WebSVN – HelenOS-historic – Diff – /kernel/trunk/generic/include/mm/frame.h



 
#define ONE_FRAME   0
 
#define ZONES_MAX       16      /**< Maximum number of zones in system */
 
#define ZONE_JOIN       0x1 /**< If possible, merge with neighberhood zones */
 
 
#define FRAME_KA        0x1 /* skip frames conflicting with user address space */
#define FRAME_PANIC     0x2 /* panic on failure */
#define FRAME_ATOMIC            0x4 /* do not panic and do not sleep on failure */
#define FRAME_NO_RECLAIM        0x8     /* do not start reclaiming when no free memory */
 
#define FRAME_OK        0   /* frame_alloc return status */
#define FRAME_NO_MEMORY     1   /* frame_alloc return status */
#define FRAME_ERROR     2   /* frame_alloc return status */
 

    return 0;
}
 
static inline __address PFN2ADDR(pfn_t frame)
{
    return (__address)(frame << FRAME_WIDTH);
}
 
static inline pfn_t ADDR2PFN(__address addr)
{
    return (pfn_t)(addr >> FRAME_WIDTH);
}
 
static inline pfn_t SIZE2PFN(__address size)
{
    if (!size)
        return 0;
    return (pfn_t)((size-1) >> FRAME_WIDTH)+1;
}
 
#define IS_BUDDY_ORDER_OK(index, order)     ((~(((__native) -1) << (order)) & (index)) == 0)
#define IS_BUDDY_LEFT_BLOCK(zone, frame)    (((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 0)
#define IS_BUDDY_RIGHT_BLOCK(zone, frame)   (((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 1)
#define IS_BUDDY_LEFT_BLOCK_ABS(zone, frame)    (((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 0)
#define IS_BUDDY_RIGHT_BLOCK_ABS(zone, frame)   (((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 1)
 
 
#define frame_alloc(order, flags)               frame_alloc_generic(order, flags, NULL, NULL)
#define frame_alloc_rc(order, flags, status)            frame_alloc_generic(order, flags, status, NULL)
#define frame_alloc_rc_zone(order, flags, status, zone)     frame_alloc_generic(order, flags, status, zone)
 
extern void frame_init(void);

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/generic/include/mm/frame.h – Rev 814 → 816

Rev 814		Rev 816
Line 39...		Line 39...
39		39
40	#define ONE_FRAME 0	40	#define ONE_FRAME 0
41		41
42	#define ZONES_MAX 16 /*< Maximum number of zones in system /	42	#define ZONES_MAX 16 /*< Maximum number of zones in system /
43		43
44	#define ZONE_JOIN 0x1 /*< If possible, merge with neighberhood zones /	44	#define ZONE_JOIN 0x1 /*< If possible, merge with neighberhood zones /
45		-
46		45
47	#define FRAME_KA 0x1 /* skip frames conflicting with user address space */	46	#define FRAME_KA 0x1 /* skip frames conflicting with user address space */
48	#define FRAME_PANIC 0x2 /* panic on failure */	47	#define FRAME_PANIC 0x2 /* panic on failure */
49	#define FRAME_ATOMIC 0x4 /* do not panic and do not sleep on failure */	48	#define FRAME_ATOMIC 0x4 /* do not panic and do not sleep on failure */
50	#define FRAME_NO_RECLAIM 0x8 /* Do not start reclaiming when no free memory */	49	#define FRAME_NO_RECLAIM 0x8 /* do not start reclaiming when no free memory */
51		50
52	#define FRAME_OK 0 /* frame_alloc return status */	51	#define FRAME_OK 0 /* frame_alloc return status */
53	#define FRAME_NO_MEMORY 1 /* frame_alloc return status */	52	#define FRAME_NO_MEMORY 1 /* frame_alloc return status */
54	#define FRAME_ERROR 2 /* frame_alloc return status */	53	#define FRAME_ERROR 2 /* frame_alloc return status */
55		54
Line 65...		Line 64...
65	return 0;	64	return 0;
66	}	65	}
67		66
68	static inline __address PFN2ADDR(pfn_t frame)	67	static inline __address PFN2ADDR(pfn_t frame)
69	{	68	{
70	return (__address)(frame << PAGE_WIDTH);	69	return (__address)(frame << FRAME_WIDTH);
71	}	70	}
72		71
73	static inline pfn_t ADDR2PFN(__address addr)	72	static inline pfn_t ADDR2PFN(__address addr)
74	{	73	{
75	return (pfn_t)(addr >> PAGE_WIDTH);	74	return (pfn_t)(addr >> FRAME_WIDTH);
76	}	75	}
77		76
78	static inline pfn_t SIZE2PFN(__address size)	77	static inline pfn_t SIZE2PFN(__address size)
79	{	78	{
80	if (!size)	79	if (!size)
81	return 0;	80	return 0;
82	return (pfn_t)((size-1) >> PAGE_WIDTH)+1;	81	return (pfn_t)((size-1) >> FRAME_WIDTH)+1;
83	}	82	}
84		83
85	#define IS_BUDDY_ORDER_OK(index, order) ((~(((__native) -1) << (order)) & (index)) == 0)	84	#define IS_BUDDY_ORDER_OK(index, order) ((~(((__native) -1) << (order)) & (index)) == 0)
86	#define IS_BUDDY_LEFT_BLOCK(zone, frame) (((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 0)	85	#define IS_BUDDY_LEFT_BLOCK(zone, frame) (((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 0)
87	#define IS_BUDDY_RIGHT_BLOCK(zone, frame) (((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 1)	86	#define IS_BUDDY_RIGHT_BLOCK(zone, frame) (((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 1)
88	#define IS_BUDDY_LEFT_BLOCK_ABS(zone, frame) (((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 0)	87	#define IS_BUDDY_LEFT_BLOCK_ABS(zone, frame) (((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 0)
89	#define IS_BUDDY_RIGHT_BLOCK_ABS(zone, frame) (((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 1)	88	#define IS_BUDDY_RIGHT_BLOCK_ABS(zone, frame) (((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 1)
90		89
91		-
92	#define frame_alloc(order, flags) frame_alloc_generic(order, flags, NULL, NULL)	90	#define frame_alloc(order, flags) frame_alloc_generic(order, flags, NULL, NULL)
93	#define frame_alloc_rc(order, flags, status) frame_alloc_generic(order, flags, status, NULL)	91	#define frame_alloc_rc(order, flags, status) frame_alloc_generic(order, flags, status, NULL)
94	#define frame_alloc_rc_zone(order, flags, status, zone) frame_alloc_generic(order, flags, status, zone)	92	#define frame_alloc_rc_zone(order, flags, status, zone) frame_alloc_generic(order, flags, status, zone)
95		93
96	extern void frame_init(void);	94	extern void frame_init(void);