Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756168Ab1FFL6c (ORCPT ); Mon, 6 Jun 2011 07:58:32 -0400 Received: from ccserver2.unican.es ([130.206.5.101]:48567 "EHLO ccserver2.unican.es" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756061Ab1FFL6b (ORCPT ); Mon, 6 Jun 2011 07:58:31 -0400 Message-ID: <4DECC0DF.8070209@unican.es> Date: Mon, 6 Jun 2011 13:58:23 +0200 From: Monica Puig-Pey User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.17) Gecko/20110424 Thunderbird/3.1.10 MIME-Version: 1.0 To: Rolando Martins CC: , Subject: Re: Changing Kernel thread priorities References: <4DEA1BA9.7020303@unican.es><4DEA1F22.6000603@unican.es><4DEA255 B.2050503@unican.es><4DECBE44.2070803@unican.es> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Originating-IP: [193.144.198.131] X-imss-version: 2.054 X-imss-result: Passed X-imss-scanInfo: M:P L:E SM:0 X-imss-tmaseResult: TT:0 TS:0.0000 TC:00 TRN:0 TV:6.5.1024(18182.006) X-imss-scores: Clean:99.90000 C:2 M:3 S:5 R:5 X-imss-settings: Baseline:1 C:1 M:2 S:2 R:2 (0.0000 0.0000) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1695 Lines: 56 El 06/06/11 13:54, Rolando Martins escribi?: > Hi, > I use the following: > > PIDs=$(ps -eLo pid,cls,rtprio,pri,nice,cmd | grep -i "irq" | awk '{ > print $1; }' | xargs echo) > for i in $PIDs > do > ret=$(chrt -f -p 99 $i) > done > > This will change the kernel thread associated with an irq handler to > RT FIFO prio 99. > Just change the script to your specific interrupt. > > Hope it helps, > Rolando > > On Mon, Jun 6, 2011 at 12:47 PM, Monica Puig-Pey wrote: >> I am writing a driver which has one kernel thread associated with it. >> I want to change the priority of this thread, so that I can specify the >> order in which it is scheduled following an interrupt. >> I'm using: >> >> sched_setscheduler(struct task_struct *, int, struct sched_param *); >> >> but it doesn't work. I tried to change the priority from the init_module, >> and also from the Kernel Thread, but there is no way. >> >> Kernel version is 2.6.31-11-rt >> >> What do I call to change a kernel thread priority? >> >> Thanks you very much >> >> M?nica >> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in >> the body of a message to majordomo@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> I need to change the priority from inside the driver, when creating the kernel thread. Your script is useful but it is done in user context, Any other help please? M?nica -- 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/