From patchwork Fri Nov 2 16:02:06 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: solomon X-Patchwork-Id: 196585 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id EC9042C00C4 for ; Sat, 3 Nov 2012 03:02:41 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759483Ab2KBQCV (ORCPT ); Fri, 2 Nov 2012 12:02:21 -0400 Received: from mail-pa0-f46.google.com ([209.85.220.46]:58766 "EHLO mail-pa0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759382Ab2KBQCR (ORCPT ); Fri, 2 Nov 2012 12:02:17 -0400 Received: by mail-pa0-f46.google.com with SMTP id hz1so2547906pad.19 for ; Fri, 02 Nov 2012 09:02:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:subject :content-type:content-transfer-encoding; bh=+u2IuqCWdtzzuboF/GOf96ENmJFp3kikxC9R5Ud58q4=; b=z1qUs5bpC3/pka7UIVtB3D/stOpxq66IsI+mDAnWFbs9S3KJywJXw5OPx2RpvgRoMY vupxCaDYRpJcOcBBkcNAILodl5TThzGRXp6xPhwOpkiKQ8/3R17IGP0IV9S78C0F0qfu 5zhL9TQXh8ipZ3tbA8luLs2US7S2UoyrVxRxG3lmlxX91Kb3yg0WnG5jVyDt0h14YS6C gOo20sMwLuLk9u81JNQJQbnN7wsKHy+ct5Ya/rvszmlq7T2038kevI++/DWuzo9HPOmH fI8prFQzbnTHMA+CehVKJzB0tOaX1zYNYWVu8upBKF+3jKNer1QB9HjJeJhEpqQnzus8 IHWA== Received: by 10.68.189.5 with SMTP id ge5mr7649428pbc.1.1351872137068; Fri, 02 Nov 2012 09:02:17 -0700 (PDT) Received: from [172.30.10.98] ([121.14.96.125]) by mx.google.com with ESMTPS id o7sm5924324pay.14.2012.11.02.09.02.09 (version=SSLv3 cipher=OTHER); Fri, 02 Nov 2012 09:02:16 -0700 (PDT) Message-ID: <5093EE7E.6040400@gmail.com> Date: Sat, 03 Nov 2012 00:02:06 +0800 From: Shan Wei User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:16.0) Gecko/20121026 Thunderbird/16.0.2 MIME-Version: 1.0 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 Subject: [PATCH v2 9/9] net: batman-adv: use per_cpu_add helper Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Shan Wei As Christoph Lameter said: > In addition, following usage of per_cpu_ptr can be replaced by this_cpu_read. > > cpu=get_cpu() > .... > *per_cpu_ptr(p,cpu) > .... > .... > put_cpu() Right. Signed-off-by: Shan Wei Reviewed-by: Christoph Lameter --- 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)