~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/include/linux/dynamic_debug.h

Version: ~ [ linux-5.4-rc7 ] ~ [ linux-5.3.10 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.83 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.153 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.200 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.200 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.76 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 #ifndef _DYNAMIC_DEBUG_H
  2 #define _DYNAMIC_DEBUG_H
  3 
  4 /*
  5  * An instance of this structure is created in a special
  6  * ELF section at every dynamic debug callsite.  At runtime,
  7  * the special section is treated as an array of these.
  8  */
  9 struct _ddebug {
 10         /*
 11          * These fields are used to drive the user interface
 12          * for selecting and displaying debug callsites.
 13          */
 14         const char *modname;
 15         const char *function;
 16         const char *filename;
 17         const char *format;
 18         unsigned int lineno:18;
 19         /*
 20          * The flags field controls the behaviour at the callsite.
 21          * The bits here are changed dynamically when the user
 22          * writes commands to <debugfs>/dynamic_debug/control
 23          */
 24 #define _DPRINTK_FLAGS_NONE     0
 25 #define _DPRINTK_FLAGS_PRINT    (1<<0) /* printk() a message using the format */
 26 #define _DPRINTK_FLAGS_INCL_MODNAME     (1<<1)
 27 #define _DPRINTK_FLAGS_INCL_FUNCNAME    (1<<2)
 28 #define _DPRINTK_FLAGS_INCL_LINENO      (1<<3)
 29 #define _DPRINTK_FLAGS_INCL_TID         (1<<4)
 30 #if defined DEBUG
 31 #define _DPRINTK_FLAGS_DEFAULT _DPRINTK_FLAGS_PRINT
 32 #else
 33 #define _DPRINTK_FLAGS_DEFAULT 0
 34 #endif
 35         unsigned int flags:8;
 36 } __attribute__((aligned(8)));
 37 
 38 
 39 int ddebug_add_module(struct _ddebug *tab, unsigned int n,
 40                                 const char *modname);
 41 
 42 #if defined(CONFIG_DYNAMIC_DEBUG)
 43 extern int ddebug_remove_module(const char *mod_name);
 44 extern __printf(2, 3)
 45 int __dynamic_pr_debug(struct _ddebug *descriptor, const char *fmt, ...);
 46 
 47 extern int ddebug_dyndbg_module_param_cb(char *param, char *val,
 48                                         const char *modname);
 49 
 50 struct device;
 51 
 52 extern __printf(3, 4)
 53 int __dynamic_dev_dbg(struct _ddebug *descriptor, const struct device *dev,
 54                       const char *fmt, ...);
 55 
 56 struct net_device;
 57 
 58 extern __printf(3, 4)
 59 int __dynamic_netdev_dbg(struct _ddebug *descriptor,
 60                          const struct net_device *dev,
 61                          const char *fmt, ...);
 62 
 63 #define DEFINE_DYNAMIC_DEBUG_METADATA(name, fmt)                \
 64         static struct _ddebug __used __aligned(8)               \
 65         __attribute__((section("__verbose"))) name = {          \
 66                 .modname = KBUILD_MODNAME,                      \
 67                 .function = __func__,                           \
 68                 .filename = __FILE__,                           \
 69                 .format = (fmt),                                \
 70                 .lineno = __LINE__,                             \
 71                 .flags =  _DPRINTK_FLAGS_DEFAULT,               \
 72         }
 73 
 74 #define dynamic_pr_debug(fmt, ...)                              \
 75 do {                                                            \
 76         DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt);         \
 77         if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT))  \
 78                 __dynamic_pr_debug(&descriptor, pr_fmt(fmt),    \
 79                                    ##__VA_ARGS__);              \
 80 } while (0)
 81 
 82 #define dynamic_dev_dbg(dev, fmt, ...)                          \
 83 do {                                                            \
 84         DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt);         \
 85         if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT))  \
 86                 __dynamic_dev_dbg(&descriptor, dev, fmt,        \
 87                                   ##__VA_ARGS__);               \
 88 } while (0)
 89 
 90 #define dynamic_netdev_dbg(dev, fmt, ...)                       \
 91 do {                                                            \
 92         DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt);         \
 93         if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT))  \
 94                 __dynamic_netdev_dbg(&descriptor, dev, fmt,     \
 95                                      ##__VA_ARGS__);            \
 96 } while (0)
 97 
 98 #else
 99 
100 #include <linux/string.h>
101 #include <linux/errno.h>
102 
103 static inline int ddebug_remove_module(const char *mod)
104 {
105         return 0;
106 }
107 
108 static inline int ddebug_dyndbg_module_param_cb(char *param, char *val,
109                                                 const char *modname)
110 {
111         if (strstr(param, "dyndbg")) {
112                 /* avoid pr_warn(), which wants pr_fmt() fully defined */
113                 printk(KERN_WARNING "dyndbg param is supported only in "
114                         "CONFIG_DYNAMIC_DEBUG builds\n");
115                 return 0; /* allow and ignore */
116         }
117         return -EINVAL;
118 }
119 
120 #define dynamic_pr_debug(fmt, ...)                                      \
121         do { if (0) printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); } while (0)
122 #define dynamic_dev_dbg(dev, fmt, ...)                                  \
123         do { if (0) dev_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__); } while (0)
124 #endif
125 
126 #endif
127 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp