linux-kernel - [PATCH rcu 0/13] Tasks RCU updates for v5.16

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Message-ID: <20210915234538.GA3907674@paulmck-ThinkPad-P17-Gen-1>
Date:   Wed, 15 Sep 2021 16:45:38 -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 rcu 0/13] Tasks RCU updates for v5.16

Hello!

This series provides a number of bug fixes for RCU Tasks Trace, most
of which were uncovered in review sessions with Boqun Feng, Frederic
Weisbecker, and Neeraj Upadhyay.

1.	rcu-tasks: Wait for trc_read_check_handler() IPIs.

2.	rcu-tasks: Simplify trc_read_check_handler() atomic operations.

3.	rcu-tasks: Add trc_inspect_reader() checks for exiting critical
	section.

4.	rcu-tasks: Remove second argument of
	rcu_read_unlock_trace_special().

5.	rcu-tasks: Fix s/instruction/instructions/ typo in comment.

6.	rcu-tasks: Move RTGS_WAIT_CBS to beginning of rcu_tasks_kthread()
	loop.

7.	rcu-tasks: Fix s/rcu_add_holdout/trc_add_holdout/ typo in comment,
	courtesy of Neeraj Upadhyay.

8.	rcu-tasks: Correct firstreport usage in
	check_all_holdout_tasks_trace, courtesy of Neeraj Upadhyay.

9.	rcu-tasks: Correct comparisons for CPU numbers in
	show_stalled_task_trace, courtesy of Neeraj Upadhyay.

10.	rcu-tasks: Clarify read side section info for rcu_tasks_rude GP
	primitives, courtesy of Neeraj Upadhyay.

11.	rcu-tasks: Fix read-side primitives comment for
	call_rcu_tasks_trace, courtesy of Neeraj Upadhyay.

12.	rcu-tasks: Fix IPI failure handling in trc_wait_for_one_reader,
	courtesy of Neeraj Upadhyay.

13.	rcu-tasks: Update comments to cond_resched_tasks_rcu_qs().

						Thanx, Paul

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

 b/include/linux/rcupdate_trace.h |    5 +-
 b/kernel/rcu/tasks.h             |   14 +++++
 kernel/rcu/tasks.h               |   97 ++++++++++++++++-----------------------
 3 files changed, 57 insertions(+), 59 deletions(-)