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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BDC04D3B982 for ; Tue, 26 Nov 2024 11:11:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References :Date:Message-Id:From:Subject:Content-Transfer-Encoding:MIME-Version: Content-Type:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=FxwoKWgVUWd8vgrCSTcyuxyre0+1Kf9a8316J8oM978=; b=zEK+DEL637rgq2xm8JuptAesq8 tdCLQW2p8NZuQDeLyBTqnfgBY2RrI05uOu2mp/dnd3aVxIDeVSmRv9LWe8qwNQQg4vUPHUn+M4rYS X2k+QyQoUYT6hDwpsHPMd5k2QC7egvlvzE5aYXg0zbTufEumJglgVdCN8/HsdHf+UztL6y45JUQxs un5rJP/ztmDe9u04Q4qDRt9htTOJd2R4gD2tuoQ5d5vz/FxHT/9xNclJZFJkTXLFWcBvNFsHeVSfr ntTIZNINZYyz1EVNl/mqjL6kAv/p1NAiqp8ceqT0gajxVbntonbdAkA2XIkn6JKGsUg1eyNcUcP/c 841ht6UA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tFtTR-0000000ANjg-2MJX; Tue, 26 Nov 2024 11:11:17 +0000 Received: from nyc.source.kernel.org ([2604:1380:45d1:ec00::3]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tFtST-0000000ANd0-0mLq for linux-arm-kernel@lists.infradead.org; Tue, 26 Nov 2024 11:10:18 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 6353DA41BDF; Tue, 26 Nov 2024 11:08:23 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EF89EC4CECF; Tue, 26 Nov 2024 11:10:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1732619416; bh=YSELgeIz82RADEql14/t1EXb+6i2e+P7ABdlJAwN9VE=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=rQmhsDtGHgZCzvVzZBt7fn2ztuz20Lk+A/h46VRqrCaegCebr1Zbxo2NZ+Ob0zdOA UWzJpoSSu2iBALpetVFov1tDH/mgIgUgbGniciwikmzY+tueNM/DKk5WSAVk+1ACFU +tivys9qA0izpv1MFc2g/RydJfJIBBqmEiXPfLSuTFOwx75/QdQ61Qwtm/hLd1FG05 tlaekR+3TJhzBcjRxfog2LP9GafXY1R68O+XECtmeLO/5DBPxFrf3FrXuiR6h3c49B 2jUtq4QF/6SGbPAxM7hhHuEbEr8gWRfsaHL/V8zDY2EInxH6UxD1FqfWHNUI9xGfEi WXegTKljtYkAQ== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id EB00A3809A00; Tue, 26 Nov 2024 11:10:29 +0000 (UTC) Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net] net: stmmac: dwmac-socfpga: Set RX watchdog interrupt as broken From: patchwork-bot+netdevbpf@kernel.org Message-Id: <173261942880.352444.541353075631044825.git-patchwork-notify@kernel.org> Date: Tue, 26 Nov 2024 11:10:28 +0000 References: <20241122141256.764578-1-maxime.chevallier@bootlin.com> In-Reply-To: <20241122141256.764578-1-maxime.chevallier@bootlin.com> To: Maxime Chevallier Cc: alexandre.torgue@foss.st.com, joabreu@synopsys.com, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, mcoquelin.stm32@gmail.com, alexis.lothore@bootlin.com, thomas.petazzoni@bootlin.com, netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241126_031017_292604_1F2FE061 X-CRM114-Status: GOOD ( 11.15 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hello: This patch was applied to netdev/net.git (main) by Paolo Abeni : On Fri, 22 Nov 2024 15:12:55 +0100 you wrote: > On DWMAC3 and later, there's a RX Watchdog interrupt that's used for > interrupt coalescing. It's known to be buggy on some platforms, and > dwmac-socfpga appears to be one of them. Changing the interrupt > coalescing from ethtool doesn't appear to have any effect here. > > Without disabling RIWT (Received Interrupt Watchdog Timer, I > believe...), we observe latencies while receiving traffic that amount to > around ~0.4ms. This was discovered with NTP but can be easily reproduced > with a simple ping. Without this patch : > > [...] Here is the summary with links: - [net] net: stmmac: dwmac-socfpga: Set RX watchdog interrupt as broken https://git.kernel.org/netdev/net/c/407618d66dba You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html