linux-kernel - [PATCH tip/core/rcu 0/10] No-CBs CPU updates for v5.14

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Date:   Tue, 11 May 2021 16:02:44 -0700
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     rcu@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, kernel-team@...com, mingo@...nel.org,
        jiangshanlai@...il.com, akpm@...ux-foundation.org,
        mathieu.desnoyers@...icios.com, josh@...htriplett.org,
        tglx@...utronix.de, peterz@...radead.org, rostedt@...dmis.org,
        dhowells@...hat.com, edumazet@...gle.com, fweisbec@...il.com,
        oleg@...hat.com, joel@...lfernandes.org
Subject: [PATCH tip/core/rcu 0/10] No-CBs CPU updates for v5.14

Hello!

This series continues work towards runtime switching of CPUs between
offloaded and not, including a number of cleanups and consolidations:

1.	Use the rcuog CPU's ->nocb_timer, courtesy of Frederic Weisbecker.

2.	Revert "timer: Add timer_curr_running()", courtesy of Frederic
	Weisbecker.

3.	Directly call __wake_nocb_gp() from bypass timer, courtesy of
	Frederic Weisbecker.

4.	Allow de-offloading rdp leader, courtesy of Frederic Weisbecker.

5.	Cancel nocb_timer upon nocb_gp wakeup, courtesy of Frederic
	Weisbecker.

6.	Delete bypass_timer upon nocb_gp wakeup, courtesy of Frederic
	Weisbecker.

7.	Only cancel nocb timer if not polling, courtesy of Frederic
	Weisbecker.

8.	Prepare for fine-grained deferred wakeup, courtesy of Frederic
	Weisbecker.

9.	Unify timers, courtesy of Frederic Weisbecker.

10.	Fix various typos in comments, courtesy of Ingo Molnar.

						Thanx, Paul

------------------------------------------------------------------------

 b/include/linux/timer.h                                           |    2 
 b/include/trace/events/rcu.h                                      |    1 
 b/kernel/rcu/srcutree.c                                           |    4 
 b/kernel/rcu/sync.c                                               |    4 
 b/kernel/rcu/tasks.h                                              |    8 
 b/kernel/rcu/tree.c                                               |    2 
 b/kernel/rcu/tree.h                                               |    1 
 b/kernel/rcu/tree_plugin.h                                        |  140 +++++-----
 b/kernel/time/timer.c                                             |   14 -
 b/tools/testing/selftests/rcutorture/formal/srcu-cbmc/src/locks.h |    2 
 kernel/rcu/tree.c                                                 |    4 
 kernel/rcu/tree.h                                                 |   10 
 kernel/rcu/tree_plugin.h                                          |  140 ++++------
 13 files changed, 160 insertions(+), 172 deletions(-)