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=-3.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 F225BC433B4 for ; Wed, 14 Apr 2021 16:33:08 +0000 (UTC) Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by mail.kernel.org (Postfix) with ESMTP id 677CF6113B for ; Wed, 14 Apr 2021 16:33:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 677CF6113B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=networkplumber.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=dev-bounces@dpdk.org Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 5867D161BCC; Wed, 14 Apr 2021 18:33:07 +0200 (CEST) Received: from mail-pl1-f170.google.com (mail-pl1-f170.google.com [209.85.214.170]) by mails.dpdk.org (Postfix) with ESMTP id A468A4013F for ; Wed, 14 Apr 2021 18:33:06 +0200 (CEST) Received: by mail-pl1-f170.google.com with SMTP id h20so10432767plr.4 for ; Wed, 14 Apr 2021 09:33:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=WJBPZwo/aGpnFfaPRwY54Vt/H4VBn4oxfBRJIzXSlCw=; b=HIeCyyer2LQbF8jEXhQ+B1+ZiRtgy4eqnR9ognyXrW5J2VaC4fRM0zDLe1Wpdpx5V2 gRFw1iGsG6UX6oC12rBizgEZ0ZfpnyV0PQJXslwphbgZV++f1gdO7gH3SyQXAh0BwzzF sYoPsPsLBQWIHi+4eIeqNRIN9+UV1tSzd1g2N5qg+zKYJQtySUCGUGLLA/iyJq8YHDOb WcTR2bppbeM3kgJ5jfhgr6p529GUKuSZJGReuIBeqIdz0cXEe0Ig5RM51GMi7ET37BhU APzY7igX6ld8yhtq6f6KeX1RjnOI5tqnVjDmIMPv0qSWuXJwcNJlWDQj74ZGud6wQjyJ P3dg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=WJBPZwo/aGpnFfaPRwY54Vt/H4VBn4oxfBRJIzXSlCw=; b=t5KpRGo/NHXRc4krTJzoFFB9XH2+kW2/BhBYBY3Q5xcPfzqiSIVFYk4Q7vLOq67AwO cHXZnIDYJzWm+IAqOwOUtmSdJRWJ2u//d8ms4rF8mh3A4vBNGBMgsccB9IN0Di6S2TPT yB527RrWY9ol35Etw1MXaJH2zIpUphmlGSsfmtxFjD/x/RT52T/Zx5yCdzi1SGm1af3k IQl/1CpuHlRK2yRqEN5GDie5kyfmLxCRFK8/ZiChbn+LV8SzIZvdpagARSjd2XXD7jsS V1fbHqiwGrk4PdI6SheqypI4sNzHGk09Uji2/16zDt8hW5d+AqJUYCpu/0sw8bYffavk lchA== X-Gm-Message-State: AOAM531ThDkXzhMr3GxbQxWmFitNWhrb0Mr0V7oR3SpMfDRQj9uJKTZz BFYMTAyvQhgzpRZh4e7VJPydXQ== X-Google-Smtp-Source: ABdhPJxS7q6t8Lf+9cnhtnFKy3CN3+QS7FjM7XTrHgi9Ugej3+vTYUTvw4UIeSoDpw2+QhS3NbPiMA== X-Received: by 2002:a17:90a:7f8b:: with SMTP id m11mr4350435pjl.221.1618417985769; Wed, 14 Apr 2021 09:33:05 -0700 (PDT) Received: from hermes.local (76-14-218-44.or.wavecable.com. [76.14.218.44]) by smtp.gmail.com with ESMTPSA id l2sm5418066pji.45.2021.04.14.09.33.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Apr 2021 09:33:05 -0700 (PDT) Date: Wed, 14 Apr 2021 09:29:38 -0700 From: Stephen Hemminger To: David Marchand Cc: Bruce Richardson , dev Message-ID: <20210414092938.22d017a8@hermes.local> In-Reply-To: References: <20210216094300.27889-1-bruce.richardson@intel.com> <20210216095140.GA136@bricha3-MOBL.ger.corp.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-dev] [PATCH] eal: support using 0 as coremask for no-affinitization X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On Wed, 14 Apr 2021 18:15:34 +0200 David Marchand wrote: > On Tue, Feb 16, 2021 at 10:52 AM Bruce Richardson > wrote: > > > > On Tue, Feb 16, 2021 at 09:43:00AM +0000, Bruce Richardson wrote: > > > Allow the user to specify that they don't want any core pinning from DPDK > > > by passing in the coremask of 0. > > > --- > > > > Apologies, missed my signoff, will add in V2, but will wait for feedback on > > this V1 first. > > I did not see a v2, is this still for 21.05? > > What are the usecases for this feature? > I could think of using this in combination with external threads in > applications like OVS... ? > > It would cause lots of DPDK applications to discover the problems with preemption and priority inversion with DPDK spinlocks...