lustre/include/linux/obd_support.h

   1 #ifndef _OBD_SUPPORT
   2 #define _OBD_SUPPORT
   3 /*
   4  * Copyright (C) 2001  Cluster File Systems, Inc.
   5  *
   6  * This code is issued under the GNU General Public License.
   7  * See the file COPYING in this distribution
   8  */
   9
  10 #include <linux/autoconf.h>
  11 #include <linux/slab.h>
  12
  13 #define obd_unlock_page(page)                                           \
  14 do {                                                                    \
  15         if (PageLocked(page)) {                                         \
  16                 UnlockPage(page);                                       \
  17         } else {                                                        \
  18                 printk("file %s, line %d: expecting locked page\n",     \
  19                        __FILE__, __LINE__);                             \
  20         }                                                               \
  21 } while(0)
  22
  23 /*
  24  * Debug code
  25  */
  26 /* global variables */
  27 extern int obd_debug_level;
  28 extern int obd_print_entry;
  29 extern int obd_inodes;
  30 extern int obd_pages;
  31 extern long obd_memory;
  32
  33 #define EXT2_OBD_DEBUG
  34
  35 #ifdef EXT2_OBD_DEBUG
  36 #define CMD(cmd) (( cmd == READ ) ? "read" : "write")
  37
  38 /* debugging masks */
  39 #define D_PSDEV   0x001 /* debug information from psdev.c */
  40 #define D_INODE   0x002
  41 #define D_SUPER   0x004
  42 #define D_SNAP    0x008
  43 #define D_UNUSED4 0x010
  44 #define D_WARNING 0x020 /* misc warnings */
  45 #define D_EXT2    0x040 /* anything from ext2_debug */
  46 #define D_MALLOC  0x080 /* print malloc, free information */
  47 #define D_CACHE   0x100 /* cache-related items */
  48 #define D_INFO    0x200 /* general information, especially from interface.c */
  49 #define D_IOCTL   0x400 /* ioctl related information */
  50 #define D_BLOCKS  0x800 /* ext2 block allocation */
  51 #define D_NET    0x1000 /* network communications */
  52 #define D_PUNCH  0x2000
  53 #define D_BUFFS  0x4000 /* print network buffers */
  54
  55 #define CDEBUG(mask, format, a...)                                      \
  56         do {                                                            \
  57         if (obd_debug_level & mask) {                                   \
  58                 printk("(%s:%d):", __FUNCTION__, __LINE__);             \
  59                 printk(format, ## a); }                                 \
  60         } while (0)
  61
  62 #define ENTRY if (obd_print_entry)                                      \
  63         printk(KERN_INFO "Process %d entered %s\n", current->pid, __FUNCTION__)
  64
  65 #define EXIT if (obd_print_entry)                                       \
  66         printk(KERN_INFO "Process %d leaving %s [%d]\n", current->pid,  \
  67                __FUNCTION__, __LINE__)
  68
  69 /* Inode common information printed out (used by obdfs and ext2obd inodes) */
  70 #define ICDEBUG(inode) {                                                \
  71         CDEBUG(D_INFO,                                                  \
  72                "ino %ld, atm %ld, mtm %ld, ctm %ld, size %Ld, blocks %ld\n",\
  73                inode->i_ino, inode->i_atime, inode->i_mtime, inode->i_ctime,\
  74                inode->i_size, inode->i_blocks);                         \
  75         CDEBUG(D_INFO, "mode %o, uid %d, gid %d, nlnk %d, count %d\n",  \
  76                inode->i_mode, inode->i_uid, inode->i_gid, inode->i_nlink,\
  77                atomic_read(&inode->i_count));                                         \
  78 }
  79
  80 /* Ext2 inode information */
  81 #define EXDEBUG(inode) {                                                \
  82         ICDEBUG(inode);                                                 \
  83         CDEBUG(D_INFO, "ext2 blocks: %d %d %d %d %d %d %d %d\n",        \
  84                inode->u.ext2_i.i_data[0], inode->u.ext2_i.i_data[1],    \
  85                inode->u.ext2_i.i_data[2], inode->u.ext2_i.i_data[3],    \
  86                inode->u.ext2_i.i_data[4], inode->u.ext2_i.i_data[5],    \
  87                inode->u.ext2_i.i_data[6], inode->u.ext2_i.i_data[7]);   \
  88 }
  89
  90 /* OBDFS inode information */
  91 #define OIDEBUG(inode) {                                                \
  92         ICDEBUG(inode);                                                 \
  93         CDEBUG(D_INFO,"oinfo: flags 0x%08x\n", obdfs_i2info(inode)->oi_flags);\
  94         /* obdfs_print_plist(inode); */                                 \
  95 }
  96
  97 #define ODEBUG(obdo) {                                                  \
  98         CDEBUG(D_INFO, "id %ld, atm %ld, mtm %ld, ctm %ld, "            \
  99                "size %ld, blocks %ld\n",                                \
 100                (long)(obdo)->o_id, (long)(obdo)->o_atime,               \
 101                (long)(obdo)->o_mtime, (long)(obdo)->o_ctime,            \
 102                (long)(obdo)->o_size, (long)(obdo)->o_blocks);           \
 103         CDEBUG(D_INFO, " mode %o, uid %d, gid %d, flg 0x%0x, "          \
 104                "obdflg 0x%0x, nlnk %d, valid 0x%0x\n",                  \
 105                (obdo)->o_mode, (obdo)->o_uid, (obdo)->o_gid, (obdo)->o_flags,\
 106                (obdo)->o_obdflags, (obdo)->o_nlink, (obdo)->o_valid);   \
 107 }
 108
 109
 110 #define PDEBUG(page,msg) {                                              \
 111         if (page){                                                      \
 112                 char *uptodate = (Page_Uptodate(page)) ? "upto" : "outof";\
 113                 char *locked = (PageLocked(page)) ? "" : "un";          \
 114                 char *buffer = page->buffers ? "buffer" : "";           \
 115                 int count = page_count(page);                           \
 116                 long index = page->index;                               \
 117                 CDEBUG(D_CACHE, "%s: ** off %ld, %sdate, %slocked, flag %ld,"\
 118                        " cnt %d page 0x%p pages %ld virt %lx %s**\n",   \
 119                        msg, index, uptodate, locked, page->flags, count,\
 120                        page, page->mapping ? page->mapping->nrpages : -1,\
 121                        page->virtual, buffer);                          \
 122         } else                                                          \
 123                 CDEBUG(D_CACHE, "** %s: no page\n", msg);               \
 124 }
 125
 126 #if 0
 127 #define iget(sb, ino) obd_iget(sb, ino)
 128 #define iput(sb, ino) obd_iput(sb, ino)
 129
 130 static inline struct inode *obd_iget(struct super_block *sb, unsigned long ino)
 131 {
 132         struct inode *inode;
 133
 134         if ((inode = iget(sb, ino)) == NULL)
 135                 CDEBUG(D_INODE, "NULL in iget for %ld\n", ino);
 136         else
 137                 obd_inodes++;
 138         return inode;
 139 }
 140
 141 static inline void obd_iput(struct inode *inode)
 142 {
 143         if (inode == NULL)
 144                 CDEBUG(D_INODE, "NULL in iput\n");
 145         else
 146                 obd_inodes--;
 147 }
 148 #endif
 149
 150 #else /* EXT2_OBD_DEBUG */
 151
 152 #define CDEBUG(mask, format, a...) {}
 153 #define ENTRY {}
 154 #define EXIT {}
 155 #define ODEBUG(obdo) {}
 156 #define EXDEBUG(inode) {}
 157 #define OIDEBUG(inode) {}
 158 #define PDEBUG(page, cmd) {}
 159
 160 #endif /* EXT2_OBD_DEBUG */
 161
 162 #define OBD_ALLOC(ptr, size)                                    \
 163 do {                                                            \
 164         (ptr) = kmalloc((unsigned long)(size), GFP_KERNEL);     \
 165         obd_memory += (size);                                   \
 166         CDEBUG(D_MALLOC, "kmalloced: %ld at %x (tot %ld).\n",   \
 167                (long)(size), (int)(ptr), obd_memory);           \
 168         if (ptr == NULL) {                                      \
 169                 printk("kernel malloc failed at %s:%d\n",       \
 170                        __FILE__, __LINE__);                     \
 171         } else {                                                \
 172                 memset((ptr), 0, (size));                       \
 173         }                                                       \
 174 } while (0)
 175
 176 #define OBD_FREE(ptr, size)                                  \
 177 do {                                                         \
 178         kfree((ptr));                                        \
 179         obd_memory -= (size);                                \
 180         CDEBUG(D_MALLOC, "kfreed: %d at %x (tot %ld).\n",    \
 181                (int)(size), (int)(ptr), obd_memory);         \
 182 } while (0)
 183
 184 #endif