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 SIM_OBD_DEBUG
   7
   8
   9 #define MIN(a,b) (((a)<(b)) ? (a): (b))
  10 #define MAX(a,b) (((a)>(b)) ? (a): (b))
  11
  12 /*
  13  * Debug code
  14  */
  15 /* global variables */
  16 extern int obd_debug_level;
  17 extern int obd_print_entry;
  18
  19 /* debugging masks */
  20 #define D_PSDEV       1 /* debug information from psdev.c */
  21 #define D_INODE       2
  22 #define D_UNUSED2     4
  23 #define D_UNUSED3     8
  24 #define D_UNUSED4    16
  25 #define D_WARNING    32 /* misc warnings */
  26 #define D_EXT2       64 /* anything from ext2_debug */
  27 #define D_MALLOC    128 /* print malloc, free information */
  28 #define D_CACHE     256 /* cache-related items */
  29 #define D_INFO      512 /* general information, especially from interface.c */
  30 #define D_IOCTL    1024 /* ioctl related information */
  31 #define D_BLOCKS   2048 /* ext2 block allocation */
  32
  33 #ifdef SIM_OBD_DEBUG
  34 #define CDEBUG(mask, format, a...)                                      \
  35         do {                                                            \
  36         if (obd_debug_level & mask) {                                   \
  37                 printk("(%s,l. %d): ",  __FUNCTION__, __LINE__);        \
  38                 printk(format, ## a); }                                 \
  39         } while (0)
  40
  41 #define ENTRY                                                                 \
  42         if (obd_print_entry)                                                  \
  43                 printk("Process %d entered %s\n", current->pid, __FUNCTION__)
  44
  45 #define EXIT                                                                  \
  46         if (obd_print_entry)                                                  \
  47                 printk("Process %d leaving %s\n", current->pid, __FUNCTION__)
  48
  49 #else /* SIM_OBD_DEBUG */
  50
  51 #       define CDEBUG ;
  52 #       define ENTRY ;
  53 #       define EXIT ;
  54
  55 #endif /* SIM_OBD_DEBUG */
  56
  57
  58 #define CMD(cmd) (( cmd == READ ) ? "read" : "write")
  59
  60 #define PDEBUG(page,cmd)        {if (page){\
  61                 char *uptodate = (Page_Uptodate(page)) ? "yes" : "no";\
  62                 char *locked = (PageLocked(page)) ? "yes" : "no";\
  63                 int count = page->count.counter;\
  64                 long ino = (page->inode) ? page->inode->i_ino : -1;\
  65                 long offset = page->offset / PAGE_SIZE;\
  66                 \
  67                 CDEBUG(D_IOCTL, " ** %s, cmd: %s, ino: %ld, off %ld, uptodate: %s, "\
  68                        "locked: %s, cnt %d page %p ** \n", __FUNCTION__,\
  69                        cmd, ino, offset, uptodate, locked, count, page);\
  70         } else { CDEBUG(D_IOCTL, "** %s, no page\n", __FUNCTION__); }}
  71
  72
  73 #define OBD_ALLOC(ptr, cast, size)                                      \
  74 do {                                                                    \
  75         if (size <= 4096) {                                             \
  76                 ptr = (cast)kmalloc((unsigned long) size, GFP_KERNEL); \
  77                 CDEBUG(D_MALLOC, "kmalloced: %x at %x.\n",              \
  78                        (int) size, (int) ptr);                          \
  79         } else {                                                        \
  80                 ptr = (cast)vmalloc((unsigned long) size);              \
  81                 CDEBUG(D_MALLOC, "vmalloced: %x at %x.\n",              \
  82                        (int) size, (int) ptr);                          \
  83         }                                                               \
  84         if (ptr == 0) {                                                 \
  85                 printk("kernel malloc returns 0 at %s:%d\n",            \
  86                        __FILE__, __LINE__);                             \
  87         }                                                               \
  88         memset(ptr, 0, size);                                           \
  89 } while (0)
  90
  91 #define OBD_FREE(ptr,size)                              \
  92 do {                                                    \
  93         if (size <= 4096) {                             \
  94                 kfree_s((ptr), (size));                 \
  95                 CDEBUG(D_MALLOC, "kfreed: %x at %x.\n", \
  96                        (int) size, (int) ptr);          \
  97         } else {                                        \
  98                 vfree((ptr));                           \
  99                 CDEBUG(D_MALLOC, "vfreed: %x at %x.\n", \
 100                        (int) size, (int) ptr);          \
 101         }                                               \
 102 } while (0)
 103
 104
 105
 106 static inline void inode_to_iattr(struct inode *inode, struct iattr *tmp)
 107 {
 108         tmp->ia_mode = inode->i_mode;
 109         tmp->ia_uid = inode->i_uid;
 110         tmp->ia_gid = inode->i_gid;
 111         tmp->ia_size = inode->i_size;
 112         tmp->ia_atime = inode->i_atime;
 113         tmp->ia_mtime = inode->i_mtime;
 114         tmp->ia_ctime = inode->i_ctime;
 115         tmp->ia_attr_flags = inode->i_flags;
 116
 117         tmp->ia_valid = ~0;
 118 }
 119
 120 static inline void inode_cpy(struct inode *dest, struct inode *src)
 121 {
 122         dest->i_mode = src->i_mode;
 123         dest->i_uid = src->i_uid;
 124         dest->i_gid = src->i_gid;
 125         dest->i_size = src->i_size;
 126         dest->i_atime = src->i_atime;
 127         dest->i_mtime = src->i_mtime;
 128         dest->i_ctime = src->i_ctime;
 129         dest->i_attr_flags = src->i_flags;
 130         /* allocation of space */
 131         dest->i_blocks = src->i_blocks;
 132
 133         if ( !dest->i_blocks)
 134                 memcpy(&dest->u, &src->u, sizeof(src->u));
 135 }
 136
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 145
 146 #endif