Messages in this thread | | | Date | Mon, 18 Dec 2023 17:40:42 -0800 | From | "Paul E. McKenney" <> | Subject | Re: [PATCH 0/3] timers & RCU: Fix TREE03 stalls |
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On Tue, Dec 19, 2023 at 12:19:13AM +0100, Frederic Weisbecker wrote: > 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...
I pulled all three in and started testing.
That last one will need some careful review, but you knew that already. ;-)
Thanx, Paul
> 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(-) > > -- > 2.42.1 >
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