linux-kernel - [PATCH rcu 00/11] Lazy Preempt changes for v6.15

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Message-Id: <20250225035516.26443-1-boqun.feng@gmail.com>
Date: Mon, 24 Feb 2025 19:55:05 -0800
From: Boqun Feng <boqun.feng@...il.com>
To: rcu@...r.kernel.org
Cc: "Paul E. McKenney" <paulmck@...nel.org>,
	Frederic Weisbecker <frederic@...nel.org>,
	Neeraj Upadhyay <neeraj.upadhyay@...nel.org>,
	Joel Fernandes <joel@...lfernandes.org>,
	Josh Triplett <josh@...htriplett.org>,	Boqun Feng <boqun.feng@...il.com>,
	Uladzislau Rezki <urezki@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Lai Jiangshan <jiangshanlai@...il.com>,
	Zqiang <qiang.zhang1211@...il.com>,	Davidlohr Bueso <dave@...olabs.net>,
	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>,
	Ben Segall <bsegall@...gle.com>,	Mel Gorman <mgorman@...e.de>,
	Valentin Schneider <vschneid@...hat.com>,
	Masami Hiramatsu <mhiramat@...nel.org>,	Shuah Khan <shuah@...nel.org>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Clark Williams <clrkwllms@...nel.org>,	linux-kernel@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org,	linux-kselftest@...r.kernel.org,
	linux-rt-devel@...ts.linux.dev,	Ankur Arora <ankur.a.arora@...cle.com>
Subject: [PATCH rcu 00/11] Lazy Preempt changes for v6.15

Hi,

Please find the upcoming changes for CONFIG_PREEMPT_LAZY in RCU. The
changes can also be found at:

	git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux.git lazypreempt.2025.02.24a

Paul & Ankur, I put patch #7 and #8 (bug fixes in rcutorture) before
patch #9 (which is the one that enables non-preemptible RCU in
preemptible kernel), because I want to avoid introduce a bug in-between
a series, appreciate it if you can double check on this. Thanks!

Regards,
Boqun

Ankur Arora (7):
  rcu: fix header guard for rcu_all_qs()
  rcu: rename PREEMPT_AUTO to PREEMPT_LAZY
  sched: update __cond_resched comment about RCU quiescent states
  rcu: handle unstable rdp in rcu_read_unlock_strict()
  rcu: handle quiescent states for PREEMPT_RCU=n, PREEMPT_COUNT=y
  osnoise: provide quiescent states
  rcu: limit PREEMPT_RCU configurations

Boqun Feng (1):
  rcutorture: Update ->extendables check for lazy preemption

Paul E. McKenney (3):
  rcutorture: Update rcutorture_one_extend_check() for lazy preemption
  rcutorture: Make scenario TREE10 build CONFIG_PREEMPT_LAZY=y
  rcutorture: Make scenario TREE07 build CONFIG_PREEMPT_LAZY=y

 include/linux/rcupdate.h                      |  2 +-
 include/linux/rcutree.h                       |  2 +-
 include/linux/srcutiny.h                      |  2 +-
 kernel/rcu/Kconfig                            |  4 +--
 kernel/rcu/rcutorture.c                       | 26 ++++++++++++---
 kernel/rcu/srcutiny.c                         | 14 ++++----
 kernel/rcu/tree_plugin.h                      | 22 ++++++++++---
 kernel/sched/core.c                           |  4 ++-
 kernel/trace/trace_osnoise.c                  | 32 +++++++++----------
 .../selftests/rcutorture/configs/rcu/TREE07   |  3 +-
 .../selftests/rcutorture/configs/rcu/TREE10   |  3 +-
 11 files changed, 73 insertions(+), 41 deletions(-)

-- 
2.39.5 (Apple Git-154)