lustre/include/linux/obd_support.h

   1
   2 #ifndef _OBD_SUPPORT
   3 #define _OBD_SUPPORT
   4 #include <linux/malloc.h>
   5 #include <linux/vmalloc.h>
   6
   7 #define SIM_OBD_DEBUG
   8
   9
  10 #define MIN(a,b) (((a)<(b)) ? (a): (b))
  11 #define MAX(a,b) (((a)>(b)) ? (a): (b))
  12
  13 /*
  14  * Debug code
  15  */
  16 /* global variables */
  17 extern int obd_debug_level;
  18 extern int obd_print_entry;
  19
  20 /* debugging masks */
  21 #define D_PSDEV       1 /* debug information from psdev.c */
  22 #define D_INODE       2
  23 #define D_UNUSED2     4
  24 #define D_UNUSED3     8
  25 #define D_UNUSED4    16
  26 #define D_WARNING    32 /* misc warnings */
  27 #define D_EXT2       64 /* anything from ext2_debug */
  28 #define D_MALLOC    128 /* print malloc, free information */
  29 #define D_CACHE     256 /* cache-related items */
  30 #define D_INFO      512 /* general information, especially from interface.c */
  31 #define D_IOCTL    1024 /* ioctl related information */
  32 #define D_BLOCKS   2048 /* ext2 block allocation */
  33
  34 #ifdef SIM_OBD_DEBUG
  35 #define CDEBUG(mask, format, a...)                                      \
  36         do {                                                            \
  37         if (obd_debug_level & mask) {                                   \
  38                 printk("(%s,l. %d): ",  __FUNCTION__, __LINE__);        \
  39                 printk(format, ## a); }                                 \
  40         } while (0)
  41
  42 #define ENTRY                                                                 \
  43         if (obd_print_entry)                                                  \
  44                 printk("Process %d entered %s\n", current->pid, __FUNCTION__)
  45
  46 #define EXIT                                                                  \
  47         if (obd_print_entry)                                                  \
  48                 printk("Process %d leaving %s [%d]\n", current->pid, __FUNCTION__, __LINE__)
  49
  50 #else /* SIM_OBD_DEBUG */
  51
  52 #       define CDEBUG ;
  53 #       define ENTRY ;
  54 #       define EXIT ;
  55
  56 #endif /* SIM_OBD_DEBUG */
  57
  58
  59 #define CMD(cmd) (( cmd == READ ) ? "read" : "write")
  60
  61 #define IDEBUG(inode) { \
  62         if ( !list_empty(&inode->i_data.pages) || inode->i_data.nrpages ) {\
  63                 struct page * page;\
  64                 printk("XXXXX: func %s line %d ino %ld list not empty, pages %ld\n", __FUNCTION__ , __LINE__,\
  65                        inode->i_ino, inode->i_data.nrpages);\
  66                 page = list_entry(inode->i_data.pages.next, struct page , list);\
  67                 PDEBUG(page, "READ INODE");\
  68         }}
  69
  70
  71 #define PDEBUG(page,cmd)        {if (page){\
  72                 char *uptodate = (Page_Uptodate(page)) ? "yes" : "no";\
  73                 char *locked = (PageLocked(page)) ? "yes" : "no";\
  74                 int count = page->count.counter;\
  75                 long offset = page->offset;\
  76                 \
  77                 CDEBUG(D_IOCTL, " ** %s, cmd: %s, off %ld, uptodate: %s, "\
  78                        "locked: %s, cnt %d page %p pages %ld** \n", __FUNCTION__,\
  79                        cmd, offset, uptodate, locked, count, page, page->mapping->nrpages);\
  80         } else { CDEBUG(D_IOCTL, "** %s, no page\n", __FUNCTION__); }}
  81
  82
  83 #define OBD_ALLOC(ptr, cast, size)                                      \
  84 do {                                                                    \
  85         if (size <= 4096) {                                             \
  86                 ptr = (cast)kmalloc((unsigned long) size, GFP_KERNEL); \
  87                 CDEBUG(D_MALLOC, "kmalloced: %x at %x.\n",              \
  88                        (int) size, (int) ptr);                          \
  89         } else {                                                        \
  90                 ptr = (cast)vmalloc((unsigned long) size);              \
  91                 CDEBUG(D_MALLOC, "vmalloced: %x at %x.\n",              \
  92                        (int) size, (int) ptr);                          \
  93         }                                                               \
  94         if (ptr == 0) {                                                 \
  95                 printk("kernel malloc returns 0 at %s:%d\n",            \
  96                        __FILE__, __LINE__);                             \
  97         }                                                               \
  98         memset(ptr, 0, size);                                           \
  99 } while (0)
 100
 101 #define OBD_FREE(ptr,size)                              \
 102 do {                                                    \
 103         if (size <= 4096) {                             \
 104                 kfree_s((ptr), (size));                 \
 105                 CDEBUG(D_MALLOC, "kfreed: %x at %x.\n", \
 106                        (int) size, (int) ptr);          \
 107         } else {                                        \
 108                 vfree((ptr));                           \
 109                 CDEBUG(D_MALLOC, "vfreed: %x at %x.\n", \
 110                        (int) size, (int) ptr);          \
 111         }                                               \
 112 } while (0)
 113
 114
 115
 116 static inline void inode_to_iattr(struct inode *inode, struct iattr *tmp)
 117 {
 118         tmp->ia_mode = inode->i_mode;
 119         tmp->ia_uid = inode->i_uid;
 120         tmp->ia_gid = inode->i_gid;
 121         tmp->ia_size = inode->i_size;
 122         tmp->ia_atime = inode->i_atime;
 123         tmp->ia_mtime = inode->i_mtime;
 124         tmp->ia_ctime = inode->i_ctime;
 125         /*      tmp->ia_flags = inode->i_flags; */
 126
 127         tmp->ia_valid = ~0;
 128 }
 129
 130 static inline void inode_cpy(struct inode *dest, struct inode *src)
 131 {
 132         dest->i_mode = src->i_mode;
 133         dest->i_uid = src->i_uid;
 134         dest->i_gid = src->i_gid;
 135         dest->i_size = src->i_size;
 136         dest->i_atime = src->i_atime;
 137         dest->i_mtime = src->i_mtime;
 138         dest->i_ctime = src->i_ctime;
 139         dest->i_flags = src->i_flags;
 140         /* allocation of space */
 141         dest->i_blocks = src->i_blocks;
 142
 143         if ( !dest->i_blocks)
 144                 memcpy(&dest->u, &src->u, sizeof(src->u));
 145 }
 146
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 155
 156 #endif