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_ */

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __PAT_INTERNAL_H_
 3#define __PAT_INTERNAL_H_
 4
 5extern int pat_debug_enable;
 6
 7#define dprintk(fmt, arg...) \
 8	do { if (pat_debug_enable) pr_info("x86/PAT: " fmt, ##arg); } while (0)
 9
10struct memtype {
11	u64			start;
12	u64			end;
13	u64			subtree_max_end;
14	enum page_cache_mode	type;
15	struct rb_node		rb;
16};
17
18static inline char *cattr_name(enum page_cache_mode pcm)
19{
20	switch (pcm) {
21	case _PAGE_CACHE_MODE_UC:		return "uncached";
22	case _PAGE_CACHE_MODE_UC_MINUS:		return "uncached-minus";
23	case _PAGE_CACHE_MODE_WB:		return "write-back";
24	case _PAGE_CACHE_MODE_WC:		return "write-combining";
25	case _PAGE_CACHE_MODE_WT:		return "write-through";
26	case _PAGE_CACHE_MODE_WP:		return "write-protected";
27	default:				return "broken";
28	}
29}
30
31#ifdef CONFIG_X86_PAT
32extern int rbt_memtype_check_insert(struct memtype *new,
33					enum page_cache_mode *new_type);
34extern struct memtype *rbt_memtype_erase(u64 start, u64 end);
35extern struct memtype *rbt_memtype_lookup(u64 addr);
36extern int rbt_memtype_copy_nth_element(struct memtype *out, loff_t pos);
37#else
38static inline int rbt_memtype_check_insert(struct memtype *new,
39					enum page_cache_mode *new_type)
40{ return 0; }
41static inline struct memtype *rbt_memtype_erase(u64 start, u64 end)
42{ return NULL; }
43static inline struct memtype *rbt_memtype_lookup(u64 addr)
44{ return NULL; }
45static inline int rbt_memtype_copy_nth_element(struct memtype *out, loff_t pos)
46{ return 0; }
47#endif
48
49#endif /* __PAT_INTERNAL_H_ */