root/include/linux/ceph/ceph_debug.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _FS_CEPH_DEBUG_H
   3 #define _FS_CEPH_DEBUG_H
   4 
   5 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
   6 
   7 #include <linux/string.h>
   8 
   9 #ifdef CONFIG_CEPH_LIB_PRETTYDEBUG
  10 
  11 /*
  12  * wrap pr_debug to include a filename:lineno prefix on each line.
  13  * this incurs some overhead (kernel size and execution time) due to
  14  * the extra function call at each call site.
  15  */
  16 
  17 # if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG)
  18 #  define dout(fmt, ...)                                                \
  19         pr_debug("%.*s %12.12s:%-4d : " fmt,                            \
  20                  8 - (int)sizeof(KBUILD_MODNAME), "    ",               \
  21                  kbasename(__FILE__), __LINE__, ##__VA_ARGS__)
  22 # else
  23 /* faux printk call just to see any compiler warnings. */
  24 #  define dout(fmt, ...)        do {                            \
  25                 if (0)                                          \
  26                         printk(KERN_DEBUG fmt, ##__VA_ARGS__);  \
  27         } while (0)
  28 # endif
  29 
  30 #else
  31 
  32 /*
  33  * or, just wrap pr_debug
  34  */
  35 # define dout(fmt, ...) pr_debug(" " fmt, ##__VA_ARGS__)
  36 
  37 #endif
  38 
  39 #endif