kernel/sched/core.c

2487 		return cpu_active(cpu) && task_cpu_possible(cpu, p);
3445 	if (!cpu_active(arg->src_cpu) || !cpu_active(arg->dst_cpu))
3495 	if (!cpu_active(arg.src_cpu) || !cpu_active(arg.dst_cpu))
3538  * A few notes on cpu_active vs cpu_online:
3540  *  - cpu_active must be a subset of cpu_online
3547  *  - on CPU-down we clear cpu_active() to mask the sched domains and
3993 	if (!cpu_active(cpu))
5535 		if (unlikely(!cpu_active(dest_cpu)))
9465  * This is enabled below SCHED_AP_ACTIVE; when !cpu_active(), but only
9614  * Update cpusets according to cpu_active mask.  If cpusets are