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
28 #define per_cpu_cacheinfo_idx(cpu, idx)		\  argument
29 				(per_cpu_cacheinfo(cpu) + (idx))
34 struct cpu_cacheinfo *get_cpu_cacheinfo(unsigned int cpu)  in get_cpu_cacheinfo()  argument
36 	return ci_cacheinfo(cpu);  in get_cpu_cacheinfo()
57 bool last_level_cache_is_valid(unsigned int cpu)  in last_level_cache_is_valid()  argument
61 	if (!cache_leaves(cpu))  in last_level_cache_is_valid()
64 	llc = per_cpu_cacheinfo_idx(cpu, cache_leaves(cpu) - 1);  in last_level_cache_is_valid()
203 static int cache_setup_of_node(unsigned int cpu)  in cache_setup_of_node()  argument
208 	struct device_node *np __free(device_node) = of_cpu_device_node_get(cpu);  in cache_setup_of_node()
210 		pr_err("Failed to find cpu%d device node\n", cpu);  in cache_setup_of_node()
218 	while (index < cache_leaves(cpu)) {  in cache_setup_of_node()
219 		this_leaf = per_cpu_cacheinfo_idx(cpu, index);  in cache_setup_of_node()
231 	if (index != cache_leaves(cpu)) /* not all OF nodes populated */  in cache_setup_of_node()
277 int init_of_cache_level(unsigned int cpu)  in init_of_cache_level()  argument
279 	struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);  in init_of_cache_level()
280 	struct device_node *np __free(device_node) = of_cpu_device_node_get(cpu);  in init_of_cache_level()
315 static inline int cache_setup_of_node(unsigned int cpu) { return 0; }  in cache_setup_of_node()  argument
316 int init_of_cache_level(unsigned int cpu) { return 0; }  in init_of_cache_level()  argument
319 int __weak cache_setup_acpi(unsigned int cpu)  in cache_setup_acpi()  argument
326 static int cache_setup_properties(unsigned int cpu)  in cache_setup_properties()  argument
331 		ret = cache_setup_of_node(cpu);  in cache_setup_properties()
333 		ret = cache_setup_acpi(cpu);  in cache_setup_properties()
342 static int cache_shared_cpu_map_setup(unsigned int cpu)  in cache_shared_cpu_map_setup()  argument
344 	struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);  in cache_shared_cpu_map_setup()
357 	if (!last_level_cache_is_valid(cpu) && !use_arch_info) {  in cache_shared_cpu_map_setup()
358 		ret = cache_setup_properties(cpu);  in cache_shared_cpu_map_setup()
363 	for (index = 0; index < cache_leaves(cpu); index++) {  in cache_shared_cpu_map_setup()
366 		this_leaf = per_cpu_cacheinfo_idx(cpu, index);  in cache_shared_cpu_map_setup()
368 		cpumask_set_cpu(cpu, &this_leaf->shared_cpu_map);  in cache_shared_cpu_map_setup()
372 			if (i == cpu || !sib_cpu_ci->info_list)  in cache_shared_cpu_map_setup()
387 					cpumask_set_cpu(cpu, &sib_leaf->shared_cpu_map);  in cache_shared_cpu_map_setup()
403 static void cache_shared_cpu_map_remove(unsigned int cpu)  in cache_shared_cpu_map_remove()  argument
405 	struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);  in cache_shared_cpu_map_remove()
409 	for (index = 0; index < cache_leaves(cpu); index++) {  in cache_shared_cpu_map_remove()
410 		this_leaf = per_cpu_cacheinfo_idx(cpu, index);  in cache_shared_cpu_map_remove()
415 			if (sibling == cpu || !sib_cpu_ci->info_list)  in cache_shared_cpu_map_remove()
431 					cpumask_clear_cpu(cpu, &sib_leaf->shared_cpu_map);  in cache_shared_cpu_map_remove()
443 static void free_cache_attributes(unsigned int cpu)  in free_cache_attributes()  argument
445 	if (!per_cpu_cacheinfo(cpu))  in free_cache_attributes()
448 	cache_shared_cpu_map_remove(cpu);  in free_cache_attributes()
451 int __weak early_cache_level(unsigned int cpu)  in early_cache_level()  argument
456 int __weak init_cache_level(unsigned int cpu)  in init_cache_level()  argument
461 int __weak populate_cache_leaves(unsigned int cpu)  in populate_cache_leaves()  argument
467 int allocate_cache_info(int cpu)  in allocate_cache_info()  argument
469 	per_cpu_cacheinfo(cpu) = kcalloc(cache_leaves(cpu),  in allocate_cache_info()
471 	if (!per_cpu_cacheinfo(cpu)) {  in allocate_cache_info()
472 		cache_leaves(cpu) = 0;  in allocate_cache_info()
479 int fetch_cache_info(unsigned int cpu)  in fetch_cache_info()  argument
481 	struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);  in fetch_cache_info()
486 		ret = init_of_cache_level(cpu);  in fetch_cache_info()
488 		ret = acpi_get_cache_info(cpu, &levels, &split_levels);  in fetch_cache_info()
501 	if (ret || !cache_leaves(cpu)) {  in fetch_cache_info()
502 		ret = early_cache_level(cpu);  in fetch_cache_info()
506 		if (!cache_leaves(cpu))  in fetch_cache_info()
512 	return allocate_cache_info(cpu);  in fetch_cache_info()
515 static inline int init_level_allocate_ci(unsigned int cpu)  in init_level_allocate_ci()  argument
517 	unsigned int early_leaves = cache_leaves(cpu);  in init_level_allocate_ci()
529 	if (per_cpu_cacheinfo(cpu) && !ci_cacheinfo(cpu)->early_ci_levels)  in init_level_allocate_ci()
532 	if (init_cache_level(cpu) || !cache_leaves(cpu))  in init_level_allocate_ci()
540 	ci_cacheinfo(cpu)->early_ci_levels = false;  in init_level_allocate_ci()
542 	if (cache_leaves(cpu) <= early_leaves)  in init_level_allocate_ci()
545 	kfree(per_cpu_cacheinfo(cpu));  in init_level_allocate_ci()
546 	return allocate_cache_info(cpu);  in init_level_allocate_ci()
549 int detect_cache_attributes(unsigned int cpu)  in detect_cache_attributes()  argument
553 	ret = init_level_allocate_ci(cpu);  in detect_cache_attributes()
561 	if (!last_level_cache_is_valid(cpu)) {  in detect_cache_attributes()
566 		ret = populate_cache_leaves(cpu);  in detect_cache_attributes()
576 	ret = cache_shared_cpu_map_setup(cpu);  in detect_cache_attributes()
578 		pr_warn("Unable to detect cache hierarchy for CPU %d\n", cpu);  in detect_cache_attributes()
585 	free_cache_attributes(cpu);  in detect_cache_attributes()
591 #define per_cpu_cache_dev(cpu)	(per_cpu(ci_cache_dev, cpu))  argument
597 #define per_cpu_index_dev(cpu)	(per_cpu(ci_index_dev, cpu))  argument
598 #define per_cache_index_dev(cpu, idx)	((per_cpu_index_dev(cpu))[idx])  argument
807 static void cpu_cache_sysfs_exit(unsigned int cpu)  in cpu_cache_sysfs_exit()  argument
812 	if (per_cpu_index_dev(cpu)) {  in cpu_cache_sysfs_exit()
813 		for (i = 0; i < cache_leaves(cpu); i++) {  in cpu_cache_sysfs_exit()
814 			ci_dev = per_cache_index_dev(cpu, i);  in cpu_cache_sysfs_exit()
819 		kfree(per_cpu_index_dev(cpu));  in cpu_cache_sysfs_exit()
820 		per_cpu_index_dev(cpu) = NULL;  in cpu_cache_sysfs_exit()
822 	device_unregister(per_cpu_cache_dev(cpu));  in cpu_cache_sysfs_exit()
823 	per_cpu_cache_dev(cpu) = NULL;  in cpu_cache_sysfs_exit()
826 static int cpu_cache_sysfs_init(unsigned int cpu)  in cpu_cache_sysfs_init()  argument
828 	struct device *dev = get_cpu_device(cpu);  in cpu_cache_sysfs_init()
830 	if (per_cpu_cacheinfo(cpu) == NULL)  in cpu_cache_sysfs_init()
833 	per_cpu_cache_dev(cpu) = cpu_device_create(dev, NULL, NULL, "cache");  in cpu_cache_sysfs_init()
834 	if (IS_ERR(per_cpu_cache_dev(cpu)))  in cpu_cache_sysfs_init()
835 		return PTR_ERR(per_cpu_cache_dev(cpu));  in cpu_cache_sysfs_init()
838 	per_cpu_index_dev(cpu) = kcalloc(cache_leaves(cpu),  in cpu_cache_sysfs_init()
840 	if (unlikely(per_cpu_index_dev(cpu) == NULL))  in cpu_cache_sysfs_init()
846 	cpu_cache_sysfs_exit(cpu);  in cpu_cache_sysfs_init()
850 static int cache_add_dev(unsigned int cpu)  in cache_add_dev()  argument
858 	rc = cpu_cache_sysfs_init(cpu);  in cache_add_dev()
862 	parent = per_cpu_cache_dev(cpu);  in cache_add_dev()
863 	for (i = 0; i < cache_leaves(cpu); i++) {  in cache_add_dev()
864 		this_leaf = per_cpu_cacheinfo_idx(cpu, i);  in cache_add_dev()
876 		per_cache_index_dev(cpu, i) = ci_dev;  in cache_add_dev()
878 	cpumask_set_cpu(cpu, &cache_dev_map);  in cache_add_dev()
882 	cpu_cache_sysfs_exit(cpu);  in cache_add_dev()
886 static unsigned int cpu_map_shared_cache(bool online, unsigned int cpu,  in cpu_map_shared_cache()  argument
892 	if (!last_level_cache_is_valid(cpu))  in cpu_map_shared_cache()
895 	llc = per_cpu_cacheinfo_idx(cpu, cache_leaves(cpu) - 1);  in cpu_map_shared_cache()
907 		if (sibling == cpu || !last_level_cache_is_valid(sibling))  in cpu_map_shared_cache()
928 static void update_per_cpu_data_slice_size_cpu(unsigned int cpu)  in update_per_cpu_data_slice_size_cpu()  argument
934 	if (!last_level_cache_is_valid(cpu))  in update_per_cpu_data_slice_size_cpu()
937 	ci = ci_cacheinfo(cpu);  in update_per_cpu_data_slice_size_cpu()
938 	llc = per_cpu_cacheinfo_idx(cpu, cache_leaves(cpu) - 1);  in update_per_cpu_data_slice_size_cpu()
948 static void update_per_cpu_data_slice_size(bool cpu_online, unsigned int cpu,  in update_per_cpu_data_slice_size()  argument
954 		if (!cpu_online && icpu == cpu)  in update_per_cpu_data_slice_size()
961 static int cacheinfo_cpu_online(unsigned int cpu)  in cacheinfo_cpu_online()  argument
963 	int rc = detect_cache_attributes(cpu);  in cacheinfo_cpu_online()
968 	rc = cache_add_dev(cpu);  in cacheinfo_cpu_online()
971 	if (cpu_map_shared_cache(true, cpu, &cpu_map))  in cacheinfo_cpu_online()
972 		update_per_cpu_data_slice_size(true, cpu, cpu_map);  in cacheinfo_cpu_online()
975 	free_cache_attributes(cpu);  in cacheinfo_cpu_online()
979 static int cacheinfo_cpu_pre_down(unsigned int cpu)  in cacheinfo_cpu_pre_down()  argument
984 	nr_shared = cpu_map_shared_cache(false, cpu, &cpu_map);  in cacheinfo_cpu_pre_down()
985 	if (cpumask_test_and_clear_cpu(cpu, &cache_dev_map))  in cacheinfo_cpu_pre_down()
986 		cpu_cache_sysfs_exit(cpu);  in cacheinfo_cpu_pre_down()
988 	free_cache_attributes(cpu);  in cacheinfo_cpu_pre_down()
990 		update_per_cpu_data_slice_size(false, cpu, cpu_map);  in cacheinfo_cpu_pre_down()