From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265385AbUBIUhm (ORCPT ); Mon, 9 Feb 2004 15:37:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265415AbUBIUhm (ORCPT ); Mon, 9 Feb 2004 15:37:42 -0500 Received: from chaos.analogic.com ([204.178.40.224]:36482 "EHLO chaos.analogic.com") by vger.kernel.org with ESMTP id S265385AbUBIUhl (ORCPT ); Mon, 9 Feb 2004 15:37:41 -0500 Date: Mon, 9 Feb 2004 15:40:32 -0500 (EST) From: "Richard B. Johnson" X-X-Sender: root@chaos Reply-To: root@chaos.analogic.com To: moseleyt@colorado.edu cc: Linux kernel Subject: Re: halting processor in SMT(Hyperthreading) system In-Reply-To: <1076357703.4027ea47ed2e3@webmail.colorado.edu> Message-ID: References: <1076357703.4027ea47ed2e3@webmail.colorado.edu> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 9 Feb 2004 moseleyt@colorado.edu wrote: > Hello, > > I am doing research involving optimal scheduling for Hyperthreading systems. I > was curious if there was an easy way to arbitrarily halt/wake up a processor > other than the one being run on from schedule(). > > Thanks > > Tipp The processor that executes a hlt instruction is the one that will be halted. It takes an interrupt to get out of that state. Cheers, Dick Johnson Penguin : Linux version 2.4.24 on an i686 machine (797.90 BogoMips). Note 96.31% of all statistics are fiction.