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[fs/lustre-release.git] / lustre / include / linux / obd_support.h
1
2 #ifndef _OBD_SUPPORT
3 #define _OBD_SUPPORT
4 #include <linux/malloc.h>
5 #include <linux/vmalloc.h>
6
7 #define EXT2_OBD_DEBUG
8
9
10 #define MIN(a,b) (((a)<(b)) ? (a): (b))
11 #define MAX(a,b) (((a)>(b)) ? (a): (b))
12
13 /*
14  * Debug code
15  */
16 /* global variables */
17 extern int obd_debug_level;
18 extern int obd_print_entry;
19
20 /* debugging masks */
21 #define D_PSDEV       1 /* debug information from psdev.c */
22 #define D_INODE       2
23 #define D_SUPER       4
24 #define D_SNAP        8
25 #define D_UNUSED4    16
26 #define D_WARNING    32 /* misc warnings */
27 #define D_EXT2       64 /* anything from ext2_debug */
28 #define D_MALLOC    128 /* print malloc, free information */
29 #define D_CACHE     256 /* cache-related items */
30 #define D_INFO      512 /* general information, especially from interface.c */
31 #define D_IOCTL    1024 /* ioctl related information */
32 #define D_BLOCKS   2048 /* ext2 block allocation */
33 #define D_RPC      4096 /* ext2 block allocation */
34  
35 #ifdef EXT2_OBD_DEBUG
36 #define CDEBUG(mask, format, a...)                                      \
37         do {                                                            \
38         if (obd_debug_level & mask) {                                   \
39                 printk("(%s,l. %d): ",  __FUNCTION__, __LINE__);        \
40                 printk(format, ## a); }                                 \
41         } while (0)
42
43 #define ENTRY                                                                 \
44         if (obd_print_entry)                                                  \
45                 printk("Process %d entered %s\n", current->pid, __FUNCTION__)
46
47 #define EXIT                                                                  \
48         if (obd_print_entry)                                                  \
49                 printk("Process %d leaving %s [%d]\n", current->pid, __FUNCTION__, __LINE__)
50
51 #else /* EXT2_OBD_DEBUG */
52
53 #       define CDEBUG ;
54 #       define ENTRY ;
55 #       define EXIT ;
56
57 #endif /* EXT2_OBD_DEBUG */
58
59
60 #define CMD(cmd) (( cmd == READ ) ? "read" : "write")
61
62 #define IDEBUG(inode) { \
63                 printk("]]%s line %d[[  ino %ld, blocks %ld, size %Ld, atm %ld, ctim %ld, mtm %ld, mode %o, uid %d, gid %d\n", \
64                        __FUNCTION__ , __LINE__, \
65                        inode->i_ino, inode->i_blocks, inode->i_size,\
66                        inode->i_atime, inode->i_ctime, inode->i_mtime,\
67                        inode->i_mode, inode->i_uid, inode->i_gid);\
68                 printk("blk: %d %d %d %d %d %d %d %d %d %d\n",\
69                        inode->u.ext2_i.i_data[0], inode->u.ext2_i.i_data[1],\
70                        inode->u.ext2_i.i_data[2], inode->u.ext2_i.i_data[3],\
71                        inode->u.ext2_i.i_data[4], inode->u.ext2_i.i_data[5],\
72                        inode->u.ext2_i.i_data[6], inode->u.ext2_i.i_data[7],\
73                        inode->u.ext2_i.i_data[8], inode->u.ext2_i.i_data[9]);\
74         }
75
76 #define ODEBUG(obdo) { \
77                 printk("]]%s line %d[[  id %Ld, atm %Ld, mtm %Ld, ctm %Ld, size %Ld, blocks %Ld\n",\
78                        __FUNCTION__ , __LINE__, \
79                        obdo->o_id, obdo->o_atime, obdo->o_mtime,\
80                        obdo->o_ctime, obdo->o_size, obdo->o_blocks);\
81                 printk("]]%s line %d[[  mode %o, uid %d, gid %d, flg %0x, obdflg %0x, nlnk %d, valid %0x\n", \
82                        __FUNCTION__ , __LINE__, \
83                        obdo->o_mode, obdo->o_uid, obdo->o_gid,\
84                        obdo->o_flags, obdo->o_obdflags, obdo->o_nlink,\
85                        obdo->o_valid);\
86         }
87
88
89 #define PDEBUG(page,cmd)        {if (page){\
90                 char *uptodate = (Page_Uptodate(page)) ? "yes" : "no";\
91                 char *locked = (PageLocked(page)) ? "yes" : "no";\
92                 int count = page->count.counter;\
93                 long index = page->index;\
94                 \
95                 CDEBUG(D_IOCTL, " ** %s, cmd: %s, off %ld, uptodate: %s, "\
96                        "locked: %s, cnt %d page %p pages %ld** \n", __FUNCTION__,\
97                        cmd, index, uptodate, locked, count, page, (!page->mapping) ? -1 : page->mapping->nrpages);\
98         } else { CDEBUG(D_IOCTL, "** %s, no page\n", __FUNCTION__); }}
99
100
101 #define OBD_ALLOC(ptr, cast, size)                                      \
102 do {                                                                    \
103         if (size <= 4096) {                                             \
104                 ptr = (cast)kmalloc((unsigned long) size, GFP_KERNEL); \
105                 CDEBUG(D_MALLOC, "kmalloced: %x at %x.\n",              \
106                        (int) size, (int) ptr);                          \
107         } else {                                                        \
108                 ptr = (cast)vmalloc((unsigned long) size);              \
109                 CDEBUG(D_MALLOC, "vmalloced: %x at %x.\n",              \
110                        (int) size, (int) ptr);                          \
111         }                                                               \
112         if (ptr == 0) {                                                 \
113                 printk("kernel malloc returns 0 at %s:%d\n",            \
114                        __FILE__, __LINE__);                             \
115         }                                                               \
116         memset(ptr, 0, size);                                           \
117 } while (0)
118
119 #define OBD_FREE(ptr,size)                              \
120 do {                                                    \
121         if (size <= 4096) {                             \
122                 kfree_s((ptr), (size));                 \
123                 CDEBUG(D_MALLOC, "kfreed: %x at %x.\n", \
124                        (int) size, (int) ptr);          \
125         } else {                                        \
126                 vfree((ptr));                           \
127                 CDEBUG(D_MALLOC, "vfreed: %x at %x.\n", \
128                        (int) size, (int) ptr);          \
129         }                                               \
130 } while (0)
131
132
133 static inline struct page *addr_to_page(char *buf)
134 {
135         unsigned long addr = (unsigned long)buf;
136         unsigned long map_nr;
137
138 #ifdef CONFIG_DISCONTIGMEM
139         if (addr == 0) return;
140 #endif
141         map_nr = MAP_NR(addr);
142         if (map_nr < max_mapnr)
143                 return mem_map + map_nr;
144         else 
145                 return 0;
146 }
147
148
149
150 #endif