| Date | Tue, 3 Aug 2021 09:00:21 -0700 | From | "Paul E. McKenney" <> | Subject | Re: [PATCH 31/38] rcu: Replace deprecated CPU-hotplug functions. |
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On Tue, Aug 03, 2021 at 04:16:14PM +0200, Sebastian Andrzej Siewior wrote: > 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>
I have queued this one and 35/38 (rcutorture) for v5.16. If you would prefer to send them some other route, please let me know and:
Acked-by: Paul E. McKenney <paulmck@kernel.org>
> --- > kernel/rcu/tree.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c > index 51f24ecd94b26..f116ce58f4e68 100644 > --- a/kernel/rcu/tree.c > +++ b/kernel/rcu/tree.c > @@ -4050,7 +4050,7 @@ 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. > @@ -4081,7 +4081,7 @@ 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 > -- > 2.32.0 >
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