From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751303AbWFTPMZ (ORCPT ); Tue, 20 Jun 2006 11:12:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751304AbWFTPMZ (ORCPT ); Tue, 20 Jun 2006 11:12:25 -0400 Received: from www.osadl.org ([213.239.205.134]:6589 "EHLO mail.tglx.de") by vger.kernel.org with ESMTP id S1751303AbWFTPMY (ORCPT ); Tue, 20 Jun 2006 11:12:24 -0400 Subject: Re: Why can't I set the priority of softirq-hrt? (Re: 2.6.17-rt1) From: Thomas Gleixner Reply-To: tglx@linutronix.de To: Esben Nielsen Cc: Ingo Molnar , linux-kernel@vger.kernel.org In-Reply-To: References: <20060618070641.GA6759@elte.hu> Content-Type: text/plain Date: Tue, 20 Jun 2006 17:13:49 +0200 Message-Id: <1150816429.6780.222.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.6.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2006-06-20 at 17:01 +0100, Esben Nielsen wrote: > Hi, > I wanted to run some tests with RTExec and I wanted to play around with > the priorities, but I could not set the priorities of softirq-hrtXXXX. > I looked a bit in the code and found that hrtimer_adjust_softirq_prio() is > called every loop, setting it back to priority 1. > > Why is that? Can it be fixed so it behaves as any other task you can use > chrt on? No, please see http://www.linutronix.de/index.php?mact=News,cntnt01,detail,0&cntnt01articleid=8&cntnt01dateformat=%25b%20%25d%2C%20%25Y&cntnt01returnid=31 Dynamic priority support for high resolution timers tglx