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rcu: Replace deprecated CPU-hotplug functions

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The functions get_online_cpus() and put_online_cpus() have been
deprecated during the CPU hotplug rework. They map directly to
cpus_read_lock() and cpus_read_unlock().

Replace deprecated CPU-hotplug functions with the official version.
The behavior remains unchanged.

Cc: "Paul E. McKenney" <paulmck@kernel.org>
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: rcu@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Sebastian Andrzej Siewior 2021-08-03 16:16:14 +02:00 committed by Paul E. McKenney
parent 521c89b3a4
commit d3dd95a885
1 changed files with 2 additions and 2 deletions
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4
kernel/rcu/tree.c
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@ -4011,7 +4011,7 @@ void rcu_barrier(void)
*/
init_completion(&rcu_state.barrier_completion);
atomic_set(&rcu_state.barrier_cpu_count, 2);
get_online_cpus();
cpus_read_lock();
/*
* Force each CPU with callbacks to register a new callback.
@ -4042,7 +4042,7 @@ void rcu_barrier(void)
rcu_state.barrier_sequence);
}
}
put_online_cpus();
cpus_read_unlock();
/*
* Now that we have an rcu_barrier_callback() callback on each