Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267921AbUJVVw5 (ORCPT ); Fri, 22 Oct 2004 17:52:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268035AbUJVVvu (ORCPT ); Fri, 22 Oct 2004 17:51:50 -0400 Received: from zcars04f.nortelnetworks.com ([47.129.242.57]:60545 "EHLO zcars04f.nortelnetworks.com") by vger.kernel.org with ESMTP id S267921AbUJVVqd (ORCPT ); Fri, 22 Oct 2004 17:46:33 -0400 Message-ID: <41797FB2.4000300@nortelnetworks.com> Date: Fri, 22 Oct 2004 15:46:26 -0600 X-Sybari-Space: 00000000 00000000 00000000 00000000 From: Chris Friesen User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040113 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Alan Cox CC: Lee Revell , Linux Kernel Mailing List , Robert Love Subject: Re: How is user space notified of CPU speed changes? References: <1098399709.4131.23.camel@krustophenia.net> <1098444170.19459.7.camel@localhost.localdomain> <1098468316.5580.18.camel@krustophenia.net> <4179623C.9050807@nortelnetworks.com> <1098476905.19435.43.camel@localhost.localdomain> In-Reply-To: <1098476905.19435.43.camel@localhost.localdomain> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 577 Lines: 16 Alan Cox wrote: > On Gwe, 2004-10-22 at 20:40, Chris Friesen wrote: > >>x86 really could use an on-die register that increments at 1GHz independent of >>clock speed and is synchronized across all CPUs in an SMP box. > HPET sort of is this but at chipset level Right. So you still have to go across the cpu bus to get it. Chris - 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/