From: Joel Fernandes <joel@joelfernandes.org>
To: Tim Chen <tim.c.chen@linux.intel.com>
Cc: "Julien Desfossez" <jdesfossez@digitalocean.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Vineeth Remanan Pillai" <vpillai@digitalocean.com>,
"Aubrey Li" <aubrey.intel@gmail.com>,
"Nishanth Aravamudan" <naravamudan@digitalocean.com>,
"Ingo Molnar" <mingo@kernel.org>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Paul Turner" <pjt@google.com>,
"Linus Torvalds" <torvalds@linux-foundation.org>,
"Linux List Kernel Mailing" <linux-kernel@vger.kernel.org>,
"Dario Faggioli" <dfaggioli@suse.com>,
"Frédéric Weisbecker" <fweisbec@gmail.com>,
"Kees Cook" <keescook@chromium.org>,
"Greg Kerr" <kerrnel@google.com>, "Phil Auld" <pauld@redhat.com>,
"Aaron Lu" <aaron.lwe@gmail.com>,
"Valentin Schneider" <valentin.schneider@arm.com>,
"Mel Gorman" <mgorman@techsingularity.net>,
"Pawan Gupta" <pawan.kumar.gupta@linux.intel.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Luck, Tony" <tony.luck@intel.com>
Subject: Re: [RFC PATCH v4 00/19] Core scheduling v4
Date: Tue, 17 Mar 2020 21:10:58 -0400 [thread overview]
Message-ID: <20200318011058.GB111608@google.com> (raw)
In-Reply-To: <1075ba53-91ed-2138-89b3-60fbfbd80b57@linux.intel.com>
Hi Tim,
On Tue, Mar 17, 2020 at 01:18:45PM -0700, Tim Chen wrote:
[..]
> Did you guys have a chance to try out v5 core scheduler?
>
> > - Joel(ChromeOS) found a deadlock and crash on PREEMPT kernel in the
> > coreshed idle balance logic
>
> We did some patches to fix a few stability issues in v4. I wonder
> if v5 still has the deadlock that you saw before?
I have not yet tested v5. I fixed the RCU-related deadlock in the scheduler
with this patch sent few days ago:
https://lore.kernel.org/patchwork/patch/1209561/
I'll rebase my tree on v5 soon.
Thanks!
- Joel
next prev parent reply other threads:[~2020-03-18 1:11 UTC|newest]
Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-30 18:33 [RFC PATCH v4 00/19] Core scheduling v4 Vineeth Remanan Pillai
2019-10-30 18:33 ` [RFC PATCH v4 01/19] stop_machine: Fix stop_cpus_in_progress ordering Vineeth Remanan Pillai
2019-10-30 18:33 ` [RFC PATCH v4 02/19] sched: Fix kerneldoc comment for ia64_set_curr_task Vineeth Remanan Pillai
2019-10-30 18:33 ` [RFC PATCH v4 03/19] sched: Wrap rq::lock access Vineeth Remanan Pillai
2019-10-30 18:33 ` [RFC PATCH v4 04/19] sched/{rt,deadline}: Fix set_next_task vs pick_next_task Vineeth Remanan Pillai
2019-10-30 18:33 ` [RFC PATCH v4 05/19] sched: Add task_struct pointer to sched_class::set_curr_task Vineeth Remanan Pillai
2019-10-30 18:33 ` [RFC PATCH v4 06/19] sched/fair: Export newidle_balance() Vineeth Remanan Pillai
2019-10-30 18:33 ` [RFC PATCH v4 07/19] sched: Allow put_prev_task() to drop rq->lock Vineeth Remanan Pillai
2019-10-30 18:33 ` [RFC PATCH v4 08/19] sched: Rework pick_next_task() slow-path Vineeth Remanan Pillai
2019-10-30 18:33 ` [RFC PATCH v4 09/19] sched: Introduce sched_class::pick_task() Vineeth Remanan Pillai
2019-10-30 18:33 ` [RFC PATCH v4 10/19] sched: Core-wide rq->lock Vineeth Remanan Pillai
2019-10-30 18:33 ` [RFC PATCH v4 11/19] sched: Basic tracking of matching tasks Vineeth Remanan Pillai
2019-10-30 18:33 ` [RFC PATCH v4 12/19] sched: A quick and dirty cgroup tagging interface Vineeth Remanan Pillai
2019-10-30 18:33 ` [RFC PATCH v4 13/19] sched: Add core wide task selection and scheduling Vineeth Remanan Pillai
2019-10-30 18:33 ` [RFC PATCH v4 14/19] sched/fair: Add a few assertions Vineeth Remanan Pillai
2019-10-30 18:33 ` [RFC PATCH v4 15/19] sched: Trivial forced-newidle balancer Vineeth Remanan Pillai
2019-10-30 18:33 ` [RFC PATCH v4 16/19] sched: Debug bits Vineeth Remanan Pillai
2019-10-30 18:33 ` [RFC PATCH v4 17/19] sched/fair: wrapper for cfs_rq->min_vruntime Vineeth Remanan Pillai
2019-10-30 18:33 ` [RFC PATCH v4 18/19] sched/fair: core wide vruntime comparison Vineeth Remanan Pillai
2019-10-30 18:33 ` [RFC PATCH v4 19/19] sched/fair : Wake up forced idle siblings if needed Vineeth Remanan Pillai
2019-10-31 11:42 ` [RFC PATCH v4 00/19] Core scheduling v4 Li, Aubrey
2019-11-01 11:33 ` Li, Aubrey
2019-11-08 3:20 ` Li, Aubrey
2019-10-31 18:42 ` Phil Auld
2019-11-01 14:03 ` Vineeth Remanan Pillai
2019-11-01 16:35 ` Greg Kerr
2019-11-01 18:07 ` Dario Faggioli
2019-11-12 1:45 ` Dario Faggioli
2019-11-13 17:16 ` Tim Chen
2020-01-02 2:28 ` Aubrey Li
2020-01-10 23:19 ` Tim Chen
2019-11-11 19:10 ` Tim Chen
2020-01-14 1:12 ` Tim Chen
2020-01-14 15:40 ` Vineeth Remanan Pillai
2020-01-15 3:43 ` Li, Aubrey
2020-01-15 19:33 ` Tim Chen
2020-01-16 1:45 ` Aubrey Li
2020-01-17 16:00 ` Vineeth Remanan Pillai
2020-01-22 18:04 ` Gruza, Agata
2020-01-28 2:40 ` Dario Faggioli
[not found] ` <CANaguZDDpzrzdTmvjXvCmV2c+wBt6mXWSz4Vn-LJ-onc_Oj=yw@mail.gmail.com>
2020-02-01 15:31 ` Dario Faggioli
2020-02-06 0:28 ` Tim Chen
2020-02-06 22:37 ` Julien Desfossez
2020-02-12 23:07 ` Julien Desfossez
2020-02-13 18:37 ` Tim Chen
2020-02-14 6:10 ` Aubrey Li
[not found] ` <CANaguZC40mDHfL1H_9AA7H8cyd028t9PQVRqQ3kB4ha8R7hhqg@mail.gmail.com>
2020-02-15 6:01 ` Aubrey Li
[not found] ` <CANaguZBj_x_2+9KwbHCQScsmraC_mHdQB6uRqMTYMmvhBYfv2Q@mail.gmail.com>
2020-02-21 23:20 ` Julien Desfossez
2020-03-17 0:55 ` Joel Fernandes
2020-03-17 19:07 ` Tim Chen
2020-03-17 20:18 ` Tim Chen
2020-03-18 1:10 ` Joel Fernandes [this message]
2020-03-17 21:17 ` Thomas Gleixner
2020-03-17 21:58 ` Tim Chen
2020-03-18 1:03 ` Joel Fernandes
2020-03-18 2:30 ` Joel Fernandes
2020-03-18 0:52 ` Joel Fernandes
2020-03-18 11:53 ` Thomas Gleixner
2020-03-19 1:54 ` Joel Fernandes
2020-02-25 3:44 ` Aaron Lu
2020-02-25 5:32 ` Aubrey Li
2020-02-25 7:34 ` Aaron Lu
2020-02-25 10:40 ` Aubrey Li
2020-02-25 11:21 ` Aaron Lu
2020-02-25 13:41 ` Aubrey Li
[not found] ` <CANaguZD205ccu1V_2W-QuMRrJA9SjJ5ng1do4NCdLy8NDKKrbA@mail.gmail.com>
2020-02-26 3:13 ` Aaron Lu
2020-02-26 7:21 ` Aubrey Li
[not found] ` <CANaguZDQZg-Z6aNpeLcjQ-cGm3X8CQOkZ_hnJNUyqDRM=yVDFQ@mail.gmail.com>
2020-02-27 4:45 ` Aubrey Li
2020-02-28 23:55 ` Tim Chen
2020-03-03 14:59 ` Li, Aubrey
2020-03-03 23:54 ` Li, Aubrey
2020-03-05 4:33 ` Aaron Lu
2020-03-05 6:10 ` Li, Aubrey
2020-03-05 8:52 ` Aaron Lu
2020-02-27 2:04 ` Aaron Lu
2020-02-27 14:10 ` Phil Auld
2020-02-27 14:37 ` Aubrey Li
2020-02-28 2:54 ` Aaron Lu
2020-03-05 13:45 ` Aubrey Li
2020-03-06 2:41 ` Aaron Lu
2020-03-06 18:06 ` Tim Chen
2020-03-06 18:33 ` Phil Auld
2020-03-06 21:44 ` Tim Chen
2020-03-07 3:13 ` Aaron Lu
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