From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ingo Molnar Subject: Re: appearance of /proc/interrupts ? Date: Thu, 11 Jan 2007 10:50:55 +0100 Message-ID: <20070111095055.GA29844@elte.hu> References: <45A608A0.1050407@imc-berlin.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-rt-users@vger.kernel.org Return-path: Received: from mx2.mail.elte.hu ([157.181.151.9]:57555 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030258AbXAKKrO (ORCPT ); Thu, 11 Jan 2007 05:47:14 -0500 To: Steven Scholz Content-Disposition: inline In-Reply-To: <45A608A0.1050407@imc-berlin.de> Sender: linux-rt-users-owner@vger.kernel.org List-Id: linux-rt-users.vger.kernel.org * Steven Scholz wrote: > with Linux 2.6.17-rt3 /proc/interrupts looks as described on > > http://rt.wiki.kernel.org/index.php/RT_PREEMPT_HOWTO > > CPU0 > 0: 11188 XT-PIC [........N/ 0]-level pit > 1: 8 XT-PIC [........./ 0]-level i8042 > 2: 0 XT-PIC [........N/ 0]-level cascade > 4: 131 XT-PIC [........./ 10]-level serial > 11: 10 XT-PIC [........./ 0]-level eth0 > 14: 4087 XT-PIC [........./ 0]-level ide0 > > But when using a Linux 2.6.19.1-rt15 it looks like > > CPU0 > 0: 15499 IO-APIC-edge timer > 1: 8 IO-APIC-edge i8042 > 4: 161 IO-APIC-edge serial > 9: 0 IO-APIC-fasteoi acpi > 12: 3 IO-APIC-edge i8042 > 14: 4082 IO-APIC-edge ide0 > 16: 93 IO-APIC-fasteoi eth0 > > which is pretty much the same as a vanilla 2.6.19. > > What does it mean? Is RT PREEMPT not working correctly? i restored it to be as compatible with upstream as possible. You have a PREEMPT_RT kernel if you have this message in the dmesg: Real-Time Preemption Support (C) 2004-2006 Ingo Molnar Ingo