3  *  Housekeeping management. Manage the targets for routine code that can run on
26 struct housekeeping {  struct
31 static struct housekeeping housekeeping;  argument
35 	return !!(housekeeping.flags & BIT(type));  in housekeeping_enabled()
44 		if (housekeeping.flags & BIT(type)) {  in housekeeping_any_cpu()
45 			cpu = sched_numa_find_closest(housekeeping.cpumasks[type], smp_processor_id());  in housekeeping_any_cpu()
49 			return cpumask_any_and(housekeeping.cpumasks[type], cpu_online_mask);  in housekeeping_any_cpu()
59 		if (housekeeping.flags & BIT(type))  in housekeeping_cpumask()
60 			return housekeeping.cpumasks[type];  in housekeeping_cpumask()
68 		if (housekeeping.flags & BIT(type))  in housekeeping_affine()
69 			set_cpus_allowed_ptr(t, housekeeping.cpumasks[type]);  in housekeeping_affine()
76 		if (housekeeping.flags & BIT(type))  in housekeeping_test_cpu()
77 			return cpumask_test_cpu(cpu, housekeeping.cpumasks[type]);  in housekeeping_test_cpu()
86 	if (!housekeeping.flags)  in housekeeping_init()
91 	if (housekeeping.flags & HK_FLAG_TICK)  in housekeeping_init()
94 	for_each_set_bit(type, &housekeeping.flags, HK_TYPE_MAX) {  in housekeeping_init()
95 		/* We need at least one CPU to handle housekeeping work */  in housekeeping_init()
96 		WARN_ON_ONCE(cpumask_empty(housekeeping.cpumasks[type]));  in housekeeping_init()
104 	alloc_bootmem_cpumask_var(&housekeeping.cpumasks[type]);  in housekeeping_setup_type()
105 	cpumask_copy(housekeeping.cpumasks[type],  in housekeeping_setup_type()
115 	if ((flags & HK_FLAG_TICK) && !(housekeeping.flags & HK_FLAG_TICK)) {  in housekeeping_setup()
117 			pr_warn("Housekeeping: nohz unsupported."  in housekeeping_setup()
125 		pr_warn("Housekeeping: nohz_full= or isolcpus= incorrect CPU range\n");  in housekeeping_setup()
137 		if (!housekeeping.flags) {  in housekeeping_setup()
138 			pr_warn("Housekeeping: must include one present CPU, "  in housekeeping_setup()
146 	if (!housekeeping.flags) {  in housekeeping_setup()
155 		unsigned long iter_flags = flags & housekeeping.flags;  in housekeeping_setup()
159 					   housekeeping.cpumasks[type])) {  in housekeeping_setup()
160 				pr_warn("Housekeeping: nohz_full= must match isolcpus=\n");  in housekeeping_setup()
165 		iter_flags = flags & ~housekeeping.flags;  in housekeeping_setup()
171 	if ((flags & HK_FLAG_TICK) && !(housekeeping.flags & HK_FLAG_TICK))  in housekeeping_setup()
174 	housekeeping.flags |= flags;  in housekeeping_setup()