gfp.h revision 1.6 
1/* Public domain. */
2
3#ifndef _LINUX_GFP_H
4#define _LINUX_GFP_H
5
6#include <sys/types.h>
7#include <sys/malloc.h>
8#include <uvm/uvm_extern.h>
9
10#include <linux/mmzone.h>
11
12#define __GFP_ZERO		M_ZERO
13#define __GFP_DMA32		0x00010000
14#define __GFP_NOWARN		0
15#define __GFP_NORETRY		0
16#define __GFP_RETRY_MAYFAIL	0
17#define __GFP_MOVABLE		0
18#define __GFP_COMP		0
19#define __GFP_KSWAPD_RECLAIM	0
20#define __GFP_HIGHMEM		0
21#define __GFP_RECLAIMABLE	0
22#define __GFP_NOMEMALLOC	0
23
24#define GFP_ATOMIC		M_NOWAIT
25#define GFP_NOWAIT		M_NOWAIT
26#define GFP_KERNEL		(M_WAITOK | M_CANFAIL)
27#define GFP_USER		(M_WAITOK | M_CANFAIL)
28#define GFP_HIGHUSER		0
29#define GFP_DMA32		__GFP_DMA32
30#define GFP_TRANSHUGE_LIGHT	0
31
32static inline bool
33gfpflags_allow_blocking(const unsigned int flags)
34{
35	return (flags & M_WAITOK) != 0;
36}
37
38struct vm_page *alloc_pages(unsigned int, unsigned int);
39void	__free_pages(struct vm_page *, unsigned int);
40
41static inline struct vm_page *
42alloc_page(unsigned int gfp_mask)
43{
44	return alloc_pages(gfp_mask, 0);
45}
46
47static inline void
48__free_page(struct vm_page *page)
49{
50	__free_pages(page, 0);
51}
52
53static inline unsigned long
54__get_free_page(unsigned int gfp_mask)
55{
56	void *addr = km_alloc(PAGE_SIZE, &kv_page, &kp_dirty, &kd_nowait);
57	return (unsigned long)addr;
58}
59
60static inline void
61free_page(unsigned long addr)
62{
63	km_free((void *)addr, PAGE_SIZE, &kv_page, &kp_dirty);
64}
65
66#endif
67