-static DEFINE_PER_CPU(struct kmem_cache_cpu *, kmem_cache_cpu_free);
-static DECLARE_BITMAP(kmem_cach_cpu_free_init_once, CONFIG_NR_CPUS);
-
-static struct kmem_cache_cpu *alloc_kmem_cache_cpu(struct kmem_cache *s,
- int cpu, gfp_t flags)
-{
- struct kmem_cache_cpu *c = per_cpu(kmem_cache_cpu_free, cpu);
-
- if (c)
- per_cpu(kmem_cache_cpu_free, cpu) =
- (void *)c->freelist;
- else {
- /* Table overflow: So allocate ourselves */
- c = kmalloc_node(
- ALIGN(sizeof(struct kmem_cache_cpu), cache_line_size()),
- flags, cpu_to_node(cpu));
- if (!c)
- return NULL;
- }
-
- init_kmem_cache_cpu(s, c);
- return c;
-}
-
-static void free_kmem_cache_cpu(struct kmem_cache_cpu *c, int cpu)
-{
- if (c < per_cpu(kmem_cache_cpu, cpu) ||
- c > per_cpu(kmem_cache_cpu, cpu) + NR_KMEM_CACHE_CPU) {
- kfree(c);
- return;
- }
- c->freelist = (void *)per_cpu(kmem_cache_cpu_free, cpu);
- per_cpu(kmem_cache_cpu_free, cpu) = c;
-}
-
-static void free_kmem_cache_cpus(struct kmem_cache *s)
-{
- int cpu;
-
- for_each_online_cpu(cpu) {
- struct kmem_cache_cpu *c = get_cpu_slab(s, cpu);
-
- if (c) {
- s->cpu_slab[cpu] = NULL;
- free_kmem_cache_cpu(c, cpu);
- }
- }
-}
-
-static int alloc_kmem_cache_cpus(struct kmem_cache *s, gfp_t flags)
-{
- int cpu;
-
- for_each_online_cpu(cpu) {
- struct kmem_cache_cpu *c = get_cpu_slab(s, cpu);
-
- if (c)
- continue;
-
- c = alloc_kmem_cache_cpu(s, cpu, flags);
- if (!c) {
- free_kmem_cache_cpus(s);
- return 0;
- }
- s->cpu_slab[cpu] = c;
- }
- return 1;
-}
-
-/*
- * Initialize the per cpu array.
- */
-static void init_alloc_cpu_cpu(int cpu)
-{
- int i;
-
- if (cpumask_test_cpu(cpu, to_cpumask(kmem_cach_cpu_free_init_once)))
- return;
-
- for (i = NR_KMEM_CACHE_CPU - 1; i >= 0; i--)
- free_kmem_cache_cpu(&per_cpu(kmem_cache_cpu, cpu)[i], cpu);
-
- cpumask_set_cpu(cpu, to_cpumask(kmem_cach_cpu_free_init_once));
-}
-
-static void __init init_alloc_cpu(void)