From 6a67368c36e2c0c2578ba62f6264ab739af08cce Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Thu, 10 Jan 2013 19:14:19 +0000 Subject: [PATCH] slab: Rename nodelists to node Have a common naming between both slab caches for future changes. Acked-by: Glauber Costa Signed-off-by: Christoph Lameter Signed-off-by: Pekka Enberg --- include/linux/slab_def.h | 2 +- mm/slab.c | 135 +++++++++++++++++++-------------------- 2 files changed, 68 insertions(+), 69 deletions(-) diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h index 8b5b2f6b36d3..4ff50e8d1a2c 100644 --- a/include/linux/slab_def.h +++ b/include/linux/slab_def.h @@ -95,7 +95,7 @@ struct kmem_cache { * pointer for each node since "nodelists" uses the remainder of * available pointers. */ - struct kmem_cache_node **nodelists; + struct kmem_cache_node **node; struct array_cache *array[NR_CPUS + MAX_NUMNODES]; /* * Do not add fields after array[] diff --git a/mm/slab.c b/mm/slab.c index 7c0da4c86973..3416f4c544b3 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -347,7 +347,7 @@ static void kmem_list3_init(struct kmem_cache_node *parent) #define MAKE_LIST(cachep, listp, slab, nodeid) \ do { \ INIT_LIST_HEAD(listp); \ - list_splice(&(cachep->nodelists[nodeid]->slab), listp); \ + list_splice(&(cachep->node[nodeid]->slab), listp); \ } while (0) #define MAKE_ALL_LISTS(cachep, ptr, nodeid) \ @@ -549,7 +549,7 @@ static void slab_set_lock_classes(struct kmem_cache *cachep, struct kmem_cache_node *l3; int r; - l3 = cachep->nodelists[q]; + l3 = cachep->node[q]; if (!l3) return; @@ -597,7 +597,7 @@ static void init_node_lock_keys(int q) if (!cache) continue; - l3 = cache->nodelists[q]; + l3 = cache->node[q]; if (!l3 || OFF_SLAB(cache)) continue; @@ -608,8 +608,7 @@ static void init_node_lock_keys(int q) static void on_slab_lock_classes_node(struct kmem_cache *cachep, int q) { - - if (!cachep->nodelists[q]) + if (!cachep->node[q]) return; slab_set_lock_classes(cachep, &on_slab_l3_key, @@ -900,7 +899,7 @@ static inline bool is_slab_pfmemalloc(struct slab *slabp) static void recheck_pfmemalloc_active(struct kmem_cache *cachep, struct array_cache *ac) { - struct kmem_cache_node *l3 = cachep->nodelists[numa_mem_id()]; + struct kmem_cache_node *l3 = cachep->node[numa_mem_id()]; struct slab *slabp; unsigned long flags; @@ -955,7 +954,7 @@ static void *__ac_get_obj(struct kmem_cache *cachep, struct array_cache *ac, * If there are empty slabs on the slabs_free list and we are * being forced to refill the cache, mark this one !pfmemalloc. */ - l3 = cachep->nodelists[numa_mem_id()]; + l3 = cachep->node[numa_mem_id()]; if (!list_empty(&l3->slabs_free) && force_refill) { struct slab *slabp = virt_to_slab(objp); ClearPageSlabPfmemalloc(virt_to_head_page(slabp->s_mem)); @@ -1105,7 +1104,7 @@ static void free_alien_cache(struct array_cache **ac_ptr) static void __drain_alien_cache(struct kmem_cache *cachep, struct array_cache *ac, int node) { - struct kmem_cache_node *rl3 = cachep->nodelists[node]; + struct kmem_cache_node *rl3 = cachep->node[node]; if (ac->avail) { spin_lock(&rl3->list_lock); @@ -1174,7 +1173,7 @@ static inline int cache_free_alien(struct kmem_cache *cachep, void *objp) if (likely(slabp->nodeid == node)) return 0; - l3 = cachep->nodelists[node]; + l3 = cachep->node[node]; STATS_INC_NODEFREES(cachep); if (l3->alien && l3->alien[nodeid]) { alien = l3->alien[nodeid]; @@ -1186,24 +1185,24 @@ static inline int cache_free_alien(struct kmem_cache *cachep, void *objp) ac_put_obj(cachep, alien, objp); spin_unlock(&alien->lock); } else { - spin_lock(&(cachep->nodelists[nodeid])->list_lock); + spin_lock(&(cachep->node[nodeid])->list_lock); free_block(cachep, &objp, 1, nodeid); - spin_unlock(&(cachep->nodelists[nodeid])->list_lock); + spin_unlock(&(cachep->node[nodeid])->list_lock); } return 1; } #endif /* - * Allocates and initializes nodelists for a node on each slab cache, used for + * Allocates and initializes node for a node on each slab cache, used for * either memory or cpu hotplug. If memory is being hot-added, the kmem_list3 * will be allocated off-node since memory is not yet online for the new node. - * When hotplugging memory or a cpu, existing nodelists are not replaced if + * When hotplugging memory or a cpu, existing node are not replaced if * already in use. * * Must hold slab_mutex. */ -static int init_cache_nodelists_node(int node) +static int init_cache_node_node(int node) { struct kmem_cache *cachep; struct kmem_cache_node *l3; @@ -1215,7 +1214,7 @@ static int init_cache_nodelists_node(int node) * begin anything. Make sure some other cpu on this * node has not already allocated this */ - if (!cachep->nodelists[node]) { + if (!cachep->node[node]) { l3 = kmalloc_node(memsize, GFP_KERNEL, node); if (!l3) return -ENOMEM; @@ -1228,14 +1227,14 @@ static int init_cache_nodelists_node(int node) * go. slab_mutex is sufficient * protection here. */ - cachep->nodelists[node] = l3; + cachep->node[node] = l3; } - spin_lock_irq(&cachep->nodelists[node]->list_lock); - cachep->nodelists[node]->free_limit = + spin_lock_irq(&cachep->node[node]->list_lock); + cachep->node[node]->free_limit = (1 + nr_cpus_node(node)) * cachep->batchcount + cachep->num; - spin_unlock_irq(&cachep->nodelists[node]->list_lock); + spin_unlock_irq(&cachep->node[node]->list_lock); } return 0; } @@ -1255,7 +1254,7 @@ static void __cpuinit cpuup_canceled(long cpu) /* cpu is dead; no one can alloc from it. */ nc = cachep->array[cpu]; cachep->array[cpu] = NULL; - l3 = cachep->nodelists[node]; + l3 = cachep->node[node]; if (!l3) goto free_array_cache; @@ -1298,7 +1297,7 @@ free_array_cache: * shrink each nodelist to its limit. */ list_for_each_entry(cachep, &slab_caches, list) { - l3 = cachep->nodelists[node]; + l3 = cachep->node[node]; if (!l3) continue; drain_freelist(cachep, l3, l3->free_objects); @@ -1318,7 +1317,7 @@ static int __cpuinit cpuup_prepare(long cpu) * kmalloc_node allows us to add the slab to the right * kmem_list3 and not this cpu's kmem_list3 */ - err = init_cache_nodelists_node(node); + err = init_cache_node_node(node); if (err < 0) goto bad; @@ -1353,7 +1352,7 @@ static int __cpuinit cpuup_prepare(long cpu) } } cachep->array[cpu] = nc; - l3 = cachep->nodelists[node]; + l3 = cachep->node[node]; BUG_ON(!l3); spin_lock_irq(&l3->list_lock); @@ -1456,7 +1455,7 @@ static struct notifier_block __cpuinitdata cpucache_notifier = { * * Must hold slab_mutex. */ -static int __meminit drain_cache_nodelists_node(int node) +static int __meminit drain_cache_node_node(int node) { struct kmem_cache *cachep; int ret = 0; @@ -1464,7 +1463,7 @@ static int __meminit drain_cache_nodelists_node(int node) list_for_each_entry(cachep, &slab_caches, list) { struct kmem_cache_node *l3; - l3 = cachep->nodelists[node]; + l3 = cachep->node[node]; if (!l3) continue; @@ -1493,12 +1492,12 @@ static int __meminit slab_memory_callback(struct notifier_block *self, switch (action) { case MEM_GOING_ONLINE: mutex_lock(&slab_mutex); - ret = init_cache_nodelists_node(nid); + ret = init_cache_node_node(nid); mutex_unlock(&slab_mutex); break; case MEM_GOING_OFFLINE: mutex_lock(&slab_mutex); - ret = drain_cache_nodelists_node(nid); + ret = drain_cache_node_node(nid); mutex_unlock(&slab_mutex); break; case MEM_ONLINE: @@ -1530,7 +1529,7 @@ static void __init init_list(struct kmem_cache *cachep, struct kmem_cache_node * spin_lock_init(&ptr->list_lock); MAKE_ALL_LISTS(cachep, ptr, nodeid); - cachep->nodelists[nodeid] = ptr; + cachep->node[nodeid] = ptr; } /* @@ -1542,8 +1541,8 @@ static void __init set_up_list3s(struct kmem_cache *cachep, int index) int node; for_each_online_node(node) { - cachep->nodelists[node] = &initkmem_list3[index + node]; - cachep->nodelists[node]->next_reap = jiffies + + cachep->node[node] = &initkmem_list3[index + node]; + cachep->node[node]->next_reap = jiffies + REAPTIMEOUT_LIST3 + ((unsigned long)cachep) % REAPTIMEOUT_LIST3; } @@ -1551,11 +1550,11 @@ static void __init set_up_list3s(struct kmem_cache *cachep, int index) /* * The memory after the last cpu cache pointer is used for the - * the nodelists pointer. + * the node pointer. */ -static void setup_nodelists_pointer(struct kmem_cache *cachep) +static void setup_node_pointer(struct kmem_cache *cachep) { - cachep->nodelists = (struct kmem_cache_node **)&cachep->array[nr_cpu_ids]; + cachep->node = (struct kmem_cache_node **)&cachep->array[nr_cpu_ids]; } /* @@ -1567,7 +1566,7 @@ void __init kmem_cache_init(void) int i; kmem_cache = &kmem_cache_boot; - setup_nodelists_pointer(kmem_cache); + setup_node_pointer(kmem_cache); if (num_possible_nodes() == 1) use_alien_caches = 0; @@ -1756,7 +1755,7 @@ void __init kmem_cache_init_late(void) #ifdef CONFIG_NUMA /* * Register a memory hotplug callback that initializes and frees - * nodelists. + * node. */ hotplug_memory_notifier(slab_memory_callback, SLAB_CALLBACK_PRI); #endif @@ -1801,7 +1800,7 @@ slab_out_of_memory(struct kmem_cache *cachep, gfp_t gfpflags, int nodeid) unsigned long active_objs = 0, num_objs = 0, free_objects = 0; unsigned long active_slabs = 0, num_slabs = 0; - l3 = cachep->nodelists[node]; + l3 = cachep->node[node]; if (!l3) continue; @@ -2277,15 +2276,15 @@ static int __init_refok setup_cpu_cache(struct kmem_cache *cachep, gfp_t gfp) } else { int node; for_each_online_node(node) { - cachep->nodelists[node] = + cachep->node[node] = kmalloc_node(sizeof(struct kmem_cache_node), gfp, node); - BUG_ON(!cachep->nodelists[node]); - kmem_list3_init(cachep->nodelists[node]); + BUG_ON(!cachep->node[node]); + kmem_list3_init(cachep->node[node]); } } } - cachep->nodelists[numa_mem_id()]->next_reap = + cachep->node[numa_mem_id()]->next_reap = jiffies + REAPTIMEOUT_LIST3 + ((unsigned long)cachep) % REAPTIMEOUT_LIST3; @@ -2388,7 +2387,7 @@ __kmem_cache_create (struct kmem_cache *cachep, unsigned long flags) else gfp = GFP_NOWAIT; - setup_nodelists_pointer(cachep); + setup_node_pointer(cachep); #if DEBUG /* @@ -2527,7 +2526,7 @@ static void check_spinlock_acquired(struct kmem_cache *cachep) { #ifdef CONFIG_SMP check_irq_off(); - assert_spin_locked(&cachep->nodelists[numa_mem_id()]->list_lock); + assert_spin_locked(&cachep->node[numa_mem_id()]->list_lock); #endif } @@ -2535,7 +2534,7 @@ static void check_spinlock_acquired_node(struct kmem_cache *cachep, int node) { #ifdef CONFIG_SMP check_irq_off(); - assert_spin_locked(&cachep->nodelists[node]->list_lock); + assert_spin_locked(&cachep->node[node]->list_lock); #endif } @@ -2558,9 +2557,9 @@ static void do_drain(void *arg) check_irq_off(); ac = cpu_cache_get(cachep); - spin_lock(&cachep->nodelists[node]->list_lock); + spin_lock(&cachep->node[node]->list_lock); free_block(cachep, ac->entry, ac->avail, node); - spin_unlock(&cachep->nodelists[node]->list_lock); + spin_unlock(&cachep->node[node]->list_lock); ac->avail = 0; } @@ -2572,13 +2571,13 @@ static void drain_cpu_caches(struct kmem_cache *cachep) on_each_cpu(do_drain, cachep, 1); check_irq_on(); for_each_online_node(node) { - l3 = cachep->nodelists[node]; + l3 = cachep->node[node]; if (l3 && l3->alien) drain_alien_cache(cachep, l3->alien); } for_each_online_node(node) { - l3 = cachep->nodelists[node]; + l3 = cachep->node[node]; if (l3) drain_array(cachep, l3, l3->shared, 1, node); } @@ -2635,7 +2634,7 @@ static int __cache_shrink(struct kmem_cache *cachep) check_irq_on(); for_each_online_node(i) { - l3 = cachep->nodelists[i]; + l3 = cachep->node[i]; if (!l3) continue; @@ -2682,7 +2681,7 @@ int __kmem_cache_shutdown(struct kmem_cache *cachep) /* NUMA: free the list3 structures */ for_each_online_node(i) { - l3 = cachep->nodelists[i]; + l3 = cachep->node[i]; if (l3) { kfree(l3->shared); free_alien_cache(l3->alien); @@ -2879,7 +2878,7 @@ static int cache_grow(struct kmem_cache *cachep, /* Take the l3 list lock to change the colour_next on this node */ check_irq_off(); - l3 = cachep->nodelists[nodeid]; + l3 = cachep->node[nodeid]; spin_lock(&l3->list_lock); /* Get colour for the slab, and cal the next value. */ @@ -3077,7 +3076,7 @@ retry: */ batchcount = BATCHREFILL_LIMIT; } - l3 = cachep->nodelists[node]; + l3 = cachep->node[node]; BUG_ON(ac->avail > 0 || !l3); spin_lock(&l3->list_lock); @@ -3299,7 +3298,7 @@ static void *alternate_node_alloc(struct kmem_cache *cachep, gfp_t flags) /* * Fallback function if there was no memory available and no objects on a * certain node and fall back is permitted. First we scan all the - * available nodelists for available objects. If that fails then we + * available node for available objects. If that fails then we * perform an allocation without specifying a node. This allows the page * allocator to do its reclaim / fallback magic. We then insert the * slab into the proper nodelist and then allocate from it. @@ -3333,8 +3332,8 @@ retry: nid = zone_to_nid(zone); if (cpuset_zone_allowed_hardwall(zone, flags) && - cache->nodelists[nid] && - cache->nodelists[nid]->free_objects) { + cache->node[nid] && + cache->node[nid]->free_objects) { obj = ____cache_alloc_node(cache, flags | GFP_THISNODE, nid); if (obj) @@ -3394,7 +3393,7 @@ static void *____cache_alloc_node(struct kmem_cache *cachep, gfp_t flags, void *obj; int x; - l3 = cachep->nodelists[nodeid]; + l3 = cachep->node[nodeid]; BUG_ON(!l3); retry: @@ -3479,7 +3478,7 @@ slab_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid, if (nodeid == NUMA_NO_NODE) nodeid = slab_node; - if (unlikely(!cachep->nodelists[nodeid])) { + if (unlikely(!cachep->node[nodeid])) { /* Node not bootstrapped yet */ ptr = fallback_alloc(cachep, flags); goto out; @@ -3595,7 +3594,7 @@ static void free_block(struct kmem_cache *cachep, void **objpp, int nr_objects, objp = objpp[i]; slabp = virt_to_slab(objp); - l3 = cachep->nodelists[node]; + l3 = cachep->node[node]; list_del(&slabp->list); check_spinlock_acquired_node(cachep, node); check_slabp(cachep, slabp); @@ -3639,7 +3638,7 @@ static void cache_flusharray(struct kmem_cache *cachep, struct array_cache *ac) BUG_ON(!batchcount || batchcount > ac->avail); #endif check_irq_off(); - l3 = cachep->nodelists[node]; + l3 = cachep->node[node]; spin_lock(&l3->list_lock); if (l3->shared) { struct array_cache *shared_array = l3->shared; @@ -3946,7 +3945,7 @@ static int alloc_kmemlist(struct kmem_cache *cachep, gfp_t gfp) } } - l3 = cachep->nodelists[node]; + l3 = cachep->node[node]; if (l3) { struct array_cache *shared = l3->shared; @@ -3982,7 +3981,7 @@ static int alloc_kmemlist(struct kmem_cache *cachep, gfp_t gfp) l3->alien = new_alien; l3->free_limit = (1 + nr_cpus_node(node)) * cachep->batchcount + cachep->num; - cachep->nodelists[node] = l3; + cachep->node[node] = l3; } return 0; @@ -3991,13 +3990,13 @@ fail: /* Cache is not active yet. Roll back what we did */ node--; while (node >= 0) { - if (cachep->nodelists[node]) { - l3 = cachep->nodelists[node]; + if (cachep->node[node]) { + l3 = cachep->node[node]; kfree(l3->shared); free_alien_cache(l3->alien); kfree(l3); - cachep->nodelists[node] = NULL; + cachep->node[node] = NULL; } node--; } @@ -4057,9 +4056,9 @@ static int __do_tune_cpucache(struct kmem_cache *cachep, int limit, struct array_cache *ccold = new->new[i]; if (!ccold) continue; - spin_lock_irq(&cachep->nodelists[cpu_to_mem(i)]->list_lock); + spin_lock_irq(&cachep->node[cpu_to_mem(i)]->list_lock); free_block(cachep, ccold->entry, ccold->avail, cpu_to_mem(i)); - spin_unlock_irq(&cachep->nodelists[cpu_to_mem(i)]->list_lock); + spin_unlock_irq(&cachep->node[cpu_to_mem(i)]->list_lock); kfree(ccold); } kfree(new); @@ -4219,7 +4218,7 @@ static void cache_reap(struct work_struct *w) * have established with reasonable certainty that * we can do some work if the lock was obtained. */ - l3 = searchp->nodelists[node]; + l3 = searchp->node[node]; reap_alien(searchp, l3); @@ -4272,7 +4271,7 @@ void get_slabinfo(struct kmem_cache *cachep, struct slabinfo *sinfo) active_objs = 0; num_slabs = 0; for_each_online_node(node) { - l3 = cachep->nodelists[node]; + l3 = cachep->node[node]; if (!l3) continue; @@ -4497,7 +4496,7 @@ static int leaks_show(struct seq_file *m, void *p) n[1] = 0; for_each_online_node(node) { - l3 = cachep->nodelists[node]; + l3 = cachep->node[node]; if (!l3) continue; -- 2.20.1