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
209 	np = of_cpu_device_node_get(cpu);  in cache_setup_of_node()
211 		pr_err("Failed to find cpu%d device node\n", cpu);  in cache_setup_of_node()
222 	while (index < cache_leaves(cpu)) {  in cache_setup_of_node()
223 		this_leaf = per_cpu_cacheinfo_idx(cpu, index);  in cache_setup_of_node()
238 	if (index != cache_leaves(cpu)) /* not all OF nodes populated */  in cache_setup_of_node()
287 int init_of_cache_level(unsigned int cpu)  in init_of_cache_level()  argument
289 	struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);  in init_of_cache_level()
290 	struct device_node *np = of_cpu_device_node_get(cpu);  in init_of_cache_level()
330 static inline int cache_setup_of_node(unsigned int cpu) { return 0; }  in cache_setup_of_node()  argument
331 int init_of_cache_level(unsigned int cpu) { return 0; }  in init_of_cache_level()  argument
334 int __weak cache_setup_acpi(unsigned int cpu)  in cache_setup_acpi()  argument
341 static int cache_setup_properties(unsigned int cpu)  in cache_setup_properties()  argument
346 		ret = cache_setup_of_node(cpu);  in cache_setup_properties()
348 		ret = cache_setup_acpi(cpu);  in cache_setup_properties()
357 static int cache_shared_cpu_map_setup(unsigned int cpu)  in cache_shared_cpu_map_setup()  argument
359 	struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);  in cache_shared_cpu_map_setup()
372 	if (!last_level_cache_is_valid(cpu) && !use_arch_info) {  in cache_shared_cpu_map_setup()
373 		ret = cache_setup_properties(cpu);  in cache_shared_cpu_map_setup()
378 	for (index = 0; index < cache_leaves(cpu); index++) {  in cache_shared_cpu_map_setup()
381 		this_leaf = per_cpu_cacheinfo_idx(cpu, index);  in cache_shared_cpu_map_setup()
383 		cpumask_set_cpu(cpu, &this_leaf->shared_cpu_map);  in cache_shared_cpu_map_setup()
387 			if (i == cpu || !sib_cpu_ci->info_list)  in cache_shared_cpu_map_setup()
402 					cpumask_set_cpu(cpu, &sib_leaf->shared_cpu_map);  in cache_shared_cpu_map_setup()
418 static void cache_shared_cpu_map_remove(unsigned int cpu)  in cache_shared_cpu_map_remove()  argument
420 	struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);  in cache_shared_cpu_map_remove()
424 	for (index = 0; index < cache_leaves(cpu); index++) {  in cache_shared_cpu_map_remove()
425 		this_leaf = per_cpu_cacheinfo_idx(cpu, index);  in cache_shared_cpu_map_remove()
430 			if (sibling == cpu || !sib_cpu_ci->info_list)  in cache_shared_cpu_map_remove()
446 					cpumask_clear_cpu(cpu, &sib_leaf->shared_cpu_map);  in cache_shared_cpu_map_remove()
458 static void free_cache_attributes(unsigned int cpu)  in free_cache_attributes()  argument
460 	if (!per_cpu_cacheinfo(cpu))  in free_cache_attributes()
463 	cache_shared_cpu_map_remove(cpu);  in free_cache_attributes()
466 int __weak early_cache_level(unsigned int cpu)  in early_cache_level()  argument
471 int __weak init_cache_level(unsigned int cpu)  in init_cache_level()  argument
476 int __weak populate_cache_leaves(unsigned int cpu)  in populate_cache_leaves()  argument
482 int allocate_cache_info(int cpu)  in allocate_cache_info()  argument
484 	per_cpu_cacheinfo(cpu) = kcalloc(cache_leaves(cpu),  in allocate_cache_info()
486 	if (!per_cpu_cacheinfo(cpu)) {  in allocate_cache_info()
487 		cache_leaves(cpu) = 0;  in allocate_cache_info()
494 int fetch_cache_info(unsigned int cpu)  in fetch_cache_info()  argument
496 	struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);  in fetch_cache_info()
501 		ret = init_of_cache_level(cpu);  in fetch_cache_info()
503 		ret = acpi_get_cache_info(cpu, &levels, &split_levels);  in fetch_cache_info()
516 	if (ret || !cache_leaves(cpu)) {  in fetch_cache_info()
517 		ret = early_cache_level(cpu);  in fetch_cache_info()
521 		if (!cache_leaves(cpu))  in fetch_cache_info()
527 	return allocate_cache_info(cpu);  in fetch_cache_info()
530 static inline int init_level_allocate_ci(unsigned int cpu)  in init_level_allocate_ci()  argument
532 	unsigned int early_leaves = cache_leaves(cpu);  in init_level_allocate_ci()
544 	if (per_cpu_cacheinfo(cpu) && !ci_cacheinfo(cpu)->early_ci_levels)  in init_level_allocate_ci()
547 	if (init_cache_level(cpu) || !cache_leaves(cpu))  in init_level_allocate_ci()
555 	ci_cacheinfo(cpu)->early_ci_levels = false;  in init_level_allocate_ci()
557 	if (cache_leaves(cpu) <= early_leaves)  in init_level_allocate_ci()
560 	kfree(per_cpu_cacheinfo(cpu));  in init_level_allocate_ci()
561 	return allocate_cache_info(cpu);  in init_level_allocate_ci()
564 int detect_cache_attributes(unsigned int cpu)  in detect_cache_attributes()  argument
568 	ret = init_level_allocate_ci(cpu);  in detect_cache_attributes()
576 	if (!last_level_cache_is_valid(cpu)) {  in detect_cache_attributes()
581 		ret = populate_cache_leaves(cpu);  in detect_cache_attributes()
591 	ret = cache_shared_cpu_map_setup(cpu);  in detect_cache_attributes()
593 		pr_warn("Unable to detect cache hierarchy for CPU %d\n", cpu);  in detect_cache_attributes()
600 	free_cache_attributes(cpu);  in detect_cache_attributes()
606 #define per_cpu_cache_dev(cpu)	(per_cpu(ci_cache_dev, cpu))  argument
612 #define per_cpu_index_dev(cpu)	(per_cpu(ci_index_dev, cpu))  argument
613 #define per_cache_index_dev(cpu, idx)	((per_cpu_index_dev(cpu))[idx])  argument
822 static void cpu_cache_sysfs_exit(unsigned int cpu)  in cpu_cache_sysfs_exit()  argument
827 	if (per_cpu_index_dev(cpu)) {  in cpu_cache_sysfs_exit()
828 		for (i = 0; i < cache_leaves(cpu); i++) {  in cpu_cache_sysfs_exit()
829 			ci_dev = per_cache_index_dev(cpu, i);  in cpu_cache_sysfs_exit()
834 		kfree(per_cpu_index_dev(cpu));  in cpu_cache_sysfs_exit()
835 		per_cpu_index_dev(cpu) = NULL;  in cpu_cache_sysfs_exit()
837 	device_unregister(per_cpu_cache_dev(cpu));  in cpu_cache_sysfs_exit()
838 	per_cpu_cache_dev(cpu) = NULL;  in cpu_cache_sysfs_exit()
841 static int cpu_cache_sysfs_init(unsigned int cpu)  in cpu_cache_sysfs_init()  argument
843 	struct device *dev = get_cpu_device(cpu);  in cpu_cache_sysfs_init()
845 	if (per_cpu_cacheinfo(cpu) == NULL)  in cpu_cache_sysfs_init()
848 	per_cpu_cache_dev(cpu) = cpu_device_create(dev, NULL, NULL, "cache");  in cpu_cache_sysfs_init()
849 	if (IS_ERR(per_cpu_cache_dev(cpu)))  in cpu_cache_sysfs_init()
850 		return PTR_ERR(per_cpu_cache_dev(cpu));  in cpu_cache_sysfs_init()
853 	per_cpu_index_dev(cpu) = kcalloc(cache_leaves(cpu),  in cpu_cache_sysfs_init()
855 	if (unlikely(per_cpu_index_dev(cpu) == NULL))  in cpu_cache_sysfs_init()
861 	cpu_cache_sysfs_exit(cpu);  in cpu_cache_sysfs_init()
865 static int cache_add_dev(unsigned int cpu)  in cache_add_dev()  argument
873 	rc = cpu_cache_sysfs_init(cpu);  in cache_add_dev()
877 	parent = per_cpu_cache_dev(cpu);  in cache_add_dev()
878 	for (i = 0; i < cache_leaves(cpu); i++) {  in cache_add_dev()
879 		this_leaf = per_cpu_cacheinfo_idx(cpu, i);  in cache_add_dev()
891 		per_cache_index_dev(cpu, i) = ci_dev;  in cache_add_dev()
893 	cpumask_set_cpu(cpu, &cache_dev_map);  in cache_add_dev()
897 	cpu_cache_sysfs_exit(cpu);  in cache_add_dev()
901 static int cacheinfo_cpu_online(unsigned int cpu)  in cacheinfo_cpu_online()  argument
903 	int rc = detect_cache_attributes(cpu);  in cacheinfo_cpu_online()
907 	rc = cache_add_dev(cpu);  in cacheinfo_cpu_online()
909 		free_cache_attributes(cpu);  in cacheinfo_cpu_online()
913 static int cacheinfo_cpu_pre_down(unsigned int cpu)  in cacheinfo_cpu_pre_down()  argument
915 	if (cpumask_test_and_clear_cpu(cpu, &cache_dev_map))  in cacheinfo_cpu_pre_down()
916 		cpu_cache_sysfs_exit(cpu);  in cacheinfo_cpu_pre_down()
918 	free_cache_attributes(cpu);  in cacheinfo_cpu_pre_down()