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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2008 Silicon Graphics, Inc.
* All Rights Reserved.
*/
#ifndef __KMEM_H__
#define __KMEM_H__
#define KM_NOFS 0x0004u
#define KM_MAYFAIL 0x0008u
#define KM_LARGE 0x0010u
#define KM_NOLOCKDEP 0x0020u
struct kmem_cache {
int cache_unitsize; /* Size in bytes of cache unit */
int allocated; /* debug: How many allocated? */
unsigned int align;
const char *cache_name; /* tag name */
void (*ctor)(void *);
};
typedef unsigned int __bitwise gfp_t;
#define GFP_KERNEL ((__force gfp_t)0)
#define GFP_NOFS ((__force gfp_t)0)
#define __GFP_NOFAIL ((__force gfp_t)0)
#define __GFP_NOLOCKDEP ((__force gfp_t)0)
#define __GFP_RETRY_MAYFAIL ((__force gfp_t)0)
#define __GFP_ZERO ((__force gfp_t)1)
struct kmem_cache * kmem_cache_create(const char *name, unsigned int size,
unsigned int align, unsigned int slab_flags,
void (*ctor)(void *));
static inline struct kmem_cache *
kmem_cache_init(unsigned int size, const char *name)
{
return kmem_cache_create(name, size, 0, 0, NULL);
}
extern void *kmem_cache_alloc(struct kmem_cache *, gfp_t);
extern void *kmem_cache_zalloc(struct kmem_cache *, gfp_t);
extern int kmem_cache_destroy(struct kmem_cache *);
static inline void
kmem_cache_free(struct kmem_cache *cache, void *ptr)
{
cache->allocated--;
free(ptr);
}
extern void *kvmalloc(size_t, gfp_t);
extern void *krealloc(void *, size_t, int);
static inline void *kmalloc(size_t size, gfp_t flags)
{
return kvmalloc(size, flags);
}
#define kzalloc(size, gfp) kvmalloc((size), (gfp) | __GFP_ZERO)
#define kvzalloc(size, gfp) kzalloc((size), (gfp))
static inline void kfree(const void *ptr)
{
free((void *)ptr);
}
static inline void kvfree(const void *ptr)
{
kfree(ptr);
}
static inline void kfree_rcu_mightsleep(const void *ptr)
{
kfree(ptr);
}
__attribute__((format(printf,2,3)))
char *kasprintf(gfp_t gfp, const char *fmt, ...);
static inline void *kmemdup(const void *src, size_t len, gfp_t gfp)
{
void *p = kmalloc(len, gfp);
if (p)
memcpy(p, src, len);
return p;
}
#endif
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