From: Peter Zijlstra <peterz@infradead.org> To: mingo@kernel.org, juri.lelli@redhat.com Cc: linux-kernel@vger.kernel.org, dietmar.eggemann@arm.com, luca.abeni@santannapisa.it, bristot@redhat.com, balsini@android.com, dvyukov@google.com, tglx@linutronix.de, vpillai@digitalocean.com, rostedt@goodmis.org, peterz@infradead.org Subject: [RFC][PATCH 00/13] SCHED_DEADLINE server infrastructure Date: Fri, 26 Jul 2019 16:54:09 +0200 Message-ID: <20190726145409.947503076@infradead.org> (raw) Hi, So recently syzcaller ran into the big deadline/period issue (again), and I figured I should at least propose a patch that puts limits on that -- see Patch 1. During that discussion; SCHED_OTHER servers got mentioned (also again), and I figured I should have a poke at that too. So I took some inspiration from patches Alessio Balsini send a while back and cobbled something together for that too. Included are also a bunch of patches I did for core scheduling (2-8), which I'm probably going to just merge as they're generic cleanups. They're included here because they make pick_next_task() simpler and thereby thinking about the nested pick_next_task() logic inherent in servers was less of a head-ache. (I think it can work fine without them, but its easier with them on) Anyway; after it all compiled it booted a kvm image all the way to userspace on the first run, so clearly this code isn't to be trusted at all. There's still lots of missing bits and pieces -- like changelogs and the fair server isn't configurable or hooked into the bandwidth accounting, but the foundation is there I think. Enjoy!
next reply index Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-07-26 14:54 Peter Zijlstra [this message] 2019-07-26 14:54 ` [RFC][PATCH 01/13] sched/deadline: Impose global limits on sched_attr::sched_period Peter Zijlstra 2019-07-29 8:57 ` Juri Lelli 2019-07-29 11:45 ` Daniel Bristot de Oliveira 2019-08-02 17:21 ` Alessio Balsini 2019-08-05 11:53 ` Peter Zijlstra 2019-08-22 12:29 ` Alessio Balsini 2019-08-22 16:51 ` Peter Zijlstra 2019-08-31 14:41 ` Alessio Balsini 2019-09-02 9:16 ` Peter Zijlstra 2019-09-02 12:31 ` Peter Zijlstra 2019-09-04 10:16 ` Steven Rostedt 2019-09-04 11:30 ` Peter Zijlstra 2019-09-04 13:24 ` Joel Fernandes 2019-09-04 14:11 ` Will Deacon 2019-09-04 14:35 ` Joel Fernandes 2019-09-04 15:52 ` Peter Zijlstra 2019-10-23 17:17 ` [PATCH 4.4 4.9 4.14] loop: Add LOOP_SET_DIRECT_IO to compat ioctl Alessio Balsini 2019-10-23 17:22 ` Alessio Balsini 2019-10-25 0:17 ` Sasha Levin 2019-07-26 14:54 ` [RFC][PATCH 02/13] stop_machine: Fix stop_cpus_in_progress ordering Peter Zijlstra 2019-07-30 13:16 ` Phil Auld 2019-07-30 13:22 ` Steven Rostedt 2019-07-26 14:54 ` [RFC][PATCH 03/13] sched: Fix kerneldoc comment for ia64_set_curr_task Peter Zijlstra 2019-07-26 14:54 ` [RFC][PATCH 04/13] sched/{rt,deadline}: Fix set_next_task vs pick_next_task Peter Zijlstra 2019-07-29 9:25 ` Juri Lelli 2019-07-29 11:15 ` Peter Zijlstra 2019-07-29 11:27 ` Juri Lelli 2019-07-29 13:04 ` Peter Zijlstra 2019-07-29 13:17 ` Juri Lelli 2019-07-29 14:40 ` Peter Zijlstra 2019-07-26 14:54 ` [RFC][PATCH 05/13] sched: Add task_struct pointer to sched_class::set_curr_task Peter Zijlstra 2019-07-26 14:54 ` [RFC][PATCH 06/13] sched/fair: Export newidle_balance() Peter Zijlstra 2019-07-26 14:54 ` [RFC][PATCH 07/13] sched: Allow put_prev_task() to drop rq->lock Peter Zijlstra 2019-07-26 14:54 ` [RFC][PATCH 08/13] sched: Rework pick_next_task() slow-path Peter Zijlstra 2019-07-26 14:54 ` [RFC][PATCH 09/13] sched: Unify runtime accounting across classes Peter Zijlstra 2019-07-26 14:54 ` [RFC][PATCH 10/13] sched/deadline: Collect sched_dl_entity initialization Peter Zijlstra 2019-07-26 14:54 ` [RFC][PATCH 11/13] sched/deadline: Move bandwidth accounting into {en,de}queue_dl_entity Peter Zijlstra 2019-07-26 14:54 ` [RFC][PATCH 12/13] sched/deadline: Introduce deadline servers Peter Zijlstra 2019-08-07 16:31 ` Dietmar Eggemann 2019-08-08 6:52 ` Juri Lelli 2019-08-08 7:52 ` Dietmar Eggemann 2019-08-08 7:56 ` Peter Zijlstra 2019-08-08 8:11 ` Dietmar Eggemann 2019-08-08 8:46 ` Juri Lelli 2019-08-08 8:57 ` Dietmar Eggemann 2019-08-08 9:27 ` Juri Lelli 2019-08-08 9:45 ` Juri Lelli 2019-08-30 11:24 ` Peter Zijlstra 2019-09-06 9:36 ` Juri Lelli 2019-08-08 10:31 ` Peter Zijlstra 2019-08-09 7:13 ` Juri Lelli 2019-08-08 6:59 ` Juri Lelli 2019-08-09 9:17 ` Dietmar Eggemann 2019-08-09 12:16 ` Juri Lelli 2019-07-26 14:54 ` [RFC][PATCH 13/13] sched/fair: Add trivial fair server Peter Zijlstra 2019-07-26 20:01 ` [RFC][PATCH 00/13] SCHED_DEADLINE server infrastructure luca abeni 2019-09-03 14:27 ` Alessio Balsini 2019-09-04 10:50 ` Juri Lelli 2019-09-04 11:32 ` Peter Zijlstra
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