LXR linux/include/linux/ceph/ceph

   1#ifndef _FS_CEPH_DEBUG_H
   2#define _FS_CEPH_DEBUG_H
   3
   4#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
   5
   6#ifdef CONFIG_CEPH_LIB_PRETTYDEBUG
   7
   8/*
   9 * wrap pr_debug to include a filename:lineno prefix on each line.
  10 * this incurs some overhead (kernel size and execution time) due to
  11 * the extra function call at each call site.
  12 */
  13
  14# if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG)
  15extern const char *ceph_file_part(const char *s, int len);
  16#  define dout(fmt, ...)                                                \
  17        pr_debug("%.*s %12.12s:%-4d : " fmt,                            \
  18                 8 - (int)sizeof(KBUILD_MODNAME), "    ",               \
  19                 ceph_file_part(__FILE__, sizeof(__FILE__)),            \
  20                 __LINE__, ##__VA_ARGS__)
  21# else
  22/* faux printk call just to see any compiler warnings. */
  23#  define dout(fmt, ...)        do {                            \
  24                if (0)                                          \
  25                        printk(KERN_DEBUG fmt, ##__VA_ARGS__);  \
  26        } while (0)
  27# endif
  28
  29#else
  30
  31/*
  32 * or, just wrap pr_debug
  33 */
  34# define dout(fmt, ...) pr_debug(" " fmt, ##__VA_ARGS__)
  35
  36#endif
  37
  38#endif
  39