[PATCH 0/3] timers & RCU: Fix TREE03 stalls

Frederic Weisbecker
2023-12-18T23:19:23Z

5c0930ccaad5 ("hrtimers: Push pending hrtimers away from outgoing CPU earlier")
has introduced an issue with RCU. This is a proposal to solve the
situation after realizing that fixing that on the timers side wouldn't
be pretty to say the least.

Oh and the last patch is absolutely irrelevant to the issue...

Frederic Weisbecker (3):
hrtimer: Report offline hrtimer enqueue
rcu: Defer RCU kthreads wakeup when CPU is dying
rcu/exp: Remove full barrier upon main thread wakeup

include/linux/hrtimer.h | 3 ++-
kernel/rcu/tree.c | 34 +++++++++++++++++++++++++++++++++-
kernel/rcu/tree_exp.h | 8 +++-----
kernel/time/hrtimer.c | 3 +++
4 files changed, 41 insertions(+), 7 deletions(-)

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2.42.1