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 #define CMD(cmd) (( cmd == READ ) ? "read" : "write")
  21
  22 #ifdef EXT2_OBD_DEBUG
  23 /* debugging masks */
  24 #define D_PSDEV       1 /* debug information from psdev.c */
  25 #define D_INODE       2
  26 #define D_SUPER       4
  27 #define D_SNAP        8
  28 #define D_UNUSED4    16
  29 #define D_WARNING    32 /* misc warnings */
  30 #define D_EXT2       64 /* anything from ext2_debug */
  31 #define D_MALLOC    128 /* print malloc, free information */
  32 #define D_CACHE     256 /* cache-related items */
  33 #define D_INFO      512 /* general information, especially from interface.c */
  34 #define D_IOCTL    1024 /* ioctl related information */
  35 #define D_BLOCKS   2048 /* ext2 block allocation */
  36 #define D_RPC      4096 /* rpc communications */
  37
  38 #define CDEBUG(mask, format, a...)                                      \
  39         do {                                                            \
  40         if (obd_debug_level & mask) {                                   \
  41                 printk("(%s,l. %d): ",  __FUNCTION__, __LINE__);        \
  42                 printk(format, ## a); }                                 \
  43         } while (0)
  44
  45 #define ENTRY                                                                 \
  46         if (obd_print_entry)                                                  \
  47                 printk("Process %d entered %s\n", current->pid, __FUNCTION__)
  48
  49 #define EXIT                                                                  \
  50         if (obd_print_entry)                                                  \
  51                 printk("Process %d leaving %s [%d]\n", current->pid, __FUNCTION__, __LINE__)
  52
  53 /* Inode common information printed out (used by obdfs and ext2obd inodes) */
  54 #define ICDEBUG(inode) { \
  55         printk("]]%s line %d[[ ino %ld, atm %ld, mtm %ld, ctm %ld, "\
  56                "size %Ld, blocks %ld\n", __FUNCTION__ , __LINE__,\
  57                inode->i_ino, inode->i_atime, inode->i_mtime, inode->i_ctime,\
  58                inode->i_size, inode->i_blocks);\
  59         printk("]]%s line %d[[ mode %o, uid %d, gid %d, nlnk %d, count %d\n",\
  60                __FUNCTION__, __LINE__, inode->i_mode, inode->i_uid,\
  61                inode->i_gid, inode->i_nlink, inode->i_count);\
  62 }
  63
  64 /* Ext2 inode information */
  65 #define EXDEBUG(inode) { \
  66         ICDEBUG(inode);\
  67         printk("ext2 blocks: %d %d %d %d %d %d %d %d\n",\
  68                inode->u.ext2_i.i_data[0], inode->u.ext2_i.i_data[1],\
  69                inode->u.ext2_i.i_data[2], inode->u.ext2_i.i_data[3],\
  70                inode->u.ext2_i.i_data[4], inode->u.ext2_i.i_data[5],\
  71                inode->u.ext2_i.i_data[6], inode->u.ext2_i.i_data[7]);\
  72 }
  73
  74 /* OBDFS inode information */
  75 #define OIDEBUG(inode) { \
  76         ICDEBUG(inode);\
  77         printk("oinfo: flags 0x%08x\n", obdfs_i2info(inode)->oi_flags);\
  78         /* obdfs_print_plist(inode); */\
  79 }
  80
  81 #define ODEBUG(obdo) { \
  82         printk("]]%s line %d[[  id %ld, atm %ld, mtm %ld, ctm %ld, "\
  83                "size %ld, blocks %ld\n", __FUNCTION__ , __LINE__,\
  84                (long)(obdo)->o_id, (long)(obdo)->o_atime,\
  85                (long)(obdo)->o_mtime, (long)(obdo)->o_ctime,\
  86                (long)(obdo)->o_size, (long)(obdo)->o_blocks);\
  87         printk("]]%s line %d[[  mode %o, uid %d, gid %d, flg 0x%0x, "\
  88                "obdflg 0x%0x, nlnk %d, valid 0x%0x\n", __FUNCTION__ , __LINE__,\
  89                (obdo)->o_mode, (obdo)->o_uid, (obdo)->o_gid, (obdo)->o_flags,\
  90                (obdo)->o_obdflags, (obdo)->o_nlink, (obdo)->o_valid);\
  91 }
  92
  93
  94 #define PDEBUG(page,cmd) { \
  95         if (page){\
  96                 char *uptodate = (Page_Uptodate(page)) ? "yes" : "no";\
  97                 char *locked = (PageLocked(page)) ? "yes" : "no";\
  98                 int count = page->count.counter;\
  99                 long index = page->index;\
 100                 CDEBUG(D_IOCTL, " ** %s, cmd: %s, off %ld, uptodate: %s, "\
 101                        "locked: %s, cnt %d page %p pages %ld** \n",\
 102                        __FUNCTION__, cmd, index, uptodate, locked, count, \
 103                        page, (!page->mapping) ? -1 : page->mapping->nrpages);\
 104         } else \
 105                 CDEBUG(D_IOCTL, "** %s, no page\n", __FUNCTION__);\
 106 }
 107
 108 #else /* EXT2_OBD_DEBUG */
 109
 110 #define CDEBUG(mask, format, a...) {}
 111 #define ENTRY {}
 112 #define EXIT {}
 113 #define ODEBUG(obdo) {}
 114 #define EXDEBUG(inode) {}
 115 #define OIDEBUG(inode) {}
 116 #define PDEBUG(page, cmd) {}
 117
 118 #endif /* EXT2_OBD_DEBUG */
 119
 120
 121
 122 #define OBD_ALLOC(ptr, cast, size)                                      \
 123 do {                                                                    \
 124         if (size <= 4096) {                                             \
 125                 ptr = (cast)kmalloc((unsigned long) size, GFP_KERNEL); \
 126                 CDEBUG(D_MALLOC, "kmalloced: %x at %x.\n",              \
 127                        (int) size, (int) ptr);                          \
 128         } else {                                                        \
 129                 ptr = (cast)vmalloc((unsigned long) size);              \
 130                 CDEBUG(D_MALLOC, "vmalloced: %x at %x.\n",              \
 131                        (int) size, (int) ptr);                          \
 132         }                                                               \
 133         if (ptr == 0) {                                                 \
 134                 printk("kernel malloc returns 0 at %s:%d\n",            \
 135                        __FILE__, __LINE__);                             \
 136         }                                                               \
 137         memset(ptr, 0, size);                                           \
 138 } while (0)
 139
 140 #define OBD_FREE(ptr,size)                              \
 141 do {                                                    \
 142         if (size <= 4096) {                             \
 143                 kfree_s((ptr), (size));                 \
 144                 CDEBUG(D_MALLOC, "kfreed: %x at %x.\n", \
 145                        (int) size, (int) ptr);          \
 146         } else {                                        \
 147                 vfree((ptr));                           \
 148                 CDEBUG(D_MALLOC, "vfreed: %x at %x.\n", \
 149                        (int) size, (int) ptr);          \
 150         }                                               \
 151 } while (0)
 152
 153
 154
 155 #endif