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@@ -130,7 +130,6 @@
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#define FORCED_DEBUG 0
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#define FORCED_DEBUG 0
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#endif
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#endif
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-
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/* Shouldn't this be in a header file somewhere? */
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/* Shouldn't this be in a header file somewhere? */
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#define BYTES_PER_WORD sizeof(void *)
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#define BYTES_PER_WORD sizeof(void *)
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@@ -217,12 +216,12 @@ static unsigned long offslab_limit;
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* Slabs are chained into three list: fully used, partial, fully free slabs.
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* Slabs are chained into three list: fully used, partial, fully free slabs.
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*/
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*/
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struct slab {
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struct slab {
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- struct list_head list;
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- unsigned long colouroff;
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- void *s_mem; /* including colour offset */
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- unsigned int inuse; /* num of objs active in slab */
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- kmem_bufctl_t free;
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- unsigned short nodeid;
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+ struct list_head list;
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+ unsigned long colouroff;
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+ void *s_mem; /* including colour offset */
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+ unsigned int inuse; /* num of objs active in slab */
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+ kmem_bufctl_t free;
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+ unsigned short nodeid;
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};
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};
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/*
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/*
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@@ -242,9 +241,9 @@ struct slab {
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* We assume struct slab_rcu can overlay struct slab when destroying.
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* We assume struct slab_rcu can overlay struct slab when destroying.
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*/
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*/
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struct slab_rcu {
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struct slab_rcu {
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- struct rcu_head head;
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- kmem_cache_t *cachep;
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- void *addr;
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+ struct rcu_head head;
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+ kmem_cache_t *cachep;
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+ void *addr;
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};
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};
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/*
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/*
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@@ -279,23 +278,23 @@ struct array_cache {
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#define BOOT_CPUCACHE_ENTRIES 1
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#define BOOT_CPUCACHE_ENTRIES 1
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struct arraycache_init {
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struct arraycache_init {
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struct array_cache cache;
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struct array_cache cache;
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- void * entries[BOOT_CPUCACHE_ENTRIES];
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+ void *entries[BOOT_CPUCACHE_ENTRIES];
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};
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};
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/*
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/*
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* The slab lists for all objects.
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* The slab lists for all objects.
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*/
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*/
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struct kmem_list3 {
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struct kmem_list3 {
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- struct list_head slabs_partial; /* partial list first, better asm code */
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- struct list_head slabs_full;
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- struct list_head slabs_free;
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- unsigned long free_objects;
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- unsigned long next_reap;
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- int free_touched;
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- unsigned int free_limit;
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- spinlock_t list_lock;
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- struct array_cache *shared; /* shared per node */
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- struct array_cache **alien; /* on other nodes */
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+ struct list_head slabs_partial; /* partial list first, better asm code */
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+ struct list_head slabs_full;
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+ struct list_head slabs_free;
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+ unsigned long free_objects;
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+ unsigned long next_reap;
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+ int free_touched;
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+ unsigned int free_limit;
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+ spinlock_t list_lock;
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+ struct array_cache *shared; /* shared per node */
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+ struct array_cache **alien; /* on other nodes */
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};
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};
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/*
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/*
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@@ -367,63 +366,63 @@ static inline void kmem_list3_init(struct kmem_list3 *parent)
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*
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*
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* manages a cache.
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* manages a cache.
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*/
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*/
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-
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+
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struct kmem_cache {
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struct kmem_cache {
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/* 1) per-cpu data, touched during every alloc/free */
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/* 1) per-cpu data, touched during every alloc/free */
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- struct array_cache *array[NR_CPUS];
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- unsigned int batchcount;
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- unsigned int limit;
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- unsigned int shared;
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- unsigned int objsize;
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+ struct array_cache *array[NR_CPUS];
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+ unsigned int batchcount;
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+ unsigned int limit;
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+ unsigned int shared;
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+ unsigned int objsize;
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/* 2) touched by every alloc & free from the backend */
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/* 2) touched by every alloc & free from the backend */
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- struct kmem_list3 *nodelists[MAX_NUMNODES];
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- unsigned int flags; /* constant flags */
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- unsigned int num; /* # of objs per slab */
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- spinlock_t spinlock;
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+ struct kmem_list3 *nodelists[MAX_NUMNODES];
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+ unsigned int flags; /* constant flags */
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+ unsigned int num; /* # of objs per slab */
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+ spinlock_t spinlock;
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/* 3) cache_grow/shrink */
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/* 3) cache_grow/shrink */
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/* order of pgs per slab (2^n) */
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/* order of pgs per slab (2^n) */
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- unsigned int gfporder;
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+ unsigned int gfporder;
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/* force GFP flags, e.g. GFP_DMA */
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/* force GFP flags, e.g. GFP_DMA */
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- gfp_t gfpflags;
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+ gfp_t gfpflags;
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- size_t colour; /* cache colouring range */
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- unsigned int colour_off; /* colour offset */
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- unsigned int colour_next; /* cache colouring */
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- kmem_cache_t *slabp_cache;
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- unsigned int slab_size;
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- unsigned int dflags; /* dynamic flags */
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+ size_t colour; /* cache colouring range */
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+ unsigned int colour_off; /* colour offset */
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+ unsigned int colour_next; /* cache colouring */
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+ kmem_cache_t *slabp_cache;
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+ unsigned int slab_size;
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+ unsigned int dflags; /* dynamic flags */
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/* constructor func */
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/* constructor func */
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- void (*ctor)(void *, kmem_cache_t *, unsigned long);
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+ void (*ctor) (void *, kmem_cache_t *, unsigned long);
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/* de-constructor func */
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/* de-constructor func */
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- void (*dtor)(void *, kmem_cache_t *, unsigned long);
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+ void (*dtor) (void *, kmem_cache_t *, unsigned long);
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/* 4) cache creation/removal */
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/* 4) cache creation/removal */
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- const char *name;
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- struct list_head next;
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+ const char *name;
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+ struct list_head next;
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/* 5) statistics */
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/* 5) statistics */
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#if STATS
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#if STATS
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- unsigned long num_active;
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- unsigned long num_allocations;
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- unsigned long high_mark;
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- unsigned long grown;
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- unsigned long reaped;
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- unsigned long errors;
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- unsigned long max_freeable;
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- unsigned long node_allocs;
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- unsigned long node_frees;
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- atomic_t allochit;
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- atomic_t allocmiss;
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- atomic_t freehit;
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- atomic_t freemiss;
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+ unsigned long num_active;
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+ unsigned long num_allocations;
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+ unsigned long high_mark;
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+ unsigned long grown;
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+ unsigned long reaped;
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+ unsigned long errors;
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+ unsigned long max_freeable;
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+ unsigned long node_allocs;
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+ unsigned long node_frees;
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+ atomic_t allochit;
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+ atomic_t allocmiss;
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+ atomic_t freehit;
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+ atomic_t freemiss;
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#endif
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#endif
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#if DEBUG
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#if DEBUG
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- int dbghead;
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- int reallen;
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+ int dbghead;
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+ int reallen;
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#endif
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#endif
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};
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};
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@@ -523,14 +522,15 @@ static unsigned long *dbg_redzone2(kmem_cache_t *cachep, void *objp)
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{
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{
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BUG_ON(!(cachep->flags & SLAB_RED_ZONE));
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BUG_ON(!(cachep->flags & SLAB_RED_ZONE));
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if (cachep->flags & SLAB_STORE_USER)
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if (cachep->flags & SLAB_STORE_USER)
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- return (unsigned long*) (objp+cachep->objsize-2*BYTES_PER_WORD);
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- return (unsigned long*) (objp+cachep->objsize-BYTES_PER_WORD);
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+ return (unsigned long *)(objp + cachep->objsize -
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+ 2 * BYTES_PER_WORD);
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+ return (unsigned long *)(objp + cachep->objsize - BYTES_PER_WORD);
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}
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}
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static void **dbg_userword(kmem_cache_t *cachep, void *objp)
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static void **dbg_userword(kmem_cache_t *cachep, void *objp)
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{
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{
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BUG_ON(!(cachep->flags & SLAB_STORE_USER));
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BUG_ON(!(cachep->flags & SLAB_STORE_USER));
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- return (void**)(objp+cachep->objsize-BYTES_PER_WORD);
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+ return (void **)(objp + cachep->objsize - BYTES_PER_WORD);
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}
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}
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#else
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#else
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@@ -607,31 +607,31 @@ struct cache_names {
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static struct cache_names __initdata cache_names[] = {
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static struct cache_names __initdata cache_names[] = {
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#define CACHE(x) { .name = "size-" #x, .name_dma = "size-" #x "(DMA)" },
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#define CACHE(x) { .name = "size-" #x, .name_dma = "size-" #x "(DMA)" },
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#include <linux/kmalloc_sizes.h>
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#include <linux/kmalloc_sizes.h>
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- { NULL, }
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+ {NULL,}
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#undef CACHE
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#undef CACHE
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};
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};
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static struct arraycache_init initarray_cache __initdata =
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static struct arraycache_init initarray_cache __initdata =
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- { { 0, BOOT_CPUCACHE_ENTRIES, 1, 0} };
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+ { {0, BOOT_CPUCACHE_ENTRIES, 1, 0} };
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static struct arraycache_init initarray_generic =
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static struct arraycache_init initarray_generic =
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- { { 0, BOOT_CPUCACHE_ENTRIES, 1, 0} };
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+ { {0, BOOT_CPUCACHE_ENTRIES, 1, 0} };
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/* internal cache of cache description objs */
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/* internal cache of cache description objs */
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static kmem_cache_t cache_cache = {
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static kmem_cache_t cache_cache = {
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- .batchcount = 1,
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- .limit = BOOT_CPUCACHE_ENTRIES,
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- .shared = 1,
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- .objsize = sizeof(kmem_cache_t),
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- .flags = SLAB_NO_REAP,
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- .spinlock = SPIN_LOCK_UNLOCKED,
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- .name = "kmem_cache",
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+ .batchcount = 1,
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+ .limit = BOOT_CPUCACHE_ENTRIES,
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+ .shared = 1,
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+ .objsize = sizeof(kmem_cache_t),
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+ .flags = SLAB_NO_REAP,
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+ .spinlock = SPIN_LOCK_UNLOCKED,
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+ .name = "kmem_cache",
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#if DEBUG
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#if DEBUG
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- .reallen = sizeof(kmem_cache_t),
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+ .reallen = sizeof(kmem_cache_t),
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#endif
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#endif
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};
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};
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/* Guard access to the cache-chain. */
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/* Guard access to the cache-chain. */
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-static struct semaphore cache_chain_sem;
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+static struct semaphore cache_chain_sem;
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static struct list_head cache_chain;
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static struct list_head cache_chain;
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/*
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/*
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@@ -655,9 +655,9 @@ static enum {
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static DEFINE_PER_CPU(struct work_struct, reap_work);
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static DEFINE_PER_CPU(struct work_struct, reap_work);
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-static void free_block(kmem_cache_t* cachep, void** objpp, int len, int node);
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-static void enable_cpucache (kmem_cache_t *cachep);
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-static void cache_reap (void *unused);
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+static void free_block(kmem_cache_t *cachep, void **objpp, int len, int node);
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+static void enable_cpucache(kmem_cache_t *cachep);
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+static void cache_reap(void *unused);
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static int __node_shrink(kmem_cache_t *cachep, int node);
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static int __node_shrink(kmem_cache_t *cachep, int node);
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static inline struct array_cache *ac_data(kmem_cache_t *cachep)
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static inline struct array_cache *ac_data(kmem_cache_t *cachep)
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@@ -671,9 +671,9 @@ static inline kmem_cache_t *__find_general_cachep(size_t size, gfp_t gfpflags)
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#if DEBUG
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#if DEBUG
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/* This happens if someone tries to call
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/* This happens if someone tries to call
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- * kmem_cache_create(), or __kmalloc(), before
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- * the generic caches are initialized.
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- */
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+ * kmem_cache_create(), or __kmalloc(), before
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+ * the generic caches are initialized.
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+ */
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BUG_ON(malloc_sizes[INDEX_AC].cs_cachep == NULL);
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BUG_ON(malloc_sizes[INDEX_AC].cs_cachep == NULL);
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#endif
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#endif
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while (size > csizep->cs_size)
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while (size > csizep->cs_size)
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@@ -697,10 +697,10 @@ EXPORT_SYMBOL(kmem_find_general_cachep);
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/* Cal the num objs, wastage, and bytes left over for a given slab size. */
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/* Cal the num objs, wastage, and bytes left over for a given slab size. */
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static void cache_estimate(unsigned long gfporder, size_t size, size_t align,
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static void cache_estimate(unsigned long gfporder, size_t size, size_t align,
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- int flags, size_t *left_over, unsigned int *num)
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+ int flags, size_t *left_over, unsigned int *num)
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{
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{
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int i;
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int i;
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- size_t wastage = PAGE_SIZE<<gfporder;
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+ size_t wastage = PAGE_SIZE << gfporder;
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size_t extra = 0;
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size_t extra = 0;
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size_t base = 0;
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size_t base = 0;
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@@ -709,7 +709,7 @@ static void cache_estimate(unsigned long gfporder, size_t size, size_t align,
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extra = sizeof(kmem_bufctl_t);
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extra = sizeof(kmem_bufctl_t);
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}
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}
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i = 0;
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i = 0;
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- while (i*size + ALIGN(base+i*extra, align) <= wastage)
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+ while (i * size + ALIGN(base + i * extra, align) <= wastage)
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i++;
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i++;
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if (i > 0)
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if (i > 0)
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i--;
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i--;
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@@ -718,8 +718,8 @@ static void cache_estimate(unsigned long gfporder, size_t size, size_t align,
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i = SLAB_LIMIT;
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i = SLAB_LIMIT;
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*num = i;
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*num = i;
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- wastage -= i*size;
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- wastage -= ALIGN(base+i*extra, align);
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+ wastage -= i * size;
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+ wastage -= ALIGN(base + i * extra, align);
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*left_over = wastage;
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*left_over = wastage;
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}
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}
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@@ -728,7 +728,7 @@ static void cache_estimate(unsigned long gfporder, size_t size, size_t align,
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static void __slab_error(const char *function, kmem_cache_t *cachep, char *msg)
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static void __slab_error(const char *function, kmem_cache_t *cachep, char *msg)
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{
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{
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printk(KERN_ERR "slab error in %s(): cache `%s': %s\n",
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printk(KERN_ERR "slab error in %s(): cache `%s': %s\n",
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- function, cachep->name, msg);
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+ function, cachep->name, msg);
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dump_stack();
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dump_stack();
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}
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}
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@@ -755,9 +755,9 @@ static void __devinit start_cpu_timer(int cpu)
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}
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}
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static struct array_cache *alloc_arraycache(int node, int entries,
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static struct array_cache *alloc_arraycache(int node, int entries,
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- int batchcount)
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+ int batchcount)
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{
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{
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- int memsize = sizeof(void*)*entries+sizeof(struct array_cache);
|
|
|
|
|
|
+ int memsize = sizeof(void *) * entries + sizeof(struct array_cache);
|
|
struct array_cache *nc = NULL;
|
|
struct array_cache *nc = NULL;
|
|
|
|
|
|
nc = kmalloc_node(memsize, GFP_KERNEL, node);
|
|
nc = kmalloc_node(memsize, GFP_KERNEL, node);
|
|
@@ -775,7 +775,7 @@ static struct array_cache *alloc_arraycache(int node, int entries,
|
|
static inline struct array_cache **alloc_alien_cache(int node, int limit)
|
|
static inline struct array_cache **alloc_alien_cache(int node, int limit)
|
|
{
|
|
{
|
|
struct array_cache **ac_ptr;
|
|
struct array_cache **ac_ptr;
|
|
- int memsize = sizeof(void*)*MAX_NUMNODES;
|
|
|
|
|
|
+ int memsize = sizeof(void *) * MAX_NUMNODES;
|
|
int i;
|
|
int i;
|
|
|
|
|
|
if (limit > 1)
|
|
if (limit > 1)
|
|
@@ -789,7 +789,7 @@ static inline struct array_cache **alloc_alien_cache(int node, int limit)
|
|
}
|
|
}
|
|
ac_ptr[i] = alloc_arraycache(node, limit, 0xbaadf00d);
|
|
ac_ptr[i] = alloc_arraycache(node, limit, 0xbaadf00d);
|
|
if (!ac_ptr[i]) {
|
|
if (!ac_ptr[i]) {
|
|
- for (i--; i <=0; i--)
|
|
|
|
|
|
+ for (i--; i <= 0; i--)
|
|
kfree(ac_ptr[i]);
|
|
kfree(ac_ptr[i]);
|
|
kfree(ac_ptr);
|
|
kfree(ac_ptr);
|
|
return NULL;
|
|
return NULL;
|
|
@@ -807,12 +807,13 @@ static inline void free_alien_cache(struct array_cache **ac_ptr)
|
|
return;
|
|
return;
|
|
|
|
|
|
for_each_node(i)
|
|
for_each_node(i)
|
|
- kfree(ac_ptr[i]);
|
|
|
|
|
|
+ kfree(ac_ptr[i]);
|
|
|
|
|
|
kfree(ac_ptr);
|
|
kfree(ac_ptr);
|
|
}
|
|
}
|
|
|
|
|
|
-static inline void __drain_alien_cache(kmem_cache_t *cachep, struct array_cache *ac, int node)
|
|
|
|
|
|
+static inline void __drain_alien_cache(kmem_cache_t *cachep,
|
|
|
|
+ struct array_cache *ac, int node)
|
|
{
|
|
{
|
|
struct kmem_list3 *rl3 = cachep->nodelists[node];
|
|
struct kmem_list3 *rl3 = cachep->nodelists[node];
|
|
|
|
|
|
@@ -826,7 +827,7 @@ static inline void __drain_alien_cache(kmem_cache_t *cachep, struct array_cache
|
|
|
|
|
|
static void drain_alien_cache(kmem_cache_t *cachep, struct kmem_list3 *l3)
|
|
static void drain_alien_cache(kmem_cache_t *cachep, struct kmem_list3 *l3)
|
|
{
|
|
{
|
|
- int i=0;
|
|
|
|
|
|
+ int i = 0;
|
|
struct array_cache *ac;
|
|
struct array_cache *ac;
|
|
unsigned long flags;
|
|
unsigned long flags;
|
|
|
|
|
|
@@ -846,10 +847,10 @@ static void drain_alien_cache(kmem_cache_t *cachep, struct kmem_list3 *l3)
|
|
#endif
|
|
#endif
|
|
|
|
|
|
static int __devinit cpuup_callback(struct notifier_block *nfb,
|
|
static int __devinit cpuup_callback(struct notifier_block *nfb,
|
|
- unsigned long action, void *hcpu)
|
|
|
|
|
|
+ unsigned long action, void *hcpu)
|
|
{
|
|
{
|
|
long cpu = (long)hcpu;
|
|
long cpu = (long)hcpu;
|
|
- kmem_cache_t* cachep;
|
|
|
|
|
|
+ kmem_cache_t *cachep;
|
|
struct kmem_list3 *l3 = NULL;
|
|
struct kmem_list3 *l3 = NULL;
|
|
int node = cpu_to_node(cpu);
|
|
int node = cpu_to_node(cpu);
|
|
int memsize = sizeof(struct kmem_list3);
|
|
int memsize = sizeof(struct kmem_list3);
|
|
@@ -871,27 +872,27 @@ static int __devinit cpuup_callback(struct notifier_block *nfb,
|
|
*/
|
|
*/
|
|
if (!cachep->nodelists[node]) {
|
|
if (!cachep->nodelists[node]) {
|
|
if (!(l3 = kmalloc_node(memsize,
|
|
if (!(l3 = kmalloc_node(memsize,
|
|
- GFP_KERNEL, node)))
|
|
|
|
|
|
+ GFP_KERNEL, node)))
|
|
goto bad;
|
|
goto bad;
|
|
kmem_list3_init(l3);
|
|
kmem_list3_init(l3);
|
|
l3->next_reap = jiffies + REAPTIMEOUT_LIST3 +
|
|
l3->next_reap = jiffies + REAPTIMEOUT_LIST3 +
|
|
- ((unsigned long)cachep)%REAPTIMEOUT_LIST3;
|
|
|
|
|
|
+ ((unsigned long)cachep) % REAPTIMEOUT_LIST3;
|
|
|
|
|
|
cachep->nodelists[node] = l3;
|
|
cachep->nodelists[node] = l3;
|
|
}
|
|
}
|
|
|
|
|
|
spin_lock_irq(&cachep->nodelists[node]->list_lock);
|
|
spin_lock_irq(&cachep->nodelists[node]->list_lock);
|
|
cachep->nodelists[node]->free_limit =
|
|
cachep->nodelists[node]->free_limit =
|
|
- (1 + nr_cpus_node(node)) *
|
|
|
|
- cachep->batchcount + cachep->num;
|
|
|
|
|
|
+ (1 + nr_cpus_node(node)) *
|
|
|
|
+ cachep->batchcount + cachep->num;
|
|
spin_unlock_irq(&cachep->nodelists[node]->list_lock);
|
|
spin_unlock_irq(&cachep->nodelists[node]->list_lock);
|
|
}
|
|
}
|
|
|
|
|
|
/* Now we can go ahead with allocating the shared array's
|
|
/* Now we can go ahead with allocating the shared array's
|
|
- & array cache's */
|
|
|
|
|
|
+ & array cache's */
|
|
list_for_each_entry(cachep, &cache_chain, next) {
|
|
list_for_each_entry(cachep, &cache_chain, next) {
|
|
nc = alloc_arraycache(node, cachep->limit,
|
|
nc = alloc_arraycache(node, cachep->limit,
|
|
- cachep->batchcount);
|
|
|
|
|
|
+ cachep->batchcount);
|
|
if (!nc)
|
|
if (!nc)
|
|
goto bad;
|
|
goto bad;
|
|
cachep->array[cpu] = nc;
|
|
cachep->array[cpu] = nc;
|
|
@@ -900,12 +901,13 @@ static int __devinit cpuup_callback(struct notifier_block *nfb,
|
|
BUG_ON(!l3);
|
|
BUG_ON(!l3);
|
|
if (!l3->shared) {
|
|
if (!l3->shared) {
|
|
if (!(nc = alloc_arraycache(node,
|
|
if (!(nc = alloc_arraycache(node,
|
|
- cachep->shared*cachep->batchcount,
|
|
|
|
- 0xbaadf00d)))
|
|
|
|
- goto bad;
|
|
|
|
|
|
+ cachep->shared *
|
|
|
|
+ cachep->batchcount,
|
|
|
|
+ 0xbaadf00d)))
|
|
|
|
+ goto bad;
|
|
|
|
|
|
/* we are serialised from CPU_DEAD or
|
|
/* we are serialised from CPU_DEAD or
|
|
- CPU_UP_CANCELLED by the cpucontrol lock */
|
|
|
|
|
|
+ CPU_UP_CANCELLED by the cpucontrol lock */
|
|
l3->shared = nc;
|
|
l3->shared = nc;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
@@ -942,13 +944,13 @@ static int __devinit cpuup_callback(struct notifier_block *nfb,
|
|
free_block(cachep, nc->entry, nc->avail, node);
|
|
free_block(cachep, nc->entry, nc->avail, node);
|
|
|
|
|
|
if (!cpus_empty(mask)) {
|
|
if (!cpus_empty(mask)) {
|
|
- spin_unlock(&l3->list_lock);
|
|
|
|
- goto unlock_cache;
|
|
|
|
- }
|
|
|
|
|
|
+ spin_unlock(&l3->list_lock);
|
|
|
|
+ goto unlock_cache;
|
|
|
|
+ }
|
|
|
|
|
|
if (l3->shared) {
|
|
if (l3->shared) {
|
|
free_block(cachep, l3->shared->entry,
|
|
free_block(cachep, l3->shared->entry,
|
|
- l3->shared->avail, node);
|
|
|
|
|
|
+ l3->shared->avail, node);
|
|
kfree(l3->shared);
|
|
kfree(l3->shared);
|
|
l3->shared = NULL;
|
|
l3->shared = NULL;
|
|
}
|
|
}
|
|
@@ -966,7 +968,7 @@ static int __devinit cpuup_callback(struct notifier_block *nfb,
|
|
} else {
|
|
} else {
|
|
spin_unlock(&l3->list_lock);
|
|
spin_unlock(&l3->list_lock);
|
|
}
|
|
}
|
|
-unlock_cache:
|
|
|
|
|
|
+ unlock_cache:
|
|
spin_unlock_irq(&cachep->spinlock);
|
|
spin_unlock_irq(&cachep->spinlock);
|
|
kfree(nc);
|
|
kfree(nc);
|
|
}
|
|
}
|
|
@@ -975,7 +977,7 @@ unlock_cache:
|
|
#endif
|
|
#endif
|
|
}
|
|
}
|
|
return NOTIFY_OK;
|
|
return NOTIFY_OK;
|
|
-bad:
|
|
|
|
|
|
+ bad:
|
|
up(&cache_chain_sem);
|
|
up(&cache_chain_sem);
|
|
return NOTIFY_BAD;
|
|
return NOTIFY_BAD;
|
|
}
|
|
}
|
|
@@ -985,8 +987,7 @@ static struct notifier_block cpucache_notifier = { &cpuup_callback, NULL, 0 };
|
|
/*
|
|
/*
|
|
* swap the static kmem_list3 with kmalloced memory
|
|
* swap the static kmem_list3 with kmalloced memory
|
|
*/
|
|
*/
|
|
-static void init_list(kmem_cache_t *cachep, struct kmem_list3 *list,
|
|
|
|
- int nodeid)
|
|
|
|
|
|
+static void init_list(kmem_cache_t *cachep, struct kmem_list3 *list, int nodeid)
|
|
{
|
|
{
|
|
struct kmem_list3 *ptr;
|
|
struct kmem_list3 *ptr;
|
|
|
|
|
|
@@ -1055,14 +1056,14 @@ void __init kmem_cache_init(void)
|
|
cache_cache.objsize = ALIGN(cache_cache.objsize, cache_line_size());
|
|
cache_cache.objsize = ALIGN(cache_cache.objsize, cache_line_size());
|
|
|
|
|
|
cache_estimate(0, cache_cache.objsize, cache_line_size(), 0,
|
|
cache_estimate(0, cache_cache.objsize, cache_line_size(), 0,
|
|
- &left_over, &cache_cache.num);
|
|
|
|
|
|
+ &left_over, &cache_cache.num);
|
|
if (!cache_cache.num)
|
|
if (!cache_cache.num)
|
|
BUG();
|
|
BUG();
|
|
|
|
|
|
- cache_cache.colour = left_over/cache_cache.colour_off;
|
|
|
|
|
|
+ cache_cache.colour = left_over / cache_cache.colour_off;
|
|
cache_cache.colour_next = 0;
|
|
cache_cache.colour_next = 0;
|
|
- cache_cache.slab_size = ALIGN(cache_cache.num*sizeof(kmem_bufctl_t) +
|
|
|
|
- sizeof(struct slab), cache_line_size());
|
|
|
|
|
|
+ cache_cache.slab_size = ALIGN(cache_cache.num * sizeof(kmem_bufctl_t) +
|
|
|
|
+ sizeof(struct slab), cache_line_size());
|
|
|
|
|
|
/* 2+3) create the kmalloc caches */
|
|
/* 2+3) create the kmalloc caches */
|
|
sizes = malloc_sizes;
|
|
sizes = malloc_sizes;
|
|
@@ -1074,14 +1075,18 @@ void __init kmem_cache_init(void)
|
|
*/
|
|
*/
|
|
|
|
|
|
sizes[INDEX_AC].cs_cachep = kmem_cache_create(names[INDEX_AC].name,
|
|
sizes[INDEX_AC].cs_cachep = kmem_cache_create(names[INDEX_AC].name,
|
|
- sizes[INDEX_AC].cs_size, ARCH_KMALLOC_MINALIGN,
|
|
|
|
- (ARCH_KMALLOC_FLAGS | SLAB_PANIC), NULL, NULL);
|
|
|
|
|
|
+ sizes[INDEX_AC].cs_size,
|
|
|
|
+ ARCH_KMALLOC_MINALIGN,
|
|
|
|
+ (ARCH_KMALLOC_FLAGS |
|
|
|
|
+ SLAB_PANIC), NULL, NULL);
|
|
|
|
|
|
if (INDEX_AC != INDEX_L3)
|
|
if (INDEX_AC != INDEX_L3)
|
|
sizes[INDEX_L3].cs_cachep =
|
|
sizes[INDEX_L3].cs_cachep =
|
|
- kmem_cache_create(names[INDEX_L3].name,
|
|
|
|
- sizes[INDEX_L3].cs_size, ARCH_KMALLOC_MINALIGN,
|
|
|
|
- (ARCH_KMALLOC_FLAGS | SLAB_PANIC), NULL, NULL);
|
|
|
|
|
|
+ kmem_cache_create(names[INDEX_L3].name,
|
|
|
|
+ sizes[INDEX_L3].cs_size,
|
|
|
|
+ ARCH_KMALLOC_MINALIGN,
|
|
|
|
+ (ARCH_KMALLOC_FLAGS | SLAB_PANIC), NULL,
|
|
|
|
+ NULL);
|
|
|
|
|
|
while (sizes->cs_size != ULONG_MAX) {
|
|
while (sizes->cs_size != ULONG_MAX) {
|
|
/*
|
|
/*
|
|
@@ -1091,35 +1096,41 @@ void __init kmem_cache_init(void)
|
|
* Note for systems short on memory removing the alignment will
|
|
* Note for systems short on memory removing the alignment will
|
|
* allow tighter packing of the smaller caches.
|
|
* allow tighter packing of the smaller caches.
|
|
*/
|
|
*/
|
|
- if(!sizes->cs_cachep)
|
|
|
|
|
|
+ if (!sizes->cs_cachep)
|
|
sizes->cs_cachep = kmem_cache_create(names->name,
|
|
sizes->cs_cachep = kmem_cache_create(names->name,
|
|
- sizes->cs_size, ARCH_KMALLOC_MINALIGN,
|
|
|
|
- (ARCH_KMALLOC_FLAGS | SLAB_PANIC), NULL, NULL);
|
|
|
|
|
|
+ sizes->cs_size,
|
|
|
|
+ ARCH_KMALLOC_MINALIGN,
|
|
|
|
+ (ARCH_KMALLOC_FLAGS
|
|
|
|
+ | SLAB_PANIC),
|
|
|
|
+ NULL, NULL);
|
|
|
|
|
|
/* Inc off-slab bufctl limit until the ceiling is hit. */
|
|
/* Inc off-slab bufctl limit until the ceiling is hit. */
|
|
if (!(OFF_SLAB(sizes->cs_cachep))) {
|
|
if (!(OFF_SLAB(sizes->cs_cachep))) {
|
|
- offslab_limit = sizes->cs_size-sizeof(struct slab);
|
|
|
|
|
|
+ offslab_limit = sizes->cs_size - sizeof(struct slab);
|
|
offslab_limit /= sizeof(kmem_bufctl_t);
|
|
offslab_limit /= sizeof(kmem_bufctl_t);
|
|
}
|
|
}
|
|
|
|
|
|
sizes->cs_dmacachep = kmem_cache_create(names->name_dma,
|
|
sizes->cs_dmacachep = kmem_cache_create(names->name_dma,
|
|
- sizes->cs_size, ARCH_KMALLOC_MINALIGN,
|
|
|
|
- (ARCH_KMALLOC_FLAGS | SLAB_CACHE_DMA | SLAB_PANIC),
|
|
|
|
- NULL, NULL);
|
|
|
|
|
|
+ sizes->cs_size,
|
|
|
|
+ ARCH_KMALLOC_MINALIGN,
|
|
|
|
+ (ARCH_KMALLOC_FLAGS |
|
|
|
|
+ SLAB_CACHE_DMA |
|
|
|
|
+ SLAB_PANIC), NULL,
|
|
|
|
+ NULL);
|
|
|
|
|
|
sizes++;
|
|
sizes++;
|
|
names++;
|
|
names++;
|
|
}
|
|
}
|
|
/* 4) Replace the bootstrap head arrays */
|
|
/* 4) Replace the bootstrap head arrays */
|
|
{
|
|
{
|
|
- void * ptr;
|
|
|
|
|
|
+ void *ptr;
|
|
|
|
|
|
ptr = kmalloc(sizeof(struct arraycache_init), GFP_KERNEL);
|
|
ptr = kmalloc(sizeof(struct arraycache_init), GFP_KERNEL);
|
|
|
|
|
|
local_irq_disable();
|
|
local_irq_disable();
|
|
BUG_ON(ac_data(&cache_cache) != &initarray_cache.cache);
|
|
BUG_ON(ac_data(&cache_cache) != &initarray_cache.cache);
|
|
memcpy(ptr, ac_data(&cache_cache),
|
|
memcpy(ptr, ac_data(&cache_cache),
|
|
- sizeof(struct arraycache_init));
|
|
|
|
|
|
+ sizeof(struct arraycache_init));
|
|
cache_cache.array[smp_processor_id()] = ptr;
|
|
cache_cache.array[smp_processor_id()] = ptr;
|
|
local_irq_enable();
|
|
local_irq_enable();
|
|
|
|
|
|
@@ -1127,11 +1138,11 @@ void __init kmem_cache_init(void)
|
|
|
|
|
|
local_irq_disable();
|
|
local_irq_disable();
|
|
BUG_ON(ac_data(malloc_sizes[INDEX_AC].cs_cachep)
|
|
BUG_ON(ac_data(malloc_sizes[INDEX_AC].cs_cachep)
|
|
- != &initarray_generic.cache);
|
|
|
|
|
|
+ != &initarray_generic.cache);
|
|
memcpy(ptr, ac_data(malloc_sizes[INDEX_AC].cs_cachep),
|
|
memcpy(ptr, ac_data(malloc_sizes[INDEX_AC].cs_cachep),
|
|
- sizeof(struct arraycache_init));
|
|
|
|
|
|
+ sizeof(struct arraycache_init));
|
|
malloc_sizes[INDEX_AC].cs_cachep->array[smp_processor_id()] =
|
|
malloc_sizes[INDEX_AC].cs_cachep->array[smp_processor_id()] =
|
|
- ptr;
|
|
|
|
|
|
+ ptr;
|
|
local_irq_enable();
|
|
local_irq_enable();
|
|
}
|
|
}
|
|
/* 5) Replace the bootstrap kmem_list3's */
|
|
/* 5) Replace the bootstrap kmem_list3's */
|
|
@@ -1139,16 +1150,16 @@ void __init kmem_cache_init(void)
|
|
int node;
|
|
int node;
|
|
/* Replace the static kmem_list3 structures for the boot cpu */
|
|
/* Replace the static kmem_list3 structures for the boot cpu */
|
|
init_list(&cache_cache, &initkmem_list3[CACHE_CACHE],
|
|
init_list(&cache_cache, &initkmem_list3[CACHE_CACHE],
|
|
- numa_node_id());
|
|
|
|
|
|
+ numa_node_id());
|
|
|
|
|
|
for_each_online_node(node) {
|
|
for_each_online_node(node) {
|
|
init_list(malloc_sizes[INDEX_AC].cs_cachep,
|
|
init_list(malloc_sizes[INDEX_AC].cs_cachep,
|
|
- &initkmem_list3[SIZE_AC+node], node);
|
|
|
|
|
|
+ &initkmem_list3[SIZE_AC + node], node);
|
|
|
|
|
|
if (INDEX_AC != INDEX_L3) {
|
|
if (INDEX_AC != INDEX_L3) {
|
|
init_list(malloc_sizes[INDEX_L3].cs_cachep,
|
|
init_list(malloc_sizes[INDEX_L3].cs_cachep,
|
|
- &initkmem_list3[SIZE_L3+node],
|
|
|
|
- node);
|
|
|
|
|
|
+ &initkmem_list3[SIZE_L3 + node],
|
|
|
|
+ node);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
@@ -1158,7 +1169,7 @@ void __init kmem_cache_init(void)
|
|
kmem_cache_t *cachep;
|
|
kmem_cache_t *cachep;
|
|
down(&cache_chain_sem);
|
|
down(&cache_chain_sem);
|
|
list_for_each_entry(cachep, &cache_chain, next)
|
|
list_for_each_entry(cachep, &cache_chain, next)
|
|
- enable_cpucache(cachep);
|
|
|
|
|
|
+ enable_cpucache(cachep);
|
|
up(&cache_chain_sem);
|
|
up(&cache_chain_sem);
|
|
}
|
|
}
|
|
|
|
|
|
@@ -1184,7 +1195,7 @@ static int __init cpucache_init(void)
|
|
* pages to gfp.
|
|
* pages to gfp.
|
|
*/
|
|
*/
|
|
for_each_online_cpu(cpu)
|
|
for_each_online_cpu(cpu)
|
|
- start_cpu_timer(cpu);
|
|
|
|
|
|
+ start_cpu_timer(cpu);
|
|
|
|
|
|
return 0;
|
|
return 0;
|
|
}
|
|
}
|
|
@@ -1226,7 +1237,7 @@ static void *kmem_getpages(kmem_cache_t *cachep, gfp_t flags, int nodeid)
|
|
*/
|
|
*/
|
|
static void kmem_freepages(kmem_cache_t *cachep, void *addr)
|
|
static void kmem_freepages(kmem_cache_t *cachep, void *addr)
|
|
{
|
|
{
|
|
- unsigned long i = (1<<cachep->gfporder);
|
|
|
|
|
|
+ unsigned long i = (1 << cachep->gfporder);
|
|
struct page *page = virt_to_page(addr);
|
|
struct page *page = virt_to_page(addr);
|
|
const unsigned long nr_freed = i;
|
|
const unsigned long nr_freed = i;
|
|
|
|
|
|
@@ -1239,13 +1250,13 @@ static void kmem_freepages(kmem_cache_t *cachep, void *addr)
|
|
if (current->reclaim_state)
|
|
if (current->reclaim_state)
|
|
current->reclaim_state->reclaimed_slab += nr_freed;
|
|
current->reclaim_state->reclaimed_slab += nr_freed;
|
|
free_pages((unsigned long)addr, cachep->gfporder);
|
|
free_pages((unsigned long)addr, cachep->gfporder);
|
|
- if (cachep->flags & SLAB_RECLAIM_ACCOUNT)
|
|
|
|
- atomic_sub(1<<cachep->gfporder, &slab_reclaim_pages);
|
|
|
|
|
|
+ if (cachep->flags & SLAB_RECLAIM_ACCOUNT)
|
|
|
|
+ atomic_sub(1 << cachep->gfporder, &slab_reclaim_pages);
|
|
}
|
|
}
|
|
|
|
|
|
static void kmem_rcu_free(struct rcu_head *head)
|
|
static void kmem_rcu_free(struct rcu_head *head)
|
|
{
|
|
{
|
|
- struct slab_rcu *slab_rcu = (struct slab_rcu *) head;
|
|
|
|
|
|
+ struct slab_rcu *slab_rcu = (struct slab_rcu *)head;
|
|
kmem_cache_t *cachep = slab_rcu->cachep;
|
|
kmem_cache_t *cachep = slab_rcu->cachep;
|
|
|
|
|
|
kmem_freepages(cachep, slab_rcu->addr);
|
|
kmem_freepages(cachep, slab_rcu->addr);
|
|
@@ -1257,19 +1268,19 @@ static void kmem_rcu_free(struct rcu_head *head)
|
|
|
|
|
|
#ifdef CONFIG_DEBUG_PAGEALLOC
|
|
#ifdef CONFIG_DEBUG_PAGEALLOC
|
|
static void store_stackinfo(kmem_cache_t *cachep, unsigned long *addr,
|
|
static void store_stackinfo(kmem_cache_t *cachep, unsigned long *addr,
|
|
- unsigned long caller)
|
|
|
|
|
|
+ unsigned long caller)
|
|
{
|
|
{
|
|
int size = obj_reallen(cachep);
|
|
int size = obj_reallen(cachep);
|
|
|
|
|
|
- addr = (unsigned long *)&((char*)addr)[obj_dbghead(cachep)];
|
|
|
|
|
|
+ addr = (unsigned long *)&((char *)addr)[obj_dbghead(cachep)];
|
|
|
|
|
|
- if (size < 5*sizeof(unsigned long))
|
|
|
|
|
|
+ if (size < 5 * sizeof(unsigned long))
|
|
return;
|
|
return;
|
|
|
|
|
|
- *addr++=0x12345678;
|
|
|
|
- *addr++=caller;
|
|
|
|
- *addr++=smp_processor_id();
|
|
|
|
- size -= 3*sizeof(unsigned long);
|
|
|
|
|
|
+ *addr++ = 0x12345678;
|
|
|
|
+ *addr++ = caller;
|
|
|
|
+ *addr++ = smp_processor_id();
|
|
|
|
+ size -= 3 * sizeof(unsigned long);
|
|
{
|
|
{
|
|
unsigned long *sptr = &caller;
|
|
unsigned long *sptr = &caller;
|
|
unsigned long svalue;
|
|
unsigned long svalue;
|
|
@@ -1277,7 +1288,7 @@ static void store_stackinfo(kmem_cache_t *cachep, unsigned long *addr,
|
|
while (!kstack_end(sptr)) {
|
|
while (!kstack_end(sptr)) {
|
|
svalue = *sptr++;
|
|
svalue = *sptr++;
|
|
if (kernel_text_address(svalue)) {
|
|
if (kernel_text_address(svalue)) {
|
|
- *addr++=svalue;
|
|
|
|
|
|
+ *addr++ = svalue;
|
|
size -= sizeof(unsigned long);
|
|
size -= sizeof(unsigned long);
|
|
if (size <= sizeof(unsigned long))
|
|
if (size <= sizeof(unsigned long))
|
|
break;
|
|
break;
|
|
@@ -1285,25 +1296,25 @@ static void store_stackinfo(kmem_cache_t *cachep, unsigned long *addr,
|
|
}
|
|
}
|
|
|
|
|
|
}
|
|
}
|
|
- *addr++=0x87654321;
|
|
|
|
|
|
+ *addr++ = 0x87654321;
|
|
}
|
|
}
|
|
#endif
|
|
#endif
|
|
|
|
|
|
static void poison_obj(kmem_cache_t *cachep, void *addr, unsigned char val)
|
|
static void poison_obj(kmem_cache_t *cachep, void *addr, unsigned char val)
|
|
{
|
|
{
|
|
int size = obj_reallen(cachep);
|
|
int size = obj_reallen(cachep);
|
|
- addr = &((char*)addr)[obj_dbghead(cachep)];
|
|
|
|
|
|
+ addr = &((char *)addr)[obj_dbghead(cachep)];
|
|
|
|
|
|
memset(addr, val, size);
|
|
memset(addr, val, size);
|
|
- *(unsigned char *)(addr+size-1) = POISON_END;
|
|
|
|
|
|
+ *(unsigned char *)(addr + size - 1) = POISON_END;
|
|
}
|
|
}
|
|
|
|
|
|
static void dump_line(char *data, int offset, int limit)
|
|
static void dump_line(char *data, int offset, int limit)
|
|
{
|
|
{
|
|
int i;
|
|
int i;
|
|
printk(KERN_ERR "%03x:", offset);
|
|
printk(KERN_ERR "%03x:", offset);
|
|
- for (i=0;i<limit;i++) {
|
|
|
|
- printk(" %02x", (unsigned char)data[offset+i]);
|
|
|
|
|
|
+ for (i = 0; i < limit; i++) {
|
|
|
|
+ printk(" %02x", (unsigned char)data[offset + i]);
|
|
}
|
|
}
|
|
printk("\n");
|
|
printk("\n");
|
|
}
|
|
}
|
|
@@ -1318,24 +1329,24 @@ static void print_objinfo(kmem_cache_t *cachep, void *objp, int lines)
|
|
|
|
|
|
if (cachep->flags & SLAB_RED_ZONE) {
|
|
if (cachep->flags & SLAB_RED_ZONE) {
|
|
printk(KERN_ERR "Redzone: 0x%lx/0x%lx.\n",
|
|
printk(KERN_ERR "Redzone: 0x%lx/0x%lx.\n",
|
|
- *dbg_redzone1(cachep, objp),
|
|
|
|
- *dbg_redzone2(cachep, objp));
|
|
|
|
|
|
+ *dbg_redzone1(cachep, objp),
|
|
|
|
+ *dbg_redzone2(cachep, objp));
|
|
}
|
|
}
|
|
|
|
|
|
if (cachep->flags & SLAB_STORE_USER) {
|
|
if (cachep->flags & SLAB_STORE_USER) {
|
|
printk(KERN_ERR "Last user: [<%p>]",
|
|
printk(KERN_ERR "Last user: [<%p>]",
|
|
- *dbg_userword(cachep, objp));
|
|
|
|
|
|
+ *dbg_userword(cachep, objp));
|
|
print_symbol("(%s)",
|
|
print_symbol("(%s)",
|
|
- (unsigned long)*dbg_userword(cachep, objp));
|
|
|
|
|
|
+ (unsigned long)*dbg_userword(cachep, objp));
|
|
printk("\n");
|
|
printk("\n");
|
|
}
|
|
}
|
|
- realobj = (char*)objp+obj_dbghead(cachep);
|
|
|
|
|
|
+ realobj = (char *)objp + obj_dbghead(cachep);
|
|
size = obj_reallen(cachep);
|
|
size = obj_reallen(cachep);
|
|
- for (i=0; i<size && lines;i+=16, lines--) {
|
|
|
|
|
|
+ for (i = 0; i < size && lines; i += 16, lines--) {
|
|
int limit;
|
|
int limit;
|
|
limit = 16;
|
|
limit = 16;
|
|
- if (i+limit > size)
|
|
|
|
- limit = size-i;
|
|
|
|
|
|
+ if (i + limit > size)
|
|
|
|
+ limit = size - i;
|
|
dump_line(realobj, i, limit);
|
|
dump_line(realobj, i, limit);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
@@ -1346,27 +1357,28 @@ static void check_poison_obj(kmem_cache_t *cachep, void *objp)
|
|
int size, i;
|
|
int size, i;
|
|
int lines = 0;
|
|
int lines = 0;
|
|
|
|
|
|
- realobj = (char*)objp+obj_dbghead(cachep);
|
|
|
|
|
|
+ realobj = (char *)objp + obj_dbghead(cachep);
|
|
size = obj_reallen(cachep);
|
|
size = obj_reallen(cachep);
|
|
|
|
|
|
- for (i=0;i<size;i++) {
|
|
|
|
|
|
+ for (i = 0; i < size; i++) {
|
|
char exp = POISON_FREE;
|
|
char exp = POISON_FREE;
|
|
- if (i == size-1)
|
|
|
|
|
|
+ if (i == size - 1)
|
|
exp = POISON_END;
|
|
exp = POISON_END;
|
|
if (realobj[i] != exp) {
|
|
if (realobj[i] != exp) {
|
|
int limit;
|
|
int limit;
|
|
/* Mismatch ! */
|
|
/* Mismatch ! */
|
|
/* Print header */
|
|
/* Print header */
|
|
if (lines == 0) {
|
|
if (lines == 0) {
|
|
- printk(KERN_ERR "Slab corruption: start=%p, len=%d\n",
|
|
|
|
- realobj, size);
|
|
|
|
|
|
+ printk(KERN_ERR
|
|
|
|
+ "Slab corruption: start=%p, len=%d\n",
|
|
|
|
+ realobj, size);
|
|
print_objinfo(cachep, objp, 0);
|
|
print_objinfo(cachep, objp, 0);
|
|
}
|
|
}
|
|
/* Hexdump the affected line */
|
|
/* Hexdump the affected line */
|
|
- i = (i/16)*16;
|
|
|
|
|
|
+ i = (i / 16) * 16;
|
|
limit = 16;
|
|
limit = 16;
|
|
- if (i+limit > size)
|
|
|
|
- limit = size-i;
|
|
|
|
|
|
+ if (i + limit > size)
|
|
|
|
+ limit = size - i;
|
|
dump_line(realobj, i, limit);
|
|
dump_line(realobj, i, limit);
|
|
i += 16;
|
|
i += 16;
|
|
lines++;
|
|
lines++;
|
|
@@ -1382,19 +1394,19 @@ static void check_poison_obj(kmem_cache_t *cachep, void *objp)
|
|
struct slab *slabp = page_get_slab(virt_to_page(objp));
|
|
struct slab *slabp = page_get_slab(virt_to_page(objp));
|
|
int objnr;
|
|
int objnr;
|
|
|
|
|
|
- objnr = (objp-slabp->s_mem)/cachep->objsize;
|
|
|
|
|
|
+ objnr = (objp - slabp->s_mem) / cachep->objsize;
|
|
if (objnr) {
|
|
if (objnr) {
|
|
- objp = slabp->s_mem+(objnr-1)*cachep->objsize;
|
|
|
|
- realobj = (char*)objp+obj_dbghead(cachep);
|
|
|
|
|
|
+ objp = slabp->s_mem + (objnr - 1) * cachep->objsize;
|
|
|
|
+ realobj = (char *)objp + obj_dbghead(cachep);
|
|
printk(KERN_ERR "Prev obj: start=%p, len=%d\n",
|
|
printk(KERN_ERR "Prev obj: start=%p, len=%d\n",
|
|
- realobj, size);
|
|
|
|
|
|
+ realobj, size);
|
|
print_objinfo(cachep, objp, 2);
|
|
print_objinfo(cachep, objp, 2);
|
|
}
|
|
}
|
|
- if (objnr+1 < cachep->num) {
|
|
|
|
- objp = slabp->s_mem+(objnr+1)*cachep->objsize;
|
|
|
|
- realobj = (char*)objp+obj_dbghead(cachep);
|
|
|
|
|
|
+ if (objnr + 1 < cachep->num) {
|
|
|
|
+ objp = slabp->s_mem + (objnr + 1) * cachep->objsize;
|
|
|
|
+ realobj = (char *)objp + obj_dbghead(cachep);
|
|
printk(KERN_ERR "Next obj: start=%p, len=%d\n",
|
|
printk(KERN_ERR "Next obj: start=%p, len=%d\n",
|
|
- realobj, size);
|
|
|
|
|
|
+ realobj, size);
|
|
print_objinfo(cachep, objp, 2);
|
|
print_objinfo(cachep, objp, 2);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
@@ -1405,7 +1417,7 @@ static void check_poison_obj(kmem_cache_t *cachep, void *objp)
|
|
* Before calling the slab must have been unlinked from the cache.
|
|
* Before calling the slab must have been unlinked from the cache.
|
|
* The cache-lock is not held/needed.
|
|
* The cache-lock is not held/needed.
|
|
*/
|
|
*/
|
|
-static void slab_destroy (kmem_cache_t *cachep, struct slab *slabp)
|
|
|
|
|
|
+static void slab_destroy(kmem_cache_t *cachep, struct slab *slabp)
|
|
{
|
|
{
|
|
void *addr = slabp->s_mem - slabp->colouroff;
|
|
void *addr = slabp->s_mem - slabp->colouroff;
|
|
|
|
|
|
@@ -1416,8 +1428,11 @@ static void slab_destroy (kmem_cache_t *cachep, struct slab *slabp)
|
|
|
|
|
|
if (cachep->flags & SLAB_POISON) {
|
|
if (cachep->flags & SLAB_POISON) {
|
|
#ifdef CONFIG_DEBUG_PAGEALLOC
|
|
#ifdef CONFIG_DEBUG_PAGEALLOC
|
|
- if ((cachep->objsize%PAGE_SIZE)==0 && OFF_SLAB(cachep))
|
|
|
|
- kernel_map_pages(virt_to_page(objp), cachep->objsize/PAGE_SIZE,1);
|
|
|
|
|
|
+ if ((cachep->objsize % PAGE_SIZE) == 0
|
|
|
|
+ && OFF_SLAB(cachep))
|
|
|
|
+ kernel_map_pages(virt_to_page(objp),
|
|
|
|
+ cachep->objsize / PAGE_SIZE,
|
|
|
|
+ 1);
|
|
else
|
|
else
|
|
check_poison_obj(cachep, objp);
|
|
check_poison_obj(cachep, objp);
|
|
#else
|
|
#else
|
|
@@ -1427,20 +1442,20 @@ static void slab_destroy (kmem_cache_t *cachep, struct slab *slabp)
|
|
if (cachep->flags & SLAB_RED_ZONE) {
|
|
if (cachep->flags & SLAB_RED_ZONE) {
|
|
if (*dbg_redzone1(cachep, objp) != RED_INACTIVE)
|
|
if (*dbg_redzone1(cachep, objp) != RED_INACTIVE)
|
|
slab_error(cachep, "start of a freed object "
|
|
slab_error(cachep, "start of a freed object "
|
|
- "was overwritten");
|
|
|
|
|
|
+ "was overwritten");
|
|
if (*dbg_redzone2(cachep, objp) != RED_INACTIVE)
|
|
if (*dbg_redzone2(cachep, objp) != RED_INACTIVE)
|
|
slab_error(cachep, "end of a freed object "
|
|
slab_error(cachep, "end of a freed object "
|
|
- "was overwritten");
|
|
|
|
|
|
+ "was overwritten");
|
|
}
|
|
}
|
|
if (cachep->dtor && !(cachep->flags & SLAB_POISON))
|
|
if (cachep->dtor && !(cachep->flags & SLAB_POISON))
|
|
- (cachep->dtor)(objp+obj_dbghead(cachep), cachep, 0);
|
|
|
|
|
|
+ (cachep->dtor) (objp + obj_dbghead(cachep), cachep, 0);
|
|
}
|
|
}
|
|
#else
|
|
#else
|
|
if (cachep->dtor) {
|
|
if (cachep->dtor) {
|
|
int i;
|
|
int i;
|
|
for (i = 0; i < cachep->num; i++) {
|
|
for (i = 0; i < cachep->num; i++) {
|
|
- void* objp = slabp->s_mem+cachep->objsize*i;
|
|
|
|
- (cachep->dtor)(objp, cachep, 0);
|
|
|
|
|
|
+ void *objp = slabp->s_mem + cachep->objsize * i;
|
|
|
|
+ (cachep->dtor) (objp, cachep, 0);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
#endif
|
|
@@ -1448,7 +1463,7 @@ static void slab_destroy (kmem_cache_t *cachep, struct slab *slabp)
|
|
if (unlikely(cachep->flags & SLAB_DESTROY_BY_RCU)) {
|
|
if (unlikely(cachep->flags & SLAB_DESTROY_BY_RCU)) {
|
|
struct slab_rcu *slab_rcu;
|
|
struct slab_rcu *slab_rcu;
|
|
|
|
|
|
- slab_rcu = (struct slab_rcu *) slabp;
|
|
|
|
|
|
+ slab_rcu = (struct slab_rcu *)slabp;
|
|
slab_rcu->cachep = cachep;
|
|
slab_rcu->cachep = cachep;
|
|
slab_rcu->addr = addr;
|
|
slab_rcu->addr = addr;
|
|
call_rcu(&slab_rcu->head, kmem_rcu_free);
|
|
call_rcu(&slab_rcu->head, kmem_rcu_free);
|
|
@@ -1466,10 +1481,10 @@ static inline void set_up_list3s(kmem_cache_t *cachep, int index)
|
|
int node;
|
|
int node;
|
|
|
|
|
|
for_each_online_node(node) {
|
|
for_each_online_node(node) {
|
|
- cachep->nodelists[node] = &initkmem_list3[index+node];
|
|
|
|
|
|
+ cachep->nodelists[node] = &initkmem_list3[index + node];
|
|
cachep->nodelists[node]->next_reap = jiffies +
|
|
cachep->nodelists[node]->next_reap = jiffies +
|
|
- REAPTIMEOUT_LIST3 +
|
|
|
|
- ((unsigned long)cachep)%REAPTIMEOUT_LIST3;
|
|
|
|
|
|
+ REAPTIMEOUT_LIST3 +
|
|
|
|
+ ((unsigned long)cachep) % REAPTIMEOUT_LIST3;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
@@ -1486,7 +1501,7 @@ static inline size_t calculate_slab_order(kmem_cache_t *cachep, size_t size,
|
|
{
|
|
{
|
|
size_t left_over = 0;
|
|
size_t left_over = 0;
|
|
|
|
|
|
- for ( ; ; cachep->gfporder++) {
|
|
|
|
|
|
+ for (;; cachep->gfporder++) {
|
|
unsigned int num;
|
|
unsigned int num;
|
|
size_t remainder;
|
|
size_t remainder;
|
|
|
|
|
|
@@ -1566,14 +1581,13 @@ kmem_cache_create (const char *name, size_t size, size_t align,
|
|
* Sanity checks... these are all serious usage bugs.
|
|
* Sanity checks... these are all serious usage bugs.
|
|
*/
|
|
*/
|
|
if ((!name) ||
|
|
if ((!name) ||
|
|
- in_interrupt() ||
|
|
|
|
- (size < BYTES_PER_WORD) ||
|
|
|
|
- (size > (1<<MAX_OBJ_ORDER)*PAGE_SIZE) ||
|
|
|
|
- (dtor && !ctor)) {
|
|
|
|
- printk(KERN_ERR "%s: Early error in slab %s\n",
|
|
|
|
- __FUNCTION__, name);
|
|
|
|
- BUG();
|
|
|
|
- }
|
|
|
|
|
|
+ in_interrupt() ||
|
|
|
|
+ (size < BYTES_PER_WORD) ||
|
|
|
|
+ (size > (1 << MAX_OBJ_ORDER) * PAGE_SIZE) || (dtor && !ctor)) {
|
|
|
|
+ printk(KERN_ERR "%s: Early error in slab %s\n",
|
|
|
|
+ __FUNCTION__, name);
|
|
|
|
+ BUG();
|
|
|
|
+ }
|
|
|
|
|
|
down(&cache_chain_sem);
|
|
down(&cache_chain_sem);
|
|
|
|
|
|
@@ -1593,11 +1607,11 @@ kmem_cache_create (const char *name, size_t size, size_t align,
|
|
set_fs(old_fs);
|
|
set_fs(old_fs);
|
|
if (res) {
|
|
if (res) {
|
|
printk("SLAB: cache with size %d has lost its name\n",
|
|
printk("SLAB: cache with size %d has lost its name\n",
|
|
- pc->objsize);
|
|
|
|
|
|
+ pc->objsize);
|
|
continue;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
|
|
- if (!strcmp(pc->name,name)) {
|
|
|
|
|
|
+ if (!strcmp(pc->name, name)) {
|
|
printk("kmem_cache_create: duplicate cache %s\n", name);
|
|
printk("kmem_cache_create: duplicate cache %s\n", name);
|
|
dump_stack();
|
|
dump_stack();
|
|
goto oops;
|
|
goto oops;
|
|
@@ -1609,10 +1623,9 @@ kmem_cache_create (const char *name, size_t size, size_t align,
|
|
if ((flags & SLAB_DEBUG_INITIAL) && !ctor) {
|
|
if ((flags & SLAB_DEBUG_INITIAL) && !ctor) {
|
|
/* No constructor, but inital state check requested */
|
|
/* No constructor, but inital state check requested */
|
|
printk(KERN_ERR "%s: No con, but init state check "
|
|
printk(KERN_ERR "%s: No con, but init state check "
|
|
- "requested - %s\n", __FUNCTION__, name);
|
|
|
|
|
|
+ "requested - %s\n", __FUNCTION__, name);
|
|
flags &= ~SLAB_DEBUG_INITIAL;
|
|
flags &= ~SLAB_DEBUG_INITIAL;
|
|
}
|
|
}
|
|
-
|
|
|
|
#if FORCED_DEBUG
|
|
#if FORCED_DEBUG
|
|
/*
|
|
/*
|
|
* Enable redzoning and last user accounting, except for caches with
|
|
* Enable redzoning and last user accounting, except for caches with
|
|
@@ -1620,8 +1633,9 @@ kmem_cache_create (const char *name, size_t size, size_t align,
|
|
* above the next power of two: caches with object sizes just above a
|
|
* above the next power of two: caches with object sizes just above a
|
|
* power of two have a significant amount of internal fragmentation.
|
|
* power of two have a significant amount of internal fragmentation.
|
|
*/
|
|
*/
|
|
- if ((size < 4096 || fls(size-1) == fls(size-1+3*BYTES_PER_WORD)))
|
|
|
|
- flags |= SLAB_RED_ZONE|SLAB_STORE_USER;
|
|
|
|
|
|
+ if ((size < 4096
|
|
|
|
+ || fls(size - 1) == fls(size - 1 + 3 * BYTES_PER_WORD)))
|
|
|
|
+ flags |= SLAB_RED_ZONE | SLAB_STORE_USER;
|
|
if (!(flags & SLAB_DESTROY_BY_RCU))
|
|
if (!(flags & SLAB_DESTROY_BY_RCU))
|
|
flags |= SLAB_POISON;
|
|
flags |= SLAB_POISON;
|
|
#endif
|
|
#endif
|
|
@@ -1642,9 +1656,9 @@ kmem_cache_create (const char *name, size_t size, size_t align,
|
|
* unaligned accesses for some archs when redzoning is used, and makes
|
|
* unaligned accesses for some archs when redzoning is used, and makes
|
|
* sure any on-slab bufctl's are also correctly aligned.
|
|
* sure any on-slab bufctl's are also correctly aligned.
|
|
*/
|
|
*/
|
|
- if (size & (BYTES_PER_WORD-1)) {
|
|
|
|
- size += (BYTES_PER_WORD-1);
|
|
|
|
- size &= ~(BYTES_PER_WORD-1);
|
|
|
|
|
|
+ if (size & (BYTES_PER_WORD - 1)) {
|
|
|
|
+ size += (BYTES_PER_WORD - 1);
|
|
|
|
+ size &= ~(BYTES_PER_WORD - 1);
|
|
}
|
|
}
|
|
|
|
|
|
/* calculate out the final buffer alignment: */
|
|
/* calculate out the final buffer alignment: */
|
|
@@ -1655,7 +1669,7 @@ kmem_cache_create (const char *name, size_t size, size_t align,
|
|
* objects into one cacheline.
|
|
* objects into one cacheline.
|
|
*/
|
|
*/
|
|
ralign = cache_line_size();
|
|
ralign = cache_line_size();
|
|
- while (size <= ralign/2)
|
|
|
|
|
|
+ while (size <= ralign / 2)
|
|
ralign /= 2;
|
|
ralign /= 2;
|
|
} else {
|
|
} else {
|
|
ralign = BYTES_PER_WORD;
|
|
ralign = BYTES_PER_WORD;
|
|
@@ -1664,13 +1678,13 @@ kmem_cache_create (const char *name, size_t size, size_t align,
|
|
if (ralign < ARCH_SLAB_MINALIGN) {
|
|
if (ralign < ARCH_SLAB_MINALIGN) {
|
|
ralign = ARCH_SLAB_MINALIGN;
|
|
ralign = ARCH_SLAB_MINALIGN;
|
|
if (ralign > BYTES_PER_WORD)
|
|
if (ralign > BYTES_PER_WORD)
|
|
- flags &= ~(SLAB_RED_ZONE|SLAB_STORE_USER);
|
|
|
|
|
|
+ flags &= ~(SLAB_RED_ZONE | SLAB_STORE_USER);
|
|
}
|
|
}
|
|
/* 3) caller mandated alignment: disables debug if necessary */
|
|
/* 3) caller mandated alignment: disables debug if necessary */
|
|
if (ralign < align) {
|
|
if (ralign < align) {
|
|
ralign = align;
|
|
ralign = align;
|
|
if (ralign > BYTES_PER_WORD)
|
|
if (ralign > BYTES_PER_WORD)
|
|
- flags &= ~(SLAB_RED_ZONE|SLAB_STORE_USER);
|
|
|
|
|
|
+ flags &= ~(SLAB_RED_ZONE | SLAB_STORE_USER);
|
|
}
|
|
}
|
|
/* 4) Store it. Note that the debug code below can reduce
|
|
/* 4) Store it. Note that the debug code below can reduce
|
|
* the alignment to BYTES_PER_WORD.
|
|
* the alignment to BYTES_PER_WORD.
|
|
@@ -1692,7 +1706,7 @@ kmem_cache_create (const char *name, size_t size, size_t align,
|
|
|
|
|
|
/* add space for red zone words */
|
|
/* add space for red zone words */
|
|
cachep->dbghead += BYTES_PER_WORD;
|
|
cachep->dbghead += BYTES_PER_WORD;
|
|
- size += 2*BYTES_PER_WORD;
|
|
|
|
|
|
+ size += 2 * BYTES_PER_WORD;
|
|
}
|
|
}
|
|
if (flags & SLAB_STORE_USER) {
|
|
if (flags & SLAB_STORE_USER) {
|
|
/* user store requires word alignment and
|
|
/* user store requires word alignment and
|
|
@@ -1703,7 +1717,8 @@ kmem_cache_create (const char *name, size_t size, size_t align,
|
|
size += BYTES_PER_WORD;
|
|
size += BYTES_PER_WORD;
|
|
}
|
|
}
|
|
#if FORCED_DEBUG && defined(CONFIG_DEBUG_PAGEALLOC)
|
|
#if FORCED_DEBUG && defined(CONFIG_DEBUG_PAGEALLOC)
|
|
- if (size >= malloc_sizes[INDEX_L3+1].cs_size && cachep->reallen > cache_line_size() && size < PAGE_SIZE) {
|
|
|
|
|
|
+ if (size >= malloc_sizes[INDEX_L3 + 1].cs_size
|
|
|
|
+ && cachep->reallen > cache_line_size() && size < PAGE_SIZE) {
|
|
cachep->dbghead += PAGE_SIZE - size;
|
|
cachep->dbghead += PAGE_SIZE - size;
|
|
size = PAGE_SIZE;
|
|
size = PAGE_SIZE;
|
|
}
|
|
}
|
|
@@ -1711,7 +1726,7 @@ kmem_cache_create (const char *name, size_t size, size_t align,
|
|
#endif
|
|
#endif
|
|
|
|
|
|
/* Determine if the slab management is 'on' or 'off' slab. */
|
|
/* Determine if the slab management is 'on' or 'off' slab. */
|
|
- if (size >= (PAGE_SIZE>>3))
|
|
|
|
|
|
+ if (size >= (PAGE_SIZE >> 3))
|
|
/*
|
|
/*
|
|
* Size is large, assume best to place the slab management obj
|
|
* Size is large, assume best to place the slab management obj
|
|
* off-slab (should allow better packing of objs).
|
|
* off-slab (should allow better packing of objs).
|
|
@@ -1728,7 +1743,7 @@ kmem_cache_create (const char *name, size_t size, size_t align,
|
|
*/
|
|
*/
|
|
cachep->gfporder = 0;
|
|
cachep->gfporder = 0;
|
|
cache_estimate(cachep->gfporder, size, align, flags,
|
|
cache_estimate(cachep->gfporder, size, align, flags,
|
|
- &left_over, &cachep->num);
|
|
|
|
|
|
+ &left_over, &cachep->num);
|
|
} else
|
|
} else
|
|
left_over = calculate_slab_order(cachep, size, align, flags);
|
|
left_over = calculate_slab_order(cachep, size, align, flags);
|
|
|
|
|
|
@@ -1738,8 +1753,8 @@ kmem_cache_create (const char *name, size_t size, size_t align,
|
|
cachep = NULL;
|
|
cachep = NULL;
|
|
goto oops;
|
|
goto oops;
|
|
}
|
|
}
|
|
- slab_size = ALIGN(cachep->num*sizeof(kmem_bufctl_t)
|
|
|
|
- + sizeof(struct slab), align);
|
|
|
|
|
|
+ slab_size = ALIGN(cachep->num * sizeof(kmem_bufctl_t)
|
|
|
|
+ + sizeof(struct slab), align);
|
|
|
|
|
|
/*
|
|
/*
|
|
* If the slab has been placed off-slab, and we have enough space then
|
|
* If the slab has been placed off-slab, and we have enough space then
|
|
@@ -1752,14 +1767,15 @@ kmem_cache_create (const char *name, size_t size, size_t align,
|
|
|
|
|
|
if (flags & CFLGS_OFF_SLAB) {
|
|
if (flags & CFLGS_OFF_SLAB) {
|
|
/* really off slab. No need for manual alignment */
|
|
/* really off slab. No need for manual alignment */
|
|
- slab_size = cachep->num*sizeof(kmem_bufctl_t)+sizeof(struct slab);
|
|
|
|
|
|
+ slab_size =
|
|
|
|
+ cachep->num * sizeof(kmem_bufctl_t) + sizeof(struct slab);
|
|
}
|
|
}
|
|
|
|
|
|
cachep->colour_off = cache_line_size();
|
|
cachep->colour_off = cache_line_size();
|
|
/* Offset must be a multiple of the alignment. */
|
|
/* Offset must be a multiple of the alignment. */
|
|
if (cachep->colour_off < align)
|
|
if (cachep->colour_off < align)
|
|
cachep->colour_off = align;
|
|
cachep->colour_off = align;
|
|
- cachep->colour = left_over/cachep->colour_off;
|
|
|
|
|
|
+ cachep->colour = left_over / cachep->colour_off;
|
|
cachep->slab_size = slab_size;
|
|
cachep->slab_size = slab_size;
|
|
cachep->flags = flags;
|
|
cachep->flags = flags;
|
|
cachep->gfpflags = 0;
|
|
cachep->gfpflags = 0;
|
|
@@ -1786,7 +1802,7 @@ kmem_cache_create (const char *name, size_t size, size_t align,
|
|
* the creation of further caches will BUG().
|
|
* the creation of further caches will BUG().
|
|
*/
|
|
*/
|
|
cachep->array[smp_processor_id()] =
|
|
cachep->array[smp_processor_id()] =
|
|
- &initarray_generic.cache;
|
|
|
|
|
|
+ &initarray_generic.cache;
|
|
|
|
|
|
/* If the cache that's used by
|
|
/* If the cache that's used by
|
|
* kmalloc(sizeof(kmem_list3)) is the first cache,
|
|
* kmalloc(sizeof(kmem_list3)) is the first cache,
|
|
@@ -1800,8 +1816,7 @@ kmem_cache_create (const char *name, size_t size, size_t align,
|
|
g_cpucache_up = PARTIAL_AC;
|
|
g_cpucache_up = PARTIAL_AC;
|
|
} else {
|
|
} else {
|
|
cachep->array[smp_processor_id()] =
|
|
cachep->array[smp_processor_id()] =
|
|
- kmalloc(sizeof(struct arraycache_init),
|
|
|
|
- GFP_KERNEL);
|
|
|
|
|
|
+ kmalloc(sizeof(struct arraycache_init), GFP_KERNEL);
|
|
|
|
|
|
if (g_cpucache_up == PARTIAL_AC) {
|
|
if (g_cpucache_up == PARTIAL_AC) {
|
|
set_up_list3s(cachep, SIZE_L3);
|
|
set_up_list3s(cachep, SIZE_L3);
|
|
@@ -1811,16 +1826,18 @@ kmem_cache_create (const char *name, size_t size, size_t align,
|
|
for_each_online_node(node) {
|
|
for_each_online_node(node) {
|
|
|
|
|
|
cachep->nodelists[node] =
|
|
cachep->nodelists[node] =
|
|
- kmalloc_node(sizeof(struct kmem_list3),
|
|
|
|
- GFP_KERNEL, node);
|
|
|
|
|
|
+ kmalloc_node(sizeof
|
|
|
|
+ (struct kmem_list3),
|
|
|
|
+ GFP_KERNEL, node);
|
|
BUG_ON(!cachep->nodelists[node]);
|
|
BUG_ON(!cachep->nodelists[node]);
|
|
- kmem_list3_init(cachep->nodelists[node]);
|
|
|
|
|
|
+ kmem_list3_init(cachep->
|
|
|
|
+ nodelists[node]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
cachep->nodelists[numa_node_id()]->next_reap =
|
|
cachep->nodelists[numa_node_id()]->next_reap =
|
|
- jiffies + REAPTIMEOUT_LIST3 +
|
|
|
|
- ((unsigned long)cachep)%REAPTIMEOUT_LIST3;
|
|
|
|
|
|
+ jiffies + REAPTIMEOUT_LIST3 +
|
|
|
|
+ ((unsigned long)cachep) % REAPTIMEOUT_LIST3;
|
|
|
|
|
|
BUG_ON(!ac_data(cachep));
|
|
BUG_ON(!ac_data(cachep));
|
|
ac_data(cachep)->avail = 0;
|
|
ac_data(cachep)->avail = 0;
|
|
@@ -1829,15 +1846,15 @@ kmem_cache_create (const char *name, size_t size, size_t align,
|
|
ac_data(cachep)->touched = 0;
|
|
ac_data(cachep)->touched = 0;
|
|
cachep->batchcount = 1;
|
|
cachep->batchcount = 1;
|
|
cachep->limit = BOOT_CPUCACHE_ENTRIES;
|
|
cachep->limit = BOOT_CPUCACHE_ENTRIES;
|
|
- }
|
|
|
|
|
|
+ }
|
|
|
|
|
|
/* cache setup completed, link it into the list */
|
|
/* cache setup completed, link it into the list */
|
|
list_add(&cachep->next, &cache_chain);
|
|
list_add(&cachep->next, &cache_chain);
|
|
unlock_cpu_hotplug();
|
|
unlock_cpu_hotplug();
|
|
-oops:
|
|
|
|
|
|
+ oops:
|
|
if (!cachep && (flags & SLAB_PANIC))
|
|
if (!cachep && (flags & SLAB_PANIC))
|
|
panic("kmem_cache_create(): failed to create slab `%s'\n",
|
|
panic("kmem_cache_create(): failed to create slab `%s'\n",
|
|
- name);
|
|
|
|
|
|
+ name);
|
|
up(&cache_chain_sem);
|
|
up(&cache_chain_sem);
|
|
return cachep;
|
|
return cachep;
|
|
}
|
|
}
|
|
@@ -1880,7 +1897,7 @@ static inline void check_spinlock_acquired_node(kmem_cache_t *cachep, int node)
|
|
/*
|
|
/*
|
|
* Waits for all CPUs to execute func().
|
|
* Waits for all CPUs to execute func().
|
|
*/
|
|
*/
|
|
-static void smp_call_function_all_cpus(void (*func) (void *arg), void *arg)
|
|
|
|
|
|
+static void smp_call_function_all_cpus(void (*func)(void *arg), void *arg)
|
|
{
|
|
{
|
|
check_irq_on();
|
|
check_irq_on();
|
|
preempt_disable();
|
|
preempt_disable();
|
|
@@ -1895,12 +1912,12 @@ static void smp_call_function_all_cpus(void (*func) (void *arg), void *arg)
|
|
preempt_enable();
|
|
preempt_enable();
|
|
}
|
|
}
|
|
|
|
|
|
-static void drain_array_locked(kmem_cache_t* cachep,
|
|
|
|
- struct array_cache *ac, int force, int node);
|
|
|
|
|
|
+static void drain_array_locked(kmem_cache_t *cachep, struct array_cache *ac,
|
|
|
|
+ int force, int node);
|
|
|
|
|
|
static void do_drain(void *arg)
|
|
static void do_drain(void *arg)
|
|
{
|
|
{
|
|
- kmem_cache_t *cachep = (kmem_cache_t*)arg;
|
|
|
|
|
|
+ kmem_cache_t *cachep = (kmem_cache_t *) arg;
|
|
struct array_cache *ac;
|
|
struct array_cache *ac;
|
|
int node = numa_node_id();
|
|
int node = numa_node_id();
|
|
|
|
|
|
@@ -1920,7 +1937,7 @@ static void drain_cpu_caches(kmem_cache_t *cachep)
|
|
smp_call_function_all_cpus(do_drain, cachep);
|
|
smp_call_function_all_cpus(do_drain, cachep);
|
|
check_irq_on();
|
|
check_irq_on();
|
|
spin_lock_irq(&cachep->spinlock);
|
|
spin_lock_irq(&cachep->spinlock);
|
|
- for_each_online_node(node) {
|
|
|
|
|
|
+ for_each_online_node(node) {
|
|
l3 = cachep->nodelists[node];
|
|
l3 = cachep->nodelists[node];
|
|
if (l3) {
|
|
if (l3) {
|
|
spin_lock(&l3->list_lock);
|
|
spin_lock(&l3->list_lock);
|
|
@@ -1958,8 +1975,7 @@ static int __node_shrink(kmem_cache_t *cachep, int node)
|
|
slab_destroy(cachep, slabp);
|
|
slab_destroy(cachep, slabp);
|
|
spin_lock_irq(&l3->list_lock);
|
|
spin_lock_irq(&l3->list_lock);
|
|
}
|
|
}
|
|
- ret = !list_empty(&l3->slabs_full) ||
|
|
|
|
- !list_empty(&l3->slabs_partial);
|
|
|
|
|
|
+ ret = !list_empty(&l3->slabs_full) || !list_empty(&l3->slabs_partial);
|
|
return ret;
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
|
|
@@ -2015,7 +2031,7 @@ EXPORT_SYMBOL(kmem_cache_shrink);
|
|
* The caller must guarantee that noone will allocate memory from the cache
|
|
* The caller must guarantee that noone will allocate memory from the cache
|
|
* during the kmem_cache_destroy().
|
|
* during the kmem_cache_destroy().
|
|
*/
|
|
*/
|
|
-int kmem_cache_destroy(kmem_cache_t * cachep)
|
|
|
|
|
|
+int kmem_cache_destroy(kmem_cache_t *cachep)
|
|
{
|
|
{
|
|
int i;
|
|
int i;
|
|
struct kmem_list3 *l3;
|
|
struct kmem_list3 *l3;
|
|
@@ -2037,7 +2053,7 @@ int kmem_cache_destroy(kmem_cache_t * cachep)
|
|
if (__cache_shrink(cachep)) {
|
|
if (__cache_shrink(cachep)) {
|
|
slab_error(cachep, "Can't free all objects");
|
|
slab_error(cachep, "Can't free all objects");
|
|
down(&cache_chain_sem);
|
|
down(&cache_chain_sem);
|
|
- list_add(&cachep->next,&cache_chain);
|
|
|
|
|
|
+ list_add(&cachep->next, &cache_chain);
|
|
up(&cache_chain_sem);
|
|
up(&cache_chain_sem);
|
|
unlock_cpu_hotplug();
|
|
unlock_cpu_hotplug();
|
|
return 1;
|
|
return 1;
|
|
@@ -2047,7 +2063,7 @@ int kmem_cache_destroy(kmem_cache_t * cachep)
|
|
synchronize_rcu();
|
|
synchronize_rcu();
|
|
|
|
|
|
for_each_online_cpu(i)
|
|
for_each_online_cpu(i)
|
|
- kfree(cachep->array[i]);
|
|
|
|
|
|
+ kfree(cachep->array[i]);
|
|
|
|
|
|
/* NUMA: free the list3 structures */
|
|
/* NUMA: free the list3 structures */
|
|
for_each_online_node(i) {
|
|
for_each_online_node(i) {
|
|
@@ -2066,39 +2082,39 @@ int kmem_cache_destroy(kmem_cache_t * cachep)
|
|
EXPORT_SYMBOL(kmem_cache_destroy);
|
|
EXPORT_SYMBOL(kmem_cache_destroy);
|
|
|
|
|
|
/* Get the memory for a slab management obj. */
|
|
/* Get the memory for a slab management obj. */
|
|
-static struct slab* alloc_slabmgmt(kmem_cache_t *cachep, void *objp,
|
|
|
|
- int colour_off, gfp_t local_flags)
|
|
|
|
|
|
+static struct slab *alloc_slabmgmt(kmem_cache_t *cachep, void *objp,
|
|
|
|
+ int colour_off, gfp_t local_flags)
|
|
{
|
|
{
|
|
struct slab *slabp;
|
|
struct slab *slabp;
|
|
-
|
|
|
|
|
|
+
|
|
if (OFF_SLAB(cachep)) {
|
|
if (OFF_SLAB(cachep)) {
|
|
/* Slab management obj is off-slab. */
|
|
/* Slab management obj is off-slab. */
|
|
slabp = kmem_cache_alloc(cachep->slabp_cache, local_flags);
|
|
slabp = kmem_cache_alloc(cachep->slabp_cache, local_flags);
|
|
if (!slabp)
|
|
if (!slabp)
|
|
return NULL;
|
|
return NULL;
|
|
} else {
|
|
} else {
|
|
- slabp = objp+colour_off;
|
|
|
|
|
|
+ slabp = objp + colour_off;
|
|
colour_off += cachep->slab_size;
|
|
colour_off += cachep->slab_size;
|
|
}
|
|
}
|
|
slabp->inuse = 0;
|
|
slabp->inuse = 0;
|
|
slabp->colouroff = colour_off;
|
|
slabp->colouroff = colour_off;
|
|
- slabp->s_mem = objp+colour_off;
|
|
|
|
|
|
+ slabp->s_mem = objp + colour_off;
|
|
|
|
|
|
return slabp;
|
|
return slabp;
|
|
}
|
|
}
|
|
|
|
|
|
static inline kmem_bufctl_t *slab_bufctl(struct slab *slabp)
|
|
static inline kmem_bufctl_t *slab_bufctl(struct slab *slabp)
|
|
{
|
|
{
|
|
- return (kmem_bufctl_t *)(slabp+1);
|
|
|
|
|
|
+ return (kmem_bufctl_t *) (slabp + 1);
|
|
}
|
|
}
|
|
|
|
|
|
static void cache_init_objs(kmem_cache_t *cachep,
|
|
static void cache_init_objs(kmem_cache_t *cachep,
|
|
- struct slab *slabp, unsigned long ctor_flags)
|
|
|
|
|
|
+ struct slab *slabp, unsigned long ctor_flags)
|
|
{
|
|
{
|
|
int i;
|
|
int i;
|
|
|
|
|
|
for (i = 0; i < cachep->num; i++) {
|
|
for (i = 0; i < cachep->num; i++) {
|
|
- void *objp = slabp->s_mem+cachep->objsize*i;
|
|
|
|
|
|
+ void *objp = slabp->s_mem + cachep->objsize * i;
|
|
#if DEBUG
|
|
#if DEBUG
|
|
/* need to poison the objs? */
|
|
/* need to poison the objs? */
|
|
if (cachep->flags & SLAB_POISON)
|
|
if (cachep->flags & SLAB_POISON)
|
|
@@ -2116,25 +2132,28 @@ static void cache_init_objs(kmem_cache_t *cachep,
|
|
* Otherwise, deadlock. They must also be threaded.
|
|
* Otherwise, deadlock. They must also be threaded.
|
|
*/
|
|
*/
|
|
if (cachep->ctor && !(cachep->flags & SLAB_POISON))
|
|
if (cachep->ctor && !(cachep->flags & SLAB_POISON))
|
|
- cachep->ctor(objp+obj_dbghead(cachep), cachep, ctor_flags);
|
|
|
|
|
|
+ cachep->ctor(objp + obj_dbghead(cachep), cachep,
|
|
|
|
+ ctor_flags);
|
|
|
|
|
|
if (cachep->flags & SLAB_RED_ZONE) {
|
|
if (cachep->flags & SLAB_RED_ZONE) {
|
|
if (*dbg_redzone2(cachep, objp) != RED_INACTIVE)
|
|
if (*dbg_redzone2(cachep, objp) != RED_INACTIVE)
|
|
slab_error(cachep, "constructor overwrote the"
|
|
slab_error(cachep, "constructor overwrote the"
|
|
- " end of an object");
|
|
|
|
|
|
+ " end of an object");
|
|
if (*dbg_redzone1(cachep, objp) != RED_INACTIVE)
|
|
if (*dbg_redzone1(cachep, objp) != RED_INACTIVE)
|
|
slab_error(cachep, "constructor overwrote the"
|
|
slab_error(cachep, "constructor overwrote the"
|
|
- " start of an object");
|
|
|
|
|
|
+ " start of an object");
|
|
}
|
|
}
|
|
- if ((cachep->objsize % PAGE_SIZE) == 0 && OFF_SLAB(cachep) && cachep->flags & SLAB_POISON)
|
|
|
|
- kernel_map_pages(virt_to_page(objp), cachep->objsize/PAGE_SIZE, 0);
|
|
|
|
|
|
+ if ((cachep->objsize % PAGE_SIZE) == 0 && OFF_SLAB(cachep)
|
|
|
|
+ && cachep->flags & SLAB_POISON)
|
|
|
|
+ kernel_map_pages(virt_to_page(objp),
|
|
|
|
+ cachep->objsize / PAGE_SIZE, 0);
|
|
#else
|
|
#else
|
|
if (cachep->ctor)
|
|
if (cachep->ctor)
|
|
cachep->ctor(objp, cachep, ctor_flags);
|
|
cachep->ctor(objp, cachep, ctor_flags);
|
|
#endif
|
|
#endif
|
|
- slab_bufctl(slabp)[i] = i+1;
|
|
|
|
|
|
+ slab_bufctl(slabp)[i] = i + 1;
|
|
}
|
|
}
|
|
- slab_bufctl(slabp)[i-1] = BUFCTL_END;
|
|
|
|
|
|
+ slab_bufctl(slabp)[i - 1] = BUFCTL_END;
|
|
slabp->free = 0;
|
|
slabp->free = 0;
|
|
}
|
|
}
|
|
|
|
|
|
@@ -2170,17 +2189,17 @@ static void set_slab_attr(kmem_cache_t *cachep, struct slab *slabp, void *objp)
|
|
*/
|
|
*/
|
|
static int cache_grow(kmem_cache_t *cachep, gfp_t flags, int nodeid)
|
|
static int cache_grow(kmem_cache_t *cachep, gfp_t flags, int nodeid)
|
|
{
|
|
{
|
|
- struct slab *slabp;
|
|
|
|
- void *objp;
|
|
|
|
- size_t offset;
|
|
|
|
- gfp_t local_flags;
|
|
|
|
- unsigned long ctor_flags;
|
|
|
|
|
|
+ struct slab *slabp;
|
|
|
|
+ void *objp;
|
|
|
|
+ size_t offset;
|
|
|
|
+ gfp_t local_flags;
|
|
|
|
+ unsigned long ctor_flags;
|
|
struct kmem_list3 *l3;
|
|
struct kmem_list3 *l3;
|
|
|
|
|
|
/* Be lazy and only check for valid flags here,
|
|
/* Be lazy and only check for valid flags here,
|
|
- * keeping it out of the critical path in kmem_cache_alloc().
|
|
|
|
|
|
+ * keeping it out of the critical path in kmem_cache_alloc().
|
|
*/
|
|
*/
|
|
- if (flags & ~(SLAB_DMA|SLAB_LEVEL_MASK|SLAB_NO_GROW))
|
|
|
|
|
|
+ if (flags & ~(SLAB_DMA | SLAB_LEVEL_MASK | SLAB_NO_GROW))
|
|
BUG();
|
|
BUG();
|
|
if (flags & SLAB_NO_GROW)
|
|
if (flags & SLAB_NO_GROW)
|
|
return 0;
|
|
return 0;
|
|
@@ -2246,9 +2265,9 @@ static int cache_grow(kmem_cache_t *cachep, gfp_t flags, int nodeid)
|
|
l3->free_objects += cachep->num;
|
|
l3->free_objects += cachep->num;
|
|
spin_unlock(&l3->list_lock);
|
|
spin_unlock(&l3->list_lock);
|
|
return 1;
|
|
return 1;
|
|
-opps1:
|
|
|
|
|
|
+ opps1:
|
|
kmem_freepages(cachep, objp);
|
|
kmem_freepages(cachep, objp);
|
|
-failed:
|
|
|
|
|
|
+ failed:
|
|
if (local_flags & __GFP_WAIT)
|
|
if (local_flags & __GFP_WAIT)
|
|
local_irq_disable();
|
|
local_irq_disable();
|
|
return 0;
|
|
return 0;
|
|
@@ -2268,18 +2287,19 @@ static void kfree_debugcheck(const void *objp)
|
|
|
|
|
|
if (!virt_addr_valid(objp)) {
|
|
if (!virt_addr_valid(objp)) {
|
|
printk(KERN_ERR "kfree_debugcheck: out of range ptr %lxh.\n",
|
|
printk(KERN_ERR "kfree_debugcheck: out of range ptr %lxh.\n",
|
|
- (unsigned long)objp);
|
|
|
|
- BUG();
|
|
|
|
|
|
+ (unsigned long)objp);
|
|
|
|
+ BUG();
|
|
}
|
|
}
|
|
page = virt_to_page(objp);
|
|
page = virt_to_page(objp);
|
|
if (!PageSlab(page)) {
|
|
if (!PageSlab(page)) {
|
|
- printk(KERN_ERR "kfree_debugcheck: bad ptr %lxh.\n", (unsigned long)objp);
|
|
|
|
|
|
+ printk(KERN_ERR "kfree_debugcheck: bad ptr %lxh.\n",
|
|
|
|
+ (unsigned long)objp);
|
|
BUG();
|
|
BUG();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static void *cache_free_debugcheck(kmem_cache_t *cachep, void *objp,
|
|
static void *cache_free_debugcheck(kmem_cache_t *cachep, void *objp,
|
|
- void *caller)
|
|
|
|
|
|
+ void *caller)
|
|
{
|
|
{
|
|
struct page *page;
|
|
struct page *page;
|
|
unsigned int objnr;
|
|
unsigned int objnr;
|
|
@@ -2290,20 +2310,26 @@ static void *cache_free_debugcheck(kmem_cache_t *cachep, void *objp,
|
|
page = virt_to_page(objp);
|
|
page = virt_to_page(objp);
|
|
|
|
|
|
if (page_get_cache(page) != cachep) {
|
|
if (page_get_cache(page) != cachep) {
|
|
- printk(KERN_ERR "mismatch in kmem_cache_free: expected cache %p, got %p\n",
|
|
|
|
- page_get_cache(page),cachep);
|
|
|
|
|
|
+ printk(KERN_ERR
|
|
|
|
+ "mismatch in kmem_cache_free: expected cache %p, got %p\n",
|
|
|
|
+ page_get_cache(page), cachep);
|
|
printk(KERN_ERR "%p is %s.\n", cachep, cachep->name);
|
|
printk(KERN_ERR "%p is %s.\n", cachep, cachep->name);
|
|
- printk(KERN_ERR "%p is %s.\n", page_get_cache(page), page_get_cache(page)->name);
|
|
|
|
|
|
+ printk(KERN_ERR "%p is %s.\n", page_get_cache(page),
|
|
|
|
+ page_get_cache(page)->name);
|
|
WARN_ON(1);
|
|
WARN_ON(1);
|
|
}
|
|
}
|
|
slabp = page_get_slab(page);
|
|
slabp = page_get_slab(page);
|
|
|
|
|
|
if (cachep->flags & SLAB_RED_ZONE) {
|
|
if (cachep->flags & SLAB_RED_ZONE) {
|
|
- if (*dbg_redzone1(cachep, objp) != RED_ACTIVE || *dbg_redzone2(cachep, objp) != RED_ACTIVE) {
|
|
|
|
- slab_error(cachep, "double free, or memory outside"
|
|
|
|
- " object was overwritten");
|
|
|
|
- printk(KERN_ERR "%p: redzone 1: 0x%lx, redzone 2: 0x%lx.\n",
|
|
|
|
- objp, *dbg_redzone1(cachep, objp), *dbg_redzone2(cachep, objp));
|
|
|
|
|
|
+ if (*dbg_redzone1(cachep, objp) != RED_ACTIVE
|
|
|
|
+ || *dbg_redzone2(cachep, objp) != RED_ACTIVE) {
|
|
|
|
+ slab_error(cachep,
|
|
|
|
+ "double free, or memory outside"
|
|
|
|
+ " object was overwritten");
|
|
|
|
+ printk(KERN_ERR
|
|
|
|
+ "%p: redzone 1: 0x%lx, redzone 2: 0x%lx.\n",
|
|
|
|
+ objp, *dbg_redzone1(cachep, objp),
|
|
|
|
+ *dbg_redzone2(cachep, objp));
|
|
}
|
|
}
|
|
*dbg_redzone1(cachep, objp) = RED_INACTIVE;
|
|
*dbg_redzone1(cachep, objp) = RED_INACTIVE;
|
|
*dbg_redzone2(cachep, objp) = RED_INACTIVE;
|
|
*dbg_redzone2(cachep, objp) = RED_INACTIVE;
|
|
@@ -2311,30 +2337,31 @@ static void *cache_free_debugcheck(kmem_cache_t *cachep, void *objp,
|
|
if (cachep->flags & SLAB_STORE_USER)
|
|
if (cachep->flags & SLAB_STORE_USER)
|
|
*dbg_userword(cachep, objp) = caller;
|
|
*dbg_userword(cachep, objp) = caller;
|
|
|
|
|
|
- objnr = (objp-slabp->s_mem)/cachep->objsize;
|
|
|
|
|
|
+ objnr = (objp - slabp->s_mem) / cachep->objsize;
|
|
|
|
|
|
BUG_ON(objnr >= cachep->num);
|
|
BUG_ON(objnr >= cachep->num);
|
|
- BUG_ON(objp != slabp->s_mem + objnr*cachep->objsize);
|
|
|
|
|
|
+ BUG_ON(objp != slabp->s_mem + objnr * cachep->objsize);
|
|
|
|
|
|
if (cachep->flags & SLAB_DEBUG_INITIAL) {
|
|
if (cachep->flags & SLAB_DEBUG_INITIAL) {
|
|
/* Need to call the slab's constructor so the
|
|
/* Need to call the slab's constructor so the
|
|
* caller can perform a verify of its state (debugging).
|
|
* caller can perform a verify of its state (debugging).
|
|
* Called without the cache-lock held.
|
|
* Called without the cache-lock held.
|
|
*/
|
|
*/
|
|
- cachep->ctor(objp+obj_dbghead(cachep),
|
|
|
|
- cachep, SLAB_CTOR_CONSTRUCTOR|SLAB_CTOR_VERIFY);
|
|
|
|
|
|
+ cachep->ctor(objp + obj_dbghead(cachep),
|
|
|
|
+ cachep, SLAB_CTOR_CONSTRUCTOR | SLAB_CTOR_VERIFY);
|
|
}
|
|
}
|
|
if (cachep->flags & SLAB_POISON && cachep->dtor) {
|
|
if (cachep->flags & SLAB_POISON && cachep->dtor) {
|
|
/* we want to cache poison the object,
|
|
/* we want to cache poison the object,
|
|
* call the destruction callback
|
|
* call the destruction callback
|
|
*/
|
|
*/
|
|
- cachep->dtor(objp+obj_dbghead(cachep), cachep, 0);
|
|
|
|
|
|
+ cachep->dtor(objp + obj_dbghead(cachep), cachep, 0);
|
|
}
|
|
}
|
|
if (cachep->flags & SLAB_POISON) {
|
|
if (cachep->flags & SLAB_POISON) {
|
|
#ifdef CONFIG_DEBUG_PAGEALLOC
|
|
#ifdef CONFIG_DEBUG_PAGEALLOC
|
|
if ((cachep->objsize % PAGE_SIZE) == 0 && OFF_SLAB(cachep)) {
|
|
if ((cachep->objsize % PAGE_SIZE) == 0 && OFF_SLAB(cachep)) {
|
|
store_stackinfo(cachep, objp, (unsigned long)caller);
|
|
store_stackinfo(cachep, objp, (unsigned long)caller);
|
|
- kernel_map_pages(virt_to_page(objp), cachep->objsize/PAGE_SIZE, 0);
|
|
|
|
|
|
+ kernel_map_pages(virt_to_page(objp),
|
|
|
|
+ cachep->objsize / PAGE_SIZE, 0);
|
|
} else {
|
|
} else {
|
|
poison_obj(cachep, objp, POISON_FREE);
|
|
poison_obj(cachep, objp, POISON_FREE);
|
|
}
|
|
}
|
|
@@ -2349,7 +2376,7 @@ static void check_slabp(kmem_cache_t *cachep, struct slab *slabp)
|
|
{
|
|
{
|
|
kmem_bufctl_t i;
|
|
kmem_bufctl_t i;
|
|
int entries = 0;
|
|
int entries = 0;
|
|
-
|
|
|
|
|
|
+
|
|
/* Check slab's freelist to see if this obj is there. */
|
|
/* Check slab's freelist to see if this obj is there. */
|
|
for (i = slabp->free; i != BUFCTL_END; i = slab_bufctl(slabp)[i]) {
|
|
for (i = slabp->free; i != BUFCTL_END; i = slab_bufctl(slabp)[i]) {
|
|
entries++;
|
|
entries++;
|
|
@@ -2357,13 +2384,16 @@ static void check_slabp(kmem_cache_t *cachep, struct slab *slabp)
|
|
goto bad;
|
|
goto bad;
|
|
}
|
|
}
|
|
if (entries != cachep->num - slabp->inuse) {
|
|
if (entries != cachep->num - slabp->inuse) {
|
|
-bad:
|
|
|
|
- printk(KERN_ERR "slab: Internal list corruption detected in cache '%s'(%d), slabp %p(%d). Hexdump:\n",
|
|
|
|
- cachep->name, cachep->num, slabp, slabp->inuse);
|
|
|
|
- for (i=0;i<sizeof(slabp)+cachep->num*sizeof(kmem_bufctl_t);i++) {
|
|
|
|
- if ((i%16)==0)
|
|
|
|
|
|
+ bad:
|
|
|
|
+ printk(KERN_ERR
|
|
|
|
+ "slab: Internal list corruption detected in cache '%s'(%d), slabp %p(%d). Hexdump:\n",
|
|
|
|
+ cachep->name, cachep->num, slabp, slabp->inuse);
|
|
|
|
+ for (i = 0;
|
|
|
|
+ i < sizeof(slabp) + cachep->num * sizeof(kmem_bufctl_t);
|
|
|
|
+ i++) {
|
|
|
|
+ if ((i % 16) == 0)
|
|
printk("\n%03x:", i);
|
|
printk("\n%03x:", i);
|
|
- printk(" %02x", ((unsigned char*)slabp)[i]);
|
|
|
|
|
|
+ printk(" %02x", ((unsigned char *)slabp)[i]);
|
|
}
|
|
}
|
|
printk("\n");
|
|
printk("\n");
|
|
BUG();
|
|
BUG();
|
|
@@ -2383,7 +2413,7 @@ static void *cache_alloc_refill(kmem_cache_t *cachep, gfp_t flags)
|
|
|
|
|
|
check_irq_off();
|
|
check_irq_off();
|
|
ac = ac_data(cachep);
|
|
ac = ac_data(cachep);
|
|
-retry:
|
|
|
|
|
|
+ retry:
|
|
batchcount = ac->batchcount;
|
|
batchcount = ac->batchcount;
|
|
if (!ac->touched && batchcount > BATCHREFILL_LIMIT) {
|
|
if (!ac->touched && batchcount > BATCHREFILL_LIMIT) {
|
|
/* if there was little recent activity on this
|
|
/* if there was little recent activity on this
|
|
@@ -2405,8 +2435,8 @@ retry:
|
|
shared_array->avail -= batchcount;
|
|
shared_array->avail -= batchcount;
|
|
ac->avail = batchcount;
|
|
ac->avail = batchcount;
|
|
memcpy(ac->entry,
|
|
memcpy(ac->entry,
|
|
- &(shared_array->entry[shared_array->avail]),
|
|
|
|
- sizeof(void*)*batchcount);
|
|
|
|
|
|
+ &(shared_array->entry[shared_array->avail]),
|
|
|
|
+ sizeof(void *) * batchcount);
|
|
shared_array->touched = 1;
|
|
shared_array->touched = 1;
|
|
goto alloc_done;
|
|
goto alloc_done;
|
|
}
|
|
}
|
|
@@ -2434,7 +2464,7 @@ retry:
|
|
|
|
|
|
/* get obj pointer */
|
|
/* get obj pointer */
|
|
ac->entry[ac->avail++] = slabp->s_mem +
|
|
ac->entry[ac->avail++] = slabp->s_mem +
|
|
- slabp->free*cachep->objsize;
|
|
|
|
|
|
+ slabp->free * cachep->objsize;
|
|
|
|
|
|
slabp->inuse++;
|
|
slabp->inuse++;
|
|
next = slab_bufctl(slabp)[slabp->free];
|
|
next = slab_bufctl(slabp)[slabp->free];
|
|
@@ -2442,7 +2472,7 @@ retry:
|
|
slab_bufctl(slabp)[slabp->free] = BUFCTL_FREE;
|
|
slab_bufctl(slabp)[slabp->free] = BUFCTL_FREE;
|
|
WARN_ON(numa_node_id() != slabp->nodeid);
|
|
WARN_ON(numa_node_id() != slabp->nodeid);
|
|
#endif
|
|
#endif
|
|
- slabp->free = next;
|
|
|
|
|
|
+ slabp->free = next;
|
|
}
|
|
}
|
|
check_slabp(cachep, slabp);
|
|
check_slabp(cachep, slabp);
|
|
|
|
|
|
@@ -2454,9 +2484,9 @@ retry:
|
|
list_add(&slabp->list, &l3->slabs_partial);
|
|
list_add(&slabp->list, &l3->slabs_partial);
|
|
}
|
|
}
|
|
|
|
|
|
-must_grow:
|
|
|
|
|
|
+ must_grow:
|
|
l3->free_objects -= ac->avail;
|
|
l3->free_objects -= ac->avail;
|
|
-alloc_done:
|
|
|
|
|
|
+ alloc_done:
|
|
spin_unlock(&l3->list_lock);
|
|
spin_unlock(&l3->list_lock);
|
|
|
|
|
|
if (unlikely(!ac->avail)) {
|
|
if (unlikely(!ac->avail)) {
|
|
@@ -2468,7 +2498,7 @@ alloc_done:
|
|
if (!x && ac->avail == 0) // no objects in sight? abort
|
|
if (!x && ac->avail == 0) // no objects in sight? abort
|
|
return NULL;
|
|
return NULL;
|
|
|
|
|
|
- if (!ac->avail) // objects refilled by interrupt?
|
|
|
|
|
|
+ if (!ac->avail) // objects refilled by interrupt?
|
|
goto retry;
|
|
goto retry;
|
|
}
|
|
}
|
|
ac->touched = 1;
|
|
ac->touched = 1;
|
|
@@ -2485,16 +2515,16 @@ cache_alloc_debugcheck_before(kmem_cache_t *cachep, gfp_t flags)
|
|
}
|
|
}
|
|
|
|
|
|
#if DEBUG
|
|
#if DEBUG
|
|
-static void *
|
|
|
|
-cache_alloc_debugcheck_after(kmem_cache_t *cachep,
|
|
|
|
- gfp_t flags, void *objp, void *caller)
|
|
|
|
|
|
+static void *cache_alloc_debugcheck_after(kmem_cache_t *cachep, gfp_t flags,
|
|
|
|
+ void *objp, void *caller)
|
|
{
|
|
{
|
|
- if (!objp)
|
|
|
|
|
|
+ if (!objp)
|
|
return objp;
|
|
return objp;
|
|
- if (cachep->flags & SLAB_POISON) {
|
|
|
|
|
|
+ if (cachep->flags & SLAB_POISON) {
|
|
#ifdef CONFIG_DEBUG_PAGEALLOC
|
|
#ifdef CONFIG_DEBUG_PAGEALLOC
|
|
if ((cachep->objsize % PAGE_SIZE) == 0 && OFF_SLAB(cachep))
|
|
if ((cachep->objsize % PAGE_SIZE) == 0 && OFF_SLAB(cachep))
|
|
- kernel_map_pages(virt_to_page(objp), cachep->objsize/PAGE_SIZE, 1);
|
|
|
|
|
|
+ kernel_map_pages(virt_to_page(objp),
|
|
|
|
+ cachep->objsize / PAGE_SIZE, 1);
|
|
else
|
|
else
|
|
check_poison_obj(cachep, objp);
|
|
check_poison_obj(cachep, objp);
|
|
#else
|
|
#else
|
|
@@ -2506,24 +2536,28 @@ cache_alloc_debugcheck_after(kmem_cache_t *cachep,
|
|
*dbg_userword(cachep, objp) = caller;
|
|
*dbg_userword(cachep, objp) = caller;
|
|
|
|
|
|
if (cachep->flags & SLAB_RED_ZONE) {
|
|
if (cachep->flags & SLAB_RED_ZONE) {
|
|
- if (*dbg_redzone1(cachep, objp) != RED_INACTIVE || *dbg_redzone2(cachep, objp) != RED_INACTIVE) {
|
|
|
|
- slab_error(cachep, "double free, or memory outside"
|
|
|
|
- " object was overwritten");
|
|
|
|
- printk(KERN_ERR "%p: redzone 1: 0x%lx, redzone 2: 0x%lx.\n",
|
|
|
|
- objp, *dbg_redzone1(cachep, objp), *dbg_redzone2(cachep, objp));
|
|
|
|
|
|
+ if (*dbg_redzone1(cachep, objp) != RED_INACTIVE
|
|
|
|
+ || *dbg_redzone2(cachep, objp) != RED_INACTIVE) {
|
|
|
|
+ slab_error(cachep,
|
|
|
|
+ "double free, or memory outside"
|
|
|
|
+ " object was overwritten");
|
|
|
|
+ printk(KERN_ERR
|
|
|
|
+ "%p: redzone 1: 0x%lx, redzone 2: 0x%lx.\n",
|
|
|
|
+ objp, *dbg_redzone1(cachep, objp),
|
|
|
|
+ *dbg_redzone2(cachep, objp));
|
|
}
|
|
}
|
|
*dbg_redzone1(cachep, objp) = RED_ACTIVE;
|
|
*dbg_redzone1(cachep, objp) = RED_ACTIVE;
|
|
*dbg_redzone2(cachep, objp) = RED_ACTIVE;
|
|
*dbg_redzone2(cachep, objp) = RED_ACTIVE;
|
|
}
|
|
}
|
|
objp += obj_dbghead(cachep);
|
|
objp += obj_dbghead(cachep);
|
|
if (cachep->ctor && cachep->flags & SLAB_POISON) {
|
|
if (cachep->ctor && cachep->flags & SLAB_POISON) {
|
|
- unsigned long ctor_flags = SLAB_CTOR_CONSTRUCTOR;
|
|
|
|
|
|
+ unsigned long ctor_flags = SLAB_CTOR_CONSTRUCTOR;
|
|
|
|
|
|
if (!(flags & __GFP_WAIT))
|
|
if (!(flags & __GFP_WAIT))
|
|
ctor_flags |= SLAB_CTOR_ATOMIC;
|
|
ctor_flags |= SLAB_CTOR_ATOMIC;
|
|
|
|
|
|
cachep->ctor(objp, cachep, ctor_flags);
|
|
cachep->ctor(objp, cachep, ctor_flags);
|
|
- }
|
|
|
|
|
|
+ }
|
|
return objp;
|
|
return objp;
|
|
}
|
|
}
|
|
#else
|
|
#else
|
|
@@ -2532,7 +2566,7 @@ cache_alloc_debugcheck_after(kmem_cache_t *cachep,
|
|
|
|
|
|
static inline void *____cache_alloc(kmem_cache_t *cachep, gfp_t flags)
|
|
static inline void *____cache_alloc(kmem_cache_t *cachep, gfp_t flags)
|
|
{
|
|
{
|
|
- void* objp;
|
|
|
|
|
|
+ void *objp;
|
|
struct array_cache *ac;
|
|
struct array_cache *ac;
|
|
|
|
|
|
check_irq_off();
|
|
check_irq_off();
|
|
@@ -2551,7 +2585,7 @@ static inline void *____cache_alloc(kmem_cache_t *cachep, gfp_t flags)
|
|
static inline void *__cache_alloc(kmem_cache_t *cachep, gfp_t flags)
|
|
static inline void *__cache_alloc(kmem_cache_t *cachep, gfp_t flags)
|
|
{
|
|
{
|
|
unsigned long save_flags;
|
|
unsigned long save_flags;
|
|
- void* objp;
|
|
|
|
|
|
+ void *objp;
|
|
|
|
|
|
cache_alloc_debugcheck_before(cachep, flags);
|
|
cache_alloc_debugcheck_before(cachep, flags);
|
|
|
|
|
|
@@ -2559,7 +2593,7 @@ static inline void *__cache_alloc(kmem_cache_t *cachep, gfp_t flags)
|
|
objp = ____cache_alloc(cachep, flags);
|
|
objp = ____cache_alloc(cachep, flags);
|
|
local_irq_restore(save_flags);
|
|
local_irq_restore(save_flags);
|
|
objp = cache_alloc_debugcheck_after(cachep, flags, objp,
|
|
objp = cache_alloc_debugcheck_after(cachep, flags, objp,
|
|
- __builtin_return_address(0));
|
|
|
|
|
|
+ __builtin_return_address(0));
|
|
prefetchw(objp);
|
|
prefetchw(objp);
|
|
return objp;
|
|
return objp;
|
|
}
|
|
}
|
|
@@ -2571,74 +2605,75 @@ static inline void *__cache_alloc(kmem_cache_t *cachep, gfp_t flags)
|
|
static void *__cache_alloc_node(kmem_cache_t *cachep, gfp_t flags, int nodeid)
|
|
static void *__cache_alloc_node(kmem_cache_t *cachep, gfp_t flags, int nodeid)
|
|
{
|
|
{
|
|
struct list_head *entry;
|
|
struct list_head *entry;
|
|
- struct slab *slabp;
|
|
|
|
- struct kmem_list3 *l3;
|
|
|
|
- void *obj;
|
|
|
|
- kmem_bufctl_t next;
|
|
|
|
- int x;
|
|
|
|
-
|
|
|
|
- l3 = cachep->nodelists[nodeid];
|
|
|
|
- BUG_ON(!l3);
|
|
|
|
-
|
|
|
|
-retry:
|
|
|
|
- spin_lock(&l3->list_lock);
|
|
|
|
- entry = l3->slabs_partial.next;
|
|
|
|
- if (entry == &l3->slabs_partial) {
|
|
|
|
- l3->free_touched = 1;
|
|
|
|
- entry = l3->slabs_free.next;
|
|
|
|
- if (entry == &l3->slabs_free)
|
|
|
|
- goto must_grow;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- slabp = list_entry(entry, struct slab, list);
|
|
|
|
- check_spinlock_acquired_node(cachep, nodeid);
|
|
|
|
- check_slabp(cachep, slabp);
|
|
|
|
-
|
|
|
|
- STATS_INC_NODEALLOCS(cachep);
|
|
|
|
- STATS_INC_ACTIVE(cachep);
|
|
|
|
- STATS_SET_HIGH(cachep);
|
|
|
|
-
|
|
|
|
- BUG_ON(slabp->inuse == cachep->num);
|
|
|
|
-
|
|
|
|
- /* get obj pointer */
|
|
|
|
- obj = slabp->s_mem + slabp->free*cachep->objsize;
|
|
|
|
- slabp->inuse++;
|
|
|
|
- next = slab_bufctl(slabp)[slabp->free];
|
|
|
|
|
|
+ struct slab *slabp;
|
|
|
|
+ struct kmem_list3 *l3;
|
|
|
|
+ void *obj;
|
|
|
|
+ kmem_bufctl_t next;
|
|
|
|
+ int x;
|
|
|
|
+
|
|
|
|
+ l3 = cachep->nodelists[nodeid];
|
|
|
|
+ BUG_ON(!l3);
|
|
|
|
+
|
|
|
|
+ retry:
|
|
|
|
+ spin_lock(&l3->list_lock);
|
|
|
|
+ entry = l3->slabs_partial.next;
|
|
|
|
+ if (entry == &l3->slabs_partial) {
|
|
|
|
+ l3->free_touched = 1;
|
|
|
|
+ entry = l3->slabs_free.next;
|
|
|
|
+ if (entry == &l3->slabs_free)
|
|
|
|
+ goto must_grow;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ slabp = list_entry(entry, struct slab, list);
|
|
|
|
+ check_spinlock_acquired_node(cachep, nodeid);
|
|
|
|
+ check_slabp(cachep, slabp);
|
|
|
|
+
|
|
|
|
+ STATS_INC_NODEALLOCS(cachep);
|
|
|
|
+ STATS_INC_ACTIVE(cachep);
|
|
|
|
+ STATS_SET_HIGH(cachep);
|
|
|
|
+
|
|
|
|
+ BUG_ON(slabp->inuse == cachep->num);
|
|
|
|
+
|
|
|
|
+ /* get obj pointer */
|
|
|
|
+ obj = slabp->s_mem + slabp->free * cachep->objsize;
|
|
|
|
+ slabp->inuse++;
|
|
|
|
+ next = slab_bufctl(slabp)[slabp->free];
|
|
#if DEBUG
|
|
#if DEBUG
|
|
- slab_bufctl(slabp)[slabp->free] = BUFCTL_FREE;
|
|
|
|
|
|
+ slab_bufctl(slabp)[slabp->free] = BUFCTL_FREE;
|
|
#endif
|
|
#endif
|
|
- slabp->free = next;
|
|
|
|
- check_slabp(cachep, slabp);
|
|
|
|
- l3->free_objects--;
|
|
|
|
- /* move slabp to correct slabp list: */
|
|
|
|
- list_del(&slabp->list);
|
|
|
|
-
|
|
|
|
- if (slabp->free == BUFCTL_END) {
|
|
|
|
- list_add(&slabp->list, &l3->slabs_full);
|
|
|
|
- } else {
|
|
|
|
- list_add(&slabp->list, &l3->slabs_partial);
|
|
|
|
- }
|
|
|
|
|
|
+ slabp->free = next;
|
|
|
|
+ check_slabp(cachep, slabp);
|
|
|
|
+ l3->free_objects--;
|
|
|
|
+ /* move slabp to correct slabp list: */
|
|
|
|
+ list_del(&slabp->list);
|
|
|
|
+
|
|
|
|
+ if (slabp->free == BUFCTL_END) {
|
|
|
|
+ list_add(&slabp->list, &l3->slabs_full);
|
|
|
|
+ } else {
|
|
|
|
+ list_add(&slabp->list, &l3->slabs_partial);
|
|
|
|
+ }
|
|
|
|
|
|
- spin_unlock(&l3->list_lock);
|
|
|
|
- goto done;
|
|
|
|
|
|
+ spin_unlock(&l3->list_lock);
|
|
|
|
+ goto done;
|
|
|
|
|
|
-must_grow:
|
|
|
|
- spin_unlock(&l3->list_lock);
|
|
|
|
- x = cache_grow(cachep, flags, nodeid);
|
|
|
|
|
|
+ must_grow:
|
|
|
|
+ spin_unlock(&l3->list_lock);
|
|
|
|
+ x = cache_grow(cachep, flags, nodeid);
|
|
|
|
|
|
- if (!x)
|
|
|
|
- return NULL;
|
|
|
|
|
|
+ if (!x)
|
|
|
|
+ return NULL;
|
|
|
|
|
|
- goto retry;
|
|
|
|
-done:
|
|
|
|
- return obj;
|
|
|
|
|
|
+ goto retry;
|
|
|
|
+ done:
|
|
|
|
+ return obj;
|
|
}
|
|
}
|
|
#endif
|
|
#endif
|
|
|
|
|
|
/*
|
|
/*
|
|
* Caller needs to acquire correct kmem_list's list_lock
|
|
* Caller needs to acquire correct kmem_list's list_lock
|
|
*/
|
|
*/
|
|
-static void free_block(kmem_cache_t *cachep, void **objpp, int nr_objects, int node)
|
|
|
|
|
|
+static void free_block(kmem_cache_t *cachep, void **objpp, int nr_objects,
|
|
|
|
+ int node)
|
|
{
|
|
{
|
|
int i;
|
|
int i;
|
|
struct kmem_list3 *l3;
|
|
struct kmem_list3 *l3;
|
|
@@ -2661,7 +2696,7 @@ static void free_block(kmem_cache_t *cachep, void **objpp, int nr_objects, int n
|
|
|
|
|
|
if (slab_bufctl(slabp)[objnr] != BUFCTL_FREE) {
|
|
if (slab_bufctl(slabp)[objnr] != BUFCTL_FREE) {
|
|
printk(KERN_ERR "slab: double free detected in cache "
|
|
printk(KERN_ERR "slab: double free detected in cache "
|
|
- "'%s', objp %p\n", cachep->name, objp);
|
|
|
|
|
|
+ "'%s', objp %p\n", cachep->name, objp);
|
|
BUG();
|
|
BUG();
|
|
}
|
|
}
|
|
#endif
|
|
#endif
|
|
@@ -2705,20 +2740,19 @@ static void cache_flusharray(kmem_cache_t *cachep, struct array_cache *ac)
|
|
spin_lock(&l3->list_lock);
|
|
spin_lock(&l3->list_lock);
|
|
if (l3->shared) {
|
|
if (l3->shared) {
|
|
struct array_cache *shared_array = l3->shared;
|
|
struct array_cache *shared_array = l3->shared;
|
|
- int max = shared_array->limit-shared_array->avail;
|
|
|
|
|
|
+ int max = shared_array->limit - shared_array->avail;
|
|
if (max) {
|
|
if (max) {
|
|
if (batchcount > max)
|
|
if (batchcount > max)
|
|
batchcount = max;
|
|
batchcount = max;
|
|
memcpy(&(shared_array->entry[shared_array->avail]),
|
|
memcpy(&(shared_array->entry[shared_array->avail]),
|
|
- ac->entry,
|
|
|
|
- sizeof(void*)*batchcount);
|
|
|
|
|
|
+ ac->entry, sizeof(void *) * batchcount);
|
|
shared_array->avail += batchcount;
|
|
shared_array->avail += batchcount;
|
|
goto free_done;
|
|
goto free_done;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
free_block(cachep, ac->entry, batchcount, node);
|
|
free_block(cachep, ac->entry, batchcount, node);
|
|
-free_done:
|
|
|
|
|
|
+ free_done:
|
|
#if STATS
|
|
#if STATS
|
|
{
|
|
{
|
|
int i = 0;
|
|
int i = 0;
|
|
@@ -2740,10 +2774,9 @@ free_done:
|
|
spin_unlock(&l3->list_lock);
|
|
spin_unlock(&l3->list_lock);
|
|
ac->avail -= batchcount;
|
|
ac->avail -= batchcount;
|
|
memmove(ac->entry, &(ac->entry[batchcount]),
|
|
memmove(ac->entry, &(ac->entry[batchcount]),
|
|
- sizeof(void*)*ac->avail);
|
|
|
|
|
|
+ sizeof(void *) * ac->avail);
|
|
}
|
|
}
|
|
|
|
|
|
-
|
|
|
|
/*
|
|
/*
|
|
* __cache_free
|
|
* __cache_free
|
|
* Release an obj back to its cache. If the obj has a constructed
|
|
* Release an obj back to its cache. If the obj has a constructed
|
|
@@ -2768,7 +2801,8 @@ static inline void __cache_free(kmem_cache_t *cachep, void *objp)
|
|
if (unlikely(slabp->nodeid != numa_node_id())) {
|
|
if (unlikely(slabp->nodeid != numa_node_id())) {
|
|
struct array_cache *alien = NULL;
|
|
struct array_cache *alien = NULL;
|
|
int nodeid = slabp->nodeid;
|
|
int nodeid = slabp->nodeid;
|
|
- struct kmem_list3 *l3 = cachep->nodelists[numa_node_id()];
|
|
|
|
|
|
+ struct kmem_list3 *l3 =
|
|
|
|
+ cachep->nodelists[numa_node_id()];
|
|
|
|
|
|
STATS_INC_NODEFREES(cachep);
|
|
STATS_INC_NODEFREES(cachep);
|
|
if (l3->alien && l3->alien[nodeid]) {
|
|
if (l3->alien && l3->alien[nodeid]) {
|
|
@@ -2776,15 +2810,15 @@ static inline void __cache_free(kmem_cache_t *cachep, void *objp)
|
|
spin_lock(&alien->lock);
|
|
spin_lock(&alien->lock);
|
|
if (unlikely(alien->avail == alien->limit))
|
|
if (unlikely(alien->avail == alien->limit))
|
|
__drain_alien_cache(cachep,
|
|
__drain_alien_cache(cachep,
|
|
- alien, nodeid);
|
|
|
|
|
|
+ alien, nodeid);
|
|
alien->entry[alien->avail++] = objp;
|
|
alien->entry[alien->avail++] = objp;
|
|
spin_unlock(&alien->lock);
|
|
spin_unlock(&alien->lock);
|
|
} else {
|
|
} else {
|
|
spin_lock(&(cachep->nodelists[nodeid])->
|
|
spin_lock(&(cachep->nodelists[nodeid])->
|
|
- list_lock);
|
|
|
|
|
|
+ list_lock);
|
|
free_block(cachep, &objp, 1, nodeid);
|
|
free_block(cachep, &objp, 1, nodeid);
|
|
spin_unlock(&(cachep->nodelists[nodeid])->
|
|
spin_unlock(&(cachep->nodelists[nodeid])->
|
|
- list_lock);
|
|
|
|
|
|
+ list_lock);
|
|
}
|
|
}
|
|
return;
|
|
return;
|
|
}
|
|
}
|
|
@@ -2831,9 +2865,9 @@ EXPORT_SYMBOL(kmem_cache_alloc);
|
|
*/
|
|
*/
|
|
int fastcall kmem_ptr_validate(kmem_cache_t *cachep, void *ptr)
|
|
int fastcall kmem_ptr_validate(kmem_cache_t *cachep, void *ptr)
|
|
{
|
|
{
|
|
- unsigned long addr = (unsigned long) ptr;
|
|
|
|
|
|
+ unsigned long addr = (unsigned long)ptr;
|
|
unsigned long min_addr = PAGE_OFFSET;
|
|
unsigned long min_addr = PAGE_OFFSET;
|
|
- unsigned long align_mask = BYTES_PER_WORD-1;
|
|
|
|
|
|
+ unsigned long align_mask = BYTES_PER_WORD - 1;
|
|
unsigned long size = cachep->objsize;
|
|
unsigned long size = cachep->objsize;
|
|
struct page *page;
|
|
struct page *page;
|
|
|
|
|
|
@@ -2853,7 +2887,7 @@ int fastcall kmem_ptr_validate(kmem_cache_t *cachep, void *ptr)
|
|
if (unlikely(page_get_cache(page) != cachep))
|
|
if (unlikely(page_get_cache(page) != cachep))
|
|
goto out;
|
|
goto out;
|
|
return 1;
|
|
return 1;
|
|
-out:
|
|
|
|
|
|
+ out:
|
|
return 0;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
|
|
@@ -2880,8 +2914,10 @@ void *kmem_cache_alloc_node(kmem_cache_t *cachep, gfp_t flags, int nodeid)
|
|
|
|
|
|
if (unlikely(!cachep->nodelists[nodeid])) {
|
|
if (unlikely(!cachep->nodelists[nodeid])) {
|
|
/* Fall back to __cache_alloc if we run into trouble */
|
|
/* Fall back to __cache_alloc if we run into trouble */
|
|
- printk(KERN_WARNING "slab: not allocating in inactive node %d for cache %s\n", nodeid, cachep->name);
|
|
|
|
- return __cache_alloc(cachep,flags);
|
|
|
|
|
|
+ printk(KERN_WARNING
|
|
|
|
+ "slab: not allocating in inactive node %d for cache %s\n",
|
|
|
|
+ nodeid, cachep->name);
|
|
|
|
+ return __cache_alloc(cachep, flags);
|
|
}
|
|
}
|
|
|
|
|
|
cache_alloc_debugcheck_before(cachep, flags);
|
|
cache_alloc_debugcheck_before(cachep, flags);
|
|
@@ -2891,7 +2927,9 @@ void *kmem_cache_alloc_node(kmem_cache_t *cachep, gfp_t flags, int nodeid)
|
|
else
|
|
else
|
|
ptr = __cache_alloc_node(cachep, flags, nodeid);
|
|
ptr = __cache_alloc_node(cachep, flags, nodeid);
|
|
local_irq_restore(save_flags);
|
|
local_irq_restore(save_flags);
|
|
- ptr = cache_alloc_debugcheck_after(cachep, flags, ptr, __builtin_return_address(0));
|
|
|
|
|
|
+ ptr =
|
|
|
|
+ cache_alloc_debugcheck_after(cachep, flags, ptr,
|
|
|
|
+ __builtin_return_address(0));
|
|
|
|
|
|
return ptr;
|
|
return ptr;
|
|
}
|
|
}
|
|
@@ -2957,7 +2995,7 @@ EXPORT_SYMBOL(__kmalloc);
|
|
void *__alloc_percpu(size_t size)
|
|
void *__alloc_percpu(size_t size)
|
|
{
|
|
{
|
|
int i;
|
|
int i;
|
|
- struct percpu_data *pdata = kmalloc(sizeof (*pdata), GFP_KERNEL);
|
|
|
|
|
|
+ struct percpu_data *pdata = kmalloc(sizeof(*pdata), GFP_KERNEL);
|
|
|
|
|
|
if (!pdata)
|
|
if (!pdata)
|
|
return NULL;
|
|
return NULL;
|
|
@@ -2981,9 +3019,9 @@ void *__alloc_percpu(size_t size)
|
|
}
|
|
}
|
|
|
|
|
|
/* Catch derefs w/o wrappers */
|
|
/* Catch derefs w/o wrappers */
|
|
- return (void *) (~(unsigned long) pdata);
|
|
|
|
|
|
+ return (void *)(~(unsigned long)pdata);
|
|
|
|
|
|
-unwind_oom:
|
|
|
|
|
|
+ unwind_oom:
|
|
while (--i >= 0) {
|
|
while (--i >= 0) {
|
|
if (!cpu_possible(i))
|
|
if (!cpu_possible(i))
|
|
continue;
|
|
continue;
|
|
@@ -3046,7 +3084,7 @@ void kfree(const void *objp)
|
|
local_irq_save(flags);
|
|
local_irq_save(flags);
|
|
kfree_debugcheck(objp);
|
|
kfree_debugcheck(objp);
|
|
c = page_get_cache(virt_to_page(objp));
|
|
c = page_get_cache(virt_to_page(objp));
|
|
- __cache_free(c, (void*)objp);
|
|
|
|
|
|
+ __cache_free(c, (void *)objp);
|
|
local_irq_restore(flags);
|
|
local_irq_restore(flags);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(kfree);
|
|
EXPORT_SYMBOL(kfree);
|
|
@@ -3059,17 +3097,16 @@ EXPORT_SYMBOL(kfree);
|
|
* Don't free memory not originally allocated by alloc_percpu()
|
|
* Don't free memory not originally allocated by alloc_percpu()
|
|
* The complemented objp is to check for that.
|
|
* The complemented objp is to check for that.
|
|
*/
|
|
*/
|
|
-void
|
|
|
|
-free_percpu(const void *objp)
|
|
|
|
|
|
+void free_percpu(const void *objp)
|
|
{
|
|
{
|
|
int i;
|
|
int i;
|
|
- struct percpu_data *p = (struct percpu_data *) (~(unsigned long) objp);
|
|
|
|
|
|
+ struct percpu_data *p = (struct percpu_data *)(~(unsigned long)objp);
|
|
|
|
|
|
/*
|
|
/*
|
|
* We allocate for all cpus so we cannot use for online cpu here.
|
|
* We allocate for all cpus so we cannot use for online cpu here.
|
|
*/
|
|
*/
|
|
for_each_cpu(i)
|
|
for_each_cpu(i)
|
|
- kfree(p->ptrs[i]);
|
|
|
|
|
|
+ kfree(p->ptrs[i]);
|
|
kfree(p);
|
|
kfree(p);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(free_percpu);
|
|
EXPORT_SYMBOL(free_percpu);
|
|
@@ -3103,44 +3140,44 @@ static int alloc_kmemlist(kmem_cache_t *cachep)
|
|
if (!(new_alien = alloc_alien_cache(node, cachep->limit)))
|
|
if (!(new_alien = alloc_alien_cache(node, cachep->limit)))
|
|
goto fail;
|
|
goto fail;
|
|
#endif
|
|
#endif
|
|
- if (!(new = alloc_arraycache(node, (cachep->shared*
|
|
|
|
- cachep->batchcount), 0xbaadf00d)))
|
|
|
|
|
|
+ if (!(new = alloc_arraycache(node, (cachep->shared *
|
|
|
|
+ cachep->batchcount),
|
|
|
|
+ 0xbaadf00d)))
|
|
goto fail;
|
|
goto fail;
|
|
if ((l3 = cachep->nodelists[node])) {
|
|
if ((l3 = cachep->nodelists[node])) {
|
|
|
|
|
|
spin_lock_irq(&l3->list_lock);
|
|
spin_lock_irq(&l3->list_lock);
|
|
|
|
|
|
if ((nc = cachep->nodelists[node]->shared))
|
|
if ((nc = cachep->nodelists[node]->shared))
|
|
- free_block(cachep, nc->entry,
|
|
|
|
- nc->avail, node);
|
|
|
|
|
|
+ free_block(cachep, nc->entry, nc->avail, node);
|
|
|
|
|
|
l3->shared = new;
|
|
l3->shared = new;
|
|
if (!cachep->nodelists[node]->alien) {
|
|
if (!cachep->nodelists[node]->alien) {
|
|
l3->alien = new_alien;
|
|
l3->alien = new_alien;
|
|
new_alien = NULL;
|
|
new_alien = NULL;
|
|
}
|
|
}
|
|
- l3->free_limit = (1 + nr_cpus_node(node))*
|
|
|
|
- cachep->batchcount + cachep->num;
|
|
|
|
|
|
+ l3->free_limit = (1 + nr_cpus_node(node)) *
|
|
|
|
+ cachep->batchcount + cachep->num;
|
|
spin_unlock_irq(&l3->list_lock);
|
|
spin_unlock_irq(&l3->list_lock);
|
|
kfree(nc);
|
|
kfree(nc);
|
|
free_alien_cache(new_alien);
|
|
free_alien_cache(new_alien);
|
|
continue;
|
|
continue;
|
|
}
|
|
}
|
|
if (!(l3 = kmalloc_node(sizeof(struct kmem_list3),
|
|
if (!(l3 = kmalloc_node(sizeof(struct kmem_list3),
|
|
- GFP_KERNEL, node)))
|
|
|
|
|
|
+ GFP_KERNEL, node)))
|
|
goto fail;
|
|
goto fail;
|
|
|
|
|
|
kmem_list3_init(l3);
|
|
kmem_list3_init(l3);
|
|
l3->next_reap = jiffies + REAPTIMEOUT_LIST3 +
|
|
l3->next_reap = jiffies + REAPTIMEOUT_LIST3 +
|
|
- ((unsigned long)cachep)%REAPTIMEOUT_LIST3;
|
|
|
|
|
|
+ ((unsigned long)cachep) % REAPTIMEOUT_LIST3;
|
|
l3->shared = new;
|
|
l3->shared = new;
|
|
l3->alien = new_alien;
|
|
l3->alien = new_alien;
|
|
- l3->free_limit = (1 + nr_cpus_node(node))*
|
|
|
|
- cachep->batchcount + cachep->num;
|
|
|
|
|
|
+ l3->free_limit = (1 + nr_cpus_node(node)) *
|
|
|
|
+ cachep->batchcount + cachep->num;
|
|
cachep->nodelists[node] = l3;
|
|
cachep->nodelists[node] = l3;
|
|
}
|
|
}
|
|
return err;
|
|
return err;
|
|
-fail:
|
|
|
|
|
|
+ fail:
|
|
err = -ENOMEM;
|
|
err = -ENOMEM;
|
|
return err;
|
|
return err;
|
|
}
|
|
}
|
|
@@ -3162,18 +3199,19 @@ static void do_ccupdate_local(void *info)
|
|
new->new[smp_processor_id()] = old;
|
|
new->new[smp_processor_id()] = old;
|
|
}
|
|
}
|
|
|
|
|
|
-
|
|
|
|
static int do_tune_cpucache(kmem_cache_t *cachep, int limit, int batchcount,
|
|
static int do_tune_cpucache(kmem_cache_t *cachep, int limit, int batchcount,
|
|
- int shared)
|
|
|
|
|
|
+ int shared)
|
|
{
|
|
{
|
|
struct ccupdate_struct new;
|
|
struct ccupdate_struct new;
|
|
int i, err;
|
|
int i, err;
|
|
|
|
|
|
- memset(&new.new,0,sizeof(new.new));
|
|
|
|
|
|
+ memset(&new.new, 0, sizeof(new.new));
|
|
for_each_online_cpu(i) {
|
|
for_each_online_cpu(i) {
|
|
- new.new[i] = alloc_arraycache(cpu_to_node(i), limit, batchcount);
|
|
|
|
|
|
+ new.new[i] =
|
|
|
|
+ alloc_arraycache(cpu_to_node(i), limit, batchcount);
|
|
if (!new.new[i]) {
|
|
if (!new.new[i]) {
|
|
- for (i--; i >= 0; i--) kfree(new.new[i]);
|
|
|
|
|
|
+ for (i--; i >= 0; i--)
|
|
|
|
+ kfree(new.new[i]);
|
|
return -ENOMEM;
|
|
return -ENOMEM;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
@@ -3201,13 +3239,12 @@ static int do_tune_cpucache(kmem_cache_t *cachep, int limit, int batchcount,
|
|
err = alloc_kmemlist(cachep);
|
|
err = alloc_kmemlist(cachep);
|
|
if (err) {
|
|
if (err) {
|
|
printk(KERN_ERR "alloc_kmemlist failed for %s, error %d.\n",
|
|
printk(KERN_ERR "alloc_kmemlist failed for %s, error %d.\n",
|
|
- cachep->name, -err);
|
|
|
|
|
|
+ cachep->name, -err);
|
|
BUG();
|
|
BUG();
|
|
}
|
|
}
|
|
return 0;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
|
|
-
|
|
|
|
static void enable_cpucache(kmem_cache_t *cachep)
|
|
static void enable_cpucache(kmem_cache_t *cachep)
|
|
{
|
|
{
|
|
int err;
|
|
int err;
|
|
@@ -3254,14 +3291,14 @@ static void enable_cpucache(kmem_cache_t *cachep)
|
|
if (limit > 32)
|
|
if (limit > 32)
|
|
limit = 32;
|
|
limit = 32;
|
|
#endif
|
|
#endif
|
|
- err = do_tune_cpucache(cachep, limit, (limit+1)/2, shared);
|
|
|
|
|
|
+ err = do_tune_cpucache(cachep, limit, (limit + 1) / 2, shared);
|
|
if (err)
|
|
if (err)
|
|
printk(KERN_ERR "enable_cpucache failed for %s, error %d.\n",
|
|
printk(KERN_ERR "enable_cpucache failed for %s, error %d.\n",
|
|
- cachep->name, -err);
|
|
|
|
|
|
+ cachep->name, -err);
|
|
}
|
|
}
|
|
|
|
|
|
-static void drain_array_locked(kmem_cache_t *cachep,
|
|
|
|
- struct array_cache *ac, int force, int node)
|
|
|
|
|
|
+static void drain_array_locked(kmem_cache_t *cachep, struct array_cache *ac,
|
|
|
|
+ int force, int node)
|
|
{
|
|
{
|
|
int tofree;
|
|
int tofree;
|
|
|
|
|
|
@@ -3269,14 +3306,14 @@ static void drain_array_locked(kmem_cache_t *cachep,
|
|
if (ac->touched && !force) {
|
|
if (ac->touched && !force) {
|
|
ac->touched = 0;
|
|
ac->touched = 0;
|
|
} else if (ac->avail) {
|
|
} else if (ac->avail) {
|
|
- tofree = force ? ac->avail : (ac->limit+4)/5;
|
|
|
|
|
|
+ tofree = force ? ac->avail : (ac->limit + 4) / 5;
|
|
if (tofree > ac->avail) {
|
|
if (tofree > ac->avail) {
|
|
- tofree = (ac->avail+1)/2;
|
|
|
|
|
|
+ tofree = (ac->avail + 1) / 2;
|
|
}
|
|
}
|
|
free_block(cachep, ac->entry, tofree, node);
|
|
free_block(cachep, ac->entry, tofree, node);
|
|
ac->avail -= tofree;
|
|
ac->avail -= tofree;
|
|
memmove(ac->entry, &(ac->entry[tofree]),
|
|
memmove(ac->entry, &(ac->entry[tofree]),
|
|
- sizeof(void*)*ac->avail);
|
|
|
|
|
|
+ sizeof(void *) * ac->avail);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
@@ -3299,13 +3336,14 @@ static void cache_reap(void *unused)
|
|
|
|
|
|
if (down_trylock(&cache_chain_sem)) {
|
|
if (down_trylock(&cache_chain_sem)) {
|
|
/* Give up. Setup the next iteration. */
|
|
/* Give up. Setup the next iteration. */
|
|
- schedule_delayed_work(&__get_cpu_var(reap_work), REAPTIMEOUT_CPUC);
|
|
|
|
|
|
+ schedule_delayed_work(&__get_cpu_var(reap_work),
|
|
|
|
+ REAPTIMEOUT_CPUC);
|
|
return;
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
list_for_each(walk, &cache_chain) {
|
|
list_for_each(walk, &cache_chain) {
|
|
kmem_cache_t *searchp;
|
|
kmem_cache_t *searchp;
|
|
- struct list_head* p;
|
|
|
|
|
|
+ struct list_head *p;
|
|
int tofree;
|
|
int tofree;
|
|
struct slab *slabp;
|
|
struct slab *slabp;
|
|
|
|
|
|
@@ -3322,7 +3360,7 @@ static void cache_reap(void *unused)
|
|
spin_lock_irq(&l3->list_lock);
|
|
spin_lock_irq(&l3->list_lock);
|
|
|
|
|
|
drain_array_locked(searchp, ac_data(searchp), 0,
|
|
drain_array_locked(searchp, ac_data(searchp), 0,
|
|
- numa_node_id());
|
|
|
|
|
|
+ numa_node_id());
|
|
|
|
|
|
if (time_after(l3->next_reap, jiffies))
|
|
if (time_after(l3->next_reap, jiffies))
|
|
goto next_unlock;
|
|
goto next_unlock;
|
|
@@ -3331,14 +3369,16 @@ static void cache_reap(void *unused)
|
|
|
|
|
|
if (l3->shared)
|
|
if (l3->shared)
|
|
drain_array_locked(searchp, l3->shared, 0,
|
|
drain_array_locked(searchp, l3->shared, 0,
|
|
- numa_node_id());
|
|
|
|
|
|
+ numa_node_id());
|
|
|
|
|
|
if (l3->free_touched) {
|
|
if (l3->free_touched) {
|
|
l3->free_touched = 0;
|
|
l3->free_touched = 0;
|
|
goto next_unlock;
|
|
goto next_unlock;
|
|
}
|
|
}
|
|
|
|
|
|
- tofree = (l3->free_limit+5*searchp->num-1)/(5*searchp->num);
|
|
|
|
|
|
+ tofree =
|
|
|
|
+ (l3->free_limit + 5 * searchp->num -
|
|
|
|
+ 1) / (5 * searchp->num);
|
|
do {
|
|
do {
|
|
p = l3->slabs_free.next;
|
|
p = l3->slabs_free.next;
|
|
if (p == &(l3->slabs_free))
|
|
if (p == &(l3->slabs_free))
|
|
@@ -3358,10 +3398,10 @@ static void cache_reap(void *unused)
|
|
spin_unlock_irq(&l3->list_lock);
|
|
spin_unlock_irq(&l3->list_lock);
|
|
slab_destroy(searchp, slabp);
|
|
slab_destroy(searchp, slabp);
|
|
spin_lock_irq(&l3->list_lock);
|
|
spin_lock_irq(&l3->list_lock);
|
|
- } while(--tofree > 0);
|
|
|
|
-next_unlock:
|
|
|
|
|
|
+ } while (--tofree > 0);
|
|
|
|
+ next_unlock:
|
|
spin_unlock_irq(&l3->list_lock);
|
|
spin_unlock_irq(&l3->list_lock);
|
|
-next:
|
|
|
|
|
|
+ next:
|
|
cond_resched();
|
|
cond_resched();
|
|
}
|
|
}
|
|
check_irq_on();
|
|
check_irq_on();
|
|
@@ -3418,7 +3458,7 @@ static void *s_next(struct seq_file *m, void *p, loff_t *pos)
|
|
kmem_cache_t *cachep = p;
|
|
kmem_cache_t *cachep = p;
|
|
++*pos;
|
|
++*pos;
|
|
return cachep->next.next == &cache_chain ? NULL
|
|
return cachep->next.next == &cache_chain ? NULL
|
|
- : list_entry(cachep->next.next, kmem_cache_t, next);
|
|
|
|
|
|
+ : list_entry(cachep->next.next, kmem_cache_t, next);
|
|
}
|
|
}
|
|
|
|
|
|
static void s_stop(struct seq_file *m, void *p)
|
|
static void s_stop(struct seq_file *m, void *p)
|
|
@@ -3430,11 +3470,11 @@ static int s_show(struct seq_file *m, void *p)
|
|
{
|
|
{
|
|
kmem_cache_t *cachep = p;
|
|
kmem_cache_t *cachep = p;
|
|
struct list_head *q;
|
|
struct list_head *q;
|
|
- struct slab *slabp;
|
|
|
|
- unsigned long active_objs;
|
|
|
|
- unsigned long num_objs;
|
|
|
|
- unsigned long active_slabs = 0;
|
|
|
|
- unsigned long num_slabs, free_objects = 0, shared_avail = 0;
|
|
|
|
|
|
+ struct slab *slabp;
|
|
|
|
+ unsigned long active_objs;
|
|
|
|
+ unsigned long num_objs;
|
|
|
|
+ unsigned long active_slabs = 0;
|
|
|
|
+ unsigned long num_slabs, free_objects = 0, shared_avail = 0;
|
|
const char *name;
|
|
const char *name;
|
|
char *error = NULL;
|
|
char *error = NULL;
|
|
int node;
|
|
int node;
|
|
@@ -3451,14 +3491,14 @@ static int s_show(struct seq_file *m, void *p)
|
|
|
|
|
|
spin_lock(&l3->list_lock);
|
|
spin_lock(&l3->list_lock);
|
|
|
|
|
|
- list_for_each(q,&l3->slabs_full) {
|
|
|
|
|
|
+ list_for_each(q, &l3->slabs_full) {
|
|
slabp = list_entry(q, struct slab, list);
|
|
slabp = list_entry(q, struct slab, list);
|
|
if (slabp->inuse != cachep->num && !error)
|
|
if (slabp->inuse != cachep->num && !error)
|
|
error = "slabs_full accounting error";
|
|
error = "slabs_full accounting error";
|
|
active_objs += cachep->num;
|
|
active_objs += cachep->num;
|
|
active_slabs++;
|
|
active_slabs++;
|
|
}
|
|
}
|
|
- list_for_each(q,&l3->slabs_partial) {
|
|
|
|
|
|
+ list_for_each(q, &l3->slabs_partial) {
|
|
slabp = list_entry(q, struct slab, list);
|
|
slabp = list_entry(q, struct slab, list);
|
|
if (slabp->inuse == cachep->num && !error)
|
|
if (slabp->inuse == cachep->num && !error)
|
|
error = "slabs_partial inuse accounting error";
|
|
error = "slabs_partial inuse accounting error";
|
|
@@ -3467,7 +3507,7 @@ static int s_show(struct seq_file *m, void *p)
|
|
active_objs += slabp->inuse;
|
|
active_objs += slabp->inuse;
|
|
active_slabs++;
|
|
active_slabs++;
|
|
}
|
|
}
|
|
- list_for_each(q,&l3->slabs_free) {
|
|
|
|
|
|
+ list_for_each(q, &l3->slabs_free) {
|
|
slabp = list_entry(q, struct slab, list);
|
|
slabp = list_entry(q, struct slab, list);
|
|
if (slabp->inuse && !error)
|
|
if (slabp->inuse && !error)
|
|
error = "slabs_free/inuse accounting error";
|
|
error = "slabs_free/inuse accounting error";
|
|
@@ -3478,25 +3518,24 @@ static int s_show(struct seq_file *m, void *p)
|
|
|
|
|
|
spin_unlock(&l3->list_lock);
|
|
spin_unlock(&l3->list_lock);
|
|
}
|
|
}
|
|
- num_slabs+=active_slabs;
|
|
|
|
- num_objs = num_slabs*cachep->num;
|
|
|
|
|
|
+ num_slabs += active_slabs;
|
|
|
|
+ num_objs = num_slabs * cachep->num;
|
|
if (num_objs - active_objs != free_objects && !error)
|
|
if (num_objs - active_objs != free_objects && !error)
|
|
error = "free_objects accounting error";
|
|
error = "free_objects accounting error";
|
|
|
|
|
|
- name = cachep->name;
|
|
|
|
|
|
+ name = cachep->name;
|
|
if (error)
|
|
if (error)
|
|
printk(KERN_ERR "slab: cache %s error: %s\n", name, error);
|
|
printk(KERN_ERR "slab: cache %s error: %s\n", name, error);
|
|
|
|
|
|
seq_printf(m, "%-17s %6lu %6lu %6u %4u %4d",
|
|
seq_printf(m, "%-17s %6lu %6lu %6u %4u %4d",
|
|
- name, active_objs, num_objs, cachep->objsize,
|
|
|
|
- cachep->num, (1<<cachep->gfporder));
|
|
|
|
|
|
+ name, active_objs, num_objs, cachep->objsize,
|
|
|
|
+ cachep->num, (1 << cachep->gfporder));
|
|
seq_printf(m, " : tunables %4u %4u %4u",
|
|
seq_printf(m, " : tunables %4u %4u %4u",
|
|
- cachep->limit, cachep->batchcount,
|
|
|
|
- cachep->shared);
|
|
|
|
|
|
+ cachep->limit, cachep->batchcount, cachep->shared);
|
|
seq_printf(m, " : slabdata %6lu %6lu %6lu",
|
|
seq_printf(m, " : slabdata %6lu %6lu %6lu",
|
|
- active_slabs, num_slabs, shared_avail);
|
|
|
|
|
|
+ active_slabs, num_slabs, shared_avail);
|
|
#if STATS
|
|
#if STATS
|
|
- { /* list3 stats */
|
|
|
|
|
|
+ { /* list3 stats */
|
|
unsigned long high = cachep->high_mark;
|
|
unsigned long high = cachep->high_mark;
|
|
unsigned long allocs = cachep->num_allocations;
|
|
unsigned long allocs = cachep->num_allocations;
|
|
unsigned long grown = cachep->grown;
|
|
unsigned long grown = cachep->grown;
|
|
@@ -3507,9 +3546,7 @@ static int s_show(struct seq_file *m, void *p)
|
|
unsigned long node_frees = cachep->node_frees;
|
|
unsigned long node_frees = cachep->node_frees;
|
|
|
|
|
|
seq_printf(m, " : globalstat %7lu %6lu %5lu %4lu \
|
|
seq_printf(m, " : globalstat %7lu %6lu %5lu %4lu \
|
|
- %4lu %4lu %4lu %4lu",
|
|
|
|
- allocs, high, grown, reaped, errors,
|
|
|
|
- max_freeable, node_allocs, node_frees);
|
|
|
|
|
|
+ %4lu %4lu %4lu %4lu", allocs, high, grown, reaped, errors, max_freeable, node_allocs, node_frees);
|
|
}
|
|
}
|
|
/* cpu stats */
|
|
/* cpu stats */
|
|
{
|
|
{
|
|
@@ -3519,7 +3556,7 @@ static int s_show(struct seq_file *m, void *p)
|
|
unsigned long freemiss = atomic_read(&cachep->freemiss);
|
|
unsigned long freemiss = atomic_read(&cachep->freemiss);
|
|
|
|
|
|
seq_printf(m, " : cpustat %6lu %6lu %6lu %6lu",
|
|
seq_printf(m, " : cpustat %6lu %6lu %6lu %6lu",
|
|
- allochit, allocmiss, freehit, freemiss);
|
|
|
|
|
|
+ allochit, allocmiss, freehit, freemiss);
|
|
}
|
|
}
|
|
#endif
|
|
#endif
|
|
seq_putc(m, '\n');
|
|
seq_putc(m, '\n');
|
|
@@ -3542,10 +3579,10 @@ static int s_show(struct seq_file *m, void *p)
|
|
*/
|
|
*/
|
|
|
|
|
|
struct seq_operations slabinfo_op = {
|
|
struct seq_operations slabinfo_op = {
|
|
- .start = s_start,
|
|
|
|
- .next = s_next,
|
|
|
|
- .stop = s_stop,
|
|
|
|
- .show = s_show,
|
|
|
|
|
|
+ .start = s_start,
|
|
|
|
+ .next = s_next,
|
|
|
|
+ .stop = s_stop,
|
|
|
|
+ .show = s_show,
|
|
};
|
|
};
|
|
|
|
|
|
#define MAX_SLABINFO_WRITE 128
|
|
#define MAX_SLABINFO_WRITE 128
|
|
@@ -3556,18 +3593,18 @@ struct seq_operations slabinfo_op = {
|
|
* @count: data length
|
|
* @count: data length
|
|
* @ppos: unused
|
|
* @ppos: unused
|
|
*/
|
|
*/
|
|
-ssize_t slabinfo_write(struct file *file, const char __user *buffer,
|
|
|
|
- size_t count, loff_t *ppos)
|
|
|
|
|
|
+ssize_t slabinfo_write(struct file *file, const char __user * buffer,
|
|
|
|
+ size_t count, loff_t *ppos)
|
|
{
|
|
{
|
|
- char kbuf[MAX_SLABINFO_WRITE+1], *tmp;
|
|
|
|
|
|
+ char kbuf[MAX_SLABINFO_WRITE + 1], *tmp;
|
|
int limit, batchcount, shared, res;
|
|
int limit, batchcount, shared, res;
|
|
struct list_head *p;
|
|
struct list_head *p;
|
|
-
|
|
|
|
|
|
+
|
|
if (count > MAX_SLABINFO_WRITE)
|
|
if (count > MAX_SLABINFO_WRITE)
|
|
return -EINVAL;
|
|
return -EINVAL;
|
|
if (copy_from_user(&kbuf, buffer, count))
|
|
if (copy_from_user(&kbuf, buffer, count))
|
|
return -EFAULT;
|
|
return -EFAULT;
|
|
- kbuf[MAX_SLABINFO_WRITE] = '\0';
|
|
|
|
|
|
+ kbuf[MAX_SLABINFO_WRITE] = '\0';
|
|
|
|
|
|
tmp = strchr(kbuf, ' ');
|
|
tmp = strchr(kbuf, ' ');
|
|
if (!tmp)
|
|
if (!tmp)
|
|
@@ -3580,18 +3617,17 @@ ssize_t slabinfo_write(struct file *file, const char __user *buffer,
|
|
/* Find the cache in the chain of caches. */
|
|
/* Find the cache in the chain of caches. */
|
|
down(&cache_chain_sem);
|
|
down(&cache_chain_sem);
|
|
res = -EINVAL;
|
|
res = -EINVAL;
|
|
- list_for_each(p,&cache_chain) {
|
|
|
|
|
|
+ list_for_each(p, &cache_chain) {
|
|
kmem_cache_t *cachep = list_entry(p, kmem_cache_t, next);
|
|
kmem_cache_t *cachep = list_entry(p, kmem_cache_t, next);
|
|
|
|
|
|
if (!strcmp(cachep->name, kbuf)) {
|
|
if (!strcmp(cachep->name, kbuf)) {
|
|
if (limit < 1 ||
|
|
if (limit < 1 ||
|
|
batchcount < 1 ||
|
|
batchcount < 1 ||
|
|
- batchcount > limit ||
|
|
|
|
- shared < 0) {
|
|
|
|
|
|
+ batchcount > limit || shared < 0) {
|
|
res = 0;
|
|
res = 0;
|
|
} else {
|
|
} else {
|
|
res = do_tune_cpucache(cachep, limit,
|
|
res = do_tune_cpucache(cachep, limit,
|
|
- batchcount, shared);
|
|
|
|
|
|
+ batchcount, shared);
|
|
}
|
|
}
|
|
break;
|
|
break;
|
|
}
|
|
}
|