From patchwork Thu Oct 29 17:31:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heiner Kallweit X-Patchwork-Id: 11867067 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.1 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7A503C2D0A3 for ; Thu, 29 Oct 2020 17:35:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 150BD2076D for ; Thu, 29 Oct 2020 17:35:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="bbNGMMD8" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726973AbgJ2RfK (ORCPT ); Thu, 29 Oct 2020 13:35:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37990 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725777AbgJ2RfJ (ORCPT ); Thu, 29 Oct 2020 13:35:09 -0400 Received: from mail-wr1-x441.google.com (mail-wr1-x441.google.com [IPv6:2a00:1450:4864:20::441]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CBFACC0613D5 for ; Thu, 29 Oct 2020 10:35:08 -0700 (PDT) Received: by mail-wr1-x441.google.com with SMTP id y12so3689626wrp.6 for ; Thu, 29 Oct 2020 10:35:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:from:to:cc:references:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=oRmz+4+o7OE+5WNthkg3Flvqqv0uTmDftIeGOPIUHTA=; b=bbNGMMD8IpyjBA1HDwRhmK+2pfDLh9HTObzKHHQBRt9dCnzIkU33nxQ/59bgtZnBt4 y6FPM8vWCvTz+6opgY70QLFL8ZI0WXtLmGQ6iu+yIvkK67AWNVlc4WGmQrgBWuW77dI6 rn0ML/LLg+LKSp69pRntJS6DUkQUgfBnCjMkgz0Z4C/F4vOpEl11paNWLuRXS1qJ5k3/ u0MrUi3C+AT/7GsF5VB/nWIdehOfhhM2xGAdJMxpARL68zOuoyJ+a+toCGrs5LK5vWi6 TqjP71Ip/hbcVketObZ090zpzItadVKc+KpdmRW4bKCvG3Rct8HHE+4hxXGFNVo2KcEk t7OQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:from:to:cc:references:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=oRmz+4+o7OE+5WNthkg3Flvqqv0uTmDftIeGOPIUHTA=; b=hNlgy1IfzToWl5MlKgFZrIO7D5lTVwFCnt40/qZJ9Kk4miEYagYjBOAUJv9ef1ZrsS rQbzyp65WLgejFNJOdsF9lpWUuRjTRA6AM94STXSBwJwmiMA+9Bfo9WaL7lORAIBLMFy UXMm4HzcA5fuaJu2ERAwKrsiGw3e1ogsRk13U4bEMsy+I1OxM1yvic67EDyPk4YQEate W8XjD+9dVldAfTI2yWCuplss+bf/mp5HYkYQIIFbZAt82Lx2jZrvQadKz/LpE7LMaV7S M5ob+llnKW4NV2mU7t1xkEkcEmWeGaB7FMe3AhpXy/I5fcw6wRTJVzUGdJCi8pXy2Qiw ItPQ== X-Gm-Message-State: AOAM531CYOUfkSasr0ylL6AGOsXWwtdrUQZH+hT5F7k6YQxfYlPdcTdq CG8JCbsaI+SNRk2UNTnZ/c2djDCf59M= X-Google-Smtp-Source: ABdhPJzSYzD05M+cQ/w+z2GvYhAR1lB9uX8WRX+qIyJymL5TKifTPejlXyFLnQ6groUnjHI53XDmHw== X-Received: by 2002:adf:f381:: with SMTP id m1mr7645418wro.347.1603992907302; Thu, 29 Oct 2020 10:35:07 -0700 (PDT) Received: from ?IPv6:2003:ea:8f23:2800:a990:f24b:87e1:a560? (p200300ea8f232800a990f24b87e1a560.dip0.t-ipconnect.de. [2003:ea:8f23:2800:a990:f24b:87e1:a560]) by smtp.googlemail.com with ESMTPSA id t19sm964793wmi.26.2020.10.29.10.35.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 29 Oct 2020 10:35:06 -0700 (PDT) Subject: [PATCH net-next 2/4] net: core: add devm_netdev_alloc_pcpu_stats From: Heiner Kallweit To: David Miller , Jakub Kicinski , Realtek linux nic maintainers Cc: "netdev@vger.kernel.org" References: <1fdb8ecd-be0a-755d-1d92-c62ed8399e77@gmail.com> Message-ID: <78eb7e22-902c-0227-3bbf-d324eb232ade@gmail.com> Date: Thu, 29 Oct 2020 18:31:21 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.4.0 MIME-Version: 1.0 In-Reply-To: <1fdb8ecd-be0a-755d-1d92-c62ed8399e77@gmail.com> Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org We have netdev_alloc_pcpu_stats(), and we have devm_alloc_percpu(). Add a managed version of netdev_alloc_pcpu_stats, e.g. for allocating the per-cpu stats in the probe() callback of a driver. It needs to be a macro for dealing properly with the type argument. Signed-off-by: Heiner Kallweit --- include/linux/netdevice.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 568fab708..6e06fef32 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2596,6 +2596,20 @@ static inline void dev_lstats_add(struct net_device *dev, unsigned int len) #define netdev_alloc_pcpu_stats(type) \ __netdev_alloc_pcpu_stats(type, GFP_KERNEL) +#define devm_netdev_alloc_pcpu_stats(dev, type) \ +({ \ + typeof(type) __percpu *pcpu_stats = devm_alloc_percpu(dev, type);\ + if (pcpu_stats) { \ + int __cpu; \ + for_each_possible_cpu(__cpu) { \ + typeof(type) *stat; \ + stat = per_cpu_ptr(pcpu_stats, __cpu); \ + u64_stats_init(&stat->syncp); \ + } \ + } \ + pcpu_stats; \ +}) + enum netdev_lag_tx_type { NETDEV_LAG_TX_TYPE_UNKNOWN, NETDEV_LAG_TX_TYPE_RANDOM,