From: Yury Norov Date: Sun, 23 Jan 2022 18:38:44 +0000 (-0800) Subject: arch/alpha: replace cpumask_weight with cpumask_empty where appropriate X-Git-Tag: v6.1-rc5~1137^2~21 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=71c1a517e3da992fbbafb5c0b82a87c7eafc3383;p=platform%2Fkernel%2Flinux-starfive.git arch/alpha: replace cpumask_weight with cpumask_empty where appropriate 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 --- diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c index 5f8527081da9..0d4bc60828bf 100644 --- a/arch/alpha/kernel/process.c +++ b/arch/alpha/kernel/process.c @@ -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