From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexandre Belloni Subject: Re: Fix preempt-rt on AT91 Date: Tue, 19 Jan 2016 02:02:11 +0100 Message-ID: <20160119010211.GU3367@piout.net> References: <1452997394-8554-1-git-send-email-alexandre.belloni@free-electrons.com> <20160118174259.GC12309@linutronix.de> <20160118192308.GR3367@piout.net> <569D4B55.10103@linutronix.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Thomas Gleixner , Boris Brezillon , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org, Nicolas Ferre To: Sebastian Andrzej Siewior Return-path: Received: from down.free-electrons.com ([37.187.137.238]:35146 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932524AbcASBCM (ORCPT ); Mon, 18 Jan 2016 20:02:12 -0500 Content-Disposition: inline In-Reply-To: <569D4B55.10103@linutronix.de> Sender: linux-rt-users-owner@vger.kernel.org List-ID: On 18/01/2016 at 21:30:13 +0100, Sebastian Andrzej Siewior wrote : > Well, if it works properly and does not lead to any new bugs or > anything else then nobody will mind I guess. > Yeah, the DT guys were not happy about the patch set, I'll try to work around using DT ;) > >> All in all, care to forwarded the working pieces from -RT patch set > >> upstream? I problem I have here is mostly that I can't the patches on > >> actual hardware. Disabling the PIT and running on the other clocksource > >> isn't that -RT specific after all :) > > > > I'd say that the only remaining part is the IRQ freeing/requesting but > > as I said, this can't land in mainline as is. I still plan to work on > > that later. > > I'd say that most people running linux on at91 are already using the tcb > > as the clocksource, this is already available in the mainline and is the > > default unless the TCBs are used for something else. > > Wasn't there one of the patches to increase the frequency of the TCB > clocksource from the default to something higher? > Indeed, it may be worth mainlining that one. -- Alexandre Belloni, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com