linux-kernel - Re: [PATCH 00/19] sched: Core Scheduling

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Message-ID: <CAEXW_YT5AoRwS7XZreX-_2OAzoQNVUeaOH3nJFvV65T0zDaP5g@mail.gmail.com>
Date:   Fri, 7 May 2021 14:02:06 -0400
From:   Joel Fernandes <joel@...lfernandes.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     "Hyser,Chris" <chris.hyser@...cle.com>,
        Josh Don <joshdon@...gle.com>, Ingo Molnar <mingo@...nel.org>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Valentin Schneider <valentin.schneider@....com>,
        Mel Gorman <mgorman@...e.de>,
        LKML <linux-kernel@...r.kernel.org>,
        Thomas Glexiner <tglx@...utronix.de>
Subject: Re: [PATCH 00/19] sched: Core Scheduling

On Thu, Apr 22, 2021 at 8:36 AM Peter Zijlstra <peterz@...radead.org> wrote:
>
> Hai,
>
> This is an agressive fold of all the core-scheduling work so far. I've stripped
> a whole bunch of tags along the way (hopefully not too many, please yell if you
> feel I made a mistake), including tested-by. Please retest.
>
> Changes since the last partial post is dropping all the cgroup stuff and
> PR_SCHED_CORE_CLEAR as well as that exec() behaviour in order to later resolve
> the cgroup issue.
>
> Since we're really rather late for the coming merge window, my plan was to
> merge the lot right after the merge window.
>
> Again, please test.

Thanks Peter, I uploaded this set to our ChromeOS 5.10 kernel tree
with minor changes to make it apply, to:
https://chromium-review.googlesource.com/q/topic:cs510
Let me know if anything looks weird, but it does build. I will be
testing it further in the coming days.

Of course product kernels slightly lag upstream but such is life <:-)

 - Joel

>
> These patches should shortly be available in my queue.git.
>
> ---
>  b/kernel/sched/core_sched.c                     |  229 ++++++
>  b/tools/testing/selftests/sched/.gitignore      |    1
>  b/tools/testing/selftests/sched/Makefile        |   14
>  b/tools/testing/selftests/sched/config          |    1
>  b/tools/testing/selftests/sched/cs_prctl_test.c |  338 +++++++++
>  include/linux/sched.h                           |   19
>  include/uapi/linux/prctl.h                      |    8
>  kernel/Kconfig.preempt                          |    6
>  kernel/fork.c                                   |    4
>  kernel/sched/Makefile                           |    1
>  kernel/sched/core.c                             |  858 ++++++++++++++++++++++--
>  kernel/sched/cpuacct.c                          |   12
>  kernel/sched/deadline.c                         |   38 -
>  kernel/sched/debug.c                            |    4
>  kernel/sched/fair.c                             |  276 +++++--
>  kernel/sched/idle.c                             |   13
>  kernel/sched/pelt.h                             |    2
>  kernel/sched/rt.c                               |   31
>  kernel/sched/sched.h                            |  393 ++++++++--
>  kernel/sched/stop_task.c                        |   14
>  kernel/sched/topology.c                         |    4
>  kernel/sys.c                                    |    5
>  tools/include/uapi/linux/prctl.h                |    8
>  23 files changed, 2057 insertions(+), 222 deletions(-)
>