26 #define ci_cacheinfo(cpu)	(&per_cpu(ci_cpu_cacheinfo, cpu))  argument
27 #define cache_leaves(cpu)	(ci_cacheinfo(cpu)->num_leaves)  argument
28 #define per_cpu_cacheinfo(cpu)	(ci_cacheinfo(cpu)->info_list)  argument
29 #define per_cpu_cacheinfo_idx(cpu, idx)		\  argument
30 				(per_cpu_cacheinfo(cpu) + (idx))
35 struct cpu_cacheinfo *get_cpu_cacheinfo(unsigned int cpu)  in get_cpu_cacheinfo()  argument
37 	return ci_cacheinfo(cpu);  in get_cpu_cacheinfo()
58 bool last_level_cache_is_valid(unsigned int cpu)  in last_level_cache_is_valid()  argument
62 	if (!cache_leaves(cpu) || !per_cpu_cacheinfo(cpu))  in last_level_cache_is_valid()
65 	llc = per_cpu_cacheinfo_idx(cpu, cache_leaves(cpu) - 1);  in last_level_cache_is_valid()
187 static bool match_cache_node(struct device_node *cpu,  in match_cache_node()  argument
190 	struct device_node *prev, *cache = of_find_next_cache_node(cpu);  in match_cache_node()
213 	struct device_node *cpu;  in cache_of_set_id()  local
216 	for_each_of_cpu_node(cpu) {  in cache_of_set_id()
217 		u64 id = of_get_cpu_hwid(cpu, 0);  in cache_of_set_id()
221 			of_node_put(cpu);  in cache_of_set_id()
225 		if (match_cache_node(cpu, cache_node))  in cache_of_set_id()
253 static int cache_setup_of_node(unsigned int cpu)  in cache_setup_of_node()  argument
258 	struct device_node *np __free(device_node) = of_cpu_device_node_get(cpu);  in cache_setup_of_node()
260 		pr_err("Failed to find cpu%d device node\n", cpu);  in cache_setup_of_node()
268 	while (index < cache_leaves(cpu)) {  in cache_setup_of_node()
269 		this_leaf = per_cpu_cacheinfo_idx(cpu, index);  in cache_setup_of_node()
281 	if (index != cache_leaves(cpu)) /* not all OF nodes populated */  in cache_setup_of_node()
327 int init_of_cache_level(unsigned int cpu)  in init_of_cache_level()  argument
329 	struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);  in init_of_cache_level()
330 	struct device_node *np __free(device_node) = of_cpu_device_node_get(cpu);  in init_of_cache_level()
365 static inline int cache_setup_of_node(unsigned int cpu) { return 0; }  in cache_setup_of_node()  argument
366 int init_of_cache_level(unsigned int cpu) { return 0; }  in init_of_cache_level()  argument
369 int __weak cache_setup_acpi(unsigned int cpu)  in cache_setup_acpi()  argument
376 static int cache_setup_properties(unsigned int cpu)  in cache_setup_properties()  argument
381 		ret = cache_setup_of_node(cpu);  in cache_setup_properties()
383 		ret = cache_setup_acpi(cpu);  in cache_setup_properties()
392 static int cache_shared_cpu_map_setup(unsigned int cpu)  in cache_shared_cpu_map_setup()  argument
394 	struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);  in cache_shared_cpu_map_setup()
407 	if (!last_level_cache_is_valid(cpu) && !use_arch_info) {  in cache_shared_cpu_map_setup()
408 		ret = cache_setup_properties(cpu);  in cache_shared_cpu_map_setup()
413 	for (index = 0; index < cache_leaves(cpu); index++) {  in cache_shared_cpu_map_setup()
416 		this_leaf = per_cpu_cacheinfo_idx(cpu, index);  in cache_shared_cpu_map_setup()
418 		cpumask_set_cpu(cpu, &this_leaf->shared_cpu_map);  in cache_shared_cpu_map_setup()
420 			if (i == cpu || !per_cpu_cacheinfo(i))  in cache_shared_cpu_map_setup()
435 					cpumask_set_cpu(cpu, &sib_leaf->shared_cpu_map);  in cache_shared_cpu_map_setup()
451 static void cache_shared_cpu_map_remove(unsigned int cpu)  in cache_shared_cpu_map_remove()  argument
453 	struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);  in cache_shared_cpu_map_remove()
457 	for (index = 0; index < cache_leaves(cpu); index++) {  in cache_shared_cpu_map_remove()
458 		this_leaf = per_cpu_cacheinfo_idx(cpu, index);  in cache_shared_cpu_map_remove()
460 			if (sibling == cpu || !per_cpu_cacheinfo(sibling))  in cache_shared_cpu_map_remove()
476 					cpumask_clear_cpu(cpu, &sib_leaf->shared_cpu_map);  in cache_shared_cpu_map_remove()
488 static void free_cache_attributes(unsigned int cpu)  in free_cache_attributes()  argument
490 	if (!per_cpu_cacheinfo(cpu))  in free_cache_attributes()
493 	cache_shared_cpu_map_remove(cpu);  in free_cache_attributes()
496 int __weak early_cache_level(unsigned int cpu)  in early_cache_level()  argument
501 int __weak init_cache_level(unsigned int cpu)  in init_cache_level()  argument
506 int __weak populate_cache_leaves(unsigned int cpu)  in populate_cache_leaves()  argument
511 static inline int allocate_cache_info(int cpu)  in allocate_cache_info()  argument
513 	per_cpu_cacheinfo(cpu) = kcalloc(cache_leaves(cpu), sizeof(struct cacheinfo), GFP_ATOMIC);  in allocate_cache_info()
514 	if (!per_cpu_cacheinfo(cpu)) {  in allocate_cache_info()
515 		cache_leaves(cpu) = 0;  in allocate_cache_info()
522 int fetch_cache_info(unsigned int cpu)  in fetch_cache_info()  argument
524 	struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);  in fetch_cache_info()
529 		ret = init_of_cache_level(cpu);  in fetch_cache_info()
531 		ret = acpi_get_cache_info(cpu, &levels, &split_levels);  in fetch_cache_info()
544 	if (ret || !cache_leaves(cpu)) {  in fetch_cache_info()
545 		ret = early_cache_level(cpu);  in fetch_cache_info()
549 		if (!cache_leaves(cpu))  in fetch_cache_info()
555 	return allocate_cache_info(cpu);  in fetch_cache_info()
558 static inline int init_level_allocate_ci(unsigned int cpu)  in init_level_allocate_ci()  argument
560 	unsigned int early_leaves = cache_leaves(cpu);  in init_level_allocate_ci()
572 	if (per_cpu_cacheinfo(cpu) && !ci_cacheinfo(cpu)->early_ci_levels)  in init_level_allocate_ci()
575 	if (init_cache_level(cpu) || !cache_leaves(cpu))  in init_level_allocate_ci()
583 	ci_cacheinfo(cpu)->early_ci_levels = false;  in init_level_allocate_ci()
589 	if (cache_leaves(cpu) <= early_leaves && per_cpu_cacheinfo(cpu))  in init_level_allocate_ci()
592 	kfree(per_cpu_cacheinfo(cpu));  in init_level_allocate_ci()
593 	return allocate_cache_info(cpu);  in init_level_allocate_ci()
596 int detect_cache_attributes(unsigned int cpu)  in detect_cache_attributes()  argument
600 	ret = init_level_allocate_ci(cpu);  in detect_cache_attributes()
608 	if (!last_level_cache_is_valid(cpu)) {  in detect_cache_attributes()
613 		ret = populate_cache_leaves(cpu);  in detect_cache_attributes()
623 	ret = cache_shared_cpu_map_setup(cpu);  in detect_cache_attributes()
625 		pr_warn("Unable to detect cache hierarchy for CPU %d\n", cpu);  in detect_cache_attributes()
632 	free_cache_attributes(cpu);  in detect_cache_attributes()
638 #define per_cpu_cache_dev(cpu)	(per_cpu(ci_cache_dev, cpu))  argument
644 #define per_cpu_index_dev(cpu)	(per_cpu(ci_index_dev, cpu))  argument
645 #define per_cache_index_dev(cpu, idx)	((per_cpu_index_dev(cpu))[idx])  argument
854 static void cpu_cache_sysfs_exit(unsigned int cpu)  in cpu_cache_sysfs_exit()  argument
859 	if (per_cpu_index_dev(cpu)) {  in cpu_cache_sysfs_exit()
860 		for (i = 0; i < cache_leaves(cpu); i++) {  in cpu_cache_sysfs_exit()
861 			ci_dev = per_cache_index_dev(cpu, i);  in cpu_cache_sysfs_exit()
866 		kfree(per_cpu_index_dev(cpu));  in cpu_cache_sysfs_exit()
867 		per_cpu_index_dev(cpu) = NULL;  in cpu_cache_sysfs_exit()
869 	device_unregister(per_cpu_cache_dev(cpu));  in cpu_cache_sysfs_exit()
870 	per_cpu_cache_dev(cpu) = NULL;  in cpu_cache_sysfs_exit()
873 static int cpu_cache_sysfs_init(unsigned int cpu)  in cpu_cache_sysfs_init()  argument
875 	struct device *dev = get_cpu_device(cpu);  in cpu_cache_sysfs_init()
877 	if (per_cpu_cacheinfo(cpu) == NULL)  in cpu_cache_sysfs_init()
880 	per_cpu_cache_dev(cpu) = cpu_device_create(dev, NULL, NULL, "cache");  in cpu_cache_sysfs_init()
881 	if (IS_ERR(per_cpu_cache_dev(cpu)))  in cpu_cache_sysfs_init()
882 		return PTR_ERR(per_cpu_cache_dev(cpu));  in cpu_cache_sysfs_init()
885 	per_cpu_index_dev(cpu) = kcalloc(cache_leaves(cpu),  in cpu_cache_sysfs_init()
887 	if (unlikely(per_cpu_index_dev(cpu) == NULL))  in cpu_cache_sysfs_init()
893 	cpu_cache_sysfs_exit(cpu);  in cpu_cache_sysfs_init()
897 static int cache_add_dev(unsigned int cpu)  in cache_add_dev()  argument
905 	rc = cpu_cache_sysfs_init(cpu);  in cache_add_dev()
909 	parent = per_cpu_cache_dev(cpu);  in cache_add_dev()
910 	for (i = 0; i < cache_leaves(cpu); i++) {  in cache_add_dev()
911 		this_leaf = per_cpu_cacheinfo_idx(cpu, i);  in cache_add_dev()
923 		per_cache_index_dev(cpu, i) = ci_dev;  in cache_add_dev()
925 	cpumask_set_cpu(cpu, &cache_dev_map);  in cache_add_dev()
929 	cpu_cache_sysfs_exit(cpu);  in cache_add_dev()
933 static unsigned int cpu_map_shared_cache(bool online, unsigned int cpu,  in cpu_map_shared_cache()  argument
939 	if (!last_level_cache_is_valid(cpu))  in cpu_map_shared_cache()
942 	llc = per_cpu_cacheinfo_idx(cpu, cache_leaves(cpu) - 1);  in cpu_map_shared_cache()
954 		if (sibling == cpu || !last_level_cache_is_valid(sibling))  in cpu_map_shared_cache()
975 static void update_per_cpu_data_slice_size_cpu(unsigned int cpu)  in update_per_cpu_data_slice_size_cpu()  argument
981 	if (!last_level_cache_is_valid(cpu))  in update_per_cpu_data_slice_size_cpu()
984 	ci = ci_cacheinfo(cpu);  in update_per_cpu_data_slice_size_cpu()
985 	llc = per_cpu_cacheinfo_idx(cpu, cache_leaves(cpu) - 1);  in update_per_cpu_data_slice_size_cpu()
995 static void update_per_cpu_data_slice_size(bool cpu_online, unsigned int cpu,  in update_per_cpu_data_slice_size()  argument
1001 		if (!cpu_online && icpu == cpu)  in update_per_cpu_data_slice_size()
1008 static int cacheinfo_cpu_online(unsigned int cpu)  in cacheinfo_cpu_online()  argument
1010 	int rc = detect_cache_attributes(cpu);  in cacheinfo_cpu_online()
1015 	rc = cache_add_dev(cpu);  in cacheinfo_cpu_online()
1018 	if (cpu_map_shared_cache(true, cpu, &cpu_map))  in cacheinfo_cpu_online()
1019 		update_per_cpu_data_slice_size(true, cpu, cpu_map);  in cacheinfo_cpu_online()
1022 	free_cache_attributes(cpu);  in cacheinfo_cpu_online()
1026 static int cacheinfo_cpu_pre_down(unsigned int cpu)  in cacheinfo_cpu_pre_down()  argument
1031 	nr_shared = cpu_map_shared_cache(false, cpu, &cpu_map);  in cacheinfo_cpu_pre_down()
1032 	if (cpumask_test_and_clear_cpu(cpu, &cache_dev_map))  in cacheinfo_cpu_pre_down()
1033 		cpu_cache_sysfs_exit(cpu);  in cacheinfo_cpu_pre_down()
1035 	free_cache_attributes(cpu);  in cacheinfo_cpu_pre_down()
1037 		update_per_cpu_data_slice_size(false, cpu, cpu_map);  in cacheinfo_cpu_pre_down()