arch/x86: replace cpumask_weight with cpumask_empty where appropriate

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In some cases, arch/x86 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>
Reviewed-by: Steve Wahl <steve.wahl@hpe.com>

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Yury Norov 2022-01-23 10:38:46 -08:00

parent b6dad11d9c

commit 4aec74bccf

3 changed files with 9 additions and 9 deletions

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14

arch/x86/kernel/cpu/resctrl/rdtgroup.c

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2

arch/x86/mm/mmio-mod.c

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2

arch/x86/platform/uv/uv_nmi.c

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