X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=mm%2Fslab.c;h=e49f8f46f46d6878dba427dae10fc9b5fb153a9f;hb=7908a9e5fc3f9a679b1777ed231a03636c068446;hp=4e61449d7946658b3283ce01ca97cb05fdd8314b;hpb=f3d8b53a3abbfd0b74fa5dfaa690870d9619fad9;p=safe%2Fjmp%2Flinux-2.6 diff --git a/mm/slab.c b/mm/slab.c index 4e61449..e49f8f4 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -115,6 +115,7 @@ #include #include #include +#include #include #include @@ -144,30 +145,6 @@ #define BYTES_PER_WORD sizeof(void *) #define REDZONE_ALIGN max(BYTES_PER_WORD, __alignof__(unsigned long long)) -#ifndef ARCH_KMALLOC_MINALIGN -/* - * Enforce a minimum alignment for the kmalloc caches. - * Usually, the kmalloc caches are cache_line_size() aligned, except when - * DEBUG and FORCED_DEBUG are enabled, then they are BYTES_PER_WORD aligned. - * Some archs want to perform DMA into kmalloc caches and need a guaranteed - * alignment larger than the alignment of a 64-bit integer. - * ARCH_KMALLOC_MINALIGN allows that. - * Note that increasing this value may disable some debug features. - */ -#define ARCH_KMALLOC_MINALIGN __alignof__(unsigned long long) -#endif - -#ifndef ARCH_SLAB_MINALIGN -/* - * Enforce a minimum alignment for all caches. - * Intended for archs that get misalignment faults even for BYTES_PER_WORD - * aligned buffers. Includes ARCH_KMALLOC_MINALIGN. - * If possible: Do not enable this flag for CONFIG_DEBUG_SLAB, it disables - * some debug features. - */ -#define ARCH_SLAB_MINALIGN 0 -#endif - #ifndef ARCH_KMALLOC_FLAGS #define ARCH_KMALLOC_FLAGS SLAB_HWCACHE_ALIGN #endif @@ -490,7 +467,7 @@ static void **dbg_userword(struct kmem_cache *cachep, void *objp) #endif -#ifdef CONFIG_KMEMTRACE +#ifdef CONFIG_TRACING size_t slab_buffer_size(struct kmem_cache *cachep) { return cachep->buffer_size; @@ -604,6 +581,26 @@ static struct kmem_cache cache_cache = { #define BAD_ALIEN_MAGIC 0x01020304ul +/* + * chicken and egg problem: delay the per-cpu array allocation + * until the general caches are up. + */ +static enum { + NONE, + PARTIAL_AC, + PARTIAL_L3, + EARLY, + FULL +} g_cpucache_up; + +/* + * used by boot code to determine if it can use slab based allocator + */ +int slab_is_available(void) +{ + return g_cpucache_up >= EARLY; +} + #ifdef CONFIG_LOCKDEP /* @@ -620,40 +617,52 @@ static struct kmem_cache cache_cache = { static struct lock_class_key on_slab_l3_key; static struct lock_class_key on_slab_alc_key; -static inline void init_lock_keys(void) - +static void init_node_lock_keys(int q) { - int q; struct cache_sizes *s = malloc_sizes; - while (s->cs_size != ULONG_MAX) { - for_each_node(q) { - struct array_cache **alc; - int r; - struct kmem_list3 *l3 = s->cs_cachep->nodelists[q]; - if (!l3 || OFF_SLAB(s->cs_cachep)) - continue; - lockdep_set_class(&l3->list_lock, &on_slab_l3_key); - alc = l3->alien; - /* - * FIXME: This check for BAD_ALIEN_MAGIC - * should go away when common slab code is taught to - * work even without alien caches. - * Currently, non NUMA code returns BAD_ALIEN_MAGIC - * for alloc_alien_cache, - */ - if (!alc || (unsigned long)alc == BAD_ALIEN_MAGIC) - continue; - for_each_node(r) { - if (alc[r]) - lockdep_set_class(&alc[r]->lock, - &on_slab_alc_key); - } + if (g_cpucache_up != FULL) + return; + + for (s = malloc_sizes; s->cs_size != ULONG_MAX; s++) { + struct array_cache **alc; + struct kmem_list3 *l3; + int r; + + l3 = s->cs_cachep->nodelists[q]; + if (!l3 || OFF_SLAB(s->cs_cachep)) + continue; + lockdep_set_class(&l3->list_lock, &on_slab_l3_key); + alc = l3->alien; + /* + * FIXME: This check for BAD_ALIEN_MAGIC + * should go away when common slab code is taught to + * work even without alien caches. + * Currently, non NUMA code returns BAD_ALIEN_MAGIC + * for alloc_alien_cache, + */ + if (!alc || (unsigned long)alc == BAD_ALIEN_MAGIC) + continue; + for_each_node(r) { + if (alc[r]) + lockdep_set_class(&alc[r]->lock, + &on_slab_alc_key); } - s++; } } + +static inline void init_lock_keys(void) +{ + int node; + + for_each_node(node) + init_node_lock_keys(node); +} #else +static void init_node_lock_keys(int q) +{ +} + static inline void init_lock_keys(void) { } @@ -665,27 +674,7 @@ static inline void init_lock_keys(void) static DEFINE_MUTEX(cache_chain_mutex); static struct list_head cache_chain; -/* - * chicken and egg problem: delay the per-cpu array allocation - * until the general caches are up. - */ -static enum { - NONE, - PARTIAL_AC, - PARTIAL_L3, - EARLY, - FULL -} g_cpucache_up; - -/* - * used by boot code to determine if it can use slab based allocator - */ -int slab_is_available(void) -{ - return g_cpucache_up >= EARLY; -} - -static DEFINE_PER_CPU(struct delayed_work, reap_work); +static DEFINE_PER_CPU(struct delayed_work, slab_reap_work); static inline struct array_cache *cpu_cache_get(struct kmem_cache *cachep) { @@ -826,27 +815,27 @@ __setup("noaliencache", noaliencache_setup); * objects freed on different nodes from which they were allocated) and the * flushing of remote pcps by calling drain_node_pages. */ -static DEFINE_PER_CPU(unsigned long, reap_node); +static DEFINE_PER_CPU(unsigned long, slab_reap_node); static void init_reap_node(int cpu) { int node; - node = next_node(cpu_to_node(cpu), node_online_map); + node = next_node(cpu_to_mem(cpu), node_online_map); if (node == MAX_NUMNODES) node = first_node(node_online_map); - per_cpu(reap_node, cpu) = node; + per_cpu(slab_reap_node, cpu) = node; } static void next_reap_node(void) { - int node = __get_cpu_var(reap_node); + int node = __get_cpu_var(slab_reap_node); node = next_node(node, node_online_map); if (unlikely(node >= MAX_NUMNODES)) node = first_node(node_online_map); - __get_cpu_var(reap_node) = node; + __get_cpu_var(slab_reap_node) = node; } #else @@ -863,7 +852,7 @@ static void next_reap_node(void) */ static void __cpuinit start_cpu_timer(int cpu) { - struct delayed_work *reap_work = &per_cpu(reap_work, cpu); + struct delayed_work *reap_work = &per_cpu(slab_reap_work, cpu); /* * When this gets called from do_initcalls via cpucache_init(), @@ -923,7 +912,6 @@ static int transfer_objects(struct array_cache *to, from->avail -= nr; to->avail += nr; - to->touched = 1; return nr; } @@ -971,13 +959,11 @@ static struct array_cache **alloc_alien_cache(int node, int limit, gfp_t gfp) if (limit > 1) limit = 12; - ac_ptr = kmalloc_node(memsize, gfp, node); + ac_ptr = kzalloc_node(memsize, gfp, node); if (ac_ptr) { for_each_node(i) { - if (i == node || !node_online(i)) { - ac_ptr[i] = NULL; + if (i == node || !node_online(i)) continue; - } ac_ptr[i] = alloc_arraycache(node, limit, 0xbaadf00d, gfp); if (!ac_ptr[i]) { for (i--; i >= 0; i--) @@ -1027,7 +1013,7 @@ static void __drain_alien_cache(struct kmem_cache *cachep, */ static void reap_alien(struct kmem_cache *cachep, struct kmem_list3 *l3) { - int node = __get_cpu_var(reap_node); + int node = __get_cpu_var(slab_reap_node); if (l3->alien) { struct array_cache *ac = l3->alien[node]; @@ -1064,7 +1050,7 @@ static inline int cache_free_alien(struct kmem_cache *cachep, void *objp) struct array_cache *alien = NULL; int node; - node = numa_node_id(); + node = numa_mem_id(); /* * Make sure we are not freeing a object from another node to the array @@ -1093,11 +1079,57 @@ static inline int cache_free_alien(struct kmem_cache *cachep, void *objp) } #endif +/* + * Allocates and initializes nodelists 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 + * already in use. + * + * Must hold cache_chain_mutex. + */ +static int init_cache_nodelists_node(int node) +{ + struct kmem_cache *cachep; + struct kmem_list3 *l3; + const int memsize = sizeof(struct kmem_list3); + + list_for_each_entry(cachep, &cache_chain, next) { + /* + * Set up the size64 kmemlist for cpu before we can + * begin anything. Make sure some other cpu on this + * node has not already allocated this + */ + if (!cachep->nodelists[node]) { + l3 = kmalloc_node(memsize, GFP_KERNEL, node); + if (!l3) + return -ENOMEM; + kmem_list3_init(l3); + l3->next_reap = jiffies + REAPTIMEOUT_LIST3 + + ((unsigned long)cachep) % REAPTIMEOUT_LIST3; + + /* + * The l3s don't come and go as CPUs come and + * go. cache_chain_mutex is sufficient + * protection here. + */ + cachep->nodelists[node] = l3; + } + + spin_lock_irq(&cachep->nodelists[node]->list_lock); + cachep->nodelists[node]->free_limit = + (1 + nr_cpus_node(node)) * + cachep->batchcount + cachep->num; + spin_unlock_irq(&cachep->nodelists[node]->list_lock); + } + return 0; +} + static void __cpuinit cpuup_canceled(long cpu) { struct kmem_cache *cachep; struct kmem_list3 *l3 = NULL; - int node = cpu_to_node(cpu); + int node = cpu_to_mem(cpu); const struct cpumask *mask = cpumask_of_node(node); list_for_each_entry(cachep, &cache_chain, next) { @@ -1120,7 +1152,7 @@ static void __cpuinit cpuup_canceled(long cpu) if (nc) free_block(cachep, nc->entry, nc->avail, node); - if (!cpus_empty(*mask)) { + if (!cpumask_empty(mask)) { spin_unlock_irq(&l3->list_lock); goto free_array_cache; } @@ -1162,8 +1194,8 @@ static int __cpuinit cpuup_prepare(long cpu) { struct kmem_cache *cachep; struct kmem_list3 *l3 = NULL; - int node = cpu_to_node(cpu); - const int memsize = sizeof(struct kmem_list3); + int node = cpu_to_mem(cpu); + int err; /* * We need to do this right in the beginning since @@ -1171,35 +1203,9 @@ 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 */ - - list_for_each_entry(cachep, &cache_chain, next) { - /* - * Set up the size64 kmemlist for cpu before we can - * begin anything. Make sure some other cpu on this - * node has not already allocated this - */ - if (!cachep->nodelists[node]) { - l3 = kmalloc_node(memsize, GFP_KERNEL, node); - if (!l3) - goto bad; - kmem_list3_init(l3); - l3->next_reap = jiffies + REAPTIMEOUT_LIST3 + - ((unsigned long)cachep) % REAPTIMEOUT_LIST3; - - /* - * The l3s don't come and go as CPUs come and - * go. cache_chain_mutex is sufficient - * protection here. - */ - cachep->nodelists[node] = l3; - } - - spin_lock_irq(&cachep->nodelists[node]->list_lock); - cachep->nodelists[node]->free_limit = - (1 + nr_cpus_node(node)) * - cachep->batchcount + cachep->num; - spin_unlock_irq(&cachep->nodelists[node]->list_lock); - } + err = init_cache_nodelists_node(node); + if (err < 0) + goto bad; /* * Now we can go ahead with allocating the shared arrays and @@ -1254,6 +1260,8 @@ static int __cpuinit cpuup_prepare(long cpu) kfree(shared); free_alien_cache(alien); } + init_node_lock_keys(node); + return 0; bad: cpuup_canceled(cpu); @@ -1286,9 +1294,9 @@ static int __cpuinit cpuup_callback(struct notifier_block *nfb, * anything expensive but will only modify reap_work * and reschedule the timer. */ - cancel_rearming_delayed_work(&per_cpu(reap_work, cpu)); + cancel_rearming_delayed_work(&per_cpu(slab_reap_work, cpu)); /* Now the cache_reaper is guaranteed to be not running. */ - per_cpu(reap_work, cpu).work.func = NULL; + per_cpu(slab_reap_work, cpu).work.func = NULL; break; case CPU_DOWN_FAILED: case CPU_DOWN_FAILED_FROZEN: @@ -1313,18 +1321,82 @@ static int __cpuinit cpuup_callback(struct notifier_block *nfb, mutex_unlock(&cache_chain_mutex); break; } - return err ? NOTIFY_BAD : NOTIFY_OK; + return notifier_from_errno(err); } static struct notifier_block __cpuinitdata cpucache_notifier = { &cpuup_callback, NULL, 0 }; +#if defined(CONFIG_NUMA) && defined(CONFIG_MEMORY_HOTPLUG) +/* + * Drains freelist for a node on each slab cache, used for memory hot-remove. + * Returns -EBUSY if all objects cannot be drained so that the node is not + * removed. + * + * Must hold cache_chain_mutex. + */ +static int __meminit drain_cache_nodelists_node(int node) +{ + struct kmem_cache *cachep; + int ret = 0; + + list_for_each_entry(cachep, &cache_chain, next) { + struct kmem_list3 *l3; + + l3 = cachep->nodelists[node]; + if (!l3) + continue; + + drain_freelist(cachep, l3, l3->free_objects); + + if (!list_empty(&l3->slabs_full) || + !list_empty(&l3->slabs_partial)) { + ret = -EBUSY; + break; + } + } + return ret; +} + +static int __meminit slab_memory_callback(struct notifier_block *self, + unsigned long action, void *arg) +{ + struct memory_notify *mnb = arg; + int ret = 0; + int nid; + + nid = mnb->status_change_nid; + if (nid < 0) + goto out; + + switch (action) { + case MEM_GOING_ONLINE: + mutex_lock(&cache_chain_mutex); + ret = init_cache_nodelists_node(nid); + mutex_unlock(&cache_chain_mutex); + break; + case MEM_GOING_OFFLINE: + mutex_lock(&cache_chain_mutex); + ret = drain_cache_nodelists_node(nid); + mutex_unlock(&cache_chain_mutex); + break; + case MEM_ONLINE: + case MEM_OFFLINE: + case MEM_CANCEL_ONLINE: + case MEM_CANCEL_OFFLINE: + break; + } +out: + return ret ? notifier_from_errno(ret) : NOTIFY_OK; +} +#endif /* CONFIG_NUMA && CONFIG_MEMORY_HOTPLUG */ + /* * swap the static kmem_list3 with kmalloced memory */ -static void init_list(struct kmem_cache *cachep, struct kmem_list3 *list, - int nodeid) +static void __init init_list(struct kmem_cache *cachep, struct kmem_list3 *list, + int nodeid) { struct kmem_list3 *ptr; @@ -1407,7 +1479,7 @@ void __init kmem_cache_init(void) * 6) Resize the head arrays of the kmalloc caches to their final sizes. */ - node = numa_node_id(); + node = numa_mem_id(); /* 1) create the cache_cache */ INIT_LIST_HEAD(&cache_chain); @@ -1569,6 +1641,14 @@ void __init kmem_cache_init_late(void) */ register_cpu_notifier(&cpucache_notifier); +#ifdef CONFIG_NUMA + /* + * Register a memory hotplug callback that initializes and frees + * nodelists. + */ + hotplug_memory_notifier(slab_memory_callback, SLAB_CALLBACK_PRI); +#endif + /* * The reap timers are started later, with a module init call: That part * of the kernel is not yet operational. @@ -2041,7 +2121,7 @@ static int __init_refok setup_cpu_cache(struct kmem_cache *cachep, gfp_t gfp) } } } - cachep->nodelists[numa_node_id()]->next_reap = + cachep->nodelists[numa_mem_id()]->next_reap = jiffies + REAPTIMEOUT_LIST3 + ((unsigned long)cachep) % REAPTIMEOUT_LIST3; @@ -2209,8 +2289,8 @@ kmem_cache_create (const char *name, size_t size, size_t align, if (ralign < align) { ralign = align; } - /* disable debug if necessary */ - if (ralign > __alignof__(unsigned long long)) + /* disable debug if not aligning with REDZONE_ALIGN */ + if (ralign & (__alignof__(unsigned long long) - 1)) flags &= ~(SLAB_RED_ZONE | SLAB_STORE_USER); /* * 4) Store it. @@ -2236,8 +2316,8 @@ kmem_cache_create (const char *name, size_t size, size_t align, */ if (flags & SLAB_RED_ZONE) { /* add space for red zone words */ - cachep->obj_offset += sizeof(unsigned long long); - size += 2 * sizeof(unsigned long long); + cachep->obj_offset += align; + size += align + sizeof(unsigned long long); } if (flags & SLAB_STORE_USER) { /* user store requires one word storage behind the end of @@ -2261,9 +2341,11 @@ kmem_cache_create (const char *name, size_t size, size_t align, /* * Determine if the slab management is 'on' or 'off' slab. * (bootstrapping cannot cope with offslab caches so don't do - * it too early on.) + * it too early on. Always use on-slab management when + * SLAB_NOLEAKTRACE to avoid recursive calls into kmemleak) */ - if ((size >= (PAGE_SIZE >> 3)) && !slab_early_init) + if ((size >= (PAGE_SIZE >> 3)) && !slab_early_init && + !(flags & SLAB_NOLEAKTRACE)) /* * Size is large, assume best to place the slab management obj * off-slab (should allow better packing of objs). @@ -2370,7 +2452,7 @@ static void check_spinlock_acquired(struct kmem_cache *cachep) { #ifdef CONFIG_SMP check_irq_off(); - assert_spin_locked(&cachep->nodelists[numa_node_id()]->list_lock); + assert_spin_locked(&cachep->nodelists[numa_mem_id()]->list_lock); #endif } @@ -2397,7 +2479,7 @@ static void do_drain(void *arg) { struct kmem_cache *cachep = arg; struct array_cache *ac; - int node = numa_node_id(); + int node = numa_mem_id(); check_irq_off(); ac = cpu_cache_get(cachep); @@ -2582,8 +2664,8 @@ static struct slab *alloc_slabmgmt(struct kmem_cache *cachep, void *objp, * kmemleak does not treat the ->s_mem pointer as a reference * to the object. Otherwise we will not report the leak. */ - kmemleak_scan_area(slabp, offsetof(struct slab, list), - sizeof(struct list_head), local_flags); + kmemleak_scan_area(&slabp->list, sizeof(struct list_head), + local_flags); if (!slabp) return NULL; } else { @@ -2930,7 +3012,7 @@ static void *cache_alloc_refill(struct kmem_cache *cachep, gfp_t flags) retry: check_irq_off(); - node = numa_node_id(); + node = numa_mem_id(); ac = cpu_cache_get(cachep); batchcount = ac->batchcount; if (!ac->touched && batchcount > BATCHREFILL_LIMIT) { @@ -2947,8 +3029,10 @@ retry: spin_lock(&l3->list_lock); /* See if we can refill from the shared array */ - if (l3->shared && transfer_objects(ac, l3->shared, batchcount)) + if (l3->shared && transfer_objects(ac, l3->shared, batchcount)) { + l3->shared->touched = 1; goto alloc_done; + } while (batchcount > 0) { struct list_head *entry; @@ -3085,7 +3169,7 @@ static bool slab_should_failslab(struct kmem_cache *cachep, gfp_t flags) if (cachep == &cache_cache) return false; - return should_failslab(obj_size(cachep), flags); + return should_failslab(obj_size(cachep), flags, cachep->flags); } static inline void *____cache_alloc(struct kmem_cache *cachep, gfp_t flags) @@ -3103,6 +3187,11 @@ static inline void *____cache_alloc(struct kmem_cache *cachep, gfp_t flags) } else { STATS_INC_ALLOCMISS(cachep); objp = cache_alloc_refill(cachep, flags); + /* + * the 'ac' may be updated by cache_alloc_refill(), + * and kmemleak_erase() requires its correct value. + */ + ac = cpu_cache_get(cachep); } /* * To avoid a false negative, if an object that is in one of the @@ -3127,11 +3216,13 @@ static void *alternate_node_alloc(struct kmem_cache *cachep, gfp_t flags) if (in_interrupt() || (flags & __GFP_THISNODE)) return NULL; - nid_alloc = nid_here = numa_node_id(); + nid_alloc = nid_here = numa_mem_id(); + get_mems_allowed(); if (cpuset_do_slab_mem_spread() && (cachep->flags & SLAB_MEM_SPREAD)) - nid_alloc = cpuset_mem_spread_node(); + nid_alloc = cpuset_slab_spread_node(); else if (current->mempolicy) nid_alloc = slab_node(current->mempolicy); + put_mems_allowed(); if (nid_alloc != nid_here) return ____cache_alloc_node(cachep, flags, nid_alloc); return NULL; @@ -3158,6 +3249,7 @@ static void *fallback_alloc(struct kmem_cache *cache, gfp_t flags) if (flags & __GFP_THISNODE) return NULL; + get_mems_allowed(); zonelist = node_zonelist(slab_node(current->mempolicy), flags); local_flags = flags & (GFP_CONSTRAINT_MASK|GFP_RECLAIM_MASK); @@ -3189,7 +3281,7 @@ retry: if (local_flags & __GFP_WAIT) local_irq_enable(); kmem_flagcheck(cache, flags); - obj = kmem_getpages(cache, local_flags, numa_node_id()); + obj = kmem_getpages(cache, local_flags, numa_mem_id()); if (local_flags & __GFP_WAIT) local_irq_disable(); if (obj) { @@ -3213,6 +3305,7 @@ retry: } } } + put_mems_allowed(); return obj; } @@ -3296,6 +3389,7 @@ __cache_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid, { unsigned long save_flags; void *ptr; + int slab_node = numa_mem_id(); flags &= gfp_allowed_mask; @@ -3307,8 +3401,8 @@ __cache_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid, cache_alloc_debugcheck_before(cachep, flags); local_irq_save(save_flags); - if (unlikely(nodeid == -1)) - nodeid = numa_node_id(); + if (nodeid == -1) + nodeid = slab_node; if (unlikely(!cachep->nodelists[nodeid])) { /* Node not bootstrapped yet */ @@ -3316,7 +3410,7 @@ __cache_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid, goto out; } - if (nodeid == numa_node_id()) { + if (nodeid == slab_node) { /* * Use the locally cached objects if possible. * However ____cache_alloc does not allow fallback @@ -3360,8 +3454,8 @@ __do_cache_alloc(struct kmem_cache *cache, gfp_t flags) * We may just have run out of memory on the local node. * ____cache_alloc_node() knows how to locate memory on other nodes */ - if (!objp) - objp = ____cache_alloc_node(cache, flags, numa_node_id()); + if (!objp) + objp = ____cache_alloc_node(cache, flags, numa_mem_id()); out: return objp; @@ -3458,7 +3552,7 @@ static void cache_flusharray(struct kmem_cache *cachep, struct array_cache *ac) { int batchcount; struct kmem_list3 *l3; - int node = numa_node_id(); + int node = numa_mem_id(); batchcount = ac->batchcount; #if DEBUG @@ -3559,7 +3653,7 @@ void *kmem_cache_alloc(struct kmem_cache *cachep, gfp_t flags) } EXPORT_SYMBOL(kmem_cache_alloc); -#ifdef CONFIG_KMEMTRACE +#ifdef CONFIG_TRACING void *kmem_cache_alloc_notrace(struct kmem_cache *cachep, gfp_t flags) { return __cache_alloc(cachep, flags, __builtin_return_address(0)); @@ -3582,21 +3676,10 @@ EXPORT_SYMBOL(kmem_cache_alloc_notrace); */ int kmem_ptr_validate(struct kmem_cache *cachep, const void *ptr) { - unsigned long addr = (unsigned long)ptr; - unsigned long min_addr = PAGE_OFFSET; - unsigned long align_mask = BYTES_PER_WORD - 1; unsigned long size = cachep->buffer_size; struct page *page; - if (unlikely(addr < min_addr)) - goto out; - if (unlikely(addr > (unsigned long)high_memory - size)) - goto out; - if (unlikely(addr & align_mask)) - goto out; - if (unlikely(!kern_addr_valid(addr))) - goto out; - if (unlikely(!kern_addr_valid(addr + size - 1))) + if (unlikely(!kern_ptr_validate(ptr, size))) goto out; page = virt_to_page(ptr); if (unlikely(!PageSlab(page))) @@ -3622,7 +3705,7 @@ void *kmem_cache_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid) } EXPORT_SYMBOL(kmem_cache_alloc_node); -#ifdef CONFIG_KMEMTRACE +#ifdef CONFIG_TRACING void *kmem_cache_alloc_node_notrace(struct kmem_cache *cachep, gfp_t flags, int nodeid) @@ -3650,7 +3733,7 @@ __do_kmalloc_node(size_t size, gfp_t flags, int node, void *caller) return ret; } -#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_KMEMTRACE) +#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_TRACING) void *__kmalloc_node(size_t size, gfp_t flags, int node) { return __do_kmalloc_node(size, flags, node, @@ -3670,7 +3753,7 @@ void *__kmalloc_node(size_t size, gfp_t flags, int node) return __do_kmalloc_node(size, flags, node, NULL); } EXPORT_SYMBOL(__kmalloc_node); -#endif /* CONFIG_DEBUG_SLAB */ +#endif /* CONFIG_DEBUG_SLAB || CONFIG_TRACING */ #endif /* CONFIG_NUMA */ /** @@ -3702,7 +3785,7 @@ static __always_inline void *__do_kmalloc(size_t size, gfp_t flags, } -#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_KMEMTRACE) +#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_TRACING) void *__kmalloc(size_t size, gfp_t flags) { return __do_kmalloc(size, flags, __builtin_return_address(0)); @@ -3903,7 +3986,7 @@ static int do_tune_cpucache(struct kmem_cache *cachep, int limit, return -ENOMEM; for_each_online_cpu(i) { - new->new[i] = alloc_arraycache(cpu_to_node(i), limit, + new->new[i] = alloc_arraycache(cpu_to_mem(i), limit, batchcount, gfp); if (!new->new[i]) { for (i--; i >= 0; i--) @@ -3925,9 +4008,9 @@ 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_node(i)]->list_lock); - free_block(cachep, ccold->entry, ccold->avail, cpu_to_node(i)); - spin_unlock_irq(&cachep->nodelists[cpu_to_node(i)]->list_lock); + spin_lock_irq(&cachep->nodelists[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); kfree(ccold); } kfree(new); @@ -4033,7 +4116,7 @@ static void cache_reap(struct work_struct *w) { struct kmem_cache *searchp; struct kmem_list3 *l3; - int node = numa_node_id(); + int node = numa_mem_id(); struct delayed_work *work = to_delayed_work(w); if (!mutex_trylock(&cache_chain_mutex)) @@ -4207,10 +4290,11 @@ static int s_show(struct seq_file *m, void *p) unsigned long node_frees = cachep->node_frees; unsigned long overflows = cachep->node_overflow; - seq_printf(m, " : globalstat %7lu %6lu %5lu %4lu \ - %4lu %4lu %4lu %4lu %4lu", allocs, high, grown, - reaped, errors, max_freeable, node_allocs, - node_frees, overflows); + seq_printf(m, " : globalstat %7lu %6lu %5lu %4lu " + "%4lu %4lu %4lu %4lu %4lu", + allocs, high, grown, + reaped, errors, max_freeable, node_allocs, + node_frees, overflows); } /* cpu stats */ {