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  * Debug code
  10  */
  11 /* global variables */
  12 extern int obd_debug_level;
  13 extern int obd_print_entry;
  14
  15 /* debugging masks */
  16 #define D_PSDEV       1 /* debug information from psdev.c */
  17 #define D_INODE       2
  18 #define D_UNUSED2     4
  19 #define D_UNUSED3     8
  20 #define D_UNUSED4    16
  21 #define D_WARNING    32 /* misc warnings */
  22 #define D_EXT2       64 /* anything from ext2_debug */
  23 #define D_MALLOC    128 /* print malloc, free information */
  24 #define D_CACHE     256 /* cache-related items */
  25 #define D_INFO      512 /* general information, especially from interface.c */
  26 #define D_IOCTL    1024 /* ioctl related information */
  27 #define D_BLOCKS   2048 /* ext2 block allocation */
  28
  29 #ifdef SIM_OBD_DEBUG
  30 #define CDEBUG(mask, format, a...)                                      \
  31         do {                                                            \
  32         if (obd_debug_level & mask) {                                   \
  33                 printk("(%s,l. %d): ",  __FUNCTION__, __LINE__);        \
  34                 printk(format, ## a); }                                 \
  35         } while (0)
  36
  37 #define ENTRY                                                                 \
  38         if (obd_print_entry)                                                  \
  39                 printk("Process %d entered %s\n", current->pid, __FUNCTION__)
  40
  41 #define EXIT                                                                  \
  42         if (obd_print_entry)                                                  \
  43                 printk("Process %d leaving %s\n", current->pid, __FUNCTION__)
  44
  45 #else /* SIM_OBD_DEBUG */
  46
  47 #       define CDEBUG ;
  48 #       define ENTRY ;
  49 #       define EXIT ;
  50
  51 #endif /* SIM_OBD_DEBUG */
  52
  53 #define PDEBUG(page,cmd)        {\
  54                 char *command = ( cmd == READ ) ? "read" : "write";\
  55                 char *uptodate = (Page_Uptodate(page)) ? "yes" : "no";\
  56                 char *locked = (PageLocked(page)) ? "yes" : "no";\
  57                 int count = page->count.counter;\
  58                 long ino = (page->inode) ? page->inode->i_ino : -1;\
  59                 \
  60                 CDEBUG(D_IOCTL, " ** %s, cmd: %s, ino: %ld, uptodate: %s, "\
  61                        "locked: %s, cnt %d ** \n", __FUNCTION__,\
  62                        command, ino, uptodate, locked, count);\
  63         }
  64
  65
  66 #define OBD_ALLOC(ptr, cast, size)                                      \
  67 do {                                                                    \
  68         if (size <= 4096) {                                             \
  69                 ptr = (cast)kmalloc((unsigned long) size, GFP_KERNEL); \
  70                 CDEBUG(D_MALLOC, "kmalloced: %x at %x.\n",              \
  71                        (int) size, (int) ptr);                          \
  72         } else {                                                        \
  73                 ptr = (cast)vmalloc((unsigned long) size);              \
  74                 CDEBUG(D_MALLOC, "vmalloced: %x at %x.\n",              \
  75                        (int) size, (int) ptr);                          \
  76         }                                                               \
  77         if (ptr == 0) {                                                 \
  78                 printk("kernel malloc returns 0 at %s:%d\n",            \
  79                        __FILE__, __LINE__);                             \
  80         }                                                               \
  81         memset(ptr, 0, size);                                           \
  82 } while (0)
  83
  84 #define OBD_FREE(ptr,size)                              \
  85 do {                                                    \
  86         if (size <= 4096) {                             \
  87                 kfree_s((ptr), (size));                 \
  88                 CDEBUG(D_MALLOC, "kfreed: %x at %x.\n", \
  89                        (int) size, (int) ptr);          \
  90         } else {                                        \
  91                 vfree((ptr));                           \
  92                 CDEBUG(D_MALLOC, "vfreed: %x at %x.\n", \
  93                        (int) size, (int) ptr);          \
  94         }                                               \
  95 } while (0)
  96
  97 #endif