From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sebastian Andrzej Siewior Subject: [ANNOUNCE] 4.0.4-rt1 Date: Tue, 19 May 2015 23:39:23 +0200 Message-ID: <20150519213923.GA26363@linutronix.de> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: LKML , Thomas Gleixner , rostedt@goodmis.org, John Kacur To: linux-rt-users Return-path: Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-rt-users.vger.kernel.org Dear RT folks! I'm pleased to announce the v4.0.4-rt1 patch set. Changes since v3.18.13-rt10 - Rebase to v4.0. - David Hildenbrand's series of decouple of preempt_disable from pagefault_disable is part of the series. While doing the v4.0 I stumbled upon a few things. Therefore I plan to reorder the -RT queue and merge patches where possible. Also I intend t= o drop PREEMPT_RTB and PREEMPT_RT_BASE unless there is need for it=E2=80=A6 Known issues: - My AMD box throws a lot of "cpufreq_stat_notifier_trans: No policy found" warnings after boot. It is gone after manually setting the policy (to something else than reported). - bcache is disabled. - CPU hotplug works in general. Steven's test script however deadlocks usually on the second invocation. - xor / raid_pq I had max latency jumping up to 67563us on one CPU while the ne= xt lower max was 58us. I tracked it down to module's init code of xor and raid_pq. Both disable preemption while measuring the performance of the individual implementation. The RT patch against 4.0.4 can be found here: https://www.kernel.org/pub/linux/kernel/projects/rt/4.0/patch-4.0.4-= rt1.patch.xz The split quilt queue is available at: https://www.kernel.org/pub/linux/kernel/projects/rt/4.0/patches-4.0.= 4-rt1.tar.xz Sebastian