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=1.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FSL_HELO_FAKE,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED,USER_AGENT_MUTT 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 E93B6C43218 for ; Thu, 25 Apr 2019 19:34:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 10A9C20878 for ; Thu, 25 Apr 2019 19:34:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1556220893; bh=mG8xN3W1XIlLRA9yqVi+oxVSsHjkQT2l8cvRN/yGC+U=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=sO8RFjd9Dny1lHWFDu3rKCcAb6SgCIoLymRbFeINnYx7OjO+HoqRljwh8w46tUY9J G+IM6aQQP+EBRUwqhnYJ2yDTTPbsJM/HNBchqHT0eayXL/xVgelodiwP/hRpSRanlw fXA2QLwkidswClKslLsTU5xSWk3P3Vam7LxyRBAY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727235AbfDYTev (ORCPT ); Thu, 25 Apr 2019 15:34:51 -0400 Received: from mail-wr1-f67.google.com ([209.85.221.67]:45569 "EHLO mail-wr1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725937AbfDYTeu (ORCPT ); Thu, 25 Apr 2019 15:34:50 -0400 Received: by mail-wr1-f67.google.com with SMTP id s15so920540wra.12 for ; Thu, 25 Apr 2019 12:34:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=aLa64zhlXxMyC2Tir99IyG526INuSRHP5IVsq0Po6r8=; b=dsQVzcVw5oduW5rMqps2yFvwW1g6653YJKIHakrbvwX22KQg/vLLwyhVHJY6lcD/2z s9tvG8JeaXxDL7JBItyScC8BI/oswkHc5wmJcOVf0wIXBzc/nij5sRAEG9Q74ocSGKVn Hygrzpp9kwHCvHfDZ/tTSqpBuuKKzlJPqZOEn6hfa7gAelmBcTu3u87qgAJoODTCoa0V gz269gOQ7FSWdVZjt9DpRvTGA0nmn+5E3AN9P1/UuoEbXIUQyTP/FUa460c7kYw9Gq+f d8SFwpj0ApdBwAUAsir5Jp9XCywRXlz51v3g+4bxAhQjp7Z5DpNFIPSW3WBP7v25krLc 86Vg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to:user-agent; bh=aLa64zhlXxMyC2Tir99IyG526INuSRHP5IVsq0Po6r8=; b=QNhunP4KRwSyOxhaNHT5D3p2iN/X3RvHI0jVp/Inlbm10m+4svnW/kFQl72XKocekn U44RchmhpH1vG3arx0anTj6TCF80nGUXmzX0l9bhS8zbyOskxi6GytKsP8YfhCep02rn csWAGHWje+nFXetQKg+OAESy/SC8FlMEvw8Y2rwv7ynzyO0YW2zN+Ki8YVouRV/nDnQU ONeRje9CdmDcGfStRZzvMFDlZQuN+Ncx6bscV+fhUuZOePpueTI2jHj+8JjDx9tAhHBH LEuoFEbiG3eg40E0yyDrZGaPweJbF1Un4iy6zDL7BYjTejmsXA/VPI3G3VR+TQIKnx6x lafA== X-Gm-Message-State: APjAAAXV0q4TX2oQNu+CrTUANUBWomPj8lfYcQfXW13rxiync3Wm6Pnf 4dllSAmbEE7bMKWEPI34fow= X-Google-Smtp-Source: APXvYqxTvxrf/QIlHZbDx1Kj2iK/CBWPtKOxMIBY1fslg/6oxMcTHefxmcYcFo99D9k2gM1p3vrIGQ== X-Received: by 2002:adf:dec5:: with SMTP id i5mr2427398wrn.157.1556220888979; Thu, 25 Apr 2019 12:34:48 -0700 (PDT) Received: from gmail.com (2E8B0CD5.catv.pool.telekom.hu. [46.139.12.213]) by smtp.gmail.com with ESMTPSA id e1sm21562109wrw.66.2019.04.25.12.34.47 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 25 Apr 2019 12:34:48 -0700 (PDT) Date: Thu, 25 Apr 2019 21:34:45 +0200 From: Ingo Molnar To: Thomas Gleixner Cc: Mel Gorman , Aubrey Li , Julien Desfossez , Vineeth Remanan Pillai , Nishanth Aravamudan , Peter Zijlstra , Tim Chen , Paul Turner , Linus Torvalds , Linux List Kernel Mailing , Subhra Mazumdar , Fr?d?ric Weisbecker , Kees Cook , Greg Kerr , Phil Auld , Aaron Lu , Valentin Schneider , Pawan Gupta , Paolo Bonzini , Jiri Kosina Subject: Re: [RFC PATCH v2 00/17] Core scheduling v2 Message-ID: <20190425193445.GB91578@gmail.com> References: <20190424140013.GA14594@sinkpad> <20190425095508.GA8387@gmail.com> <20190425144619.GX18914@techsingularity.net> <20190425185343.GA122353@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Thomas Gleixner wrote: > It exists already: /sys/devices/system/cpu/smt/control > > Setting it to off will offline all siblings, on will online them again. Indeed, added by 05736e4ac13c last year (and I promptly forgot about it ...) - I was thrown off a bit by the 'nosmt' flag Mel used, but that's probably because he used an older kernel. Thanks, Ingo