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 15A79C6FD18 for ; Wed, 29 Mar 2023 02:30:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229795AbjC2CaZ (ORCPT ); Tue, 28 Mar 2023 22:30:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40858 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229451AbjC2CaX (ORCPT ); Tue, 28 Mar 2023 22:30:23 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0F76510F0; Tue, 28 Mar 2023 19:30:22 -0700 (PDT) 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 ams.source.kernel.org (Postfix) with ESMTPS id B61C0B81FAC; Wed, 29 Mar 2023 02:30:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id 530B7C433D2; Wed, 29 Mar 2023 02:30:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1680057019; bh=QoF+PKmwmMTcX0Hg3+TzEjooPuR5Z8gFjdGStkE1TD8=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=ILxWoaGoZN8at13CnPBRljcwoALfih+GvV5eSD5kYQv1BArqXXDGL82kP+pP2iVek EmYMnYTAgsoPlnKPEbY00Ymh88B/AMx4P/h6q2Al+14BjmWB0+V8t+EK6b7Lq9uYGj wxT85V9dMVDJUls2BgkT/05uSdIP1ONks1PcwTFqd0O5RYp+uh/EagGEjY3IykK0mm RDrS/Dj1HzKKYtXTJt1TQZdFM0YUbagvbjrafL5Hfj/XIXGbV++kPAkPKKNQ7847ap 5K59NjAM7rZzBU8xpJxZU1JyOQggt67EVNFrLTE9v/0vPblCjd91Pwe5LGiwY0w/y1 87DqwOK6aQosg== 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 25BD2E50D74; Wed, 29 Mar 2023 02:30:19 +0000 (UTC) Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [patch V3 0/4] net, refcount: Address dst_entry reference count scalability issues From: patchwork-bot+netdevbpf@kernel.org Message-Id: <168005701914.27658.17147408850533748612.git-patchwork-notify@kernel.org> Date: Wed, 29 Mar 2023 02:30:19 +0000 References: <20230323102649.764958589@linutronix.de> In-Reply-To: <20230323102649.764958589@linutronix.de> To: Thomas Gleixner Cc: linux-kernel@vger.kernel.org, torvalds@linuxfoundation.org, x86@kernel.org, wangyang.guo@intel.com, arjan@linux.intel.com, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, netdev@vger.kernel.org, will@kernel.org, peterz@infradead.org, boqun.feng@gmail.com, mark.rutland@arm.com, maz@kernel.org, qiuxu.zhuo@intel.com Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello: This series was applied to netdev/net-next.git (main) by Jakub Kicinski : On Thu, 23 Mar 2023 21:55:27 +0100 (CET) you wrote: > Hi! > > This is version 3 of this series. Version 2 can be found here: > > https://lore.kernel.org/lkml/20230307125358.772287565@linutronix.de > > Wangyang and Arjan reported a bottleneck in the networking code related to > struct dst_entry::__refcnt. Performance tanks massively when concurrency on > a dst_entry increases. > > [...] Here is the summary with links: - [V3,1/4,V2,1/4] net: dst: Prevent false sharing vs. dst_entry:: __refcnt https://git.kernel.org/netdev/net-next/c/d288a162dd1c - [V3,2/4] atomics: Provide atomic_add_negative() variants https://git.kernel.org/netdev/net-next/c/e5ab9eff46b0 - [V3,3/4] atomics: Provide rcuref - scalable reference counting https://git.kernel.org/netdev/net-next/c/ee1ee6db0779 - [V3,4/4] net: dst: Switch to rcuref_t reference counting https://git.kernel.org/netdev/net-next/c/bc9d3a9f2afc You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html