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 /* Inode common information printed out */
  63 #define ICDEBUG(inode) { \
  64                 printk("]]%s line %d[[  ino %ld, blocks %ld, size %Ld, atm %ld, ctm %ld, mtm %ld, mode %o, uid %d, gid %d\n", \
  65                        __FUNCTION__ , __LINE__, \
  66                        inode->i_ino, inode->i_blocks, inode->i_size,\
  67                        inode->i_atime, inode->i_ctime, inode->i_mtime,\
  68                        inode->i_mode, inode->i_uid, inode->i_gid);\
  69         }
  70
  71 /* Ext2 inode information */
  72 #define EXDEBUG(inode) { \
  73                 ICDEBUG(inode);\
  74                 printk("data: 0x%08x 0x%08x 0x%08x 0x%08x\n",\
  75                        inode->u.ext2_i.i_data[0], inode->u.ext2_i.i_data[1],\
  76                        inode->u.ext2_i.i_data[2], inode->u.ext2_i.i_data[3]);\
  77         }
  78
  79 /* OBDFS inode information */
  80 /* Should print these with oi_flags and oi_list.prev, next instead of i_data */
  81 #define OIDEBUG(inode) { \
  82                 ICDEBUG(inode);\
  83                 printk("oinfo: flags 0x%08x next 0x%08x prev 0x%08x\n",\
  84                        inode->u.ext2_i.i_data[0], inode->u.ext2_i.i_data[1],\
  85                        inode->u.ext2_i.i_data[2]);\
  86         }
  87
  88 #define ODEBUG(obdo) { \
  89                 printk("]]%s line %d[[  id %Ld, atm %Ld, mtm %Ld, ctm %Ld, size %Ld, blocks %Ld\n",\
  90                        __FUNCTION__ , __LINE__, \
  91                        obdo->o_id, obdo->o_atime, obdo->o_mtime,\
  92                        obdo->o_ctime, obdo->o_size, obdo->o_blocks);\
  93                 printk("]]%s line %d[[  mode %o, uid %d, gid %d, flg 0x%0x, obdflg 0x%0x, nlnk %d, valid 0x%0x\n", \
  94                        __FUNCTION__ , __LINE__, \
  95                        obdo->o_mode, obdo->o_uid, obdo->o_gid,\
  96                        obdo->o_flags, obdo->o_obdflags, obdo->o_nlink,\
  97                        obdo->o_valid);\
  98         }
  99
 100
 101 #define PDEBUG(page,cmd)        {if (page){\
 102                 char *uptodate = (Page_Uptodate(page)) ? "yes" : "no";\
 103                 char *locked = (PageLocked(page)) ? "yes" : "no";\
 104                 int count = page->count.counter;\
 105                 long index = page->index;\
 106                 \
 107                 CDEBUG(D_IOCTL, " ** %s, cmd: %s, off %ld, uptodate: %s, "\
 108                        "locked: %s, cnt %d page %p pages %ld** \n", __FUNCTION__,\
 109                        cmd, index, uptodate, locked, count, page, (!page->mapping) ? -1 : page->mapping->nrpages);\
 110         } else { CDEBUG(D_IOCTL, "** %s, no page\n", __FUNCTION__); }}
 111
 112
 113 #define OBD_ALLOC(ptr, cast, size)                                      \
 114 do {                                                                    \
 115         if (size <= 4096) {                                             \
 116                 ptr = (cast)kmalloc((unsigned long) size, GFP_KERNEL); \
 117                 CDEBUG(D_MALLOC, "kmalloced: %x at %x.\n",              \
 118                        (int) size, (int) ptr);                          \
 119         } else {                                                        \
 120                 ptr = (cast)vmalloc((unsigned long) size);              \
 121                 CDEBUG(D_MALLOC, "vmalloced: %x at %x.\n",              \
 122                        (int) size, (int) ptr);                          \
 123         }                                                               \
 124         if (ptr == 0) {                                                 \
 125                 printk("kernel malloc returns 0 at %s:%d\n",            \
 126                        __FILE__, __LINE__);                             \
 127         }                                                               \
 128         memset(ptr, 0, size);                                           \
 129 } while (0)
 130
 131 #define OBD_FREE(ptr,size)                              \
 132 do {                                                    \
 133         if (size <= 4096) {                             \
 134                 kfree_s((ptr), (size));                 \
 135                 CDEBUG(D_MALLOC, "kfreed: %x at %x.\n", \
 136                        (int) size, (int) ptr);          \
 137         } else {                                        \
 138                 vfree((ptr));                           \
 139                 CDEBUG(D_MALLOC, "vfreed: %x at %x.\n", \
 140                        (int) size, (int) ptr);          \
 141         }                                               \
 142 } while (0)
 143
 144
 145 static inline struct page *addr_to_page(char *buf)
 146 {
 147         unsigned long addr = (unsigned long)buf;
 148         unsigned long map_nr;
 149
 150 #ifdef CONFIG_DISCONTIGMEM
 151         if (addr == 0) return;
 152 #endif
 153         map_nr = MAP_NR(addr);
 154         if (map_nr < max_mapnr)
 155                 return mem_map + map_nr;
 156         else
 157                 return 0;
 158 }
 159
 160
 161
 162 #endif