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/arch/x86/mm/pat_internal.h

https://bitbucket.org/ndreys/linux-sunxi
C++ Header | 46 lines | 40 code | 6 blank | 0 comment | 3 complexity | 6c38470512fcbfacad331f99721b051e MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
 1#ifndef __PAT_INTERNAL_H_
 2#define __PAT_INTERNAL_H_
 3
 4extern int pat_debug_enable;
 5
 6#define dprintk(fmt, arg...) \
 7	do { if (pat_debug_enable) printk(KERN_INFO fmt, ##arg); } while (0)
 8
 9struct memtype {
10	u64			start;
11	u64			end;
12	u64			subtree_max_end;
13	unsigned long		type;
14	struct rb_node		rb;
15};
16
17static inline char *cattr_name(unsigned long flags)
18{
19	switch (flags & _PAGE_CACHE_MASK) {
20	case _PAGE_CACHE_UC:		return "uncached";
21	case _PAGE_CACHE_UC_MINUS:	return "uncached-minus";
22	case _PAGE_CACHE_WB:		return "write-back";
23	case _PAGE_CACHE_WC:		return "write-combining";
24	default:			return "broken";
25	}
26}
27
28#ifdef CONFIG_X86_PAT
29extern int rbt_memtype_check_insert(struct memtype *new,
30					unsigned long *new_type);
31extern struct memtype *rbt_memtype_erase(u64 start, u64 end);
32extern struct memtype *rbt_memtype_lookup(u64 addr);
33extern int rbt_memtype_copy_nth_element(struct memtype *out, loff_t pos);
34#else
35static inline int rbt_memtype_check_insert(struct memtype *new,
36					unsigned long *new_type)
37{ return 0; }
38static inline struct memtype *rbt_memtype_erase(u64 start, u64 end)
39{ return NULL; }
40static inline struct memtype *rbt_memtype_lookup(u64 addr)
41{ return NULL; }
42static inline int rbt_memtype_copy_nth_element(struct memtype *out, loff_t pos)
43{ return 0; }
44#endif
45
46#endif /* __PAT_INTERNAL_H_ */