From patchwork Thu May 14 07:59:35 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 1289980 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=bgdev.pl Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.a=rsa-sha256 header.s=20150623 header.b=IQRdwUqx; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 49N3rq6lDCz9sV9 for ; Thu, 14 May 2020 18:01:15 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727811AbgENIBM (ORCPT ); Thu, 14 May 2020 04:01:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59238 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726278AbgENIAR (ORCPT ); Thu, 14 May 2020 04:00:17 -0400 Received: from mail-wm1-x341.google.com (mail-wm1-x341.google.com [IPv6:2a00:1450:4864:20::341]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 50B7FC061A0F for ; Thu, 14 May 2020 01:00:17 -0700 (PDT) Received: by mail-wm1-x341.google.com with SMTP id f13so757638wmc.5 for ; Thu, 14 May 2020 01:00:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=85LArQ1FkfasqQwvTGBUsmFOdZ74xT3FAzPREvSXT3E=; b=IQRdwUqxDe1qZmT8TGQLkrpl0kAdWhdhH11prXOwPTmEcd2xi6nmcFvKSdcBT3IQZY yRnKMO5FeNSeCf+SCHtG/N/4bKqB7p81H8ghcz05gj2Pwf2vXgntZAeQYV3l/jTSdocQ dPvmZEAfuzM8MzlXRUqGd/E7rGt2F1n4TM7+DJ6RnqP3U6YcLUe8aja3Yta4IW17s6Yy 75hKtwdXvy9YC8snlGNetXjHz8nQEW6rafZF9NDCUU81TSHgCWq6rR7UDqYLVqUB6G9Z NxP5Y6Yp69XPoqS88noAVJoG/kGfFrZT6SAC3hTLsFU30y07APR+K/lBdiKhePIkHvpT 9Kfg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=85LArQ1FkfasqQwvTGBUsmFOdZ74xT3FAzPREvSXT3E=; b=UhNi89+WN7J9IT9Fhejs6j0g+qO/HL7ZIieISh5yCWdWtpbM4Gxvl6qAg5wRJG28cP srJyWSySojt2cBeZzJ/JnqlmMuIJPWGSp7w37IU4FaT7CXmrNJQt277n5cqCJUt3mtt9 VntkYSGAB1OpNLKUCRCbYuETZcstFYYq8t7TCUm2MnOrZOR/tFCP5cCA1PN2mVWI3jrq 7kXMddgl9UnQT5yXK6g3VvoCGLPD17TiUEai8Yvzaw+DgYmNJgHivq+dmg7ZUD1mEVxd WV3J+/UbMqZua/T61FmaqTqBZEIXIOzYhYBnoFbRD4MWKd1Sl2n78s9y9aH1de7+UKvl gRIg== X-Gm-Message-State: AGi0PuZBpwdSzOeyUtBnTWNbRJ8QdHcNm1mZQOJGE7hhCXRgXrhj93Co zeLYZ4/bRJt/81IJKAgnp53NUQ== X-Google-Smtp-Source: APiQypIY9tAfCpn2AmTAwgro/2JmYcI8xIK57P9eBIyeDsZ7PCcAdgUe8VkM1x3xFdmKrxvg6IG6Gg== X-Received: by 2002:a7b:c5d4:: with SMTP id n20mr49059541wmk.92.1589443216067; Thu, 14 May 2020 01:00:16 -0700 (PDT) Received: from localhost.localdomain (lfbn-nic-1-65-232.w2-15.abo.wanadoo.fr. [2.15.156.232]) by smtp.gmail.com with ESMTPSA id 81sm23337446wme.16.2020.05.14.01.00.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 14 May 2020 01:00:15 -0700 (PDT) From: Bartosz Golaszewski To: Jonathan Corbet , Rob Herring , "David S . Miller" , Matthias Brugger , John Crispin , Sean Wang , Mark Lee , Jakub Kicinski , Arnd Bergmann , Fabien Parent , Heiner Kallweit , Edwin Peer Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Stephane Le Provost , Pedro Tsai , Andrew Perepech , Bartosz Golaszewski Subject: [PATCH v3 08/15] net: devres: define a separate devres structure for devm_alloc_etherdev() Date: Thu, 14 May 2020 09:59:35 +0200 Message-Id: <20200514075942.10136-9-brgl@bgdev.pl> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200514075942.10136-1-brgl@bgdev.pl> References: <20200514075942.10136-1-brgl@bgdev.pl> MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Bartosz Golaszewski Not using a proxy structure to store struct net_device doesn't save anything in terms of compiled code size or memory usage but significantly decreases the readability of the code with all the pointer casting. Define struct net_device_devres and use it in devm_alloc_etherdev_mqs(). Signed-off-by: Bartosz Golaszewski --- net/devres.c | 20 ++++++++++++-------- 1 file changed, 12 insertions(+), 8 deletions(-) diff --git a/net/devres.c b/net/devres.c index c1465d9f9019..b97b0c5a8216 100644 --- a/net/devres.c +++ b/net/devres.c @@ -7,30 +7,34 @@ #include #include -static void devm_free_netdev(struct device *dev, void *res) +struct net_device_devres { + struct net_device *ndev; +}; + +static void devm_free_netdev(struct device *dev, void *this) { - free_netdev(*(struct net_device **)res); + struct net_device_devres *res = this; + + free_netdev(res->ndev); } struct net_device *devm_alloc_etherdev_mqs(struct device *dev, int sizeof_priv, unsigned int txqs, unsigned int rxqs) { - struct net_device **dr; - struct net_device *netdev; + struct net_device_devres *dr; dr = devres_alloc(devm_free_netdev, sizeof(*dr), GFP_KERNEL); if (!dr) return NULL; - netdev = alloc_etherdev_mqs(sizeof_priv, txqs, rxqs); - if (!netdev) { + dr->ndev = alloc_etherdev_mqs(sizeof_priv, txqs, rxqs); + if (!dr->ndev) { devres_free(dr); return NULL; } - *dr = netdev; devres_add(dev, dr); - return netdev; + return dr->ndev; } EXPORT_SYMBOL(devm_alloc_etherdev_mqs);