linux-kernel - [PATCH RFC smp] Remove diagnostics and adjust config for CSD lock diagnostics

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Date:   Mon, 20 Mar 2023 17:54:39 -0700
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     linux-kernel@...r.kernel.org
Cc:     kernel-team@...a.com, rostedt@...dmis.org, jgross@...e.com,
        mingo@...nel.org, peterz@...radead.org, corbet@....net
Subject: [PATCH RFC smp] Remove diagnostics and adjust config for CSD lock
 diagnostics

Hello!

This series removes CSD-lock diagnostics that were once very useful
but which have not seen much action since.  It also adjusts Kconfig and
kernel-boot-parameter setup.

1.	locking/csd_lock: Add Kconfig option for csd_debug default.

2.	locking/csd_lock: Remove added data from CSD lock debugging.

3.	locking/csd_lock: Remove per-CPU data indirection from CSD
	lock debugging.

4.	kernel/smp: Make csdlock_debug= resettable.

						Thanx, Paul

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

 Documentation/admin-guide/kernel-parameters.txt   |   17 -
 b/Documentation/admin-guide/kernel-parameters.txt |    6 
 b/kernel/smp.c                                    |    2 
 b/lib/Kconfig.debug                               |    9 
 kernel/smp.c                                      |  260 ++--------------------
 5 files changed, 47 insertions(+), 247 deletions(-)