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 (used by obdfs and ext2obd inodes) */
  63 #define ICDEBUG(inode) { \
  64         printk("]]%s line %d[[ ino %ld, atm %ld, mtm %ld, ctm %ld, "\
  65                "size %Ld, blocks %ld\n", __FUNCTION__ , __LINE__,\
  66                inode->i_ino, inode->i_atime, inode->i_mtime, inode->i_ctime,\
  67                inode->i_size, inode->i_blocks);\
  68         printk("]]%s line %d[[ mode %o, uid %d, gid %d, nlnk %d, count %d\n",\
  69                __FUNCTION__, __LINE__, inode->i_mode, inode->i_uid,\
  70                inode->i_gid, inode->i_nlink, inode->i_count);\
  71 }
  72
  73 /* Ext2 inode information */
  74 #define EXDEBUG(inode) { \
  75         ICDEBUG(inode);\
  76         printk("ext2 blocks: %d %d %d %d %d %d %d %d\n",\
  77                inode->u.ext2_i.i_data[0], inode->u.ext2_i.i_data[1],\
  78                inode->u.ext2_i.i_data[2], inode->u.ext2_i.i_data[3],\
  79                inode->u.ext2_i.i_data[4], inode->u.ext2_i.i_data[5],\
  80                inode->u.ext2_i.i_data[6], inode->u.ext2_i.i_data[7]);\
  81 }
  82
  83 /* OBDFS inode information */
  84 #define OIDEBUG(inode) { \
  85         ICDEBUG(inode);\
  86         printk("oinfo: flags 0x%08x\n", OBDFS_INFO(inode)->oi_flags);\
  87         /* obdfs_print_plist(inode); */\
  88 }
  89
  90 #define ODEBUG(obdo) { \
  91         printk("]]%s line %d[[  id %ld, atm %ld, mtm %ld, ctm %ld, "\
  92                "size %ld, blocks %ld\n", __FUNCTION__ , __LINE__,\
  93                (long)(obdo)->o_id, (long)(obdo)->o_atime,\
  94                (long)(obdo)->o_mtime, (long)(obdo)->o_ctime,\
  95                (long)(obdo)->o_size, (long)(obdo)->o_blocks);\
  96         printk("]]%s line %d[[  mode %o, uid %d, gid %d, flg 0x%0x, "\
  97                "obdflg 0x%0x, nlnk %d, valid 0x%0x\n", __FUNCTION__ , __LINE__,\
  98                (obdo)->o_mode, (obdo)->o_uid, (obdo)->o_gid, (obdo)->o_flags,\
  99                (obdo)->o_obdflags, (obdo)->o_nlink, (obdo)->o_valid);\
 100 }
 101
 102
 103 #define PDEBUG(page,cmd) { \
 104         if (page){\
 105                 char *uptodate = (Page_Uptodate(page)) ? "yes" : "no";\
 106                 char *locked = (PageLocked(page)) ? "yes" : "no";\
 107                 int count = page->count.counter;\
 108                 long index = page->index;\
 109                 CDEBUG(D_IOCTL, " ** %s, cmd: %s, off %ld, uptodate: %s, "\
 110                        "locked: %s, cnt %d page %p pages %ld** \n",\
 111                        __FUNCTION__, cmd, index, uptodate, locked, count, \
 112                        page, (!page->mapping) ? -1 : page->mapping->nrpages);\
 113         } else \
 114                 CDEBUG(D_IOCTL, "** %s, no page\n", __FUNCTION__);\
 115 }
 116
 117
 118 #define OBD_ALLOC(ptr, cast, size)                                      \
 119 do {                                                                    \
 120         if (size <= 4096) {                                             \
 121                 ptr = (cast)kmalloc((unsigned long) size, GFP_KERNEL); \
 122                 CDEBUG(D_MALLOC, "kmalloced: %x at %x.\n",              \
 123                        (int) size, (int) ptr);                          \
 124         } else {                                                        \
 125                 ptr = (cast)vmalloc((unsigned long) size);              \
 126                 CDEBUG(D_MALLOC, "vmalloced: %x at %x.\n",              \
 127                        (int) size, (int) ptr);                          \
 128         }                                                               \
 129         if (ptr == 0) {                                                 \
 130                 printk("kernel malloc returns 0 at %s:%d\n",            \
 131                        __FILE__, __LINE__);                             \
 132         }                                                               \
 133         memset(ptr, 0, size);                                           \
 134 } while (0)
 135
 136 #define OBD_FREE(ptr,size)                              \
 137 do {                                                    \
 138         if (size <= 4096) {                             \
 139                 kfree_s((ptr), (size));                 \
 140                 CDEBUG(D_MALLOC, "kfreed: %x at %x.\n", \
 141                        (int) size, (int) ptr);          \
 142         } else {                                        \
 143                 vfree((ptr));                           \
 144                 CDEBUG(D_MALLOC, "vfreed: %x at %x.\n", \
 145                        (int) size, (int) ptr);          \
 146         }                                               \
 147 } while (0)
 148
 149
 150
 151 #endif