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    SubjectRe: [PATCH RFC smp] Remove diagnostics and adjust config for CSD lock diagnostics
    On Mon, Mar 20, 2023 at 05:54:39PM -0700, Paul E. McKenney wrote:
    > 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(-)

    Yay!! How do you want to route these, should I take them through tip?

    What about the rest of the thing? Your commits seem to suggest it's
    still actually used -- why? Are there still more virt bugs?

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