[rcu/next,0/3] Preparatory patches borrowed from lazy rcu v5

Message

Joel Fernandes Sept. 15, 2022, 12:14 a.m. UTC

Hello,

Just sending a few patches before lazy rcu v6 can come out. That can come out
after more testing to check feasibility of ideas discussed at LPC. I will try
to get rcutop pushed as well before v6, but in the meanwhile I don't see much
reason to block these few patches for 6.1. These apply to Paul's rcu/next
branch. What do you think?

Joel Fernandes (Google) (3):
rcu/tree: Use READ_ONCE() for lockless read of rnp->qsmask
rcu: Move trace_rcu_callback() before bypassing
rcu: Fix late wakeup when flush of bypass cblist happens

kernel/rcu/tree.c      | 12 +++++++-----
kernel/rcu/tree_nocb.h | 10 ++++++++--
2 files changed, 15 insertions(+), 7 deletions(-)

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2.37.2.789.g6183377224-goog