1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
|
// SPDX-License-Identifier: GPL-2.0
/*
* dev_printk.h - printk messages helpers for devices
*
* Copyright (c) 2001-2003 Patrick Mochel <mochel@osdl.org>
* Copyright (c) 2004-2009 Greg Kroah-Hartman <gregkh@suse.de>
* Copyright (c) 2008-2009 Novell Inc.
*
*/
#ifndef _DEVICE_PRINTK_H_
#define _DEVICE_PRINTK_H_
#include <linux/compiler.h>
#include <linux/types.h>
#include <linux/ratelimit.h>
#ifndef dev_fmt
#define dev_fmt(fmt) fmt
#endif
struct device;
#define PRINTK_INFO_SUBSYSTEM_LEN 16
#define PRINTK_INFO_DEVICE_LEN 48
struct dev_printk_info {
char subsystem[PRINTK_INFO_SUBSYSTEM_LEN];
char device[PRINTK_INFO_DEVICE_LEN];
};
#ifdef CONFIG_PRINTK
__printf(3, 0) __cold
int dev_vprintk_emit(int level, const struct device *dev,
const char *fmt, va_list args);
__printf(3, 4) __cold
int dev_printk_emit(int level, const struct device *dev, const char *fmt, ...);
__printf(3, 4) __cold
void _dev_printk(const char *level, const struct device *dev,
const char *fmt, ...);
__printf(2, 3) __cold
void _dev_emerg(const struct device *dev, const char *fmt, ...);
__printf(2, 3) __cold
void _dev_alert(const struct device *dev, const char *fmt, ...);
__printf(2, 3) __cold
void _dev_crit(const struct device *dev, const char *fmt, ...);
__printf(2, 3) __cold
void _dev_err(const struct device *dev, const char *fmt, ...);
__printf(2, 3) __cold
void _dev_warn(const struct device *dev, const char *fmt, ...);
__printf(2, 3) __cold
void _dev_notice(const struct device *dev, const char *fmt, ...);
__printf(2, 3) __cold
void _dev_info(const struct device *dev, const char *fmt, ...);
#else
static inline __printf(3, 0)
int dev_vprintk_emit(int level, const struct device *dev,
const char *fmt, va_list args)
{ return 0; }
static inline __printf(3, 4)
int dev_printk_emit(int level, const struct device *dev, const char *fmt, ...)
{ return 0; }
static inline void __dev_printk(const char *level, const struct device *dev,
struct va_format *vaf)
{}
static inline __printf(3, 4)
void _dev_printk(const char *level, const struct device *dev,
const char *fmt, ...)
{}
static inline __printf(2, 3)
void _dev_emerg(const struct device *dev, const char *fmt, ...)
{}
static inline __printf(2, 3)
void _dev_crit(const struct device *dev, const char *fmt, ...)
{}
static inline __printf(2, 3)
void _dev_alert(const struct device *dev, const char *fmt, ...)
{}
static inline __printf(2, 3)
void _dev_err(const struct device *dev, const char *fmt, ...)
{}
static inline __printf(2, 3)
void _dev_warn(const struct device *dev, const char *fmt, ...)
{}
static inline __printf(2, 3)
void _dev_notice(const struct device *dev, const char *fmt, ...)
{}
static inline __printf(2, 3)
void _dev_info(const struct device *dev, const char *fmt, ...)
{}
#endif
/*
* Need to take variadic arguments even though we don't use them, as dev_fmt()
* may only just have been expanded and may result in multiple arguments.
*/
#define dev_printk_index_emit(level, fmt, ...) \
printk_index_subsys_emit("%s %s: ", level, fmt)
#define dev_printk_index_wrap(_p_func, level, dev, fmt, ...) \
({ \
dev_printk_index_emit(level, fmt); \
_p_func(dev, fmt, ##__VA_ARGS__); \
})
/*
* Some callsites directly call dev_printk rather than going through the
* dev_<level> infrastructure, so we need to emit here as well as inside those
* level-specific macros. Only one index entry will be produced, either way,
* since dev_printk's `fmt` isn't known at compile time if going through the
* dev_<level> macros.
*
* dev_fmt() isn't called for dev_printk when used directly, as it's used by
* the dev_<level> macros internally which already have dev_fmt() processed.
*
* We also can't use dev_printk_index_wrap directly, because we have a separate
* level to process.
*/
#define dev_printk(level, dev, fmt, ...) \
({ \
dev_printk_index_emit(level, fmt); \
_dev_printk(level, dev, fmt, ##__VA_ARGS__); \
})
/*
* #defines for all the dev_<level> macros to prefix with whatever
* possible use of #define dev_fmt(fmt) ...
*/
#define dev_emerg(dev, fmt, ...) \
dev_printk_index_wrap(_dev_emerg, KERN_EMERG, dev, dev_fmt(fmt), ##__VA_ARGS__)
#define dev_crit(dev, fmt, ...) \
dev_printk_index_wrap(_dev_crit, KERN_CRIT, dev, dev_fmt(fmt), ##__VA_ARGS__)
#define dev_alert(dev, fmt, ...) \
dev_printk_index_wrap(_dev_alert, KERN_ALERT, dev, dev_fmt(fmt), ##__VA_ARGS__)
#define dev_err(dev, fmt, ...) \
dev_printk_index_wrap(_dev_err, KERN_ERR, dev, dev_fmt(fmt), ##__VA_ARGS__)
#define dev_warn(dev, fmt, ...) \
dev_printk_index_wrap(_dev_warn, KERN_WARNING, dev, dev_fmt(fmt), ##__VA_ARGS__)
#define dev_notice(dev, fmt, ...) \
dev_printk_index_wrap(_dev_notice, KERN_NOTICE, dev, dev_fmt(fmt), ##__VA_ARGS__)
#define dev_info(dev, fmt, ...) \
dev_printk_index_wrap(_dev_info, KERN_INFO, dev, dev_fmt(fmt), ##__VA_ARGS__)
#if defined(CONFIG_DYNAMIC_DEBUG) || \
(defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
#define dev_dbg(dev, fmt, ...) \
dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__)
#elif defined(DEBUG)
#define dev_dbg(dev, fmt, ...) \
dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__)
#else
#define dev_dbg(dev, fmt, ...) \
({ \
if (0) \
dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
})
#endif
#ifdef CONFIG_PRINTK
#define dev_level_once(dev_level, dev, fmt, ...) \
do { \
static bool __print_once __read_mostly; \
\
if (!__print_once) { \
__print_once = true; \
dev_level(dev, fmt, ##__VA_ARGS__); \
} \
} while (0)
#else
#define dev_level_once(dev_level, dev, fmt, ...) \
do { \
if (0) \
dev_level(dev, fmt, ##__VA_ARGS__); \
} while (0)
#endif
#define dev_emerg_once(dev, fmt, ...) \
dev_level_once(dev_emerg, dev, fmt, ##__VA_ARGS__)
#define dev_alert_once(dev, fmt, ...) \
dev_level_once(dev_alert, dev, fmt, ##__VA_ARGS__)
#define dev_crit_once(dev, fmt, ...) \
dev_level_once(dev_crit, dev, fmt, ##__VA_ARGS__)
#define dev_err_once(dev, fmt, ...) \
dev_level_once(dev_err, dev, fmt, ##__VA_ARGS__)
#define dev_warn_once(dev, fmt, ...) \
dev_level_once(dev_warn, dev, fmt, ##__VA_ARGS__)
#define dev_notice_once(dev, fmt, ...) \
dev_level_once(dev_notice, dev, fmt, ##__VA_ARGS__)
#define dev_info_once(dev, fmt, ...) \
dev_level_once(dev_info, dev, fmt, ##__VA_ARGS__)
#define dev_dbg_once(dev, fmt, ...) \
dev_level_once(dev_dbg, dev, fmt, ##__VA_ARGS__)
#define dev_level_ratelimited(dev_level, dev, fmt, ...) \
do { \
static DEFINE_RATELIMIT_STATE(_rs, \
DEFAULT_RATELIMIT_INTERVAL, \
DEFAULT_RATELIMIT_BURST); \
if (__ratelimit(&_rs)) \
dev_level(dev, fmt, ##__VA_ARGS__); \
} while (0)
#define dev_emerg_ratelimited(dev, fmt, ...) \
dev_level_ratelimited(dev_emerg, dev, fmt, ##__VA_ARGS__)
#define dev_alert_ratelimited(dev, fmt, ...) \
dev_level_ratelimited(dev_alert, dev, fmt, ##__VA_ARGS__)
#define dev_crit_ratelimited(dev, fmt, ...) \
dev_level_ratelimited(dev_crit, dev, fmt, ##__VA_ARGS__)
#define dev_err_ratelimited(dev, fmt, ...) \
dev_level_ratelimited(dev_err, dev, fmt, ##__VA_ARGS__)
#define dev_warn_ratelimited(dev, fmt, ...) \
dev_level_ratelimited(dev_warn, dev, fmt, ##__VA_ARGS__)
#define dev_notice_ratelimited(dev, fmt, ...) \
dev_level_ratelimited(dev_notice, dev, fmt, ##__VA_ARGS__)
#define dev_info_ratelimited(dev, fmt, ...) \
dev_level_ratelimited(dev_info, dev, fmt, ##__VA_ARGS__)
#if defined(CONFIG_DYNAMIC_DEBUG) || \
(defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
/* descriptor check is first to prevent flooding with "callbacks suppressed" */
#define dev_dbg_ratelimited(dev, fmt, ...) \
do { \
static DEFINE_RATELIMIT_STATE(_rs, \
DEFAULT_RATELIMIT_INTERVAL, \
DEFAULT_RATELIMIT_BURST); \
DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
if (DYNAMIC_DEBUG_BRANCH(descriptor) && \
__ratelimit(&_rs)) \
__dynamic_dev_dbg(&descriptor, dev, dev_fmt(fmt), \
##__VA_ARGS__); \
} while (0)
#elif defined(DEBUG)
#define dev_dbg_ratelimited(dev, fmt, ...) \
do { \
static DEFINE_RATELIMIT_STATE(_rs, \
DEFAULT_RATELIMIT_INTERVAL, \
DEFAULT_RATELIMIT_BURST); \
if (__ratelimit(&_rs)) \
dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
} while (0)
#else
#define dev_dbg_ratelimited(dev, fmt, ...) \
do { \
if (0) \
dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
} while (0)
#endif
#ifdef VERBOSE_DEBUG
#define dev_vdbg dev_dbg
#else
#define dev_vdbg(dev, fmt, ...) \
({ \
if (0) \
dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
})
#endif
/*
* dev_WARN*() acts like dev_printk(), but with the key difference of
* using WARN/WARN_ONCE to include file/line information and a backtrace.
*/
#define dev_WARN(dev, format, arg...) \
WARN(1, "%s %s: " format, dev_driver_string(dev), dev_name(dev), ## arg)
#define dev_WARN_ONCE(dev, condition, format, arg...) \
WARN_ONCE(condition, "%s %s: " format, \
dev_driver_string(dev), dev_name(dev), ## arg)
#endif /* _DEVICE_PRINTK_H_ */
|
