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
  54
  55 #define OBD_ALLOC(ptr, cast, size)                                      \
  56 do {                                                                    \
  57         if (size <= 4096) {                                             \
  58                 ptr = (cast)kmalloc((unsigned long) size, GFP_KERNEL); \
  59                 CDEBUG(D_MALLOC, "kmalloced: %x at %x.\n",              \
  60                        (int) size, (int) ptr);                          \
  61         } else {                                                        \
  62                 ptr = (cast)vmalloc((unsigned long) size);              \
  63                 CDEBUG(D_MALLOC, "vmalloced: %x at %x.\n",              \
  64                        (int) size, (int) ptr);                          \
  65         }                                                               \
  66         if (ptr == 0) {                                                 \
  67                 printk("kernel malloc returns 0 at %s:%d\n",            \
  68                        __FILE__, __LINE__);                             \
  69         }                                                               \
  70         memset(ptr, 0, size);                                           \
  71 } while (0)
  72
  73 #define OBD_FREE(ptr,size)                              \
  74 do {                                                    \
  75         if (size <= 4096) {                             \
  76                 kfree_s((ptr), (size));                 \
  77                 CDEBUG(D_MALLOC, "kfreed: %x at %x.\n", \
  78                        (int) size, (int) ptr);          \
  79         } else {                                        \
  80                 vfree((ptr));                           \
  81                 CDEBUG(D_MALLOC, "vfreed: %x at %x.\n", \
  82                        (int) size, (int) ptr);          \
  83         }                                               \
  84 } while (0)
  85
  86 #endif