linux-kernel - Re: [PATCH rcu 0/27] Unconditionally enable SRCU

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Message-ID: <20230113001103.GA3374173@paulmck-ThinkPad-P17-Gen-1>
Date:   Thu, 12 Jan 2023 16:11:03 -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: Re: [PATCH rcu 0/27] Unconditionally enable SRCU

Hello!

This v2 series removes Kconfig "select" clauses and #ifdef directives that
are no longer necessary give that SRCU is now unconditionally enabled,
courtesy of new-age printk() requirements.  Finally, the SRCU Kconfig
option is removed entirely.

1.	arch/x86: Remove "select SRCU".

2.	drivers/base: Remove CONFIG_SRCU.

3.	drivers/cpufreq: Remove "select SRCU".

4.	drivers/dax: Remove "select SRCU".

5.	drivers/hwtracing/stm: Remove "select SRCU".

6.	drivers/md: Remove "select SRCU".

7.	drivers/net: Remove "select SRCU".

8.	drivers/pci/controller: Remove "select SRCU".

9.	fs: Remove CONFIG_SRCU.

10.	fs/btrfs: Remove "select SRCU".

11.	fs/dlm: Remove "select SRCU".

12.	fs/notify: Remove "select SRCU".

13.	fs/quota: Remove "select SRCU".

14.	init: Remove "select SRCU".

15.	kernel/notifier: Remove CONFIG_SRCU.

16.	kernel/power: Remove "select SRCU".

17.	kvm: Remove "select SRCU".

18.	mm: Remove "select SRCU".

19.	tomoyo: Remove "select SRCU".

20.	Remove CONFIG_SRCU.

Changes since v1:

o	Added ack and review tags.

o	Dropped patches taken by their maintainers.

o	Combined the KVM-related commits into a single commit, as requested
	by Sean Christopherson.  Acks received thus far are qualified by
	the corresponding architecture.

o	Added the tomoyo patch based on feedback from Nick Desaulniers.

						Thanx, Paul

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

 arch/arm64/kvm/Kconfig                                      |    1 
 arch/mips/kvm/Kconfig                                       |    1 
 arch/powerpc/kvm/Kconfig                                    |    1 
 arch/riscv/kvm/Kconfig                                      |    1 
 arch/s390/kvm/Kconfig                                       |    1 
 arch/x86/Kconfig                                            |    2 
 arch/x86/kvm/Kconfig                                        |    1 
 drivers/base/core.c                                         |   42 ------------
 drivers/cpufreq/Kconfig                                     |    1 
 drivers/dax/Kconfig                                         |    1 
 drivers/hwtracing/stm/Kconfig                               |    1 
 drivers/md/Kconfig                                          |    1 
 drivers/net/Kconfig                                         |    1 
 drivers/pci/controller/Kconfig                              |    2 
 fs/btrfs/Kconfig                                            |    1 
 fs/dlm/Kconfig                                              |    1 
 fs/locks.c                                                  |   25 -------
 fs/notify/Kconfig                                           |    1 
 fs/quota/Kconfig                                            |    1 
 init/Kconfig                                                |    1 
 kernel/notifier.c                                           |    3 
 kernel/power/Kconfig                                        |    1 
 kernel/rcu/Kconfig                                          |    3 
 mm/Kconfig                                                  |    1 
 security/tomoyo/Kconfig                                     |    1 
 tools/testing/selftests/rcutorture/doc/TREE_RCU-kconfig.txt |    4 -
 26 files changed, 1 insertion(+), 99 deletions(-)