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 #include <linux/vmalloc.h>
  13
  14
  15
  16 #define obd_unlock_page(page)   do {    if (PageLocked(page)) { \
  17                         UnlockPage(page);\
  18                 } else {\
  19                         printk("file %s, line %d: expecting locked page\n",\
  20                                __FILE__, __LINE__); \
  21                 }                       \
  22 } while(0)
  23
  24 /*
  25  * Debug code
  26  */
  27 /* global variables */
  28 extern int obd_debug_level;
  29 extern int obd_print_entry;
  30 extern int obd_inodes;
  31 extern int obd_pages;
  32 extern long obd_memory;
  33
  34 #define EXT2_OBD_DEBUG
  35
  36 #ifdef EXT2_OBD_DEBUG
  37 #define CMD(cmd) (( cmd == READ ) ? "read" : "write")
  38
  39 /* debugging masks */
  40 #define D_PSDEV   0x001 /* debug information from psdev.c */
  41 #define D_INODE   0x002
  42 #define D_SUPER   0x004
  43 #define D_SNAP    0x008
  44 #define D_UNUSED4 0x010
  45 #define D_WARNING 0x020 /* misc warnings */
  46 #define D_EXT2    0x040 /* anything from ext2_debug */
  47 #define D_MALLOC  0x080 /* print malloc, free information */
  48 #define D_CACHE   0x100 /* cache-related items */
  49 #define D_INFO    0x200 /* general information, especially from interface.c */
  50 #define D_IOCTL   0x400 /* ioctl related information */
  51 #define D_BLOCKS  0x800 /* ext2 block allocation */
  52 #define D_NET    0x1000 /* network communications */
  53 #define D_PUNCH  0x2000
  54 #define D_BUFFS  0x4000 /* print network buffers */
  55
  56 #define CDEBUG(mask, format, a...)                                      \
  57         do {                                                            \
  58         if (obd_debug_level & mask) {                                   \
  59                 printk("(%s:%d):", __FUNCTION__, __LINE__);             \
  60                 printk(format, ## a); }                                 \
  61         } while (0)
  62
  63 #define ENTRY if (obd_print_entry)                                      \
  64         printk(KERN_INFO "Process %d entered %s\n", current->pid, __FUNCTION__)
  65
  66 #define EXIT if (obd_print_entry)                                       \
  67         printk(KERN_INFO "Process %d leaving %s [%d]\n", current->pid,  \
  68                __FUNCTION__, __LINE__)
  69
  70 /* Inode common information printed out (used by obdfs and ext2obd inodes) */
  71 #define ICDEBUG(inode) {                                                \
  72         CDEBUG(D_INFO,                                                  \
  73                "ino %ld, atm %ld, mtm %ld, ctm %ld, size %Ld, blocks %ld\n",\
  74                inode->i_ino, inode->i_atime, inode->i_mtime, inode->i_ctime,\
  75                inode->i_size, inode->i_blocks);                         \
  76         CDEBUG(D_INFO, "mode %o, uid %d, gid %d, nlnk %d, count %d\n",  \
  77                inode->i_mode, inode->i_uid, inode->i_gid, inode->i_nlink,\
  78                atomic_read(&inode->i_count));                                         \
  79 }
  80
  81 /* Ext2 inode information */
  82 #define EXDEBUG(inode) {                                                \
  83         ICDEBUG(inode);                                                 \
  84         CDEBUG(D_INFO, "ext2 blocks: %d %d %d %d %d %d %d %d\n",        \
  85                inode->u.ext2_i.i_data[0], inode->u.ext2_i.i_data[1],    \
  86                inode->u.ext2_i.i_data[2], inode->u.ext2_i.i_data[3],    \
  87                inode->u.ext2_i.i_data[4], inode->u.ext2_i.i_data[5],    \
  88                inode->u.ext2_i.i_data[6], inode->u.ext2_i.i_data[7]);   \
  89 }
  90
  91 /* OBDFS inode information */
  92 #define OIDEBUG(inode) {                                                \
  93         ICDEBUG(inode);                                                 \
  94         CDEBUG(D_INFO,"oinfo: flags 0x%08x\n", obdfs_i2info(inode)->oi_flags);\
  95         /* obdfs_print_plist(inode); */                                 \
  96 }
  97
  98 #define ODEBUG(obdo) {                                                  \
  99         CDEBUG(D_INFO, "id %ld, atm %ld, mtm %ld, ctm %ld, "            \
 100                "size %ld, blocks %ld\n",                                \
 101                (long)(obdo)->o_id, (long)(obdo)->o_atime,               \
 102                (long)(obdo)->o_mtime, (long)(obdo)->o_ctime,            \
 103                (long)(obdo)->o_size, (long)(obdo)->o_blocks);           \
 104         CDEBUG(D_INFO, " mode %o, uid %d, gid %d, flg 0x%0x, "          \
 105                "obdflg 0x%0x, nlnk %d, valid 0x%0x\n",                  \
 106                (obdo)->o_mode, (obdo)->o_uid, (obdo)->o_gid, (obdo)->o_flags,\
 107                (obdo)->o_obdflags, (obdo)->o_nlink, (obdo)->o_valid);   \
 108 }
 109
 110
 111 #define PDEBUG(page,msg) {                                              \
 112         if (page){                                                      \
 113                 char *uptodate = (Page_Uptodate(page)) ? "upto" : "outof";\
 114                 char *locked = (PageLocked(page)) ? "" : "un";          \
 115                 char *buffer = page->buffers ? "buffer" : "";           \
 116                 int count = page_count(page);                           \
 117                 long index = page->index;                               \
 118                 CDEBUG(D_CACHE, "%s: ** off %ld, %sdate, %slocked, flag %ld,"\
 119                        " cnt %d page 0x%p pages %ld virt %lx %s**\n",   \
 120                        msg, index, uptodate, locked, page->flags, count,\
 121                        page, page->mapping ? page->mapping->nrpages : -1,\
 122                        page->virtual, buffer);                          \
 123         } else                                                          \
 124                 CDEBUG(D_CACHE, "** %s: no page\n", msg);               \
 125 }
 126
 127 #if 0
 128 #define iget(sb, ino) obd_iget(sb, ino)
 129 #define iput(sb, ino) obd_iput(sb, ino)
 130
 131 static inline struct inode *obd_iget(struct super_block *sb, unsigned long ino)
 132 {
 133         struct inode *inode;
 134
 135         if ((inode = iget(sb, ino)) == NULL)
 136                 CDEBUG(D_INODE, "NULL in iget for %ld\n", ino);
 137         else
 138                 obd_inodes++;
 139         return inode;
 140 }
 141
 142 static inline void obd_iput(struct inode *inode)
 143 {
 144         if (inode == NULL)
 145                 CDEBUG(D_INODE, "NULL in iput\n");
 146         else
 147                 obd_inodes--;
 148 }
 149 #endif
 150
 151 #else /* EXT2_OBD_DEBUG */
 152
 153 #define CDEBUG(mask, format, a...) {}
 154 #define ENTRY {}
 155 #define EXIT {}
 156 #define ODEBUG(obdo) {}
 157 #define EXDEBUG(inode) {}
 158 #define OIDEBUG(inode) {}
 159 #define PDEBUG(page, cmd) {}
 160
 161 #endif /* EXT2_OBD_DEBUG */
 162
 163
 164
 165 #define OBD_ALLOC(ptr, cast, size)                                      \
 166 do {                                                                    \
 167         ptr = kmalloc((unsigned long) size, GFP_KERNEL);        \
 168         obd_memory += size;                                             \
 169         CDEBUG(D_MALLOC, "kmalloced: %d at %x (tot %ld).\n",            \
 170                        (int) size, (int) ptr, obd_memory);             \
 171         if (ptr == 0) {                                                 \
 172                 printk("kernel malloc returns 0 at %s:%d\n",            \
 173                        __FILE__, __LINE__);                             \
 174         } else {                                                        \
 175                 memset(ptr, 0, size);                                   \
 176         }                                                               \
 177 } while (0)
 178
 179 #define OBD_FREE(ptr,size)                                   \
 180 do {                                                         \
 181         kfree((ptr));                                        \
 182         obd_memory -= size;                                  \
 183         CDEBUG(D_MALLOC, "kfreed: %d at %x (tot %ld).\n",    \
 184                (int) size, (int) ptr, obd_memory);           \
 185 } while (0)
 186
 187
 188
 189 #endif
 190