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 A1007C05052 for ; Wed, 16 Aug 2023 15:23:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344099AbjHPPWr (ORCPT ); Wed, 16 Aug 2023 11:22:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50552 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344109AbjHPPW0 (ORCPT ); Wed, 16 Aug 2023 11:22:26 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BB2D01BF8; Wed, 16 Aug 2023 08:22:20 -0700 (PDT) Date: Wed, 16 Aug 2023 17:22:16 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1692199338; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=X7IUEQHzihCH8EQTTWoAYq9Za5pGutJky5EpXbKbfMU=; b=hRaGhTAqOqQipkzJSecPXLeVPOVhZMn4h3tA6BogOquSru5AXq2M/eBDB2TpZejeIPKoMR nvfPEZqJp6o/cQGoLCmJ+uYHWS+hMS4gMs2NoZ+pATGoxho+S9KRJHxfUJNNik6HEmzGwq 3ZbUyYEbMdSaSoKTSOJQ+ALwR802pYXFu5mDdcxore7FSI+HsYz2EKZfvDzdoFbagItnwA vWi/FAWQFWE6EILqyY5mMK9WOM3ewcwWL3ax8Ol3L7DgYFrY7gZ5TDwYwuC2PicOjuKm4V h8hylgWKXpUImrDkeilSfuHyF7XyCyNPkW3mx6QQMGfCjuYYSN/SWXOyqo3r5w== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1692199338; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=X7IUEQHzihCH8EQTTWoAYq9Za5pGutJky5EpXbKbfMU=; b=5UAJOfScB/u8xi02CM776lXg6xRl/nTPYpsAF9Ppg/arFnKOqazgFXW8zEOuBtoF8AgPHI zwqiTQO83nBSgaBg== From: Sebastian Andrzej Siewior To: Jesper Dangaard Brouer Cc: netdev@vger.kernel.org, Paolo Abeni , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Peter Zijlstra , Thomas Gleixner , Wander Lairson Costa , linux-kernel@vger.kernel.org, kernel-team , Yan Zhai Subject: Re: [RFC PATCH 2/2] softirq: Drop the warning from do_softirq_post_smp_call_flush(). Message-ID: <20230816152216.Gc_KwqZq@linutronix.de> References: <20230814093528.117342-1-bigeasy@linutronix.de> <20230814093528.117342-3-bigeasy@linutronix.de> <25de7655-6084-e6b9-1af6-c47b3d3b7dc1@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2023-08-16 16:48:56 [+0200], Jesper Dangaard Brouer wrote: > I'm no expert in sched / softirq area of the kernel, but I'm willing to help > out testing different solution that can regain the "overload" protection > e.g. avoid packet processing "falls-of-an-edge" (and thus opens the kernel > to be DDoS'ed easily). > Is this what Sebastian's patchset does? I was going to respond but didn't know what so far. Can you figure out if you are using backlog or not. If you do, could try my patch. If not could you try to enable napi-thread and see? Either way I will re-read it again. Sebastian