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 %0xld, obdflg %0xld, nlnk %d, valid %0xld\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