mirror of
https://github.com/adulau/aha.git
synced 2024-12-27 11:16:11 +00:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6: slub: avoid leaking caches or refcounts on sysfs error slab: Fix comment on #endif slab: remove GFP_THISNODE clearing from alloc_slabmgmt() slub: Add might_sleep_if() to slab_alloc() SLUB: failslab support slub: Fix incorrect use of loose slab: Update the kmem_cache_create documentation regarding the name parameter slub: make early_kmem_cache_node_alloc void slab: unsigned slabp->inuse cannot be less than 0 slub - fix get_object_page comment SLUB: Replace __builtin_return_address(0) with _RET_IP_. SLUB: cleanup - define macros instead of hardcoded numbers
This commit is contained in:
Linus Torvalds
commit
db5e53fbf0
7 changed files with 145 additions and 122 deletions
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@ -81,4 +81,13 @@ static inline void cleanup_fault_attr_dentries(struct fault_attr *attr)
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#endif /* CONFIG_FAULT_INJECTION */
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#ifdef CONFIG_FAILSLAB
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extern bool should_failslab(size_t size, gfp_t gfpflags);
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#else
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static inline bool should_failslab(size_t size, gfp_t gfpflags)
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{
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return false;
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}
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#endif /* CONFIG_FAILSLAB */
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#endif /* _LINUX_FAULT_INJECT_H */
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@ -253,9 +253,9 @@ static inline void *kmem_cache_alloc_node(struct kmem_cache *cachep,
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* request comes from.
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*/
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#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_SLUB)
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extern void *__kmalloc_track_caller(size_t, gfp_t, void*);
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extern void *__kmalloc_track_caller(size_t, gfp_t, unsigned long);
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#define kmalloc_track_caller(size, flags) \
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__kmalloc_track_caller(size, flags, __builtin_return_address(0))
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__kmalloc_track_caller(size, flags, _RET_IP_)
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#else
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#define kmalloc_track_caller(size, flags) \
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__kmalloc(size, flags)
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@ -271,10 +271,10 @@ extern void *__kmalloc_track_caller(size_t, gfp_t, void*);
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* allocation request comes from.
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*/
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#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_SLUB)
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extern void *__kmalloc_node_track_caller(size_t, gfp_t, int, void *);
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extern void *__kmalloc_node_track_caller(size_t, gfp_t, int, unsigned long);
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#define kmalloc_node_track_caller(size, flags, node) \
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__kmalloc_node_track_caller(size, flags, node, \
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__builtin_return_address(0))
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_RET_IP_)
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#else
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#define kmalloc_node_track_caller(size, flags, node) \
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__kmalloc_node(size, flags, node)
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@ -285,7 +285,7 @@ extern void *__kmalloc_node_track_caller(size_t, gfp_t, int, void *);
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#define kmalloc_node_track_caller(size, flags, node) \
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kmalloc_track_caller(size, flags)
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#endif /* DEBUG_SLAB */
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#endif /* CONFIG_NUMA */
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/*
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* Shortcuts
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@ -730,6 +730,7 @@ config FAULT_INJECTION
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config FAILSLAB
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bool "Fault-injection capability for kmalloc"
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depends on FAULT_INJECTION
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depends on SLAB || SLUB
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help
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Provide fault-injection capability for kmalloc.
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@ -28,6 +28,7 @@ obj-$(CONFIG_SLOB) += slob.o
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obj-$(CONFIG_MMU_NOTIFIER) += mmu_notifier.o
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obj-$(CONFIG_SLAB) += slab.o
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obj-$(CONFIG_SLUB) += slub.o
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obj-$(CONFIG_FAILSLAB) += failslab.o
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obj-$(CONFIG_MEMORY_HOTPLUG) += memory_hotplug.o
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obj-$(CONFIG_FS_XIP) += filemap_xip.o
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obj-$(CONFIG_MIGRATION) += migrate.o
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59
mm/failslab.c
Normal file
59
mm/failslab.c
Normal file
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@ -0,0 +1,59 @@
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#include <linux/fault-inject.h>
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static struct {
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struct fault_attr attr;
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u32 ignore_gfp_wait;
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#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
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struct dentry *ignore_gfp_wait_file;
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#endif
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} failslab = {
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.attr = FAULT_ATTR_INITIALIZER,
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.ignore_gfp_wait = 1,
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};
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bool should_failslab(size_t size, gfp_t gfpflags)
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{
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if (gfpflags & __GFP_NOFAIL)
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return false;
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if (failslab.ignore_gfp_wait && (gfpflags & __GFP_WAIT))
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return false;
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return should_fail(&failslab.attr, size);
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}
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static int __init setup_failslab(char *str)
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{
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return setup_fault_attr(&failslab.attr, str);
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}
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__setup("failslab=", setup_failslab);
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#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
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static int __init failslab_debugfs_init(void)
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{
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mode_t mode = S_IFREG | S_IRUSR | S_IWUSR;
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struct dentry *dir;
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int err;
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err = init_fault_attr_dentries(&failslab.attr, "failslab");
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if (err)
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return err;
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dir = failslab.attr.dentries.dir;
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failslab.ignore_gfp_wait_file =
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debugfs_create_bool("ignore-gfp-wait", mode, dir,
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&failslab.ignore_gfp_wait);
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if (!failslab.ignore_gfp_wait_file) {
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err = -ENOMEM;
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debugfs_remove(failslab.ignore_gfp_wait_file);
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cleanup_fault_attr_dentries(&failslab.attr);
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}
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return err;
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}
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late_initcall(failslab_debugfs_init);
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#endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */
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89
mm/slab.c
89
mm/slab.c
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@ -2123,6 +2123,8 @@ static int __init_refok setup_cpu_cache(struct kmem_cache *cachep)
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*
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* @name must be valid until the cache is destroyed. This implies that
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* the module calling this has to destroy the cache before getting unloaded.
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* Note that kmem_cache_name() is not guaranteed to return the same pointer,
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* therefore applications must manage it themselves.
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*
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* The flags are
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*
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@ -2609,7 +2611,7 @@ static struct slab *alloc_slabmgmt(struct kmem_cache *cachep, void *objp,
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if (OFF_SLAB(cachep)) {
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/* Slab management obj is off-slab. */
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slabp = kmem_cache_alloc_node(cachep->slabp_cache,
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local_flags & ~GFP_THISNODE, nodeid);
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local_flags, nodeid);
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if (!slabp)
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return NULL;
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} else {
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@ -2997,7 +2999,7 @@ retry:
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* there must be at least one object available for
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* allocation.
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*/
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BUG_ON(slabp->inuse < 0 || slabp->inuse >= cachep->num);
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BUG_ON(slabp->inuse >= cachep->num);
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while (slabp->inuse < cachep->num && batchcount--) {
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STATS_INC_ALLOCED(cachep);
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@ -3106,79 +3108,14 @@ static void *cache_alloc_debugcheck_after(struct kmem_cache *cachep,
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#define cache_alloc_debugcheck_after(a,b,objp,d) (objp)
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#endif
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#ifdef CONFIG_FAILSLAB
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static struct failslab_attr {
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struct fault_attr attr;
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u32 ignore_gfp_wait;
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#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
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struct dentry *ignore_gfp_wait_file;
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#endif
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} failslab = {
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.attr = FAULT_ATTR_INITIALIZER,
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.ignore_gfp_wait = 1,
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};
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static int __init setup_failslab(char *str)
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{
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return setup_fault_attr(&failslab.attr, str);
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}
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__setup("failslab=", setup_failslab);
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static int should_failslab(struct kmem_cache *cachep, gfp_t flags)
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static bool slab_should_failslab(struct kmem_cache *cachep, gfp_t flags)
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{
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if (cachep == &cache_cache)
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return 0;
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if (flags & __GFP_NOFAIL)
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return 0;
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if (failslab.ignore_gfp_wait && (flags & __GFP_WAIT))
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return 0;
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return false;
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return should_fail(&failslab.attr, obj_size(cachep));
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return should_failslab(obj_size(cachep), flags);
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}
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#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
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static int __init failslab_debugfs(void)
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{
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mode_t mode = S_IFREG | S_IRUSR | S_IWUSR;
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struct dentry *dir;
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int err;
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err = init_fault_attr_dentries(&failslab.attr, "failslab");
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if (err)
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return err;
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dir = failslab.attr.dentries.dir;
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failslab.ignore_gfp_wait_file =
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debugfs_create_bool("ignore-gfp-wait", mode, dir,
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&failslab.ignore_gfp_wait);
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if (!failslab.ignore_gfp_wait_file) {
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err = -ENOMEM;
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debugfs_remove(failslab.ignore_gfp_wait_file);
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cleanup_fault_attr_dentries(&failslab.attr);
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}
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return err;
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}
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late_initcall(failslab_debugfs);
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#endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */
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#else /* CONFIG_FAILSLAB */
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static inline int should_failslab(struct kmem_cache *cachep, gfp_t flags)
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{
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return 0;
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}
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#endif /* CONFIG_FAILSLAB */
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static inline void *____cache_alloc(struct kmem_cache *cachep, gfp_t flags)
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{
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void *objp;
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@ -3381,7 +3318,7 @@ __cache_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid,
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unsigned long save_flags;
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void *ptr;
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if (should_failslab(cachep, flags))
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if (slab_should_failslab(cachep, flags))
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return NULL;
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cache_alloc_debugcheck_before(cachep, flags);
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@ -3457,7 +3394,7 @@ __cache_alloc(struct kmem_cache *cachep, gfp_t flags, void *caller)
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unsigned long save_flags;
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void *objp;
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if (should_failslab(cachep, flags))
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if (slab_should_failslab(cachep, flags))
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return NULL;
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cache_alloc_debugcheck_before(cachep, flags);
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@ -3686,9 +3623,9 @@ void *__kmalloc_node(size_t size, gfp_t flags, int node)
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EXPORT_SYMBOL(__kmalloc_node);
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void *__kmalloc_node_track_caller(size_t size, gfp_t flags,
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int node, void *caller)
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int node, unsigned long caller)
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{
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return __do_kmalloc_node(size, flags, node, caller);
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return __do_kmalloc_node(size, flags, node, (void *)caller);
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}
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EXPORT_SYMBOL(__kmalloc_node_track_caller);
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#else
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@ -3730,9 +3667,9 @@ void *__kmalloc(size_t size, gfp_t flags)
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}
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EXPORT_SYMBOL(__kmalloc);
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void *__kmalloc_track_caller(size_t size, gfp_t flags, void *caller)
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void *__kmalloc_track_caller(size_t size, gfp_t flags, unsigned long caller)
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{
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return __do_kmalloc(size, flags, caller);
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return __do_kmalloc(size, flags, (void *)caller);
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}
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EXPORT_SYMBOL(__kmalloc_track_caller);
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|
|
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98
mm/slub.c
98
mm/slub.c
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|
@ -24,6 +24,7 @@
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|||
#include <linux/kallsyms.h>
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#include <linux/memory.h>
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#include <linux/math64.h>
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#include <linux/fault-inject.h>
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/*
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* Lock order:
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|
@ -153,6 +154,10 @@
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#define ARCH_SLAB_MINALIGN __alignof__(unsigned long long)
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#endif
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||||
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#define OO_SHIFT 16
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#define OO_MASK ((1 << OO_SHIFT) - 1)
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||||
#define MAX_OBJS_PER_PAGE 65535 /* since page.objects is u16 */
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||||
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||||
/* Internal SLUB flags */
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||||
#define __OBJECT_POISON 0x80000000 /* Poison object */
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||||
#define __SYSFS_ADD_DEFERRED 0x40000000 /* Not yet visible via sysfs */
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||||
|
|
@ -178,7 +183,7 @@ static LIST_HEAD(slab_caches);
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|||
* Tracking user of a slab.
|
||||
*/
|
||||
struct track {
|
||||
void *addr; /* Called from address */
|
||||
unsigned long addr; /* Called from address */
|
||||
int cpu; /* Was running on cpu */
|
||||
int pid; /* Pid context */
|
||||
unsigned long when; /* When did the operation occur */
|
||||
|
|
@ -290,7 +295,7 @@ static inline struct kmem_cache_order_objects oo_make(int order,
|
|||
unsigned long size)
|
||||
{
|
||||
struct kmem_cache_order_objects x = {
|
||||
(order << 16) + (PAGE_SIZE << order) / size
|
||||
(order << OO_SHIFT) + (PAGE_SIZE << order) / size
|
||||
};
|
||||
|
||||
return x;
|
||||
|
|
@ -298,12 +303,12 @@ static inline struct kmem_cache_order_objects oo_make(int order,
|
|||
|
||||
static inline int oo_order(struct kmem_cache_order_objects x)
|
||||
{
|
||||
return x.x >> 16;
|
||||
return x.x >> OO_SHIFT;
|
||||
}
|
||||
|
||||
static inline int oo_objects(struct kmem_cache_order_objects x)
|
||||
{
|
||||
return x.x & ((1 << 16) - 1);
|
||||
return x.x & OO_MASK;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_SLUB_DEBUG
|
||||
|
|
@ -367,7 +372,7 @@ static struct track *get_track(struct kmem_cache *s, void *object,
|
|||
}
|
||||
|
||||
static void set_track(struct kmem_cache *s, void *object,
|
||||
enum track_item alloc, void *addr)
|
||||
enum track_item alloc, unsigned long addr)
|
||||
{
|
||||
struct track *p;
|
||||
|
||||
|
|
@ -391,8 +396,8 @@ static void init_tracking(struct kmem_cache *s, void *object)
|
|||
if (!(s->flags & SLAB_STORE_USER))
|
||||
return;
|
||||
|
||||
set_track(s, object, TRACK_FREE, NULL);
|
||||
set_track(s, object, TRACK_ALLOC, NULL);
|
||||
set_track(s, object, TRACK_FREE, 0UL);
|
||||
set_track(s, object, TRACK_ALLOC, 0UL);
|
||||
}
|
||||
|
||||
static void print_track(const char *s, struct track *t)
|
||||
|
|
@ -401,7 +406,7 @@ static void print_track(const char *s, struct track *t)
|
|||
return;
|
||||
|
||||
printk(KERN_ERR "INFO: %s in %pS age=%lu cpu=%u pid=%d\n",
|
||||
s, t->addr, jiffies - t->when, t->cpu, t->pid);
|
||||
s, (void *)t->addr, jiffies - t->when, t->cpu, t->pid);
|
||||
}
|
||||
|
||||
static void print_tracking(struct kmem_cache *s, void *object)
|
||||
|
|
@ -692,7 +697,7 @@ static int check_object(struct kmem_cache *s, struct page *page,
|
|||
if (!check_valid_pointer(s, page, get_freepointer(s, p))) {
|
||||
object_err(s, page, p, "Freepointer corrupt");
|
||||
/*
|
||||
* No choice but to zap it and thus loose the remainder
|
||||
* No choice but to zap it and thus lose the remainder
|
||||
* of the free objects in this slab. May cause
|
||||
* another error because the object count is now wrong.
|
||||
*/
|
||||
|
|
@ -764,8 +769,8 @@ static int on_freelist(struct kmem_cache *s, struct page *page, void *search)
|
|||
}
|
||||
|
||||
max_objects = (PAGE_SIZE << compound_order(page)) / s->size;
|
||||
if (max_objects > 65535)
|
||||
max_objects = 65535;
|
||||
if (max_objects > MAX_OBJS_PER_PAGE)
|
||||
max_objects = MAX_OBJS_PER_PAGE;
|
||||
|
||||
if (page->objects != max_objects) {
|
||||
slab_err(s, page, "Wrong number of objects. Found %d but "
|
||||
|
|
@ -866,7 +871,7 @@ static void setup_object_debug(struct kmem_cache *s, struct page *page,
|
|||
}
|
||||
|
||||
static int alloc_debug_processing(struct kmem_cache *s, struct page *page,
|
||||
void *object, void *addr)
|
||||
void *object, unsigned long addr)
|
||||
{
|
||||
if (!check_slab(s, page))
|
||||
goto bad;
|
||||
|
|
@ -906,7 +911,7 @@ bad:
|
|||
}
|
||||
|
||||
static int free_debug_processing(struct kmem_cache *s, struct page *page,
|
||||
void *object, void *addr)
|
||||
void *object, unsigned long addr)
|
||||
{
|
||||
if (!check_slab(s, page))
|
||||
goto fail;
|
||||
|
|
@ -1029,10 +1034,10 @@ static inline void setup_object_debug(struct kmem_cache *s,
|
|||
struct page *page, void *object) {}
|
||||
|
||||
static inline int alloc_debug_processing(struct kmem_cache *s,
|
||||
struct page *page, void *object, void *addr) { return 0; }
|
||||
struct page *page, void *object, unsigned long addr) { return 0; }
|
||||
|
||||
static inline int free_debug_processing(struct kmem_cache *s,
|
||||
struct page *page, void *object, void *addr) { return 0; }
|
||||
struct page *page, void *object, unsigned long addr) { return 0; }
|
||||
|
||||
static inline int slab_pad_check(struct kmem_cache *s, struct page *page)
|
||||
{ return 1; }
|
||||
|
|
@ -1499,8 +1504,8 @@ static inline int node_match(struct kmem_cache_cpu *c, int node)
|
|||
* we need to allocate a new slab. This is the slowest path since it involves
|
||||
* a call to the page allocator and the setup of a new slab.
|
||||
*/
|
||||
static void *__slab_alloc(struct kmem_cache *s,
|
||||
gfp_t gfpflags, int node, void *addr, struct kmem_cache_cpu *c)
|
||||
static void *__slab_alloc(struct kmem_cache *s, gfp_t gfpflags, int node,
|
||||
unsigned long addr, struct kmem_cache_cpu *c)
|
||||
{
|
||||
void **object;
|
||||
struct page *new;
|
||||
|
|
@ -1584,13 +1589,18 @@ debug:
|
|||
* Otherwise we can simply pick the next object from the lockless free list.
|
||||
*/
|
||||
static __always_inline void *slab_alloc(struct kmem_cache *s,
|
||||
gfp_t gfpflags, int node, void *addr)
|
||||
gfp_t gfpflags, int node, unsigned long addr)
|
||||
{
|
||||
void **object;
|
||||
struct kmem_cache_cpu *c;
|
||||
unsigned long flags;
|
||||
unsigned int objsize;
|
||||
|
||||
might_sleep_if(gfpflags & __GFP_WAIT);
|
||||
|
||||
if (should_failslab(s->objsize, gfpflags))
|
||||
return NULL;
|
||||
|
||||
local_irq_save(flags);
|
||||
c = get_cpu_slab(s, smp_processor_id());
|
||||
objsize = c->objsize;
|
||||
|
|
@ -1613,14 +1623,14 @@ static __always_inline void *slab_alloc(struct kmem_cache *s,
|
|||
|
||||
void *kmem_cache_alloc(struct kmem_cache *s, gfp_t gfpflags)
|
||||
{
|
||||
return slab_alloc(s, gfpflags, -1, __builtin_return_address(0));
|
||||
return slab_alloc(s, gfpflags, -1, _RET_IP_);
|
||||
}
|
||||
EXPORT_SYMBOL(kmem_cache_alloc);
|
||||
|
||||
#ifdef CONFIG_NUMA
|
||||
void *kmem_cache_alloc_node(struct kmem_cache *s, gfp_t gfpflags, int node)
|
||||
{
|
||||
return slab_alloc(s, gfpflags, node, __builtin_return_address(0));
|
||||
return slab_alloc(s, gfpflags, node, _RET_IP_);
|
||||
}
|
||||
EXPORT_SYMBOL(kmem_cache_alloc_node);
|
||||
#endif
|
||||
|
|
@ -1634,7 +1644,7 @@ EXPORT_SYMBOL(kmem_cache_alloc_node);
|
|||
* handling required then we can return immediately.
|
||||
*/
|
||||
static void __slab_free(struct kmem_cache *s, struct page *page,
|
||||
void *x, void *addr, unsigned int offset)
|
||||
void *x, unsigned long addr, unsigned int offset)
|
||||
{
|
||||
void *prior;
|
||||
void **object = (void *)x;
|
||||
|
|
@ -1704,7 +1714,7 @@ debug:
|
|||
* with all sorts of special processing.
|
||||
*/
|
||||
static __always_inline void slab_free(struct kmem_cache *s,
|
||||
struct page *page, void *x, void *addr)
|
||||
struct page *page, void *x, unsigned long addr)
|
||||
{
|
||||
void **object = (void *)x;
|
||||
struct kmem_cache_cpu *c;
|
||||
|
|
@ -1731,11 +1741,11 @@ void kmem_cache_free(struct kmem_cache *s, void *x)
|
|||
|
||||
page = virt_to_head_page(x);
|
||||
|
||||
slab_free(s, page, x, __builtin_return_address(0));
|
||||
slab_free(s, page, x, _RET_IP_);
|
||||
}
|
||||
EXPORT_SYMBOL(kmem_cache_free);
|
||||
|
||||
/* Figure out on which slab object the object resides */
|
||||
/* Figure out on which slab page the object resides */
|
||||
static struct page *get_object_page(const void *x)
|
||||
{
|
||||
struct page *page = virt_to_head_page(x);
|
||||
|
|
@ -1807,8 +1817,8 @@ static inline int slab_order(int size, int min_objects,
|
|||
int rem;
|
||||
int min_order = slub_min_order;
|
||||
|
||||
if ((PAGE_SIZE << min_order) / size > 65535)
|
||||
return get_order(size * 65535) - 1;
|
||||
if ((PAGE_SIZE << min_order) / size > MAX_OBJS_PER_PAGE)
|
||||
return get_order(size * MAX_OBJS_PER_PAGE) - 1;
|
||||
|
||||
for (order = max(min_order,
|
||||
fls(min_objects * size - 1) - PAGE_SHIFT);
|
||||
|
|
@ -2073,8 +2083,7 @@ static inline int alloc_kmem_cache_cpus(struct kmem_cache *s, gfp_t flags)
|
|||
* when allocating for the kmalloc_node_cache. This is used for bootstrapping
|
||||
* memory on a fresh node that has no slab structures yet.
|
||||
*/
|
||||
static struct kmem_cache_node *early_kmem_cache_node_alloc(gfp_t gfpflags,
|
||||
int node)
|
||||
static void early_kmem_cache_node_alloc(gfp_t gfpflags, int node)
|
||||
{
|
||||
struct page *page;
|
||||
struct kmem_cache_node *n;
|
||||
|
|
@ -2112,7 +2121,6 @@ static struct kmem_cache_node *early_kmem_cache_node_alloc(gfp_t gfpflags,
|
|||
local_irq_save(flags);
|
||||
add_partial(n, page, 0);
|
||||
local_irq_restore(flags);
|
||||
return n;
|
||||
}
|
||||
|
||||
static void free_kmem_cache_nodes(struct kmem_cache *s)
|
||||
|
|
@ -2144,8 +2152,7 @@ static int init_kmem_cache_nodes(struct kmem_cache *s, gfp_t gfpflags)
|
|||
n = &s->local_node;
|
||||
else {
|
||||
if (slab_state == DOWN) {
|
||||
n = early_kmem_cache_node_alloc(gfpflags,
|
||||
node);
|
||||
early_kmem_cache_node_alloc(gfpflags, node);
|
||||
continue;
|
||||
}
|
||||
n = kmem_cache_alloc_node(kmalloc_caches,
|
||||
|
|
@ -2659,7 +2666,7 @@ void *__kmalloc(size_t size, gfp_t flags)
|
|||
if (unlikely(ZERO_OR_NULL_PTR(s)))
|
||||
return s;
|
||||
|
||||
return slab_alloc(s, flags, -1, __builtin_return_address(0));
|
||||
return slab_alloc(s, flags, -1, _RET_IP_);
|
||||
}
|
||||
EXPORT_SYMBOL(__kmalloc);
|
||||
|
||||
|
|
@ -2687,7 +2694,7 @@ void *__kmalloc_node(size_t size, gfp_t flags, int node)
|
|||
if (unlikely(ZERO_OR_NULL_PTR(s)))
|
||||
return s;
|
||||
|
||||
return slab_alloc(s, flags, node, __builtin_return_address(0));
|
||||
return slab_alloc(s, flags, node, _RET_IP_);
|
||||
}
|
||||
EXPORT_SYMBOL(__kmalloc_node);
|
||||
#endif
|
||||
|
|
@ -2744,7 +2751,7 @@ void kfree(const void *x)
|
|||
put_page(page);
|
||||
return;
|
||||
}
|
||||
slab_free(page->slab, page, object, __builtin_return_address(0));
|
||||
slab_free(page->slab, page, object, _RET_IP_);
|
||||
}
|
||||
EXPORT_SYMBOL(kfree);
|
||||
|
||||
|
|
@ -3123,8 +3130,12 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size,
|
|||
s->inuse = max_t(int, s->inuse, ALIGN(size, sizeof(void *)));
|
||||
up_write(&slub_lock);
|
||||
|
||||
if (sysfs_slab_alias(s, name))
|
||||
if (sysfs_slab_alias(s, name)) {
|
||||
down_write(&slub_lock);
|
||||
s->refcount--;
|
||||
up_write(&slub_lock);
|
||||
goto err;
|
||||
}
|
||||
return s;
|
||||
}
|
||||
|
||||
|
|
@ -3134,8 +3145,13 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size,
|
|||
size, align, flags, ctor)) {
|
||||
list_add(&s->list, &slab_caches);
|
||||
up_write(&slub_lock);
|
||||
if (sysfs_slab_add(s))
|
||||
if (sysfs_slab_add(s)) {
|
||||
down_write(&slub_lock);
|
||||
list_del(&s->list);
|
||||
up_write(&slub_lock);
|
||||
kfree(s);
|
||||
goto err;
|
||||
}
|
||||
return s;
|
||||
}
|
||||
kfree(s);
|
||||
|
|
@ -3202,7 +3218,7 @@ static struct notifier_block __cpuinitdata slab_notifier = {
|
|||
|
||||
#endif
|
||||
|
||||
void *__kmalloc_track_caller(size_t size, gfp_t gfpflags, void *caller)
|
||||
void *__kmalloc_track_caller(size_t size, gfp_t gfpflags, unsigned long caller)
|
||||
{
|
||||
struct kmem_cache *s;
|
||||
|
||||
|
|
@ -3218,7 +3234,7 @@ void *__kmalloc_track_caller(size_t size, gfp_t gfpflags, void *caller)
|
|||
}
|
||||
|
||||
void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags,
|
||||
int node, void *caller)
|
||||
int node, unsigned long caller)
|
||||
{
|
||||
struct kmem_cache *s;
|
||||
|
||||
|
|
@ -3429,7 +3445,7 @@ static void resiliency_test(void) {};
|
|||
|
||||
struct location {
|
||||
unsigned long count;
|
||||
void *addr;
|
||||
unsigned long addr;
|
||||
long long sum_time;
|
||||
long min_time;
|
||||
long max_time;
|
||||
|
|
@ -3477,7 +3493,7 @@ static int add_location(struct loc_track *t, struct kmem_cache *s,
|
|||
{
|
||||
long start, end, pos;
|
||||
struct location *l;
|
||||
void *caddr;
|
||||
unsigned long caddr;
|
||||
unsigned long age = jiffies - track->when;
|
||||
|
||||
start = -1;
|
||||
|
|
@ -4345,7 +4361,7 @@ static void sysfs_slab_remove(struct kmem_cache *s)
|
|||
|
||||
/*
|
||||
* Need to buffer aliases during bootup until sysfs becomes
|
||||
* available lest we loose that information.
|
||||
* available lest we lose that information.
|
||||
*/
|
||||
struct saved_alias {
|
||||
struct kmem_cache *s;
|
||||
|
|
|
|||
Loading…
Reference in a new issue