sched: replace cpumask_weight with cpumask_empty where appropriate

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In some places, kernel/sched 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>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20220210224933.379149-23-yury.norov@gmail.com

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Yury Norov 2022-02-10 14:49:06 -08:00 • committed by Peter Zijlstra

parent 3624ba7b5e

commit 1087ad4e3f

2 changed files with 2 additions and 2 deletions

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kernel/sched/core.c

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kernel/sched/topology.c

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