slob.c File Reference

#include <linux/kernel.h>
#include <linux/slab.h>
#include "slab.h"
#include <linux/mm.h>
#include <linux/swap.h>
#include <linux/cache.h>
#include <linux/init.h>
#include <linux/export.h>
#include <linux/rcupdate.h>
#include <linux/list.h>
#include <linux/kmemleak.h>
#include <trace/events/kmem.h>
#include <linux/atomic.h>

Go to the source code of this file.

Data Structures
struct	slob_block
struct	slob_rcu

Macros
#define	SLOB_BREAK1   256
#define	SLOB_BREAK2   1024
#define	SLOB_UNIT   sizeof(slob_t)
#define	SLOB_UNITS(size)   (((size) + SLOB_UNIT - 1)/SLOB_UNIT)
#define	SLOB_ALIGN   L1_CACHE_BYTES

Typedefs
typedef s16	slobidx_t
typedef struct slob_block	slob_t

Functions
void *	__kmalloc_node (size_t size, gfp_t gfp, int node)
	EXPORT_SYMBOL (__kmalloc_node)
void	kfree (const void *block)
	EXPORT_SYMBOL (kfree)
size_t	ksize (const void *block)
	EXPORT_SYMBOL (ksize)
int	__kmem_cache_create (struct kmem_cache *c, unsigned long flags)
void *	kmem_cache_alloc_node (struct kmem_cache *c, gfp_t flags, int node)
	EXPORT_SYMBOL (kmem_cache_alloc_node)
void	kmem_cache_free (struct kmem_cache *c, void *b)
	EXPORT_SYMBOL (kmem_cache_free)
unsigned int	kmem_cache_size (struct kmem_cache *c)
	EXPORT_SYMBOL (kmem_cache_size)
int	__kmem_cache_shutdown (struct kmem_cache *c)
int	kmem_cache_shrink (struct kmem_cache *d)
	EXPORT_SYMBOL (kmem_cache_shrink)
void __init	kmem_cache_init (void)
void __init	kmem_cache_init_late (void)

Variables
struct kmem_cache	kmem_cache_boot

Macro Definition Documentation

#define SLOB_ALIGN   L1_CACHE_BYTES

Definition at line 127 of file slob.c.

#define SLOB_BREAK1   256

Definition at line 99 of file slob.c.

#define SLOB_BREAK2   1024

Definition at line 100 of file slob.c.

#define SLOB_UNIT   sizeof(slob_t)

Definition at line 125 of file slob.c.

#define SLOB_UNITS

(

size

)

(((size) + SLOB_UNIT - 1)/SLOB_UNIT)

Definition at line 126 of file slob.c.

Typedef Documentation

typedef struct slob_block slob_t

Definition at line 94 of file slob.c.

typedef s16 slobidx_t

Definition at line 86 of file slob.c.

Function Documentation

void* __kmalloc_node	(	size_t	size,
		gfp_t	gfp,
		int	node
	)

Definition at line 472 of file slob.c.

int __kmem_cache_create	(	struct kmem_cache *	c,
		unsigned long	flags
	)

Definition at line 532 of file slob.c.

int __kmem_cache_shutdown

(

struct kmem_cache *

c

)

Definition at line 617 of file slob.c.

EXPORT_SYMBOL

(

__kmalloc_node

)

EXPORT_SYMBOL

(

kfree

)

EXPORT_SYMBOL

(

ksize

)

EXPORT_SYMBOL

(

kmem_cache_alloc_node

)

EXPORT_SYMBOL

(

kmem_cache_free

)

EXPORT_SYMBOL

(

kmem_cache_size

)

EXPORT_SYMBOL

(

kmem_cache_shrink

)

void kfree

(

const void *

block

)

kfree - free previously allocated memory : pointer returned by kmalloc.

If is NULL, no operation is performed.

Don't free memory not originally allocated by kmalloc() or you will run into trouble.

Definition at line 493 of file slob.c.

void* kmem_cache_alloc_node	(	struct kmem_cache *	c,
		gfp_t	flags,
		int	node
	)

Definition at line 551 of file slob.c.

void kmem_cache_free	(	struct kmem_cache *	c,
		void *	b
	)

kmem_cache_free - Deallocate an object : The cache the allocation was from. : The previously allocated object.

Free an object which was previously allocated from this cache.

Definition at line 595 of file slob.c.

void __init kmem_cache_init

(

void

)

Definition at line 636 of file slob.c.

void __init kmem_cache_init_late

(

void

)

Definition at line 642 of file slob.c.

int kmem_cache_shrink

(

struct kmem_cache *

d

)

kmem_cache_shrink - Shrink a cache. : The cache to shrink.

Releases as many slabs as possible for a cache. To help debugging, a zero exit status indicates all slabs were released.

Definition at line 623 of file slob.c.

unsigned int kmem_cache_size

(

struct kmem_cache *

c

)

Definition at line 611 of file slob.c.

size_t ksize

(

const void *

block

)

ksize - get the actual amount of memory allocated for a given object : Pointer to the object

kmalloc may internally round up allocations and return more memory than requested. ksize() can be used to determine the actual amount of memory allocated. The caller may use this additional memory, even though a smaller amount of memory was initially specified with the kmalloc call. The caller must guarantee that objp points to a valid object previously allocated with either kmalloc() or kmem_cache_alloc(). The object must not be freed during the duration of the call.

Definition at line 514 of file slob.c.

Variable Documentation

struct kmem_cache kmem_cache_boot

Initial value:

= {
    .name = "kmem_cache",
    .size = sizeof(struct kmem_cache),
    .flags = SLAB_PANIC,
    .align = ARCH_KMALLOC_MINALIGN,
}

Definition at line 629 of file slob.c.