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rcu: Mark loads from rcu_state.n_online_cpus
The rcu_state.n_online_cpus value is only ever updated by CPU-hotplug operations, which are serialized. However, this value is read locklessly. This commit therefore marks those reads. While in the area, it also adds ASSERT_EXCLUSIVE_WRITER() calls just in case parallel CPU hotplug becomes a thing. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
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Paul E. McKenney
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Uladzislau Rezki (Sony)
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Apr 15, 2024
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