From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 13399C61DB3 for ; Mon, 9 Jan 2023 07:30:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236443AbjAIHai (ORCPT ); Mon, 9 Jan 2023 02:30:38 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42038 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233151AbjAIHaV (ORCPT ); Mon, 9 Jan 2023 02:30:21 -0500 Received: from sin.source.kernel.org (sin.source.kernel.org [145.40.73.55]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1908C1275A; Sun, 8 Jan 2023 23:30:20 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sin.source.kernel.org (Postfix) with ESMTPS id DA941CE0EA2; Mon, 9 Jan 2023 07:30:18 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id 15AE3C433D2; Mon, 9 Jan 2023 07:30:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1673249417; bh=ZCUEoA+q5Y84FmkEwkCc0/nI1EnWj90AeV4mz06wEPw=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=EJtDcDS834gb+MQJViYN6J1w5bmWGQXT4EzMDPi+kZRL243D+uMqGGg61S6jAi/qf py4bF3OXFNnZxJhK6ImjDlQimeNmlKpunkmuLLBssfXx1V344Km2iyhHdICnDBg/YS 501ZTs6m6bToAje3zcKCloVHkBc8Lni+Pq2rnlGMGCOUFBMKcaUP+a+/ptxQuffmGH S9NvaECoi+YimZmcKjsk9jXW+1EV64C17m9E5T78XRoW6dnZiAPZc4ZeeV1W/nVEUe qAlhjeBHdpmbVZUruM6jbheUmvP58uyRB3myG+svWpeN7u/TyNS5DPYPCFPHPCAmQ6 y6kBnwZMLTRUA== Received: from aws-us-west-2-korg-oddjob-1.ci.codeaurora.org (localhost.localdomain [127.0.0.1]) by aws-us-west-2-korg-oddjob-1.ci.codeaurora.org (Postfix) with ESMTP id 02FE7E4D005; Mon, 9 Jan 2023 07:30:17 +0000 (UTC) Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net-next v4] usbnet: optimize usbnet_bh() to reduce CPU load From: patchwork-bot+netdevbpf@kernel.org Message-Id: <167324941700.24554.6732820998527805542.git-patchwork-notify@kernel.org> Date: Mon, 09 Jan 2023 07:30:17 +0000 References: <20230106104950.22741-1-lsahn@ooseel.net> In-Reply-To: <20230106104950.22741-1-lsahn@ooseel.net> To: Leesoo Ahn Cc: oneukum@suse.com, davem@davemloft.net, kuba@kernel.org, netdev@vger.kernel.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello: This patch was applied to netdev/net-next.git (master) by David S. Miller : On Fri, 6 Jan 2023 19:49:49 +0900 you wrote: > The current source pushes skb into dev-done queue by calling > skb_dequeue_tail() and then pop it by skb_dequeue() to branch to > rx_cleanup state for freeing urb/skb in usbnet_bh(). It takes extra CPU > load, 2.21% (skb_queue_tail) as follows, > > - 11.58% 0.26% swapper [k] usbnet_bh > - 11.32% usbnet_bh > - 6.43% skb_dequeue > 6.34% _raw_spin_unlock_irqrestore > - 2.21% skb_queue_tail > 2.19% _raw_spin_unlock_irqrestore > - 1.68% consume_skb > - 0.97% kfree_skbmem > 0.80% kmem_cache_free > 0.53% skb_release_data > > [...] Here is the summary with links: - [net-next,v4] usbnet: optimize usbnet_bh() to reduce CPU load https://git.kernel.org/netdev/net-next/c/fb59bf28cd63 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html