From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from am1outboundpool.messaging.microsoft.com (am1ehsobe001.messaging.microsoft.com [213.199.154.204]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (Client CN "mail.global.frontbridge.com", Issuer "Microsoft Secure Server Authority" (not verified)) by ozlabs.org (Postfix) with ESMTPS id 5CCEA2C0092 for ; Mon, 2 Jul 2012 20:43:37 +1000 (EST) Received: from mail8-am1 (localhost [127.0.0.1]) by mail8-am1-R.bigfish.com (Postfix) with ESMTP id 31BED36036A for ; Mon, 2 Jul 2012 10:41:32 +0000 (UTC) Received: from AM1EHSMHS002.bigfish.com (unknown [10.3.201.252]) by mail8-am1.bigfish.com (Postfix) with ESMTP id B09F4380048 for ; Mon, 2 Jul 2012 10:41:30 +0000 (UTC) Received: from localhost.localdomain ([10.213.130.145]) by az84smr01.freescale.net (8.14.3/8.14.0) with ESMTP id q62AhNGJ030800 for ; Mon, 2 Jul 2012 03:43:23 -0700 Date: Mon, 2 Jul 2012 18:44:41 +0800 From: Zhao Chenhui To: Benjamin Herrenschmidt Subject: Re: [PATCH v6 1/5] powerpc/85xx: implement hardware timebase sync Message-ID: <20120702104441.GB22108@localhost.localdomain> References: <1340706359-9455-1-git-send-email-chenhui.zhao@freescale.com> <1340748634.3732.27.camel@pasglop> <20120627102138.GB10476@localhost.localdomain> <1340797732.3732.46.camel@pasglop> <20120628033815.GA11387@localhost.localdomain> <1340880651.20977.83.camel@pasglop> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" In-Reply-To: <1340880651.20977.83.camel@pasglop> Sender: Cc: scottwood@freescale.com, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Thu, Jun 28, 2012 at 08:50:51PM +1000, Benjamin Herrenschmidt wrote: > On Thu, 2012-06-28 at 11:38 +0800, Zhao Chenhui wrote: > > > > > > The bootloader have done a timebase sync. If we do not need KEXEC or > > HOTPLUG_CPU feature, it is unnecessary to do it again at boot time of > > kernel. I only compile the timebase sync routines > > when users enable KEXEC or HOTPLUG_CPU. > > Still, how much are you really saving ? Is it worth the added mess and > loss of test coverage ? > > We have too many conditional stuff like that already. > > Cheers, > Ben. OK. I will remove this config option. -Chenhui