rcu: Replace cpumask_weight with cpumask_empty where appropriate

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In some places, RCU code calls cpumask_weight() to check if any bit of a
given cpumask is set. We can do it more efficiently with cpumask_empty()
because cpumask_empty() stops traversing the cpumask as soon as it finds
first set bit, while cpumask_weight() counts all bits unconditionally.

Signed-off-by: Yury Norov <yury.norov@gmail.com>
Acked-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

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Yury Norov 2022-01-23 10:38:53 -08:00 • committed by Paul E. McKenney

parent e6339d3b44

commit 6a2c1d450a

2 changed files with 3 additions and 3 deletions

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4

kernel/rcu/tree_nocb.h

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2

kernel/rcu/tree_plugin.h

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