From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Galbraith Subject: Re: [PATCH RT 2/4] Revert "timers: do not raise softirq unconditionally" Date: Thu, 26 Mar 2015 07:27:30 +0100 Message-ID: <1427351250.3497.49.camel@gmail.com> References: <20150317163541.080310081@goodmis.org> <20150317163617.218582800@goodmis.org> <20150317163551.3093b6c2@gandalf.local.home> <1426753029.4168.80.camel@gmail.com> <20150319122611.0d002d48@gandalf.local.home> <550AFC6A.4050901@hp.com> <1426960943.4677.34.camel@gmail.com> <1427085774.3151.7.camel@gmail.com> <55136C2A.60508@hp.com> <1427347391.3497.25.camel@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: Steven Rostedt , linux-kernel@vger.kernel.org, linux-rt-users , Thomas Gleixner , Carsten Emde , Sebastian Andrzej Siewior , John Kacur , Paul Gortmaker To: Thavatchai Makphaibulchoke Return-path: In-Reply-To: <1427347391.3497.25.camel@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-rt-users.vger.kernel.org On Thu, 2015-03-26 at 06:23 +0100, Mike Galbraith wrote: > I plan on taking a poke at getting "don't raise timer unconditionally" > working again when I get myself unburied, and see if I can come up with > a somewhat less icky way to work around take rtmutex in irq naughtiness. Hm.. like maybe only do a fasttrylock with the wait lock already held via trylock, and don't bother turning it loose until we're done, to keep the sane people away. That might work.. but may not be considered less icky by people equipped with that mysterious "taste" thingy ;-) -Mike