1 #ifndef _DYNAMIC_DEBUG_H
2 #define _DYNAMIC_DEBUG_H
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.
11 * These fields are used to drive the user interface
12 * for selecting and displaying debug callsites.
18 unsigned int lineno
:18;
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
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)
31 #define _DPRINTK_FLAGS_DEFAULT _DPRINTK_FLAGS_PRINT
33 #define _DPRINTK_FLAGS_DEFAULT 0
36 } __attribute__((aligned(8)));
39 int ddebug_add_module(struct _ddebug
*tab
, unsigned int n
,
42 #if defined(CONFIG_DYNAMIC_DEBUG)
43 extern int ddebug_remove_module(const char *mod_name
);
45 int __dynamic_pr_debug(struct _ddebug
*descriptor
, const char *fmt
, ...);
50 int __dynamic_dev_dbg(struct _ddebug
*descriptor
, const struct device
*dev
,
51 const char *fmt
, ...);
56 int __dynamic_netdev_dbg(struct _ddebug
*descriptor
,
57 const struct net_device
*dev
,
58 const char *fmt
, ...);
60 #define DEFINE_DYNAMIC_DEBUG_METADATA(name, fmt) \
61 static struct _ddebug __used __aligned(8) \
62 __attribute__((section("__verbose"))) name = { \
63 .modname = KBUILD_MODNAME, \
64 .function = __func__, \
65 .filename = __FILE__, \
68 .flags = _DPRINTK_FLAGS_DEFAULT, \
71 #define dynamic_pr_debug(fmt, ...) \
73 DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
74 if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \
75 __dynamic_pr_debug(&descriptor, pr_fmt(fmt), \
79 #define dynamic_dev_dbg(dev, fmt, ...) \
81 DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
82 if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \
83 __dynamic_dev_dbg(&descriptor, dev, fmt, \
87 #define dynamic_netdev_dbg(dev, fmt, ...) \
89 DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
90 if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \
91 __dynamic_netdev_dbg(&descriptor, dev, fmt, \
97 static inline int ddebug_remove_module(const char *mod
)
102 #define dynamic_pr_debug(fmt, ...) \
103 do { if (0) printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); } while (0)
104 #define dynamic_dev_dbg(dev, fmt, ...) \
105 do { if (0) dev_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__); } while (0)