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Added code for obdfs to do writes to files and reads of directories and
[fs/lustre-release.git] / lustre / include / linux / obd_support.h
1 #ifndef _OBD_SUPPORT
2 #define _OBD_SUPPORT
3 #include <linux/malloc.h>
4 #include <linux/vmalloc.h>
5
6 #define SIM_OBD_DEBUG
7
8 /*
9  * Debug code
10  */
11 /* global variables */
12 extern int obd_debug_level;
13 extern int obd_print_entry;
14
15 /* debugging masks */
16 #define D_PSDEV       1 /* debug information from psdev.c */
17 #define D_INODE       2
18 #define D_UNUSED2     4
19 #define D_UNUSED3     8
20 #define D_UNUSED4    16
21 #define D_WARNING    32 /* misc warnings */
22 #define D_EXT2       64 /* anything from ext2_debug */
23 #define D_MALLOC    128 /* print malloc, free information */
24 #define D_CACHE     256 /* cache-related items */
25 #define D_INFO      512 /* general information, especially from interface.c */
26 #define D_IOCTL    1024 /* ioctl related information */
27 #define D_BLOCKS   2048 /* ext2 block allocation */
28  
29 #ifdef SIM_OBD_DEBUG
30 #define CDEBUG(mask, format, a...)                                      \
31         do {                                                            \
32         if (obd_debug_level & mask) {                                   \
33                 printk("(%s,l. %d): ",  __FUNCTION__, __LINE__);        \
34                 printk(format, ## a); }                                 \
35         } while (0)
36
37 #define ENTRY                                                                 \
38         if (obd_print_entry)                                                  \
39                 printk("Process %d entered %s\n", current->pid, __FUNCTION__)
40
41 #define EXIT                                                                  \
42         if (obd_print_entry)                                                  \
43                 printk("Process %d leaving %s\n", current->pid, __FUNCTION__)
44
45 #else /* SIM_OBD_DEBUG */
46
47 #       define CDEBUG ;
48 #       define ENTRY ;
49 #       define EXIT ;
50
51 #endif /* SIM_OBD_DEBUG */
52
53 #define PDEBUG(page,cmd)        {\
54                 char *command = ( cmd == READ ) ? "read" : "write";\
55                 char *uptodate = (Page_Uptodate(page)) ? "yes" : "no";\
56                 char *locked = (PageLocked(page)) ? "yes" : "no";\
57                 int count = page->count.counter;\
58                 long ino = (page->inode) ? page->inode->i_ino : -1;\
59                 \
60                 CDEBUG(D_IOCTL, " ** %s, cmd: %s, ino: %ld, uptodate: %s, "\
61                        "locked: %s, cnt %d ** \n", __FUNCTION__,\
62                        command, ino, uptodate, locked, count);\
63         }
64
65
66 #define OBD_ALLOC(ptr, cast, size)                                      \
67 do {                                                                    \
68         if (size <= 4096) {                                             \
69                 ptr = (cast)kmalloc((unsigned long) size, GFP_KERNEL); \
70                 CDEBUG(D_MALLOC, "kmalloced: %x at %x.\n",              \
71                        (int) size, (int) ptr);                          \
72         } else {                                                        \
73                 ptr = (cast)vmalloc((unsigned long) size);              \
74                 CDEBUG(D_MALLOC, "vmalloced: %x at %x.\n",              \
75                        (int) size, (int) ptr);                          \
76         }                                                               \
77         if (ptr == 0) {                                                 \
78                 printk("kernel malloc returns 0 at %s:%d\n",            \
79                        __FILE__, __LINE__);                             \
80         }                                                               \
81         memset(ptr, 0, size);                                           \
82 } while (0)
83
84 #define OBD_FREE(ptr,size)                              \
85 do {                                                    \
86         if (size <= 4096) {                             \
87                 kfree_s((ptr), (size));                 \
88                 CDEBUG(D_MALLOC, "kfreed: %x at %x.\n", \
89                        (int) size, (int) ptr);          \
90         } else {                                        \
91                 vfree((ptr));                           \
92                 CDEBUG(D_MALLOC, "vfreed: %x at %x.\n", \
93                        (int) size, (int) ptr);          \
94         }                                               \
95 } while (0)
96
97 #endif