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 MIN(a,b) (((a)<(b)) ? (a): (b))
   7 #define MAX(a,b) (((a)>(b)) ? (a): (b))
   8
   9 /*
  10  * Debug code
  11  */
  12 /* global variables */
  13 extern int obd_debug_level;
  14 extern int obd_print_entry;
  15
  16 #define EXT2_OBD_DEBUG
  17
  18 #ifdef EXT2_OBD_DEBUG
  19 #define CMD(cmd) (( cmd == READ ) ? "read" : "write")
  20
  21 /* debugging masks */
  22 #define D_PSDEV       1 /* debug information from psdev.c */
  23 #define D_INODE       2
  24 #define D_SUPER       4
  25 #define D_SNAP        8
  26 #define D_UNUSED     16
  27 #define D_WARNING    32 /* misc warnings */
  28 #define D_EXT2       64 /* anything from ext2_debug */
  29 #define D_MALLOC    128 /* print malloc, free information */
  30 #define D_CACHE     256 /* cache-related items */
  31 #define D_INFO      512 /* general information, especially from interface.c */
  32 #define D_IOCTL    1024 /* ioctl related information */
  33 #define D_BLOCKS   2048 /* ext2 block allocation */
  34 #define D_RPC      4096 /* rpc communications */
  35
  36 #define CDEBUG(mask, format, a...)                                      \
  37         do {                                                            \
  38         if (obd_debug_level & mask) {                                   \
  39                 printk("(%s:%d):", __FUNCTION__, __LINE__);             \
  40                 printk(format, ## a); }                                 \
  41         } while (0)
  42
  43 #define ENTRY if (obd_print_entry) \
  44                         printk(KERN_INFO "Process %d entered %s\n",\
  45                                current->pid, __FUNCTION__)
  46
  47 #define EXIT if (obd_print_entry) \
  48                         printk(KERN_INFO "Process %d leaving %s [%d]\n",\
  49                                current->pid, __FUNCTION__, __LINE__)
  50
  51 /* Inode common information printed out (used by obdfs and ext2obd inodes) */
  52 #define ICDEBUG(inode) { \
  53         CDEBUG(D_INFO, "]]%s line %d[[ ino %ld, atm %ld, mtm %ld, ctm %ld, "\
  54                "size %Ld, blocks %ld\n", __FUNCTION__ , __LINE__,\
  55                inode->i_ino, inode->i_atime, inode->i_mtime, inode->i_ctime,\
  56                inode->i_size, inode->i_blocks);\
  57         CDEBUG(D_INFO,\
  58                "]]%s line %d[[ mode %o, uid %d, gid %d, nlnk %d, count %d\n",\
  59                __FUNCTION__, __LINE__, inode->i_mode, inode->i_uid,\
  60                inode->i_gid, inode->i_nlink, inode->i_count);\
  61 }
  62
  63 /* Ext2 inode information */
  64 #define EXDEBUG(inode) { \
  65         ICDEBUG(inode);\
  66         CDEBUG(D_INFO, "ext2 blocks: %d %d %d %d %d %d %d %d\n",\
  67                inode->u.ext2_i.i_data[0], inode->u.ext2_i.i_data[1],\
  68                inode->u.ext2_i.i_data[2], inode->u.ext2_i.i_data[3],\
  69                inode->u.ext2_i.i_data[4], inode->u.ext2_i.i_data[5],\
  70                inode->u.ext2_i.i_data[6], inode->u.ext2_i.i_data[7]);\
  71 }
  72
  73 /* OBDFS inode information */
  74 #define OIDEBUG(inode) { \
  75         ICDEBUG(inode);\
  76         CDEBUG(D_INFO,"oinfo: flags 0x%08x\n", obdfs_i2info(inode)->oi_flags);\
  77         /* obdfs_print_plist(inode); */\
  78 }
  79
  80 #define ODEBUG(obdo) { \
  81         CDEBUG(D_INFO, "]]%s line %d[[  id %ld, atm %ld, mtm %ld, ctm %ld, "\
  82                "size %ld, blocks %ld\n", __FUNCTION__ , __LINE__,\
  83                (long)(obdo)->o_id, (long)(obdo)->o_atime,\
  84                (long)(obdo)->o_mtime, (long)(obdo)->o_ctime,\
  85                (long)(obdo)->o_size, (long)(obdo)->o_blocks);\
  86         CDEBUG(D_INFO, "]]%s line %d[[  mode %o, uid %d, gid %d, flg 0x%0x, "\
  87                "obdflg 0x%0x, nlnk %d, valid 0x%0x\n", __FUNCTION__ , __LINE__,\
  88                (obdo)->o_mode, (obdo)->o_uid, (obdo)->o_gid, (obdo)->o_flags,\
  89                (obdo)->o_obdflags, (obdo)->o_nlink, (obdo)->o_valid);\
  90 }
  91
  92
  93 #define PDEBUG(page,cmd) { \
  94         if (page){\
  95                 char *uptodate = (Page_Uptodate(page)) ? "yes" : "no";\
  96                 char *locked = (PageLocked(page)) ? "yes" : "no";\
  97                 int count = page->count.counter;\
  98                 long index = page->index;\
  99                 CDEBUG(D_CACHE, " ** %s, cmd: %s, off %ld, uptodate: %s, "\
 100                        "locked: %s, cnt %d page %p pages %ld** \n",\
 101                        __FUNCTION__, cmd, index, uptodate, locked, count, \
 102                        page, (!page->mapping) ? -1 : page->mapping->nrpages);\
 103         } else \
 104                 CDEBUG(D_CACHE, "** %s, no page\n", __FUNCTION__);\
 105 }
 106
 107 #else /* EXT2_OBD_DEBUG */
 108
 109 #define CDEBUG(mask, format, a...) {}
 110 #define ENTRY {}
 111 #define EXIT {}
 112 #define ODEBUG(obdo) {}
 113 #define EXDEBUG(inode) {}
 114 #define OIDEBUG(inode) {}
 115 #define PDEBUG(page, cmd) {}
 116
 117 #endif /* EXT2_OBD_DEBUG */
 118
 119
 120
 121 #define OBD_ALLOC(ptr, cast, size)                                      \
 122 do {                                                                    \
 123         if (size <= 4096) {                                             \
 124                 ptr = (cast)kmalloc((unsigned long) size, GFP_KERNEL); \
 125                 CDEBUG(D_MALLOC, "kmalloced: %x at %x.\n",              \
 126                        (int) size, (int) ptr);                          \
 127         } else {                                                        \
 128                 ptr = (cast)vmalloc((unsigned long) size);              \
 129                 CDEBUG(D_MALLOC, "vmalloced: %x at %x.\n",              \
 130                        (int) size, (int) ptr);                          \
 131         }                                                               \
 132         if (ptr == 0) {                                                 \
 133                 printk("kernel malloc returns 0 at %s:%d\n",            \
 134                        __FILE__, __LINE__);                             \
 135         }                                                               \
 136         memset(ptr, 0, size);                                           \
 137 } while (0)
 138
 139 #define OBD_FREE(ptr,size)                              \
 140 do {                                                    \
 141         if (size <= 4096) {                             \
 142                 kfree_s((ptr), (size));                 \
 143                 CDEBUG(D_MALLOC, "kfreed: %x at %x.\n", \
 144                        (int) size, (int) ptr);          \
 145         } else {                                        \
 146                 vfree((ptr));                           \
 147                 CDEBUG(D_MALLOC, "vfreed: %x at %x.\n", \
 148                        (int) size, (int) ptr);          \
 149         }                                               \
 150 } while (0)
 151
 152
 153
 154 #endif