From owner-svn-src-all@freebsd.org Mon May 16 18:44:34 2016 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id A1144B3DE4A; Mon, 16 May 2016 18:44:34 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from bigwig.baldwin.cx (bigwig.baldwin.cx [IPv6:2001:470:1f11:75::1]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 809AC1DC6; Mon, 16 May 2016 18:44:34 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from ralph.baldwin.cx (c-73-231-226-104.hsd1.ca.comcast.net [73.231.226.104]) by bigwig.baldwin.cx (Postfix) with ESMTPSA id 6FA2FB99A; Mon, 16 May 2016 14:44:33 -0400 (EDT) From: John Baldwin To: Julian Elischer Cc: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r299746 - in head/sys: cddl/dev/dtrace cddl/dev/dtrace/amd64 cddl/dev/dtrace/i386 cddl/dev/dtrace/powerpc conf dev/acpica dev/hwpmc dev/hyperv/vmbus dev/xen/control geom/eli kern net sy... Date: Mon, 16 May 2016 10:56:35 -0700 Message-ID: <1993919.8YVJPRnaqB@ralph.baldwin.cx> User-Agent: KMail/4.14.3 (FreeBSD/10.2-STABLE; KDE/4.14.3; amd64; ; ) In-Reply-To: <0539c5c3-dce8-1659-d26e-ef136f256f10@freebsd.org> References: <201605141822.u4EIMqkx090971@repo.freebsd.org> <0539c5c3-dce8-1659-d26e-ef136f256f10@freebsd.org> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.7 (bigwig.baldwin.cx); Mon, 16 May 2016 14:44:33 -0400 (EDT) X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 16 May 2016 18:44:34 -0000 On Monday, May 16, 2016 01:25:56 PM Julian Elischer wrote: > On 15/05/2016 2:22 AM, John Baldwin wrote: > > Author: jhb > > Date: Sat May 14 18:22:52 2016 > > New Revision: 299746 > > URL: https://svnweb.freebsd.org/changeset/base/299746 > > > > Log: > > Add an EARLY_AP_STARTUP option to start APs earlier during boot. > > As a transition aid, the new behavior is available under a new kernel > > option (EARLY_AP_STARTUP). This will allow the option to be turned off > > if need be during initial testing. I plan to enable this on x86 by > > default in a followup commit in the next few days and to have all > > platforms moved over before 11.0. Once the transition is complete, > > the option will be removed along with the !EARLY_AP_STARTUP code. > John, This feels as though it should be settable with a tuneable > variable. Can you think > of a good way to do this other than having two sysinit entries and making > the tuneable "enable" the right one? There is no tuneable/sysinit > interaction otherwise. The idea is for the !EARLY_AP_STARTUP code to be temporary, so I think adding a tunable is probably a bit much to add in terms of overhead for something that should be temporary. -- John Baldwin