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 extern int obd_inodes;
  16 extern int obd_pages;
  17 extern long obd_memory;
  18
  19 #define EXT2_OBD_DEBUG
  20
  21 #ifdef EXT2_OBD_DEBUG
  22 #define CMD(cmd) (( cmd == READ ) ? "read" : "write")
  23
  24 /* debugging masks */
  25 #define D_PSDEV   0x001 /* debug information from psdev.c */
  26 #define D_INODE   0x002
  27 #define D_SUPER   0x004
  28 #define D_SNAP    0x008
  29 #define D_UNUSED4 0x010
  30 #define D_WARNING 0x020 /* misc warnings */
  31 #define D_EXT2    0x040 /* anything from ext2_debug */
  32 #define D_MALLOC  0x080 /* print malloc, free information */
  33 #define D_CACHE   0x100 /* cache-related items */
  34 #define D_INFO    0x200 /* general information, especially from interface.c */
  35 #define D_IOCTL   0x400 /* ioctl related information */
  36 #define D_BLOCKS  0x800 /* ext2 block allocation */
  37 #define D_RPC    0x1000 /* rpc communications */
  38 #define D_PUNCH  0x2000
  39
  40 #define CDEBUG(mask, format, a...)                                      \
  41         do {                                                            \
  42         if (obd_debug_level & mask) {                                   \
  43                 printk("(%s:%d):", __FUNCTION__, __LINE__);             \
  44                 printk(format, ## a); }                                 \
  45         } while (0)
  46
  47 #define ENTRY if (obd_print_entry)                                      \
  48         printk(KERN_INFO "Process %d entered %s\n", current->pid, __FUNCTION__)
  49
  50 #define EXIT if (obd_print_entry)                                       \
  51         printk(KERN_INFO "Process %d leaving %s [%d]\n", current->pid,  \
  52                __FUNCTION__, __LINE__)
  53
  54 /* Inode common information printed out (used by obdfs and ext2obd inodes) */
  55 #define ICDEBUG(inode) {                                                \
  56         CDEBUG(D_INFO,                                                  \
  57                "ino %ld, atm %ld, mtm %ld, ctm %ld, size %Ld, blocks %ld\n",\
  58                inode->i_ino, inode->i_atime, inode->i_mtime, inode->i_ctime,\
  59                inode->i_size, inode->i_blocks);                         \
  60         CDEBUG(D_INFO, "mode %o, uid %d, gid %d, nlnk %d, count %d\n",  \
  61                inode->i_mode, inode->i_uid, inode->i_gid, inode->i_nlink,\
  62                atomic_read(&inode->i_count));                                         \
  63 }
  64
  65 /* Ext2 inode information */
  66 #define EXDEBUG(inode) {                                                \
  67         ICDEBUG(inode);                                                 \
  68         CDEBUG(D_INFO, "ext2 blocks: %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 }
  74
  75 /* OBDFS inode information */
  76 #define OIDEBUG(inode) {                                                \
  77         ICDEBUG(inode);                                                 \
  78         CDEBUG(D_INFO,"oinfo: flags 0x%08x\n", obdfs_i2info(inode)->oi_flags);\
  79         /* obdfs_print_plist(inode); */                                 \
  80 }
  81
  82 #define ODEBUG(obdo) {                                                  \
  83         CDEBUG(D_INFO, "id %ld, atm %ld, mtm %ld, ctm %ld, "            \
  84                "size %ld, blocks %ld\n",                                \
  85                (long)(obdo)->o_id, (long)(obdo)->o_atime,               \
  86                (long)(obdo)->o_mtime, (long)(obdo)->o_ctime,            \
  87                (long)(obdo)->o_size, (long)(obdo)->o_blocks);           \
  88         CDEBUG(D_INFO, " mode %o, uid %d, gid %d, flg 0x%0x, "          \
  89                "obdflg 0x%0x, nlnk %d, valid 0x%0x\n",                  \
  90                (obdo)->o_mode, (obdo)->o_uid, (obdo)->o_gid, (obdo)->o_flags,\
  91                (obdo)->o_obdflags, (obdo)->o_nlink, (obdo)->o_valid);   \
  92 }
  93
  94
  95 #define PDEBUG(page,msg) {                                              \
  96         if (page){                                                      \
  97                 char *uptodate = (Page_Uptodate(page)) ? "upto" : "outof";\
  98                 char *locked = (PageLocked(page)) ? "" : "un";          \
  99                 char *buffer = page->buffers ? "buffer" : "";           \
 100                 int count = page_count(page);                           \
 101                 long index = page->index;                               \
 102                 CDEBUG(D_CACHE, "%s: ** off %ld, %sdate, %slocked, flag %ld,"\
 103                        " cnt %d page 0x%p pages %ld virt %lx %s**\n",   \
 104                        msg, index, uptodate, locked, page->flags, count,\
 105                        page, page->mapping ? page->mapping->nrpages : -1,\
 106                        page->virtual, buffer);                          \
 107         } else                                                          \
 108                 CDEBUG(D_CACHE, "** %s: no page\n", msg);               \
 109 }
 110
 111 #if 0
 112 #define iget(sb, ino) obd_iget(sb, ino)
 113 #define iput(sb, ino) obd_iput(sb, ino)
 114
 115 static inline struct inode *obd_iget(struct super_block *sb, unsigned long ino)
 116 {
 117         struct inode *inode;
 118
 119         if ((inode = iget(sb, ino)) == NULL)
 120                 CDEBUG(D_INODE, "NULL in iget for %ld\n", ino);
 121         else
 122                 obd_inodes++;
 123         return inode;
 124 }
 125
 126 static inline void obd_iput(struct inode *inode)
 127 {
 128         if (inode == NULL)
 129                 CDEBUG(D_INODE, "NULL in iput\n");
 130         else
 131                 obd_inodes--;
 132 }
 133 #endif
 134
 135 #else /* EXT2_OBD_DEBUG */
 136
 137 #define CDEBUG(mask, format, a...) {}
 138 #define ENTRY {}
 139 #define EXIT {}
 140 #define ODEBUG(obdo) {}
 141 #define EXDEBUG(inode) {}
 142 #define OIDEBUG(inode) {}
 143 #define PDEBUG(page, cmd) {}
 144
 145 #endif /* EXT2_OBD_DEBUG */
 146
 147
 148
 149 #define OBD_ALLOC(ptr, cast, size)                                      \
 150 do {                                                                    \
 151         if (size <= 4096) {                                             \
 152                 ptr = (cast)kmalloc((unsigned long) size, GFP_KERNEL);  \
 153                 CDEBUG(D_MALLOC, "kmalloced: %d at %x.\n",              \
 154                        (int) size, (int) ptr);                          \
 155         } else {                                                        \
 156                 ptr = (cast)vmalloc((unsigned long) size);              \
 157                 CDEBUG(D_MALLOC, "vmalloced: %d at %x.\n",              \
 158                        (int) size, (int) ptr);                          \
 159         }                                                               \
 160         if (ptr == 0) {                                                 \
 161                 printk("kernel malloc returns 0 at %s:%d\n",            \
 162                        __FILE__, __LINE__);                             \
 163         } else {                                                        \
 164                 memset(ptr, 0, size);                                   \
 165                 obd_memory += size;                                     \
 166         }                                                               \
 167 } while (0)
 168
 169 #define OBD_FREE(ptr,size)                              \
 170 do {                                                    \
 171         if (size <= 4096) {                             \
 172                 kfree((ptr));                   \
 173                 CDEBUG(D_MALLOC, "kfreed: %d at %x.\n", \
 174                        (int) size, (int) ptr);          \
 175         } else {                                        \
 176                 vfree((ptr));                           \
 177                 CDEBUG(D_MALLOC, "vfreed: %d at %x.\n", \
 178                        (int) size, (int) ptr);          \
 179         }                                               \
 180         obd_memory -= size;                             \
 181 } while (0)
 182
 183
 184
 185 #endif