[PATCHv2 0/3] rcu: Enhance the capability to cope with concurrent cpu offlining/onlining

[Pingfan Liu <kernelfans@gmail.com>]

[1/3], It was V1's [3/3]
[2/3], reimplement V1's [1/3], and fix the issue in
       rcutree_offline_cpu() instead of rcutree_dead_cpu()
[3/3], handling TICK_DEP_BIT_RCU when cpu offlining

V1: https://lore.kernel.org/all/20220910203622.GI4315@paulmck-ThinkPad-P17-Gen-1/T/

Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Frederic Weisbecker <frederic@kernel.org>
Cc: Neeraj Upadhyay <quic_neeraju@quicinc.com>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: "Jason A. Donenfeld" <Jason@zx2c4.com>
To: rcu@vger.kernel.org

Pingfan Liu (3):
  rcu: Keep qsmaskinitnext fresh when rcutree_online_cpu()
  rcu: Resort to cpu_dying_mask for affinity when offlining
  rcu: coordinate tick dependency during concurrent offlining

 kernel/rcu/tree.c        | 21 ++++++++++++++-------
 kernel/rcu/tree.h        |  1 +
 kernel/rcu/tree_plugin.h | 13 ++++++++++++-
 3 files changed, 27 insertions(+), 8 deletions(-)

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2.31.1