation. and be more faster than per_cpu_ptr operation. Signed-off-by: Shan Wei Reviewed-by: Christoph Lameter --- v3: change commit message. --- net/batman-adv/main.h | 4 +--- 1 files changed, 1 insertions(+), 3 deletions(-) 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); } #define batadv_inc_counter(b, i) batadv_add_counter(b, i, 1)