25 #define ci_cacheinfo(cpu)	(&per_cpu(ci_cpu_cacheinfo, cpu))  argument
26 #define cache_leaves(cpu)	(ci_cacheinfo(cpu)->num_leaves)  argument
27 #define per_cpu_cacheinfo(cpu)	(ci_cacheinfo(cpu)->info_list)  argument
29 struct cpu_cacheinfo *get_cpu_cacheinfo(unsigned int cpu)  in get_cpu_cacheinfo()  argument
31 	return ci_cacheinfo(cpu);  in get_cpu_cacheinfo()
156 static int cache_setup_of_node(unsigned int cpu)  in cache_setup_of_node()  argument
160 	struct device *cpu_dev = get_cpu_device(cpu);  in cache_setup_of_node()
161 	struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);  in cache_setup_of_node()
170 		pr_err("No cpu device for CPU %d\n", cpu);  in cache_setup_of_node()
175 		pr_err("Failed to find cpu%d device node\n", cpu);  in cache_setup_of_node()
179 	while (index < cache_leaves(cpu)) {  in cache_setup_of_node()
192 	if (index != cache_leaves(cpu)) /* not all OF nodes populated */  in cache_setup_of_node()
198 static inline int cache_setup_of_node(unsigned int cpu) { return 0; }  in cache_setup_of_node()  argument
211 int __weak cache_setup_acpi(unsigned int cpu)  in cache_setup_acpi()  argument
218 static int cache_shared_cpu_map_setup(unsigned int cpu)  in cache_shared_cpu_map_setup()  argument
220 	struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);  in cache_shared_cpu_map_setup()
229 		ret = cache_setup_of_node(cpu);  in cache_shared_cpu_map_setup()
231 		ret = cache_setup_acpi(cpu);  in cache_shared_cpu_map_setup()
236 	for (index = 0; index < cache_leaves(cpu); index++) {  in cache_shared_cpu_map_setup()
244 		cpumask_set_cpu(cpu, &this_leaf->shared_cpu_map);  in cache_shared_cpu_map_setup()
248 			if (i == cpu || !sib_cpu_ci->info_list)  in cache_shared_cpu_map_setup()
252 				cpumask_set_cpu(cpu, &sib_leaf->shared_cpu_map);  in cache_shared_cpu_map_setup()
264 static void cache_shared_cpu_map_remove(unsigned int cpu)  in cache_shared_cpu_map_remove()  argument
266 	struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);  in cache_shared_cpu_map_remove()
270 	for (index = 0; index < cache_leaves(cpu); index++) {  in cache_shared_cpu_map_remove()
275 			if (sibling == cpu) /* skip itself */  in cache_shared_cpu_map_remove()
283 			cpumask_clear_cpu(cpu, &sib_leaf->shared_cpu_map);  in cache_shared_cpu_map_remove()
291 static void free_cache_attributes(unsigned int cpu)  in free_cache_attributes()  argument
293 	if (!per_cpu_cacheinfo(cpu))  in free_cache_attributes()
296 	cache_shared_cpu_map_remove(cpu);  in free_cache_attributes()
298 	kfree(per_cpu_cacheinfo(cpu));  in free_cache_attributes()
299 	per_cpu_cacheinfo(cpu) = NULL;  in free_cache_attributes()
302 int __weak init_cache_level(unsigned int cpu)  in init_cache_level()  argument
307 int __weak populate_cache_leaves(unsigned int cpu)  in populate_cache_leaves()  argument
312 static int detect_cache_attributes(unsigned int cpu)  in detect_cache_attributes()  argument
316 	if (init_cache_level(cpu) || !cache_leaves(cpu))  in detect_cache_attributes()
319 	per_cpu_cacheinfo(cpu) = kcalloc(cache_leaves(cpu),  in detect_cache_attributes()
321 	if (per_cpu_cacheinfo(cpu) == NULL)  in detect_cache_attributes()
328 	ret = populate_cache_leaves(cpu);  in detect_cache_attributes()
336 	ret = cache_shared_cpu_map_setup(cpu);  in detect_cache_attributes()
338 		pr_warn("Unable to detect cache hierarchy for CPU %d\n", cpu);  in detect_cache_attributes()
345 	free_cache_attributes(cpu);  in detect_cache_attributes()
351 #define per_cpu_cache_dev(cpu)	(per_cpu(ci_cache_dev, cpu))  argument
357 #define per_cpu_index_dev(cpu)	(per_cpu(ci_index_dev, cpu))  argument
358 #define per_cache_index_dev(cpu, idx)	((per_cpu_index_dev(cpu))[idx])  argument
567 static void cpu_cache_sysfs_exit(unsigned int cpu)  in cpu_cache_sysfs_exit()  argument
572 	if (per_cpu_index_dev(cpu)) {  in cpu_cache_sysfs_exit()
573 		for (i = 0; i < cache_leaves(cpu); i++) {  in cpu_cache_sysfs_exit()
574 			ci_dev = per_cache_index_dev(cpu, i);  in cpu_cache_sysfs_exit()
579 		kfree(per_cpu_index_dev(cpu));  in cpu_cache_sysfs_exit()
580 		per_cpu_index_dev(cpu) = NULL;  in cpu_cache_sysfs_exit()
582 	device_unregister(per_cpu_cache_dev(cpu));  in cpu_cache_sysfs_exit()
583 	per_cpu_cache_dev(cpu) = NULL;  in cpu_cache_sysfs_exit()
586 static int cpu_cache_sysfs_init(unsigned int cpu)  in cpu_cache_sysfs_init()  argument
588 	struct device *dev = get_cpu_device(cpu);  in cpu_cache_sysfs_init()
590 	if (per_cpu_cacheinfo(cpu) == NULL)  in cpu_cache_sysfs_init()
593 	per_cpu_cache_dev(cpu) = cpu_device_create(dev, NULL, NULL, "cache");  in cpu_cache_sysfs_init()
594 	if (IS_ERR(per_cpu_cache_dev(cpu)))  in cpu_cache_sysfs_init()
595 		return PTR_ERR(per_cpu_cache_dev(cpu));  in cpu_cache_sysfs_init()
598 	per_cpu_index_dev(cpu) = kcalloc(cache_leaves(cpu),  in cpu_cache_sysfs_init()
600 	if (unlikely(per_cpu_index_dev(cpu) == NULL))  in cpu_cache_sysfs_init()
606 	cpu_cache_sysfs_exit(cpu);  in cpu_cache_sysfs_init()
610 static int cache_add_dev(unsigned int cpu)  in cache_add_dev()  argument
616 	struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);  in cache_add_dev()
619 	rc = cpu_cache_sysfs_init(cpu);  in cache_add_dev()
623 	parent = per_cpu_cache_dev(cpu);  in cache_add_dev()
624 	for (i = 0; i < cache_leaves(cpu); i++) {  in cache_add_dev()
637 		per_cache_index_dev(cpu, i) = ci_dev;  in cache_add_dev()
639 	cpumask_set_cpu(cpu, &cache_dev_map);  in cache_add_dev()
643 	cpu_cache_sysfs_exit(cpu);  in cache_add_dev()
647 static int cacheinfo_cpu_online(unsigned int cpu)  in cacheinfo_cpu_online()  argument
649 	int rc = detect_cache_attributes(cpu);  in cacheinfo_cpu_online()
653 	rc = cache_add_dev(cpu);  in cacheinfo_cpu_online()
655 		free_cache_attributes(cpu);  in cacheinfo_cpu_online()
659 static int cacheinfo_cpu_pre_down(unsigned int cpu)  in cacheinfo_cpu_pre_down()  argument
661 	if (cpumask_test_and_clear_cpu(cpu, &cache_dev_map))  in cacheinfo_cpu_pre_down()
662 		cpu_cache_sysfs_exit(cpu);  in cacheinfo_cpu_pre_down()
664 	free_cache_attributes(cpu);  in cacheinfo_cpu_pre_down()