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From:   Don Hiatt <dhiatt@digitalocean.com>
Date:   Thu, 22 Apr 2021 09:43:59 -0700
Message-ID: <CAOY2WoyMyqjGSWf1JD7tmsBHwKgjpxL7FB3sYjFSge8fBMZv6g@mail.gmail.com>
Subject: Re: [PATCH 00/19] sched: Core Scheduling
To:     Peter Zijlstra <peterz@infradead.org>
Cc:     Joel Fernandes <joel@joelfernandes.org>,
        "Hyser,Chris" <chris.hyser@oracle.com>,
        Josh Don <joshdon@google.com>, mingo@kernel.org,
        vincent.guittot@linaro.org, valentin.schneider@arm.com,
        mgorman@suse.de, linux-kernel@vger.kernel.org, tglx@linutronix.de
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On Thu, Apr 22, 2021 at 5:37 AM Peter Zijlstra <peterz@infradead.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.
>
Hi Peter,

Is there a reason that PR_SCHED_CORE_CLEAR got removed? It's handy to
be able to clear
cookies.

Thanks,

Don

> 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.
>
> 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(-)
>