From mboxrd@z Thu Jan 1 00:00:00 1970 From: Carsten Emde Subject: Re: Configuration of real-time tasks in PREEMPT_RT kernels > 2.6.33 Date: Tue, 27 Aug 2013 23:12:13 +0200 Message-ID: <521D162D.3030301@osadl.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: linux-rt-users@vger.kernel.org To: Wolfgang Wallner Return-path: Received: from toro.web-alm.net ([62.245.132.31]:48626 "EHLO toro.web-alm.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751742Ab3H0VXM (ORCPT ); Tue, 27 Aug 2013 17:23:12 -0400 In-Reply-To: Sender: linux-rt-users-owner@vger.kernel.org List-ID: Wolfgang, > I know that in 2.6.33 there were splitted softirqs, and that it was possible to configure each thread with its own priority. > What are the steps that need to be done in 3.x to achieve similar results as in 2.6.33? The full story is here -> https://www.osadl.org/?id=930. Among others, it says "Thomas Gleixner found the most elegant solution that directly runs the network task in the context of the IRQ thread of the related device and, thus, implicitly adopts its priority." BTW: Thomas did this work when he ported RT to kernel version 3.6, Sebastian posted his backport to 3.2 and 3.4 half a year ago. The missed softirq split is history. -Carsten.