Received: by 2002:a25:7ec1:0:0:0:0:0 with SMTP id z184csp1107755ybc; Tue, 19 Nov 2019 14:44:32 -0800 (PST) X-Google-Smtp-Source: APXvYqwZpA6WvlXvdk4AdfYASHnHKkBSOb0jGVqp484EW2TLWpU5XYg6QgKGJpq+tE3hQseaQT2A X-Received: by 2002:a17:906:80c:: with SMTP id e12mr160940ejd.59.1574203472277; Tue, 19 Nov 2019 14:44:32 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1574203472; cv=none; d=google.com; s=arc-20160816; b=DjTl911JNrwqxl7voi+gltUQ5FgX4/fdOohMeLHPlYUUowrXLzkgkAQ0PftZLj9559 wa2aihmOL1sRTd9XHZKnOFeaPVZuQCkl30HDPuSe9mZCp/PSpl5uIH4ln1CFVb71ONgl NcezPgv4TjfF4kG/0JMKzaBsi4lKBO0WPPzJY8aq3xFyv2/zvzdnv/eQRAVP5rmdoggU NwcfT13eXlnciRuO91pPZ/yxh4+UnqnYSgR2KBhdZXtOSgvlVeFm1gznar+5IUIOld5d ri9aw0skqfeKaBqQYTuSFdXqwsPRdWS6G3HMZ5aMDJShgkpvtq89I7nuKq9d2rUl5W9F GkOQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:user-agent:references :message-id:in-reply-to:subject:cc:to:from:date; bh=O8CODJf86+1Tzus3uUQLtqSNdI/PTdXAactkDCO+Rh8=; b=L66LnbMZAW+nYapE8EJB3Ok/Pe2K/i9H6iPjkKbpI9wiJh/g1j3IY2ta9Chm8/xaIq TwGdc8m4fwnNP7ZCdSDvzagJYObXpgxT8+e5Fk0liR5wwOAoZYzAMxaxuioGf6QcOIeN BIDFILzl41YfysYdHcTCtAheI0vTnCJeJ5ZZz+ocR8E9JqS3as9TBaEAOxqWpOwc+A1i bOJtY2t3+oA948wsuJHlF86zp0NesQNoWF4Y4K6C7VAwCOcpR4bgk57GM7lXBtPHJCXh AN+MuZ7VOCgIxVG0EY0KypRjbomjFba5OlTzjTyP2FY1pMUXeLMMNwNxq7agrlVTG7R9 ztLQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id oy7si14499624ejb.417.2019.11.19.14.44.08; Tue, 19 Nov 2019 14:44:32 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726948AbfKSWms (ORCPT + 99 others); Tue, 19 Nov 2019 17:42:48 -0500 Received: from Galois.linutronix.de ([193.142.43.55]:54854 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726025AbfKSWms (ORCPT ); Tue, 19 Nov 2019 17:42:48 -0500 Received: from p5b06da22.dip0.t-ipconnect.de ([91.6.218.34] helo=nanos) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1iXCCf-0004lM-NB; Tue, 19 Nov 2019 23:42:33 +0100 Date: Tue, 19 Nov 2019 23:42:32 +0100 (CET) From: Thomas Gleixner To: Qais Yousef cc: Greg Kroah-Hartman , Josh Poimboeuf , "Peter Zijlstra (Intel)" , Jiri Kosina , Nicholas Piggin , Daniel Lezcano , Ingo Molnar , Eiichi Tsukata , Zhenzhong Duan , Nadav Amit , "Rafael J. Wysocki" , linux-kernel@vger.kernel.org Subject: Re: [PATCH 11/12] smp: Create a new function to bringup nonboot cpus online In-Reply-To: <20191030153837.18107-12-qais.yousef@arm.com> Message-ID: References: <20191030153837.18107-1-qais.yousef@arm.com> <20191030153837.18107-12-qais.yousef@arm.com> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 30 Oct 2019, Qais Yousef wrote: > +void smp_bringup_nonboot_cpus(unsigned int setup_max_cpus) > +{ > + unsigned int cpu; > + > + /* FIXME: This should be done in userspace --RR */ This fixme is stale and should just go away. > + for_each_present_cpu(cpu) { > + if (num_online_cpus() >= setup_max_cpus) > + break; > + if (!cpu_online(cpu)) > + cpu_up(cpu); > + } > +} Thanks, tglx