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 X-Spam-Level: X-Spam-Status: No, score=-5.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 74273C433DF for ; Wed, 12 Aug 2020 03:22:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4EC9420675 for ; Wed, 12 Aug 2020 03:22:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="DD1ALcRp" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726501AbgHLDWO (ORCPT ); Tue, 11 Aug 2020 23:22:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57008 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726333AbgHLDWO (ORCPT ); Tue, 11 Aug 2020 23:22:14 -0400 Received: from mail-oi1-x241.google.com (mail-oi1-x241.google.com [IPv6:2607:f8b0:4864:20::241]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0ABDEC06174A for ; Tue, 11 Aug 2020 20:22:13 -0700 (PDT) Received: by mail-oi1-x241.google.com with SMTP id j7so583839oij.9 for ; Tue, 11 Aug 2020 20:22:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=dY3KSE5aZaMnE4vkYvmn08NB3GzwbxaxyIEm6xdaovU=; b=DD1ALcRpB7nAWLxdflHJFRcy/tCW06lTpDp9kSI8RZR6n/wEeawBMPAEhUsZEh0YVw zvnPIG8IxaB+aWxzyDevkNRFle0ll8GGJLNmML8oimBj4sz9KpDJHAy5p7qcF4EcmqCL 0lWLc9eiqZi2ixFDfbfnSf1A0z+KKAnTSjUSWn0tT35liAydHnfrcy6yaULFmf5bOdz0 cnQo+3ChMnXJVxBYjLpic8EpPpHbfkV1uvA6Knb6pgnDISNziPXuIvjC/RSn0wTCniLu oqauo59mL6zm65ceUuSNBk/3rGq5/pVGUoGalJZ9BCiYKaP6x52Ll2Tn69eIQkjh7tF7 T5VA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=dY3KSE5aZaMnE4vkYvmn08NB3GzwbxaxyIEm6xdaovU=; b=T9Q0/NBBUmUnLiXJuaIrQbHsr5WgIqqgg8crSwF+YVCSXrfw9rk0kgXNvdmQDuFAnm PUjAh33/GS+coSXBLAIBvHR5IrWh48qH2qz2yfV5FRbX4Bh1yA0fx5sGn87f9rjkcX0Y Zl9MiOTWRNLwyjeosZrX3WBiY9GXs4wc/E1lmOjICS708LBlSWSK5pFUatBq/2+OQJgl lIBOR5IZgrw+v/O3WN9cA1B3c61OWoMK2sOsey0/5lkdBxCYkcaH8Iu10TdqINlwEkWw SvnLcP0aYVW0gLdP7bLMgO0TjR5Tq79+iJVKf79CgyS7cMTMZ0LU5MUa+ulUWhwBdeKW SHvA== X-Gm-Message-State: AOAM530zA+D14RTPRbyXAyUcc4UfL5IWa6uufHmbCK4WBOuUNXf5ijWT v6BtGE3rJ4G8as+TgxtSzyo= X-Google-Smtp-Source: ABdhPJyaexlJ6uvadohqDeG6FPlHqCH1x56oAvuKsRHCsqtH/CPfJfkfMnsFyYZmHazJCWfDKDtpRw== X-Received: by 2002:a05:6808:8ef:: with SMTP id d15mr6007722oic.134.1597202533218; Tue, 11 Aug 2020 20:22:13 -0700 (PDT) Received: from Davids-MacBook-Pro.local ([2601:282:803:7700:c1d8:5dca:975d:16e]) by smtp.googlemail.com with ESMTPSA id h21sm219481oib.51.2020.08.11.20.22.12 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 11 Aug 2020 20:22:12 -0700 (PDT) Subject: Re: [PATCH net] net: accept an empty mask in /sys/class/net/*/queues/rx-*/rps_cpus To: =?UTF-8?Q?Maciej_=c5=bbenczykowski?= Cc: Eric Dumazet , "David S . Miller" , netdev , Eric Dumazet , Alex Belits , Nitesh Narayan Lal , Peter Zijlstra References: <20200812013440.851707-1-edumazet@google.com> <5b61d241-fedb-f694-c0a1-e46b0dedab66@gmail.com> From: David Ahern Message-ID: Date: Tue, 11 Aug 2020 21:22:08 -0600 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On 8/11/20 9:19 PM, Maciej Żenczykowski wrote: > Before breakage, post fix: > > sfp6:~# echo 0 > /sys/class/net/lo/queues/rx-0/rps_cpus > > With breakage: > lpk17:~# echo 0 > /sys/class/net/lo/queues/rx-0/rps_cpus > -bash: echo: write error: Invalid argument > ah, so this is recent breakage with 5.9. I had not hit before hence the question. thanks for clarifying.