From patchwork Sun Jan 13 23:41:06 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Antonio Quartulli X-Patchwork-Id: 211671 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 275EF2C0108 for ; Mon, 14 Jan 2013 10:42:34 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755532Ab3AMXm1 (ORCPT ); Sun, 13 Jan 2013 18:42:27 -0500 Received: from diserzione.investici.org ([82.221.99.153]:49340 "EHLO diserzione.investici.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755309Ab3AMXm0 (ORCPT ); Sun, 13 Jan 2013 18:42:26 -0500 Received: from [82.221.99.153] (diserzione [82.221.99.153]) (Authenticated sender: ordex@autistici.org) by localhost (Postfix) with ESMTPSA id A09AA180DB8; Sun, 13 Jan 2013 23:42:20 +0000 (UTC) X-DKIM: Sendmail DKIM Filter v2.8.2 diserzione.investici.org A09AA180DB8 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=autistici.org; s=stigmate; t=1358120545; bh=Hi+AxUSpc2pDdL5DDFiMsL9ngL+xednwE/+cA8LwnnU=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=dhEWp5pps6ZwTpwjdu7J3VnEoZHG+eFP65pOSV34BLn7QYgKD1DoEf4dPyxFsxgZ8 JXIrflcqoTutjuVz29yHHcxk8Z6rn6zAQtdZfqw3SiXX5A1TRR2c8hpiS5TYHMTTIM TxcF2xRHQybPPkHUsFAyNz2EdIRKq5kuI65g70/I= From: Antonio Quartulli To: davem@davemloft.net Cc: netdev@vger.kernel.org, b.a.t.m.a.n@lists.open-mesh.org, Shan Wei , Sven Eckelmann , Marek Lindner , Antonio Quartulli Subject: [PATCH 01/15] batman-adv: use per_cpu_add helper Date: Mon, 14 Jan 2013 09:41:06 +1000 Message-Id: <1358120480-25960-2-git-send-email-ordex@autistici.org> X-Mailer: git-send-email 1.8.0.2 In-Reply-To: <1358120480-25960-1-git-send-email-ordex@autistici.org> References: <1358120480-25960-1-git-send-email-ordex@autistici.org> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org 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 Signed-off-by: Sven Eckelmann Signed-off-by: Marek Lindner Signed-off-by: Antonio Quartulli --- net/batman-adv/main.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h index 2f85577..c4fe41f 100644 --- a/net/batman-adv/main.h +++ b/net/batman-adv/main.h @@ -276,9 +276,7 @@ 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)