linux-kernel - [PATCH rcu 0/9] Lazy-preemption-related updates

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <df73d8ef-ef52-4f99-ac22-e2b66f0c644e@paulmck-laptop>
Date: Thu, 16 Jan 2025 12:13:20 -0800
From: "Paul E. McKenney" <paulmck@...nel.org>
To: rcu@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, kernel-team@...a.com, rostedt@...dmis.org
Subject: [PATCH rcu 0/9] Lazy-preemption-related updates

Hello!

This series makes adjustments to RCU to better handle lazy preemption:

1.	fix header guard for rcu_all_qs(), courtesy of Ankur Arora.

2.	rename PREEMPT_AUTO to PREEMPT_LAZY, courtesy of Ankur Arora.

3.	update __cond_resched comment about RCU quiescent states,
	courtesy of Ankur Arora.

4.	handle unstable rdp in rcu_read_unlock_strict(), courtesy of
	Ankur Arora.

5.	handle quiescent states for PREEMPT_RCU=n, PREEMPT_COUNT=y,
	courtesy of Ankur Arora.

6.	provide quiescent states, courtesy of Ankur Arora.

7.	limit PREEMPT_RCU configurations, courtesy of Ankur Arora.

8.	Make scenario TREE10 build CONFIG_PREEMPT_LAZY=y.

9.	Make scenario TREE07 build CONFIG_PREEMPT_LAZY=y.

						Thanx, Paul

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

 b/include/linux/rcupdate.h                              |    2 -
 b/include/linux/rcutree.h                               |    2 -
 b/include/linux/srcutiny.h                              |    2 -
 b/kernel/rcu/Kconfig                                    |    2 -
 b/kernel/rcu/srcutiny.c                                 |   14 +++----
 b/kernel/rcu/tree_plugin.h                              |   11 +++++
 b/kernel/sched/core.c                                   |    4 +-
 b/kernel/trace/trace_osnoise.c                          |   32 +++++++---------
 b/tools/testing/selftests/rcutorture/configs/rcu/TREE07 |    3 +
 b/tools/testing/selftests/rcutorture/configs/rcu/TREE10 |    3 +
 kernel/rcu/Kconfig                                      |    2 -
 kernel/rcu/tree_plugin.h                                |   11 +++--
 12 files changed, 51 insertions(+), 37 deletions(-)