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[00/11] Nocb updates for v6.12

Message ID 20240816045608.30564-1-neeraj.upadhyay@kernel.org (mailing list archive)
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Series Nocb updates for v6.12 | expand

Message

Neeraj Upadhyay Aug. 16, 2024, 4:55 a.m. UTC 
From: Neeraj Upadhyay <neeraj.upadhyay@kernel.org>

This series contains various updates and simplifications to RCU
nocb code to handle (de-)offloading of callbacks only for offline
CPUs, courtesy of Frederic Weisbecker.


Git tree: https://git.kernel.org/pub/scm/linux/kernel/git/neeraj.upadhyay/linux-rcu.git/log/?h=nocb.29.07.24a


- Neeraj

Frederic Weisbecker (11):
  rcu/nocb: Introduce RCU_NOCB_LOCKDEP_WARN()
  rcu/nocb: Move nocb field at the end of state struct
  rcu/nocb: Assert no callbacks while nocb kthread allocation fails
  rcu/nocb: Introduce nocb mutex
  rcu/nocb: (De-)offload callbacks on offline CPUs only
  rcu/nocb: Remove halfway (de-)offloading handling from bypass
  rcu/nocb: Remove halfway (de-)offloading handling from rcu_core()'s QS
    reporting
  rcu/nocb: Remove halfway (de-)offloading handling from rcu_core
  rcu/nocb: Remove SEGCBLIST_RCU_CORE
  rcu/nocb: Remove SEGCBLIST_KTHREAD_CB
  rcu/nocb: Simplify (de-)offloading state machine

 include/linux/rcu_segcblist.h |   6 +-
 include/linux/rcupdate.h      |   7 +
 kernel/rcu/rcu_segcblist.c    |  11 --
 kernel/rcu/rcu_segcblist.h    |  11 +-
 kernel/rcu/tree.c             |  45 +-----
 kernel/rcu/tree.h             |   6 +-
 kernel/rcu/tree_nocb.h        | 268 +++++++++++++---------------------
 kernel/rcu/tree_plugin.h      |   5 +-
 8 files changed, 123 insertions(+), 236 deletions(-)