From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750751AbWIJKhQ (ORCPT ); Sun, 10 Sep 2006 06:37:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750755AbWIJKhQ (ORCPT ); Sun, 10 Sep 2006 06:37:16 -0400 Received: from nf-out-0910.google.com ([64.233.182.189]:29509 "EHLO nf-out-0910.google.com") by vger.kernel.org with ESMTP id S1750751AbWIJKhN (ORCPT ); Sun, 10 Sep 2006 06:37:13 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=I/igxxEms+uSolWh84vvo56p5+hoGQuGEtW4awwoRQBdovo8j0mt+itDmgK63hxtIdm4Q+HXT+Kpd+3470jKH8/Bb3IX+jr3aN1rqE5Wzf1w5SUahE/92jhYjXUes0/kpAEd0hDs0MStnpqwZ23NsSKwrlJ4oD+/+v77uep01Vc= Message-ID: Date: Sun, 10 Sep 2006 18:37:12 +0800 From: "Dong Feng" To: linux-kernel@vger.kernel.org Subject: Timer Selection In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org In i386 architecture, there are five timers as candidates in the selection of "cur_timer." I feel among the five only two types can be used as Kernel base timer, HPET and PIT. Kernel base timer is the timer trigger timer_interrupt() periodically. Namely, the timer installed on IRQ 0 in i386 architecture. Is the above understanding correct? Particularly I want to confirm which timers can be used as Kernel base timer. Thanks. Feng,Dong