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@xxxxxxxxx> --- arch/alpha/kernel/process.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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 -- 2.32.0
