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arch/alpha: replace cpumask_weight with cpumask_empty where appropriate

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common_shutdown_1() 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>
This commit is contained in:
Yury Norov 2022-01-23 10:38:44 -08:00
parent 8f51558e80
commit 71c1a517e3
1 changed files with 1 additions and 1 deletions
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2
arch/alpha/kernel/process.c
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@ -125,7 +125,7 @@ common_shutdown_1(void *generic_ptr)
/* Wait for the secondaries to halt. */
set_cpu_present(boot_cpuid, false);
set_cpu_possible(boot_cpuid, false);
while (cpumask_weight(cpu_present_mask))
while (!cpumask_empty(cpu_present_mask))
barrier();
#endif