#include <sw_list.h>
#include <sw_types.h>

Classes
struct	sw_free_area

struct	sw_alloced_area

struct	sw_heap

Macros
#define	CONFIG_BUDDY_HOUSE_KEEPING_PERCENT 25

#define	CONFIG_BUDDY_MIN_BLOCK_SIZE_SHIFT 2

#define	CONFIG_BUDDY_MAX_BLOCK_SIZE_SHIFT 12

#define	HOUSE_KEEPING_PERCENT (CONFIG_BUDDY_HOUSE_KEEPING_PERCENT)

#define	MIN_BLOCK_SIZE (0x01UL << CONFIG_BUDDY_MIN_BLOCK_SIZE_SHIFT)

#define	MAX_BLOCK_SIZE (0x01UL << CONFIG_BUDDY_MAX_BLOCK_SIZE_SHIFT)

#define	BINS_MAX_ORDER

#define	NUM_OF_HEAPS 8

#define	HEAP_SIZE (1 << 16) /* 64 KB */

#define	COMMON_HEAP_ID 0

Functions
struct sw_free_area	__attribute__ ((packed))

int	buddy_init (int index, void *heap_start, unsigned int heap_size)
	Buddy allocator initialization. More...

void *	sw_buddy_malloc (int index, unsigned int size)
	allocates memory at the requested heap index for size bytes More...

void *	buddy_zalloc (unsigned int size)
	Allocates memory at the requested heap index for size bytes and initalizes it to zero. More...

void	buddy_free (int index, void *ptr)
	Frees the allocated memory block at the given heap index and address ptr. More...

void	sw_buddy_print_state (void)
	Prints the state of the heap allocations Whether heap is found for this task Heap size, no. of free and allocated blocks. More...

void	buddy_print_hk_state (int index)
	Prints the status of house keeping region of heap memory No. of free and allocated nodes in the heap. More...

void *	sw_malloc (u32 size)
	Gets the task id and allocates memory in the heap memory corresponding to the task. More...

void	sw_free (void *pointer)
	Gets the task_id and frees the heap memory corresponding to the task_id. More...

int	sw_heap_init (int index, void *heap_start, unsigned int heap_size)
	Heap memory initialization. More...

unsigned int	get_ptr_size (void *ptr)
	function to get the size of a pointer. This is needed during realloc More...

void *	sw_malloc_private (int heap_id, u32 size)
	Allocates memory privately for size bytes at the memory related to heap_id passed. More...

void	sw_free_private (int heap_id, void *pointer)
	Frees the privately allocated memory pointing to the heap_id and the address pointer. More...

int	alloc_private_heap (int heap_id)
	Allocates heap memory initially during task creation for a particular heap_id Checks for already allocated heap matching the heap_id, If no memory was allocated earlier, memory is allocated for the passed heap_id. More...

int	free_private_heap (int heap_id)
	Frees the private heap already allocated corresponding to the heap_id. More...

void	sw_malloc_init (void)
	Initial Memory Allocation Heap also initialized. More...

void	sw_dump_mallocs (void)
	Prints the heap memory allocation related address and sizes. More...

void	sw_malloc_free (void *ptr)
	Frees the memory allocated by passing the address ptr. More...

Variables
struct list	head

void *	map

unsigned int	count

unsigned int	res0

unsigned int	blk_sz

unsigned int	bin_num

struct sw_free_area *	hk_fn_array

struct sw_alloced_area *	hk_an_array

void *	mem_start

void *	heap_start

struct sw_alloced_area	current

struct sw_free_area	free_area [BINS_MAX_ORDER]

unsigned int	hk_fn_count

unsigned int	hk_an_count

unsigned int	mem_size

unsigned int	heap_size

Macro Definition Documentation

#define BINS_MAX_ORDER

Value:

(CONFIG_BUDDY_MAX_BLOCK_SIZE_SHIFT - \

CONFIG_BUDDY_MIN_BLOCK_SIZE_SHIFT + 1)

CONFIG_BUDDY_MAX_BLOCK_SIZE_SHIFT

#define CONFIG_BUDDY_MAX_BLOCK_SIZE_SHIFT

Definition: sw_buddy.h:45

CONFIG_BUDDY_MIN_BLOCK_SIZE_SHIFT

#define CONFIG_BUDDY_MIN_BLOCK_SIZE_SHIFT

Definition: sw_buddy.h:41

#define COMMON_HEAP_ID 0

#define CONFIG_BUDDY_HOUSE_KEEPING_PERCENT 25

header file for buddy allocator in Trustzone Kernel

#define CONFIG_BUDDY_MAX_BLOCK_SIZE_SHIFT 12

#define CONFIG_BUDDY_MIN_BLOCK_SIZE_SHIFT 2

#define HEAP_SIZE (1 << 16) /* 64 KB */

#define HOUSE_KEEPING_PERCENT (CONFIG_BUDDY_HOUSE_KEEPING_PERCENT)

#define MAX_BLOCK_SIZE (0x01UL << CONFIG_BUDDY_MAX_BLOCK_SIZE_SHIFT)

#define MIN_BLOCK_SIZE (0x01UL << CONFIG_BUDDY_MIN_BLOCK_SIZE_SHIFT)

#define NUM_OF_HEAPS 8

Function Documentation

struct sw_free_area __attribute__ ( (packed) )

int alloc_private_heap ( int heap_id )

Allocates heap memory initially during task creation for a particular heap_id Checks for already allocated heap matching the heap_id, If no memory was allocated earlier, memory is allocated for the passed heap_id.

Parameters

heap_id

Returns

void buddy_free	(	int	index,
		void *	ptr
	)

Frees the allocated memory block at the given heap index and address ptr.

Parameters

index
ptr

int buddy_init	(	int	index,
		void *	heap_start,
		unsigned int	heap_size
	)

Buddy allocator initialization.

Parameters

index
heap_start
heap_size

Returns

void buddy_print_hk_state ( int index )

Prints the status of house keeping region of heap memory No. of free and allocated nodes in the heap.

void* buddy_zalloc ( unsigned int size )

Allocates memory at the requested heap index for size bytes and initalizes it to zero.

Parameters

size

Returns

int free_private_heap ( int heap_id )

Frees the private heap already allocated corresponding to the heap_id.

Parameters

heap_id

Returns

unsigned int get_ptr_size ( void * ptr )

function to get the size of a pointer. This is needed during realloc

Parameters

ptr	- the pointer whose size we need to determine

Returns: - The size of the pointer

function to get the size of a pointer. This is needed during realloc

Parameters

ptr

Returns

void* sw_buddy_malloc	(	int	index,
		unsigned int	size
	)

allocates memory at the requested heap index for size bytes

Parameters

index
size

Returns

void sw_buddy_print_state ( void )

Prints the state of the heap allocations Whether heap is found for this task Heap size, no. of free and allocated blocks.

void sw_dump_mallocs ( void )

Prints the heap memory allocation related address and sizes.

void sw_free ( void * pointer )

Gets the task_id and frees the heap memory corresponding to the task_id.

Parameters

pointer

void sw_free_private	(	int	heap_id,
		void *	pointer
	)

Frees the privately allocated memory pointing to the heap_id and the address pointer.

Parameters

heap_id
pointer

int sw_heap_init	(	int	index,
		void *	heap_start,
		unsigned int	heap_size
	)

Heap memory initialization.

Parameters

heap_start
heap_size

Returns

Parameters

index
heap_start
heap_size

Returns

void* sw_malloc ( u32 size )

Gets the task id and allocates memory in the heap memory corresponding to the task.

Parameters

size

Returns

void sw_malloc_free ( void * ptr )

Frees the memory allocated by passing the address ptr.

Parameters

ptr

void sw_malloc_init ( void )

Initial Memory Allocation Heap also initialized.

void* sw_malloc_private	(	int	heap_id,
		u32	size
	)

Allocates memory privately for size bytes at the memory related to heap_id passed.

Parameters

heap_id
size

Returns

Variable Documentation

unsigned int bin_num

unsigned int blk_sz

unsigned int count

struct sw_alloced_area current

struct sw_free_area free_area[BINS_MAX_ORDER]

struct list head

unsigned int heap_size

void* heap_start

struct sw_alloced_area* hk_an_array

unsigned int hk_an_count

struct sw_free_area* hk_fn_array

unsigned int hk_fn_count

void * map

unsigned int mem_size

void* mem_start

unsigned int res0

Classes

Macros

Functions

Variables

Macro Definition Documentation

Function Documentation

Variable Documentation