[deliverable/linux.git] / arch / x86 / mm / pat_internal.h

#ifndef __PAT_INTERNAL_H_
#define __PAT_INTERNAL_H_

extern int pat_debug_enable;

#define dprintk(fmt, arg...) \
	do { if (pat_debug_enable) pr_info("x86/PAT: " fmt, ##arg); } while (0)

struct memtype {
	u64			start;
	u64			end;
	u64			subtree_max_end;
	enum page_cache_mode	type;
	struct rb_node		rb;
};

static inline char *cattr_name(enum page_cache_mode pcm)
{
	switch (pcm) {
	case _PAGE_CACHE_MODE_UC:		return "uncached";
	case _PAGE_CACHE_MODE_UC_MINUS:		return "uncached-minus";
	case _PAGE_CACHE_MODE_WB:		return "write-back";
	case _PAGE_CACHE_MODE_WC:		return "write-combining";
	case _PAGE_CACHE_MODE_WT:		return "write-through";
	case _PAGE_CACHE_MODE_WP:		return "write-protected";
	default:				return "broken";
	}
}

#ifdef CONFIG_X86_PAT
extern int rbt_memtype_check_insert(struct memtype *new,
					enum page_cache_mode *new_type);
extern struct memtype *rbt_memtype_erase(u64 start, u64 end);
extern struct memtype *rbt_memtype_lookup(u64 addr);
extern int rbt_memtype_copy_nth_element(struct memtype *out, loff_t pos);
#else
static inline int rbt_memtype_check_insert(struct memtype *new,
					enum page_cache_mode *new_type)
{ return 0; }
static inline struct memtype *rbt_memtype_erase(u64 start, u64 end)
{ return NULL; }
static inline struct memtype *rbt_memtype_lookup(u64 addr)
{ return NULL; }
static inline int rbt_memtype_copy_nth_element(struct memtype *out, loff_t pos)
{ return 0; }
#endif

#endif /* __PAT_INTERNAL_H_ */
Commit	Line	Data
be5a0c12	1	#ifndef __PAT_INTERNAL_H_
	2	#define __PAT_INTERNAL_H_
	3
	4	extern int pat_debug_enable;
	5
	6	#define dprintk(fmt, arg...) \
9e76561f	7	do { if (pat_debug_enable) pr_info("x86/PAT: " fmt, ##arg); } while (0)
be5a0c12	8
	9	struct memtype {
	10	u64 start;
	11	u64 end;
9e41a49a	12	u64 subtree_max_end;
e00c8cc9	13	enum page_cache_mode type;
be5a0c12	14	struct rb_node rb;
	15	};
	16
e00c8cc9	17	static inline char *cattr_name(enum page_cache_mode pcm)
be5a0c12	18	{
e00c8cc9 JG	19	switch (pcm) {
	20	case _PAGE_CACHE_MODE_UC: return "uncached";
	21	case _PAGE_CACHE_MODE_UC_MINUS: return "uncached-minus";
	22	case _PAGE_CACHE_MODE_WB: return "write-back";
	23	case _PAGE_CACHE_MODE_WC: return "write-combining";
	24	case _PAGE_CACHE_MODE_WT: return "write-through";
	25	case _PAGE_CACHE_MODE_WP: return "write-protected";
	26	default: return "broken";
be5a0c12	27	}
	28	}
	29
9e41a49a PV	30	#ifdef CONFIG_X86_PAT
9e41a49a PV	31	extern int rbt_memtype_check_insert(struct memtype *new,
e00c8cc9	32	enum page_cache_mode *new_type);
20413f27	33	extern struct memtype *rbt_memtype_erase(u64 start, u64 end);
9e41a49a PV	34	extern struct memtype *rbt_memtype_lookup(u64 addr);
	35	extern int rbt_memtype_copy_nth_element(struct memtype *out, loff_t pos);
	36	#else
	37	static inline int rbt_memtype_check_insert(struct memtype *new,
e00c8cc9	38	enum page_cache_mode *new_type)
9e41a49a	39	{ return 0; }
20413f27 XF	40	static inline struct memtype *rbt_memtype_erase(u64 start, u64 end)
20413f27 XF	41	{ return NULL; }
9e41a49a PV	42	static inline struct memtype *rbt_memtype_lookup(u64 addr)
	43	{ return NULL; }
	44	static inline int rbt_memtype_copy_nth_element(struct memtype *out, loff_t pos)
	45	{ return 0; }
	46	#endif
	47
be5a0c12	48	#endif /* __PAT_INTERNAL_H_ */