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 10574F531C1 for ; Mon, 13 Apr 2026 18:02:44 +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:Content-Transfer-Encoding: Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Subject:Cc:To: From:Date:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=y/odhzOyY4u9jxQVl+cLzSh5Fv0Ivs0VjeFmOgiUJ4c=; b=gs07HhoT2W7cJI77413Va8rzlP Byq4m2YPPN7sGDdFjUxWKGoDtPu3+bW0KjPP5q6uF1dJD0HekhbZ4DCIRfrh4icvCFGkoS+moBPGF 8c/WH3QZ8u5p9lqWjyl3oVsYChOhZFUUnEJRTXIyj1R3bTVy+Pgr//UHzsBGPptSUUH6k/EZzzcN8 nuIUViwvsrxvMs7hLLxzrSj66rX2ss6Vt73owza0rDnRyLrvVVuwkLvVWTJrBlxp5K959aaOvX+wI SjC6BmXEttfyRdTe24o9FncnSNxRCMKyABaqWhawX/BpjU/Uz0p1+bjBLzr7S1hv7s4NT8LoDOlG+ tP0Vsz8w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wCLcO-0000000GAAZ-0Lh0; Mon, 13 Apr 2026 18:02:40 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wCLcL-0000000GAA4-0zoz for linux-arm-kernel@lists.infradead.org; Mon, 13 Apr 2026 18:02:38 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 20461440F2; Mon, 13 Apr 2026 18:02:36 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3380CC2BCAF; Mon, 13 Apr 2026 18:02:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776103356; bh=y/odhzOyY4u9jxQVl+cLzSh5Fv0Ivs0VjeFmOgiUJ4c=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=cVfocMwdyXN75O40vh2aviLbRfsNcR6ghCnkwG6CFs9QxrxJif/5SPdtBcZZAInBn TxDBIXbwbS7XQal0SyoEvp9bRshJ6baJ1ncPzczMFOhu9uise4O2TY/+QRWRR9p8Ub 4Bik94Gs8qbQyAg8ZuLzxDVPhXhynaK+VEpki3gvibw39LxAtisn1/qioS6VQa7vfZ UwJUxvzTd0yidOavhs888yS6qoKORpt3/HQ1zJmGxFRbyZuH1IeoRsdkiGbdVQi6kp I3158vi3cu86S5Wqz+e99wen4X1/900UQnVYl9utxWxYg3pe8gAHBVHg7YnSlfo3rK i9zTEiAQnQlUQ== Date: Mon, 13 Apr 2026 11:02:22 -0700 From: Jakub Kicinski To: "Russell King (Oracle)" Cc: Andrew Lunn , Alexandre Torgue , Andrew Lunn , "David S. Miller" , Eric Dumazet , linux-arm-kernel@lists.infradead.org, linux-stm32@st-md-mailman.stormreply.com, netdev@vger.kernel.org, Paolo Abeni , Sam Edwards Subject: Re: [PATCH net-next] net: stmmac: enable RPS and RBU interrupts Message-ID: <20260413110222.49fc3759@kernel.org> In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260413_110237_304286_487EE868 X-CRM114-Status: GOOD ( 10.49 ) 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 On Fri, 10 Apr 2026 14:07:51 +0100 Russell King (Oracle) wrote: > Since we are seeing receive buffer exhaustion on several platforms, > let's enable the interrupts so the statistics we publish via ethtool -S > actually work to aid diagnosis. I've been in two minds about whether > to send this patch, but given the problems with stmmac at the moment, > I think it should be merged. Sorry for a under-research response but wasn't there are person trying to fix the OOM starvation issue? Who was supposed to add a timer? Is your problem also OOM related or do you suspect something else? Firing interrupts when Rx fill ring runs dry (which IIUC this patches dies?) is not a good idea.