powerpc/kernel/cacheinfo.c

455  * If sub-groups of threads in a core containing @cpu_id share the
463 static int get_group_id(unsigned int cpu_id, int level)
467 					     cpu_id));
470 					     cpu_id));
473 					     cpu_id));
477 static void do_subsidiary_caches(struct cache *cache, unsigned int cpu_id)
489 		group_id = get_group_id(cpu_id, level);
500 static struct cache *cache_chain_instantiate(unsigned int cpu_id)
506 	pr_debug("creating cache object(s) for CPU %i\n", cpu_id);
508 	cpu_node = of_get_cpu_node(cpu_id, NULL);
509 	WARN_ONCE(!cpu_node, "no OF node found for CPU %i\n", cpu_id);
513 	group_id = get_group_id(cpu_id, 1);
519 	do_subsidiary_caches(cpu_cache, cpu_id);
521 	cache_cpu_set(cpu_cache, cpu_id);
528 static struct cache_dir *cacheinfo_create_cache_dir(unsigned int cpu_id)
534 	dev = get_cpu_device(cpu_id);
535 	WARN_ONCE(!dev, "no dev for CPU %i\n", cpu_id);
549 	WARN_ON_ONCE(per_cpu(cache_dir_pcpu, cpu_id) != NULL);
551 	per_cpu(cache_dir_pcpu, cpu_id) = cache_dir;
810 static void cacheinfo_sysfs_populate(unsigned int cpu_id,
817 	cache_dir = cacheinfo_create_cache_dir(cpu_id);
829 void cacheinfo_cpu_online(unsigned int cpu_id)
833 	cache = cache_chain_instantiate(cpu_id);
837 	cacheinfo_sysfs_populate(cpu_id, cache);
845 static struct cache *cache_lookup_by_cpu(unsigned int cpu_id)
851 	cpu_node = of_get_cpu_node(cpu_id, NULL);
852 	WARN_ONCE(!cpu_node, "no OF node found for CPU %i\n", cpu_id);
856 	group_id = get_group_id(cpu_id, 1);
911 void cacheinfo_cpu_offline(unsigned int cpu_id)
918 	cache_dir = per_cpu(cache_dir_pcpu, cpu_id);
924 	per_cpu(cache_dir_pcpu, cpu_id) = NULL;
928 	cache = cache_lookup_by_cpu(cpu_id);
930 		cache_cpu_clear(cache, cpu_id);