cregit-Linux how code gets into the kernel

Release 4.12 include/linux/slab_def.h

Directory: include/linux


#include <linux/reciprocal_div.h>

 * Definitions unique to the original Linux SLAB allocator.

struct kmem_cache {
struct array_cache __percpu *cpu_cache;

/* 1) Cache tunables. Protected by slab_mutex */
unsigned int batchcount;
unsigned int limit;
unsigned int shared;

unsigned int size;
struct reciprocal_value reciprocal_buffer_size;
/* 2) touched by every alloc & free from the backend */

unsigned int flags;		/* constant flags */
unsigned int num;		/* # of objs per slab */

/* 3) cache_grow/shrink */
	/* order of pgs per slab (2^n) */
unsigned int gfporder;

	/* force GFP flags, e.g. GFP_DMA */
gfp_t allocflags;

size_t colour;			/* cache colouring range */
unsigned int colour_off;	/* colour offset */
struct kmem_cache *freelist_cache;
unsigned int freelist_size;

	/* constructor func */
void (*ctor)(void *obj);

/* 4) cache creation/removal */
const char *name;
struct list_head list;
int refcount;
int object_size;
int align;

/* 5) statistics */
unsigned long num_active;
unsigned long num_allocations;
unsigned long high_mark;
unsigned long grown;
unsigned long reaped;
unsigned long errors;
unsigned long max_freeable;
unsigned long node_allocs;
unsigned long node_frees;
unsigned long node_overflow;
atomic_t allochit;
atomic_t allocmiss;
atomic_t freehit;
atomic_t freemiss;
atomic_t store_user_clean;

         * If debugging is enabled, then the allocator can add additional
         * fields and/or padding to every object. size contains the total
         * object size including these internal fields, the following two
         * variables contain the offset to the user object and its size.
int obj_offset;
#endif /* CONFIG_DEBUG_SLAB */

struct memcg_cache_params memcg_params;
struct kasan_cache kasan_info;

unsigned int *random_seq;

struct kmem_cache_node *node[MAX_NUMNODES];

static inline void *nearest_obj(struct kmem_cache *cache, struct page *page, void *x) { void *object = x - (x - page->s_mem) % cache->size; void *last_object = page->s_mem + (cache->num - 1) * cache->size; if (unlikely(object > last_object)) return last_object; else return object; }


Alexander Potapenko76100.00%1100.00%

#endif /* _LINUX_SLAB_DEF_H */

Overall Contributors

Pekka J Enberg14247.65%15.26%
Alexander Potapenko8528.52%15.26%
Christoph Lameter258.39%631.58%
JoonSoo Kim165.37%315.79%
Thomas Garnier103.36%210.53%
Glauber de Oliveira Costa93.02%210.53%
Hannes Frederic Sowa51.68%15.26%
Eric Dumazet41.34%15.26%
Johannes Weiner10.34%15.26%
Fam Zheng10.34%15.26%
Directory: include/linux
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