Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754646AbXICMeY (ORCPT ); Mon, 3 Sep 2007 08:34:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752586AbXICMeQ (ORCPT ); Mon, 3 Sep 2007 08:34:16 -0400 Received: from wa-out-1112.google.com ([209.85.146.176]:23791 "EHLO wa-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752316AbXICMeQ (ORCPT ); Mon, 3 Sep 2007 08:34:16 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=W4awMl+f8fJ//h4Jnrj9fpWkAcD7UGLMLxPh56WDCbHm7XVXt/RWEbDzUUdH/vVn4BQzWEhXkB/J84bAeza9n1TCTWO+h+ECdDW6ycJ3LTPQflrXdRhy3e3gQXdW0Jkp1rVWEjk7FwZnJa7Bfsd8fFSfKYm6BxqcoMPLY2J4/lE= Message-ID: Date: Mon, 3 Sep 2007 20:34:09 +0800 From: "Jeff Chua" To: "Pavel Machek" Subject: Re: highres timers break cpu hotplug in 2.6.23-rc5 [was Re: cpu hotplug support broken in 2.6.23-rc3] Cc: rusty@rustycorp.com.au, vatsa@in.ibm.com, zwane@arm.linux.org.uk, "kernel list" , "Rafael J. Wysocki" , tglx@linutronix.de In-Reply-To: <20070903035644.GC3655@ucw.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20070827104350.GA2073@elf.ucw.cz> <20070827105801.GA4053@elf.ucw.cz> <20070827213248.GF3398@elf.ucw.cz> <20070903035644.GC3655@ucw.cz> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 820 Lines: 21 On 9/3/07, Pavel Machek wrote: > It gets weirder. With "nohz=off" on commandline, I have to press any > key (generate interrupt?) for echo 1 > online to finish. 2.6.23-rc5 > kernel... but hotplug/unplug works reliably now. > > With nohz=off highres=off I can unplug/replug cpus as much as I > want... running in tight loop now. Yes. CONFIG_NO_HZ and and CONFIG_HIGH_RES_TIMERS has to be unset or suspend-to-disk would just hang, unless you type something on the keyboard, and then you can suspend to disk. It seems interrupts are not missing. Thanks, Jeff. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/