[PATCH -next v3 0/3] rcu/nocb: Cleanup patches for next merge window

[Joel Fernandes <joelagnelf@nvidia.com>]

These are a few nocb related cleanup patches for the next merge window.

Also Frederic please object to the second patch ("Remove dead callback overload
handling") if you would like, but I think based on our discussion I have
implemented your suggestion, so it should be good.

Changes from v2:
- Dropped patch 2 "Add warning if no rcuog wake up attempt happened during
  overload" as it was not needed since we removed the dead CB overload handling.
- Replaced "Add warning to detect if overload advancement is ever useful" with
  "Remove dead callback overload handling" per Frederic's feedback - instead of
  adding a warning, just remove the dead code path entirely.

nocb rcutorture scenarios passed overnight testing on my system.

Link to v2: https://lore.kernel.org/all/20260114173154.1701056-1-joelagnelf@nvidia.com/
Link to v1: https://lore.kernel.org/all/20260101163417.1065705-1-joelagnelf@nvidia.com/

Joel Fernandes (3):
  rcu/nocb: Remove unnecessary WakeOvfIsDeferred wake path
  rcu/nocb: Remove dead callback overload handling
  rcu/nocb: Extract nocb_defer_wakeup_cancel() helper

 kernel/rcu/tree.c      |  2 +-
 kernel/rcu/tree.h      |  3 +-
 kernel/rcu/tree_nocb.h | 80 ++++++++++++++----------------------------
 3 files changed, 29 insertions(+), 56 deletions(-)

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2.34.1