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
  54 #define CMD(cmd) (( cmd == READ ) ? "read" : "write")
  55
  56 #define PDEBUG(page,cmd)        {\
  57                 char *uptodate = (Page_Uptodate(page)) ? "yes" : "no";\
  58                 char *locked = (PageLocked(page)) ? "yes" : "no";\
  59                 int count = page->count.counter;\
  60                 long ino = (page->inode) ? page->inode->i_ino : -1;\
  61                 long offset = page->offset / PAGE_SIZE;\
  62                 \
  63                 CDEBUG(D_IOCTL, " ** %s, cmd: %s, ino: %ld, off %ld, uptodate: %s, "\
  64                        "locked: %s, cnt %d ** \n", __FUNCTION__,\
  65                        cmd, ino, offset, uptodate, locked, count);\
  66         }
  67
  68
  69 #define OBD_ALLOC(ptr, cast, size)                                      \
  70 do {                                                                    \
  71         if (size <= 4096) {                                             \
  72                 ptr = (cast)kmalloc((unsigned long) size, GFP_KERNEL); \
  73                 CDEBUG(D_MALLOC, "kmalloced: %x at %x.\n",              \
  74                        (int) size, (int) ptr);                          \
  75         } else {                                                        \
  76                 ptr = (cast)vmalloc((unsigned long) size);              \
  77                 CDEBUG(D_MALLOC, "vmalloced: %x at %x.\n",              \
  78                        (int) size, (int) ptr);                          \
  79         }                                                               \
  80         if (ptr == 0) {                                                 \
  81                 printk("kernel malloc returns 0 at %s:%d\n",            \
  82                        __FILE__, __LINE__);                             \
  83         }                                                               \
  84         memset(ptr, 0, size);                                           \
  85 } while (0)
  86
  87 #define OBD_FREE(ptr,size)                              \
  88 do {                                                    \
  89         if (size <= 4096) {                             \
  90                 kfree_s((ptr), (size));                 \
  91                 CDEBUG(D_MALLOC, "kfreed: %x at %x.\n", \
  92                        (int) size, (int) ptr);          \
  93         } else {                                        \
  94                 vfree((ptr));                           \
  95                 CDEBUG(D_MALLOC, "vfreed: %x at %x.\n", \
  96                        (int) size, (int) ptr);          \
  97         }                                               \
  98 } while (0)
  99
 100
 101
 102 static inline void inode_to_iattr(struct inode *inode, struct iattr *tmp)
 103 {
 104         tmp->ia_mode = inode->i_mode;
 105         tmp->ia_uid = inode->i_uid;
 106         tmp->ia_gid = inode->i_gid;
 107         tmp->ia_size = inode->i_size;
 108         tmp->ia_atime = inode->i_atime;
 109         tmp->ia_mtime = inode->i_mtime;
 110         tmp->ia_ctime = inode->i_ctime;
 111         tmp->ia_attr_flags = inode->i_flags;
 112
 113         tmp->ia_valid = ~0;
 114 }
 115
 116 static inline void inode_cpy(struct inode *dest, struct inode *src)
 117 {
 118         dest->i_mode = src->i_mode;
 119         dest->i_uid = src->i_uid;
 120         dest->i_gid = src->i_gid;
 121         dest->i_size = src->i_size;
 122         dest->i_atime = src->i_atime;
 123         dest->i_mtime = src->i_mtime;
 124         dest->i_ctime = src->i_ctime;
 125         dest->i_attr_flags = src->i_flags;
 126         /* allocation of space */
 127         dest->i_blocks = src->i_blocks;
 128
 129         memcpy(&dest->u, &src->u, sizeof(src->u));
 130 }
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 140
 141 #endif