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* include/asm-ppc/rheap.c
* Header file for the implementation of a remote heap.
* Author: Pantelis Antoniou <>
* 2004 (c) INTRACOM S.A. Greece. This file is licensed under
* the terms of the GNU General Public License version 2. This program
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
#ifndef __ASM_PPC_RHEAP_H__
#define __ASM_PPC_RHEAP_H__
#include <linux/list.h>
typedef struct _rh_block {
struct list_head list;
void *start;
int size;
const char *owner;
} rh_block_t;
typedef struct _rh_info {
unsigned int alignment;
int max_blocks;
int empty_slots;
rh_block_t *block;
struct list_head empty_list;
struct list_head free_list;
struct list_head taken_list;
unsigned int flags;
} rh_info_t;
#define RHIF_STATIC_INFO 0x1
typedef struct rh_stats_t {
void *start;
int size;
const char *owner;
} rh_stats_t;
#define RHGS_FREE 0
#define RHGS_TAKEN 1
/* Create a remote heap dynamically */
extern rh_info_t *rh_create(unsigned int alignment);
/* Destroy a remote heap, created by rh_create() */
extern void rh_destroy(rh_info_t * info);
/* Initialize in place a remote info block */
extern void rh_init(rh_info_t * info, unsigned int alignment, int max_blocks,
rh_block_t * block);
/* Attach a free region to manage */
extern int rh_attach_region(rh_info_t * info, void *start, int size);
/* Detach a free region */
extern void *rh_detach_region(rh_info_t * info, void *start, int size);
/* Allocate the given size from the remote heap */
extern void *rh_alloc(rh_info_t * info, int size, const char *owner);
/* Allocate the given size from the given address */
extern void *rh_alloc_fixed(rh_info_t * info, void *start, int size,
const char *owner);
/* Free the allocated area */
extern int rh_free(rh_info_t * info, void *start);
/* Get stats for debugging purposes */
extern int rh_get_stats(rh_info_t * info, int what, int max_stats,
rh_stats_t * stats);
/* Simple dump of remote heap info */
extern void rh_dump(rh_info_t * info);
/* Set owner of taken block */
extern int rh_set_owner(rh_info_t * info, void *start, const char *owner);
#endif /* __ASM_PPC_RHEAP_H__ */