Commit | Line | Data |
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968ab183 LT |
1 | #ifndef __KERNEL_PRINTK__ |
2 | #define __KERNEL_PRINTK__ | |
3 | ||
162a7e75 MT |
4 | #include <linux/init.h> |
5 | ||
968ab183 LT |
6 | extern const char linux_banner[]; |
7 | extern const char linux_proc_banner[]; | |
8 | ||
7d1e91ae JP |
9 | #define KERN_EMERG "<0>" /* system is unusable */ |
10 | #define KERN_ALERT "<1>" /* action must be taken immediately */ | |
11 | #define KERN_CRIT "<2>" /* critical conditions */ | |
12 | #define KERN_ERR "<3>" /* error conditions */ | |
13 | #define KERN_WARNING "<4>" /* warning conditions */ | |
14 | #define KERN_NOTICE "<5>" /* normal but significant condition */ | |
15 | #define KERN_INFO "<6>" /* informational */ | |
16 | #define KERN_DEBUG "<7>" /* debug-level messages */ | |
968ab183 LT |
17 | |
18 | /* Use the default kernel loglevel */ | |
19 | #define KERN_DEFAULT "<d>" | |
20 | /* | |
21 | * Annotation for a "continued" line of log printout (only done after a | |
22 | * line that had no enclosing \n). Only to be used by core/arch code | |
23 | * during early bootup (a continued line is not SMP-safe otherwise). | |
24 | */ | |
7d1e91ae | 25 | #define KERN_CONT "<c>" |
968ab183 LT |
26 | |
27 | extern int console_printk[]; | |
28 | ||
29 | #define console_loglevel (console_printk[0]) | |
30 | #define default_message_loglevel (console_printk[1]) | |
31 | #define minimum_console_loglevel (console_printk[2]) | |
32 | #define default_console_loglevel (console_printk[3]) | |
33 | ||
a9747cc3 JP |
34 | static inline void console_silent(void) |
35 | { | |
36 | console_loglevel = 0; | |
37 | } | |
38 | ||
39 | static inline void console_verbose(void) | |
40 | { | |
41 | if (console_loglevel) | |
42 | console_loglevel = 15; | |
43 | } | |
44 | ||
968ab183 LT |
45 | struct va_format { |
46 | const char *fmt; | |
47 | va_list *va; | |
48 | }; | |
49 | ||
50 | /* | |
51 | * FW_BUG | |
52 | * Add this to a message where you are sure the firmware is buggy or behaves | |
53 | * really stupid or out of spec. Be aware that the responsible BIOS developer | |
54 | * should be able to fix this issue or at least get a concrete idea of the | |
55 | * problem by reading your message without the need of looking at the kernel | |
56 | * code. | |
57 | * | |
58 | * Use it for definite and high priority BIOS bugs. | |
59 | * | |
60 | * FW_WARN | |
61 | * Use it for not that clear (e.g. could the kernel messed up things already?) | |
62 | * and medium priority BIOS bugs. | |
63 | * | |
64 | * FW_INFO | |
65 | * Use this one if you want to tell the user or vendor about something | |
66 | * suspicious, but generally harmless related to the firmware. | |
67 | * | |
68 | * Use it for information or very low priority BIOS bugs. | |
69 | */ | |
70 | #define FW_BUG "[Firmware Bug]: " | |
71 | #define FW_WARN "[Firmware Warn]: " | |
72 | #define FW_INFO "[Firmware Info]: " | |
73 | ||
74 | /* | |
75 | * HW_ERR | |
76 | * Add this to a message for hardware errors, so that user can report | |
77 | * it to hardware vendor instead of LKML or software vendor. | |
78 | */ | |
79 | #define HW_ERR "[Hardware Error]: " | |
80 | ||
5264f2f7 JP |
81 | /* |
82 | * Dummy printk for disabled debugging statements to use whilst maintaining | |
83 | * gcc's format and side-effect checking. | |
84 | */ | |
85 | static inline __attribute__ ((format (printf, 1, 2))) | |
86 | int no_printk(const char *fmt, ...) | |
87 | { | |
88 | return 0; | |
89 | } | |
90 | ||
91 | extern asmlinkage __attribute__ ((format (printf, 1, 2))) | |
92 | void early_printk(const char *fmt, ...); | |
93 | ||
94 | extern int printk_needs_cpu(int cpu); | |
95 | extern void printk_tick(void); | |
96 | ||
968ab183 | 97 | #ifdef CONFIG_PRINTK |
5264f2f7 JP |
98 | asmlinkage __attribute__ ((format (printf, 1, 0))) |
99 | int vprintk(const char *fmt, va_list args); | |
100 | asmlinkage __attribute__ ((format (printf, 1, 2))) __cold | |
101 | int printk(const char *fmt, ...); | |
968ab183 LT |
102 | |
103 | /* | |
104 | * Please don't use printk_ratelimit(), because it shares ratelimiting state | |
105 | * with all other unrelated printk_ratelimit() callsites. Instead use | |
106 | * printk_ratelimited() or plain old __ratelimit(). | |
107 | */ | |
108 | extern int __printk_ratelimit(const char *func); | |
109 | #define printk_ratelimit() __printk_ratelimit(__func__) | |
110 | extern bool printk_timed_ratelimit(unsigned long *caller_jiffies, | |
111 | unsigned int interval_msec); | |
112 | ||
113 | extern int printk_delay_msec; | |
114 | extern int dmesg_restrict; | |
455cd5ab | 115 | extern int kptr_restrict; |
968ab183 | 116 | |
968ab183 | 117 | void log_buf_kexec_setup(void); |
162a7e75 | 118 | void __init setup_log_buf(int early); |
968ab183 | 119 | #else |
5264f2f7 JP |
120 | static inline __attribute__ ((format (printf, 1, 0))) |
121 | int vprintk(const char *s, va_list args) | |
122 | { | |
123 | return 0; | |
124 | } | |
125 | static inline __attribute__ ((format (printf, 1, 2))) __cold | |
126 | int printk(const char *s, ...) | |
127 | { | |
128 | return 0; | |
129 | } | |
130 | static inline int printk_ratelimit(void) | |
131 | { | |
132 | return 0; | |
133 | } | |
134 | static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies, | |
135 | unsigned int interval_msec) | |
136 | { | |
137 | return false; | |
138 | } | |
968ab183 | 139 | |
968ab183 LT |
140 | static inline void log_buf_kexec_setup(void) |
141 | { | |
142 | } | |
162a7e75 MT |
143 | |
144 | static inline void setup_log_buf(int early) | |
145 | { | |
146 | } | |
968ab183 LT |
147 | #endif |
148 | ||
968ab183 LT |
149 | extern void dump_stack(void) __cold; |
150 | ||
968ab183 LT |
151 | #ifndef pr_fmt |
152 | #define pr_fmt(fmt) fmt | |
153 | #endif | |
154 | ||
155 | #define pr_emerg(fmt, ...) \ | |
a3f938bf | 156 | printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__) |
968ab183 | 157 | #define pr_alert(fmt, ...) \ |
a3f938bf | 158 | printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__) |
968ab183 | 159 | #define pr_crit(fmt, ...) \ |
a3f938bf | 160 | printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__) |
968ab183 | 161 | #define pr_err(fmt, ...) \ |
a3f938bf | 162 | printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) |
968ab183 | 163 | #define pr_warning(fmt, ...) \ |
a3f938bf | 164 | printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__) |
968ab183 LT |
165 | #define pr_warn pr_warning |
166 | #define pr_notice(fmt, ...) \ | |
a3f938bf | 167 | printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__) |
968ab183 | 168 | #define pr_info(fmt, ...) \ |
a3f938bf | 169 | printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) |
968ab183 LT |
170 | #define pr_cont(fmt, ...) \ |
171 | printk(KERN_CONT fmt, ##__VA_ARGS__) | |
172 | ||
173 | /* pr_devel() should produce zero code unless DEBUG is defined */ | |
174 | #ifdef DEBUG | |
175 | #define pr_devel(fmt, ...) \ | |
176 | printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) | |
177 | #else | |
178 | #define pr_devel(fmt, ...) \ | |
5264f2f7 | 179 | no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) |
968ab183 LT |
180 | #endif |
181 | ||
182 | /* If you are writing a driver, please use dev_dbg instead */ | |
183 | #if defined(DEBUG) | |
184 | #define pr_debug(fmt, ...) \ | |
185 | printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) | |
186 | #elif defined(CONFIG_DYNAMIC_DEBUG) | |
187 | /* dynamic_pr_debug() uses pr_fmt() internally so we don't need it here */ | |
188 | #define pr_debug(fmt, ...) \ | |
189 | dynamic_pr_debug(fmt, ##__VA_ARGS__) | |
190 | #else | |
191 | #define pr_debug(fmt, ...) \ | |
5264f2f7 | 192 | no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) |
968ab183 LT |
193 | #endif |
194 | ||
16cb839f JP |
195 | /* |
196 | * Print a one-time message (analogous to WARN_ONCE() et al): | |
197 | */ | |
198 | ||
199 | #ifdef CONFIG_PRINTK | |
200 | #define printk_once(fmt, ...) \ | |
201 | ({ \ | |
202 | static bool __print_once; \ | |
203 | \ | |
204 | if (!__print_once) { \ | |
205 | __print_once = true; \ | |
206 | printk(fmt, ##__VA_ARGS__); \ | |
207 | } \ | |
208 | }) | |
209 | #else | |
210 | #define printk_once(fmt, ...) \ | |
211 | no_printk(fmt, ##__VA_ARGS__) | |
212 | #endif | |
213 | ||
214 | #define pr_emerg_once(fmt, ...) \ | |
215 | printk_once(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__) | |
216 | #define pr_alert_once(fmt, ...) \ | |
217 | printk_once(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__) | |
218 | #define pr_crit_once(fmt, ...) \ | |
219 | printk_once(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__) | |
220 | #define pr_err_once(fmt, ...) \ | |
221 | printk_once(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) | |
222 | #define pr_warn_once(fmt, ...) \ | |
223 | printk_once(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__) | |
224 | #define pr_notice_once(fmt, ...) \ | |
225 | printk_once(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__) | |
226 | #define pr_info_once(fmt, ...) \ | |
227 | printk_once(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) | |
228 | #define pr_cont_once(fmt, ...) \ | |
229 | printk_once(KERN_CONT pr_fmt(fmt), ##__VA_ARGS__) | |
230 | /* If you are writing a driver, please use dev_dbg instead */ | |
231 | #if defined(DEBUG) | |
232 | #define pr_debug_once(fmt, ...) \ | |
233 | printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) | |
234 | #else | |
235 | #define pr_debug_once(fmt, ...) \ | |
236 | no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) | |
237 | #endif | |
238 | ||
968ab183 LT |
239 | /* |
240 | * ratelimited messages with local ratelimit_state, | |
241 | * no local ratelimit_state used in the !PRINTK case | |
242 | */ | |
243 | #ifdef CONFIG_PRINTK | |
6ec42a56 JP |
244 | #define printk_ratelimited(fmt, ...) \ |
245 | ({ \ | |
968ab183 LT |
246 | static DEFINE_RATELIMIT_STATE(_rs, \ |
247 | DEFAULT_RATELIMIT_INTERVAL, \ | |
248 | DEFAULT_RATELIMIT_BURST); \ | |
249 | \ | |
250 | if (__ratelimit(&_rs)) \ | |
251 | printk(fmt, ##__VA_ARGS__); \ | |
252 | }) | |
253 | #else | |
6ec42a56 JP |
254 | #define printk_ratelimited(fmt, ...) \ |
255 | no_printk(fmt, ##__VA_ARGS__) | |
968ab183 LT |
256 | #endif |
257 | ||
6ec42a56 | 258 | #define pr_emerg_ratelimited(fmt, ...) \ |
968ab183 | 259 | printk_ratelimited(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__) |
6ec42a56 | 260 | #define pr_alert_ratelimited(fmt, ...) \ |
968ab183 | 261 | printk_ratelimited(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__) |
6ec42a56 | 262 | #define pr_crit_ratelimited(fmt, ...) \ |
968ab183 | 263 | printk_ratelimited(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__) |
6ec42a56 | 264 | #define pr_err_ratelimited(fmt, ...) \ |
968ab183 | 265 | printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) |
6ec42a56 | 266 | #define pr_warn_ratelimited(fmt, ...) \ |
968ab183 | 267 | printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__) |
6ec42a56 | 268 | #define pr_notice_ratelimited(fmt, ...) \ |
968ab183 | 269 | printk_ratelimited(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__) |
6ec42a56 | 270 | #define pr_info_ratelimited(fmt, ...) \ |
968ab183 LT |
271 | printk_ratelimited(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) |
272 | /* no pr_cont_ratelimited, don't do that... */ | |
273 | /* If you are writing a driver, please use dev_dbg instead */ | |
274 | #if defined(DEBUG) | |
6ec42a56 | 275 | #define pr_debug_ratelimited(fmt, ...) \ |
968ab183 LT |
276 | printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) |
277 | #else | |
278 | #define pr_debug_ratelimited(fmt, ...) \ | |
5264f2f7 | 279 | no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) |
968ab183 LT |
280 | #endif |
281 | ||
ac83ed68 JP |
282 | enum { |
283 | DUMP_PREFIX_NONE, | |
284 | DUMP_PREFIX_ADDRESS, | |
285 | DUMP_PREFIX_OFFSET | |
286 | }; | |
287 | extern void hex_dump_to_buffer(const void *buf, size_t len, | |
288 | int rowsize, int groupsize, | |
289 | char *linebuf, size_t linebuflen, bool ascii); | |
290 | #ifdef CONFIG_PRINTK | |
291 | extern void print_hex_dump(const char *level, const char *prefix_str, | |
292 | int prefix_type, int rowsize, int groupsize, | |
293 | const void *buf, size_t len, bool ascii); | |
294 | extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type, | |
295 | const void *buf, size_t len); | |
296 | #else | |
297 | static inline void print_hex_dump(const char *level, const char *prefix_str, | |
298 | int prefix_type, int rowsize, int groupsize, | |
299 | const void *buf, size_t len, bool ascii) | |
300 | { | |
301 | } | |
302 | static inline void print_hex_dump_bytes(const char *prefix_str, int prefix_type, | |
303 | const void *buf, size_t len) | |
304 | { | |
305 | } | |
306 | ||
307 | #endif | |
308 | ||
968ab183 | 309 | #endif |