linux-kernel - [RESEND][PATCH v8 0/7] Preparatory changes for Proxy Execution v8

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Message-ID: <20240224001153.2584030-1-jstultz@google.com>
Date: Fri, 23 Feb 2024 16:11:40 -0800
From: John Stultz <jstultz@...gle.com>
To: LKML <linux-kernel@...r.kernel.org>
Cc: John Stultz <jstultz@...gle.com>, Joel Fernandes <joelaf@...gle.com>, 
	Qais Yousef <qyousef@...gle.com>, Ingo Molnar <mingo@...hat.com>, 
	Peter Zijlstra <peterz@...radead.org>, Juri Lelli <juri.lelli@...hat.com>, 
	Vincent Guittot <vincent.guittot@...aro.org>, Dietmar Eggemann <dietmar.eggemann@....com>, 
	Valentin Schneider <vschneid@...hat.com>, Steven Rostedt <rostedt@...dmis.org>, 
	Ben Segall <bsegall@...gle.com>, Zimuzo Ezeozue <zezeozue@...gle.com>, 
	Youssef Esmat <youssefesmat@...gle.com>, Mel Gorman <mgorman@...e.de>, 
	Daniel Bristot de Oliveira <bristot@...hat.com>, Will Deacon <will@...nel.org>, Waiman Long <longman@...hat.com>, 
	Boqun Feng <boqun.feng@...il.com>, "Paul E. McKenney" <paulmck@...nel.org>, 
	Metin Kaya <Metin.Kaya@....com>, Xuewen Yan <xuewen.yan94@...il.com>, 
	K Prateek Nayak <kprateek.nayak@....com>, Thomas Gleixner <tglx@...utronix.de>, kernel-team@...roid.com
Subject: [RESEND][PATCH v8 0/7] Preparatory changes for Proxy Execution v8

After sending out v7 of Proxy Execution, I got feedback that the
patch series was getting a bit unwieldy to review, and Qais
suggested I break out just the cleanups/preparatory components
of the patch series and submit them on their own in the hope we
can start to merge the less complex bits and discussion can focus
on the more complicated portions afterwards.

So for the v8 of this series, I only submitted those earlier
cleanup/preparatory changes:
  https://lore.kernel.org/lkml/20240210002328.4126422-1-jstultz@google.com/

After sending this out a few weeks back, I’ve not heard much, so
I wanted to resend this again.

(I did correct one detail here, which was that I had accidentally
lost the author credit to one of the patches, and I’ve fixed that
in this submission).

As before, If you are interested, the full v8 series, it can be
found here:
  https://github.com/johnstultz-work/linux-dev/commits/proxy-exec-v8-6.8-rc3
  https://github.com/johnstultz-work/linux-dev.git proxy-exec-v8-6.8-rc3

However, I’ve been focusing pretty intensely on the series to
shake out some issues with the more complicated later patches in
the series (not in what I’m submitting here), and have resolved
a number of problems I uncovered in doing wider testing (along
with lots of review feedback from Metin), so v9 and all of its
improvements will hopefully be ready to send out soon.

If you want a preview, my current WIP tree (careful, as I rebase
it frequently) is here:
  https://github.com/johnstultz-work/linux-dev/commits/proxy-exec-WIP
  https://github.com/johnstultz-work/linux-dev.git proxy-exec-WIP

Review and feedback would be greatly appreciated!

Thanks so much!
-john

Cc: Joel Fernandes <joelaf@...gle.com>
Cc: Qais Yousef <qyousef@...gle.com>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Juri Lelli <juri.lelli@...hat.com>
Cc: Vincent Guittot <vincent.guittot@...aro.org>
Cc: Dietmar Eggemann <dietmar.eggemann@....com>
Cc: Valentin Schneider <vschneid@...hat.com>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Ben Segall <bsegall@...gle.com>
Cc: Zimuzo Ezeozue <zezeozue@...gle.com>
Cc: Youssef Esmat <youssefesmat@...gle.com>
Cc: Mel Gorman <mgorman@...e.de>
Cc: Daniel Bristot de Oliveira <bristot@...hat.com>
Cc: Will Deacon <will@...nel.org>
Cc: Waiman Long <longman@...hat.com>
Cc: Boqun Feng <boqun.feng@...il.com>
Cc: "Paul E. McKenney" <paulmck@...nel.org>
Cc: Metin Kaya <Metin.Kaya@....com>
Cc: Xuewen Yan <xuewen.yan94@...il.com>
Cc: K Prateek Nayak <kprateek.nayak@....com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: kernel-team@...roid.com

Connor O'Brien (2):
  sched: Add do_push_task helper
  sched: Consolidate pick_*_task to task_is_pushable helper

John Stultz (1):
  sched: Split out __schedule() deactivate task logic into a helper

Juri Lelli (2):
  locking/mutex: Make mutex::wait_lock irq safe
  locking/mutex: Expose __mutex_owner()

Peter Zijlstra (2):
  locking/mutex: Remove wakeups from under mutex::wait_lock
  sched: Split scheduler and execution contexts

 kernel/locking/mutex.c       |  60 +++++++----------
 kernel/locking/mutex.h       |  25 +++++++
 kernel/locking/rtmutex.c     |  26 +++++---
 kernel/locking/rwbase_rt.c   |   4 +-
 kernel/locking/rwsem.c       |   4 +-
 kernel/locking/spinlock_rt.c |   3 +-
 kernel/locking/ww_mutex.h    |  49 ++++++++------
 kernel/sched/core.c          | 122 +++++++++++++++++++++--------------
 kernel/sched/deadline.c      |  53 ++++++---------
 kernel/sched/fair.c          |  18 +++---
 kernel/sched/rt.c            |  59 +++++++----------
 kernel/sched/sched.h         |  44 ++++++++++++-
 12 files changed, 268 insertions(+), 199 deletions(-)

-- 
2.44.0.rc0.258.g7320e95886-goog