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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
968ab183 LT |
2 | #ifndef __KERNEL_PRINTK__ |
3 | #define __KERNEL_PRINTK__ | |
4 | ||
1b2c289b | 5 | #include <stdarg.h> |
162a7e75 | 6 | #include <linux/init.h> |
314ba352 | 7 | #include <linux/kern_levels.h> |
154c2670 | 8 | #include <linux/linkage.h> |
c28aa1f0 | 9 | #include <linux/cache.h> |
b4a461e7 | 10 | #include <linux/ratelimit_types.h> |
a358f406 | 11 | #include <linux/once_lite.h> |
162a7e75 | 12 | |
968ab183 LT |
13 | extern const char linux_banner[]; |
14 | extern const char linux_proc_banner[]; | |
15 | ||
36d818f6 AS |
16 | extern int oops_in_progress; /* If set, an oops, panic(), BUG() or die() is in progress */ |
17 | ||
262c5e86 PM |
18 | #define PRINTK_MAX_SINGLE_HEADER_LEN 2 |
19 | ||
acc8fa41 JP |
20 | static inline int printk_get_level(const char *buffer) |
21 | { | |
04d2c8c8 | 22 | if (buffer[0] == KERN_SOH_ASCII && buffer[1]) { |
acc8fa41 JP |
23 | switch (buffer[1]) { |
24 | case '0' ... '7': | |
4bcc595c | 25 | case 'c': /* KERN_CONT */ |
acc8fa41 JP |
26 | return buffer[1]; |
27 | } | |
28 | } | |
29 | return 0; | |
30 | } | |
31 | ||
32 | static inline const char *printk_skip_level(const char *buffer) | |
33 | { | |
0185698c PM |
34 | if (printk_get_level(buffer)) |
35 | return buffer + 2; | |
36 | ||
acc8fa41 JP |
37 | return buffer; |
38 | } | |
39 | ||
49795757 PM |
40 | static inline const char *printk_skip_headers(const char *buffer) |
41 | { | |
42 | while (printk_get_level(buffer)) | |
43 | buffer = printk_skip_level(buffer); | |
44 | ||
45 | return buffer; | |
46 | } | |
47 | ||
d43ff430 TH |
48 | #define CONSOLE_EXT_LOG_MAX 8192 |
49 | ||
a8fe19eb | 50 | /* printk's without a loglevel use this.. */ |
42a9dc0b | 51 | #define MESSAGE_LOGLEVEL_DEFAULT CONFIG_MESSAGE_LOGLEVEL_DEFAULT |
a8fe19eb BP |
52 | |
53 | /* We show everything that is MORE important than this.. */ | |
54 | #define CONSOLE_LOGLEVEL_SILENT 0 /* Mum's the word */ | |
55 | #define CONSOLE_LOGLEVEL_MIN 1 /* Minimum loglevel we let people use */ | |
a8fe19eb BP |
56 | #define CONSOLE_LOGLEVEL_DEBUG 10 /* issue debug messages */ |
57 | #define CONSOLE_LOGLEVEL_MOTORMOUTH 15 /* You can't shut this one up */ | |
58 | ||
a8cfdc68 | 59 | /* |
22eceb8b HG |
60 | * Default used to be hard-coded at 7, quiet used to be hardcoded at 4, |
61 | * we're now allowing both to be set from kernel config. | |
a8cfdc68 OJ |
62 | */ |
63 | #define CONSOLE_LOGLEVEL_DEFAULT CONFIG_CONSOLE_LOGLEVEL_DEFAULT | |
22eceb8b | 64 | #define CONSOLE_LOGLEVEL_QUIET CONFIG_CONSOLE_LOGLEVEL_QUIET |
a8cfdc68 | 65 | |
968ab183 LT |
66 | extern int console_printk[]; |
67 | ||
68 | #define console_loglevel (console_printk[0]) | |
69 | #define default_message_loglevel (console_printk[1]) | |
70 | #define minimum_console_loglevel (console_printk[2]) | |
71 | #define default_console_loglevel (console_printk[3]) | |
72 | ||
a9747cc3 JP |
73 | static inline void console_silent(void) |
74 | { | |
a8fe19eb | 75 | console_loglevel = CONSOLE_LOGLEVEL_SILENT; |
a9747cc3 JP |
76 | } |
77 | ||
78 | static inline void console_verbose(void) | |
79 | { | |
80 | if (console_loglevel) | |
a8fe19eb | 81 | console_loglevel = CONSOLE_LOGLEVEL_MOTORMOUTH; |
a9747cc3 JP |
82 | } |
83 | ||
750afe7b BP |
84 | /* strlen("ratelimit") + 1 */ |
85 | #define DEVKMSG_STR_MAX_SIZE 10 | |
86 | extern char devkmsg_log_str[]; | |
87 | struct ctl_table; | |
88 | ||
c39ea0b9 FT |
89 | extern int suppress_printk; |
90 | ||
968ab183 LT |
91 | struct va_format { |
92 | const char *fmt; | |
93 | va_list *va; | |
94 | }; | |
95 | ||
96 | /* | |
97 | * FW_BUG | |
98 | * Add this to a message where you are sure the firmware is buggy or behaves | |
99 | * really stupid or out of spec. Be aware that the responsible BIOS developer | |
100 | * should be able to fix this issue or at least get a concrete idea of the | |
101 | * problem by reading your message without the need of looking at the kernel | |
102 | * code. | |
103 | * | |
104 | * Use it for definite and high priority BIOS bugs. | |
105 | * | |
106 | * FW_WARN | |
107 | * Use it for not that clear (e.g. could the kernel messed up things already?) | |
108 | * and medium priority BIOS bugs. | |
109 | * | |
110 | * FW_INFO | |
111 | * Use this one if you want to tell the user or vendor about something | |
112 | * suspicious, but generally harmless related to the firmware. | |
113 | * | |
114 | * Use it for information or very low priority BIOS bugs. | |
115 | */ | |
116 | #define FW_BUG "[Firmware Bug]: " | |
117 | #define FW_WARN "[Firmware Warn]: " | |
118 | #define FW_INFO "[Firmware Info]: " | |
119 | ||
120 | /* | |
121 | * HW_ERR | |
122 | * Add this to a message for hardware errors, so that user can report | |
123 | * it to hardware vendor instead of LKML or software vendor. | |
124 | */ | |
125 | #define HW_ERR "[Hardware Error]: " | |
126 | ||
0a9a8bfd NH |
127 | /* |
128 | * DEPRECATED | |
129 | * Add this to a message whenever you want to warn user space about the use | |
130 | * of a deprecated aspect of an API so they can stop using it | |
131 | */ | |
132 | #define DEPRECATED "[Deprecated]: " | |
133 | ||
5264f2f7 JP |
134 | /* |
135 | * Dummy printk for disabled debugging statements to use whilst maintaining | |
fe22cd9b | 136 | * gcc's format checking. |
5264f2f7 | 137 | */ |
069f0cd0 BP |
138 | #define no_printk(fmt, ...) \ |
139 | ({ \ | |
93b138dd MY |
140 | if (0) \ |
141 | printk(fmt, ##__VA_ARGS__); \ | |
069f0cd0 BP |
142 | 0; \ |
143 | }) | |
5264f2f7 | 144 | |
d0380e6c | 145 | #ifdef CONFIG_EARLY_PRINTK |
b9075fa9 | 146 | extern asmlinkage __printf(1, 2) |
5264f2f7 | 147 | void early_printk(const char *fmt, ...); |
d0380e6c TG |
148 | #else |
149 | static inline __printf(1, 2) __cold | |
150 | void early_printk(const char *s, ...) { } | |
151 | #endif | |
5264f2f7 | 152 | |
42a0bb3f | 153 | #ifdef CONFIG_PRINTK_NMI |
42a0bb3f PM |
154 | extern void printk_nmi_enter(void); |
155 | extern void printk_nmi_exit(void); | |
03fc7f9c PM |
156 | extern void printk_nmi_direct_enter(void); |
157 | extern void printk_nmi_direct_exit(void); | |
42a0bb3f | 158 | #else |
42a0bb3f PM |
159 | static inline void printk_nmi_enter(void) { } |
160 | static inline void printk_nmi_exit(void) { } | |
03fc7f9c PM |
161 | static inline void printk_nmi_direct_enter(void) { } |
162 | static inline void printk_nmi_direct_exit(void) { } | |
42a0bb3f | 163 | #endif /* PRINTK_NMI */ |
04b74b27 | 164 | |
74caba7f JO |
165 | struct dev_printk_info; |
166 | ||
968ab183 | 167 | #ifdef CONFIG_PRINTK |
74caba7f | 168 | asmlinkage __printf(4, 0) |
7ff9554b | 169 | int vprintk_emit(int facility, int level, |
74caba7f | 170 | const struct dev_printk_info *dev_info, |
7ff9554b KS |
171 | const char *fmt, va_list args); |
172 | ||
b9075fa9 | 173 | asmlinkage __printf(1, 0) |
5264f2f7 | 174 | int vprintk(const char *fmt, va_list args); |
7ff9554b | 175 | |
b9075fa9 | 176 | asmlinkage __printf(1, 2) __cold |
5264f2f7 | 177 | int printk(const char *fmt, ...); |
968ab183 | 178 | |
3ccf3e83 | 179 | /* |
aac74dc4 | 180 | * Special printk facility for scheduler/timekeeping use only, _DO_NOT_USE_ ! |
3ccf3e83 | 181 | */ |
aac74dc4 | 182 | __printf(1, 2) __cold int printk_deferred(const char *fmt, ...); |
3ccf3e83 | 183 | |
968ab183 LT |
184 | /* |
185 | * Please don't use printk_ratelimit(), because it shares ratelimiting state | |
186 | * with all other unrelated printk_ratelimit() callsites. Instead use | |
187 | * printk_ratelimited() or plain old __ratelimit(). | |
188 | */ | |
189 | extern int __printk_ratelimit(const char *func); | |
190 | #define printk_ratelimit() __printk_ratelimit(__func__) | |
191 | extern bool printk_timed_ratelimit(unsigned long *caller_jiffies, | |
192 | unsigned int interval_msec); | |
193 | ||
194 | extern int printk_delay_msec; | |
195 | extern int dmesg_restrict; | |
196 | ||
750afe7b | 197 | extern int |
32927393 | 198 | devkmsg_sysctl_set_loglvl(struct ctl_table *table, int write, void *buf, |
750afe7b BP |
199 | size_t *lenp, loff_t *ppos); |
200 | ||
dc72c32e FW |
201 | extern void wake_up_klogd(void); |
202 | ||
07261edb PK |
203 | char *log_buf_addr_get(void); |
204 | u32 log_buf_len_get(void); | |
692f66f2 | 205 | void log_buf_vmcoreinfo_setup(void); |
162a7e75 | 206 | void __init setup_log_buf(int early); |
8db14860 | 207 | __printf(1, 2) void dump_stack_set_arch_desc(const char *fmt, ...); |
196779b9 | 208 | void dump_stack_print_info(const char *log_lvl); |
a43cb95d | 209 | void show_regs_print_info(const char *log_lvl); |
4469c0f1 | 210 | extern asmlinkage void dump_stack_lvl(const char *log_lvl) __cold; |
e36df28f | 211 | extern asmlinkage void dump_stack(void) __cold; |
099f1c84 SS |
212 | extern void printk_safe_flush(void); |
213 | extern void printk_safe_flush_on_panic(void); | |
968ab183 | 214 | #else |
b9075fa9 | 215 | static inline __printf(1, 0) |
5264f2f7 JP |
216 | int vprintk(const char *s, va_list args) |
217 | { | |
218 | return 0; | |
219 | } | |
b9075fa9 | 220 | static inline __printf(1, 2) __cold |
5264f2f7 JP |
221 | int printk(const char *s, ...) |
222 | { | |
223 | return 0; | |
224 | } | |
3ccf3e83 | 225 | static inline __printf(1, 2) __cold |
aac74dc4 | 226 | int printk_deferred(const char *s, ...) |
3ccf3e83 PZ |
227 | { |
228 | return 0; | |
229 | } | |
5264f2f7 JP |
230 | static inline int printk_ratelimit(void) |
231 | { | |
232 | return 0; | |
233 | } | |
234 | static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies, | |
235 | unsigned int interval_msec) | |
236 | { | |
237 | return false; | |
238 | } | |
968ab183 | 239 | |
dc72c32e FW |
240 | static inline void wake_up_klogd(void) |
241 | { | |
242 | } | |
243 | ||
07261edb PK |
244 | static inline char *log_buf_addr_get(void) |
245 | { | |
246 | return NULL; | |
247 | } | |
248 | ||
249 | static inline u32 log_buf_len_get(void) | |
250 | { | |
251 | return 0; | |
252 | } | |
253 | ||
692f66f2 | 254 | static inline void log_buf_vmcoreinfo_setup(void) |
968ab183 LT |
255 | { |
256 | } | |
162a7e75 MT |
257 | |
258 | static inline void setup_log_buf(int early) | |
259 | { | |
260 | } | |
196779b9 | 261 | |
8db14860 | 262 | static inline __printf(1, 2) void dump_stack_set_arch_desc(const char *fmt, ...) |
98e5e1bf TH |
263 | { |
264 | } | |
265 | ||
196779b9 TH |
266 | static inline void dump_stack_print_info(const char *log_lvl) |
267 | { | |
268 | } | |
a43cb95d TH |
269 | |
270 | static inline void show_regs_print_info(const char *log_lvl) | |
271 | { | |
272 | } | |
099f1c84 | 273 | |
4469c0f1 AP |
274 | static inline void dump_stack_lvl(const char *log_lvl) |
275 | { | |
276 | } | |
277 | ||
e6310f0f | 278 | static inline void dump_stack(void) |
e36df28f DY |
279 | { |
280 | } | |
281 | ||
099f1c84 SS |
282 | static inline void printk_safe_flush(void) |
283 | { | |
284 | } | |
285 | ||
286 | static inline void printk_safe_flush_on_panic(void) | |
287 | { | |
288 | } | |
968ab183 LT |
289 | #endif |
290 | ||
766c268b JO |
291 | #ifdef CONFIG_SMP |
292 | extern int __printk_cpu_trylock(void); | |
293 | extern void __printk_wait_on_cpu_lock(void); | |
294 | extern void __printk_cpu_unlock(void); | |
295 | ||
296 | /** | |
297 | * printk_cpu_lock_irqsave() - Acquire the printk cpu-reentrant spinning | |
298 | * lock and disable interrupts. | |
299 | * @flags: Stack-allocated storage for saving local interrupt state, | |
300 | * to be passed to printk_cpu_unlock_irqrestore(). | |
301 | * | |
302 | * If the lock is owned by another CPU, spin until it becomes available. | |
303 | * Interrupts are restored while spinning. | |
304 | */ | |
305 | #define printk_cpu_lock_irqsave(flags) \ | |
306 | for (;;) { \ | |
307 | local_irq_save(flags); \ | |
308 | if (__printk_cpu_trylock()) \ | |
309 | break; \ | |
310 | local_irq_restore(flags); \ | |
311 | __printk_wait_on_cpu_lock(); \ | |
312 | } | |
313 | ||
314 | /** | |
315 | * printk_cpu_unlock_irqrestore() - Release the printk cpu-reentrant spinning | |
316 | * lock and restore interrupts. | |
317 | * @flags: Caller's saved interrupt state, from printk_cpu_lock_irqsave(). | |
318 | */ | |
319 | #define printk_cpu_unlock_irqrestore(flags) \ | |
320 | do { \ | |
321 | __printk_cpu_unlock(); \ | |
322 | local_irq_restore(flags); \ | |
323 | } while (0) \ | |
324 | ||
325 | #else | |
326 | ||
327 | #define printk_cpu_lock_irqsave(flags) ((void)flags) | |
328 | #define printk_cpu_unlock_irqrestore(flags) ((void)flags) | |
329 | ||
330 | #endif /* CONFIG_SMP */ | |
331 | ||
01c313dd AB |
332 | extern int kptr_restrict; |
333 | ||
90c165f0 RC |
334 | /** |
335 | * pr_fmt - used by the pr_*() macros to generate the printk format string | |
336 | * @fmt: format string passed from a pr_*() macro | |
337 | * | |
338 | * This macro can be used to generate a unified format string for pr_*() | |
339 | * macros. A common use is to prefix all pr_*() messages in a file with a common | |
340 | * string. For example, defining this at the top of a source file: | |
341 | * | |
342 | * #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
343 | * | |
344 | * would prefix all pr_info, pr_emerg... messages in the file with the module | |
345 | * name. | |
346 | */ | |
968ab183 LT |
347 | #ifndef pr_fmt |
348 | #define pr_fmt(fmt) fmt | |
349 | #endif | |
350 | ||
90c165f0 RC |
351 | /** |
352 | * pr_emerg - Print an emergency-level message | |
353 | * @fmt: format string | |
354 | * @...: arguments for the format string | |
355 | * | |
356 | * This macro expands to a printk with KERN_EMERG loglevel. It uses pr_fmt() to | |
357 | * generate the format string. | |
6e099f55 | 358 | */ |
a0cba217 LT |
359 | #define pr_emerg(fmt, ...) \ |
360 | printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__) | |
90c165f0 RC |
361 | /** |
362 | * pr_alert - Print an alert-level message | |
363 | * @fmt: format string | |
364 | * @...: arguments for the format string | |
365 | * | |
366 | * This macro expands to a printk with KERN_ALERT loglevel. It uses pr_fmt() to | |
367 | * generate the format string. | |
368 | */ | |
a0cba217 LT |
369 | #define pr_alert(fmt, ...) \ |
370 | printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__) | |
90c165f0 RC |
371 | /** |
372 | * pr_crit - Print a critical-level message | |
373 | * @fmt: format string | |
374 | * @...: arguments for the format string | |
375 | * | |
376 | * This macro expands to a printk with KERN_CRIT loglevel. It uses pr_fmt() to | |
377 | * generate the format string. | |
378 | */ | |
a0cba217 LT |
379 | #define pr_crit(fmt, ...) \ |
380 | printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__) | |
90c165f0 RC |
381 | /** |
382 | * pr_err - Print an error-level message | |
383 | * @fmt: format string | |
384 | * @...: arguments for the format string | |
385 | * | |
386 | * This macro expands to a printk with KERN_ERR loglevel. It uses pr_fmt() to | |
387 | * generate the format string. | |
388 | */ | |
a0cba217 LT |
389 | #define pr_err(fmt, ...) \ |
390 | printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) | |
90c165f0 RC |
391 | /** |
392 | * pr_warn - Print a warning-level message | |
393 | * @fmt: format string | |
394 | * @...: arguments for the format string | |
395 | * | |
396 | * This macro expands to a printk with KERN_WARNING loglevel. It uses pr_fmt() | |
397 | * to generate the format string. | |
398 | */ | |
61ff72f4 | 399 | #define pr_warn(fmt, ...) \ |
a0cba217 | 400 | printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__) |
90c165f0 RC |
401 | /** |
402 | * pr_notice - Print a notice-level message | |
403 | * @fmt: format string | |
404 | * @...: arguments for the format string | |
405 | * | |
406 | * This macro expands to a printk with KERN_NOTICE loglevel. It uses pr_fmt() to | |
407 | * generate the format string. | |
408 | */ | |
a0cba217 LT |
409 | #define pr_notice(fmt, ...) \ |
410 | printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__) | |
90c165f0 RC |
411 | /** |
412 | * pr_info - Print an info-level message | |
413 | * @fmt: format string | |
414 | * @...: arguments for the format string | |
415 | * | |
416 | * This macro expands to a printk with KERN_INFO loglevel. It uses pr_fmt() to | |
417 | * generate the format string. | |
418 | */ | |
a0cba217 LT |
419 | #define pr_info(fmt, ...) \ |
420 | printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) | |
90c165f0 RC |
421 | |
422 | /** | |
423 | * pr_cont - Continues a previous log message in the same line. | |
424 | * @fmt: format string | |
425 | * @...: arguments for the format string | |
426 | * | |
427 | * This macro expands to a printk with KERN_CONT loglevel. It should only be | |
428 | * used when continuing a log message with no newline ('\n') enclosed. Otherwise | |
429 | * it defaults back to KERN_DEFAULT loglevel. | |
7b1460ec | 430 | */ |
968ab183 LT |
431 | #define pr_cont(fmt, ...) \ |
432 | printk(KERN_CONT fmt, ##__VA_ARGS__) | |
433 | ||
90c165f0 RC |
434 | /** |
435 | * pr_devel - Print a debug-level message conditionally | |
436 | * @fmt: format string | |
437 | * @...: arguments for the format string | |
438 | * | |
439 | * This macro expands to a printk with KERN_DEBUG loglevel if DEBUG is | |
440 | * defined. Otherwise it does nothing. | |
441 | * | |
442 | * It uses pr_fmt() to generate the format string. | |
443 | */ | |
968ab183 LT |
444 | #ifdef DEBUG |
445 | #define pr_devel(fmt, ...) \ | |
446 | printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) | |
447 | #else | |
448 | #define pr_devel(fmt, ...) \ | |
5264f2f7 | 449 | no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) |
968ab183 LT |
450 | #endif |
451 | ||
29fc2bc7 | 452 | |
968ab183 | 453 | /* If you are writing a driver, please use dev_dbg instead */ |
ceabef7d OZ |
454 | #if defined(CONFIG_DYNAMIC_DEBUG) || \ |
455 | (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE)) | |
9d5059c9 LB |
456 | #include <linux/dynamic_debug.h> |
457 | ||
90c165f0 RC |
458 | /** |
459 | * pr_debug - Print a debug-level message conditionally | |
460 | * @fmt: format string | |
461 | * @...: arguments for the format string | |
462 | * | |
463 | * This macro expands to dynamic_pr_debug() if CONFIG_DYNAMIC_DEBUG is | |
464 | * set. Otherwise, if DEBUG is defined, it's equivalent to a printk with | |
465 | * KERN_DEBUG loglevel. If DEBUG is not defined it does nothing. | |
466 | * | |
467 | * It uses pr_fmt() to generate the format string (dynamic_pr_debug() uses | |
468 | * pr_fmt() internally). | |
469 | */ | |
470 | #define pr_debug(fmt, ...) \ | |
968ab183 | 471 | dynamic_pr_debug(fmt, ##__VA_ARGS__) |
b558c96f JC |
472 | #elif defined(DEBUG) |
473 | #define pr_debug(fmt, ...) \ | |
474 | printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) | |
968ab183 LT |
475 | #else |
476 | #define pr_debug(fmt, ...) \ | |
5264f2f7 | 477 | no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) |
968ab183 LT |
478 | #endif |
479 | ||
16cb839f JP |
480 | /* |
481 | * Print a one-time message (analogous to WARN_ONCE() et al): | |
482 | */ | |
483 | ||
484 | #ifdef CONFIG_PRINTK | |
c28aa1f0 | 485 | #define printk_once(fmt, ...) \ |
a358f406 | 486 | DO_ONCE_LITE(printk, fmt, ##__VA_ARGS__) |
c224815d | 487 | #define printk_deferred_once(fmt, ...) \ |
a358f406 | 488 | DO_ONCE_LITE(printk_deferred, fmt, ##__VA_ARGS__) |
16cb839f | 489 | #else |
c28aa1f0 | 490 | #define printk_once(fmt, ...) \ |
16cb839f | 491 | no_printk(fmt, ##__VA_ARGS__) |
c224815d JS |
492 | #define printk_deferred_once(fmt, ...) \ |
493 | no_printk(fmt, ##__VA_ARGS__) | |
16cb839f JP |
494 | #endif |
495 | ||
496 | #define pr_emerg_once(fmt, ...) \ | |
497 | printk_once(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__) | |
498 | #define pr_alert_once(fmt, ...) \ | |
499 | printk_once(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__) | |
500 | #define pr_crit_once(fmt, ...) \ | |
501 | printk_once(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__) | |
502 | #define pr_err_once(fmt, ...) \ | |
503 | printk_once(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) | |
504 | #define pr_warn_once(fmt, ...) \ | |
505 | printk_once(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__) | |
506 | #define pr_notice_once(fmt, ...) \ | |
507 | printk_once(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__) | |
508 | #define pr_info_once(fmt, ...) \ | |
509 | printk_once(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) | |
eb012d12 | 510 | /* no pr_cont_once, don't do that... */ |
36d308d8 MG |
511 | |
512 | #if defined(DEBUG) | |
513 | #define pr_devel_once(fmt, ...) \ | |
514 | printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) | |
515 | #else | |
516 | #define pr_devel_once(fmt, ...) \ | |
517 | no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) | |
518 | #endif | |
519 | ||
16cb839f JP |
520 | /* If you are writing a driver, please use dev_dbg instead */ |
521 | #if defined(DEBUG) | |
522 | #define pr_debug_once(fmt, ...) \ | |
523 | printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) | |
524 | #else | |
525 | #define pr_debug_once(fmt, ...) \ | |
526 | no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) | |
527 | #endif | |
528 | ||
968ab183 LT |
529 | /* |
530 | * ratelimited messages with local ratelimit_state, | |
531 | * no local ratelimit_state used in the !PRINTK case | |
532 | */ | |
533 | #ifdef CONFIG_PRINTK | |
6ec42a56 JP |
534 | #define printk_ratelimited(fmt, ...) \ |
535 | ({ \ | |
968ab183 LT |
536 | static DEFINE_RATELIMIT_STATE(_rs, \ |
537 | DEFAULT_RATELIMIT_INTERVAL, \ | |
538 | DEFAULT_RATELIMIT_BURST); \ | |
539 | \ | |
540 | if (__ratelimit(&_rs)) \ | |
541 | printk(fmt, ##__VA_ARGS__); \ | |
542 | }) | |
543 | #else | |
6ec42a56 JP |
544 | #define printk_ratelimited(fmt, ...) \ |
545 | no_printk(fmt, ##__VA_ARGS__) | |
968ab183 LT |
546 | #endif |
547 | ||
6ec42a56 | 548 | #define pr_emerg_ratelimited(fmt, ...) \ |
968ab183 | 549 | printk_ratelimited(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__) |
6ec42a56 | 550 | #define pr_alert_ratelimited(fmt, ...) \ |
968ab183 | 551 | printk_ratelimited(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__) |
6ec42a56 | 552 | #define pr_crit_ratelimited(fmt, ...) \ |
968ab183 | 553 | printk_ratelimited(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__) |
6ec42a56 | 554 | #define pr_err_ratelimited(fmt, ...) \ |
968ab183 | 555 | printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) |
6ec42a56 | 556 | #define pr_warn_ratelimited(fmt, ...) \ |
968ab183 | 557 | printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__) |
6ec42a56 | 558 | #define pr_notice_ratelimited(fmt, ...) \ |
968ab183 | 559 | printk_ratelimited(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__) |
6ec42a56 | 560 | #define pr_info_ratelimited(fmt, ...) \ |
968ab183 LT |
561 | printk_ratelimited(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) |
562 | /* no pr_cont_ratelimited, don't do that... */ | |
36d308d8 MG |
563 | |
564 | #if defined(DEBUG) | |
565 | #define pr_devel_ratelimited(fmt, ...) \ | |
566 | printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) | |
567 | #else | |
568 | #define pr_devel_ratelimited(fmt, ...) \ | |
569 | no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) | |
570 | #endif | |
571 | ||
968ab183 | 572 | /* If you are writing a driver, please use dev_dbg instead */ |
ceabef7d OZ |
573 | #if defined(CONFIG_DYNAMIC_DEBUG) || \ |
574 | (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE)) | |
29fc2bc7 JP |
575 | /* descriptor check is first to prevent flooding with "callbacks suppressed" */ |
576 | #define pr_debug_ratelimited(fmt, ...) \ | |
577 | do { \ | |
578 | static DEFINE_RATELIMIT_STATE(_rs, \ | |
579 | DEFAULT_RATELIMIT_INTERVAL, \ | |
580 | DEFAULT_RATELIMIT_BURST); \ | |
515a9adc | 581 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, pr_fmt(fmt)); \ |
a9d4ab7a | 582 | if (DYNAMIC_DEBUG_BRANCH(descriptor) && \ |
29fc2bc7 | 583 | __ratelimit(&_rs)) \ |
515a9adc | 584 | __dynamic_pr_debug(&descriptor, pr_fmt(fmt), ##__VA_ARGS__); \ |
29fc2bc7 JP |
585 | } while (0) |
586 | #elif defined(DEBUG) | |
6ec42a56 | 587 | #define pr_debug_ratelimited(fmt, ...) \ |
968ab183 LT |
588 | printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) |
589 | #else | |
590 | #define pr_debug_ratelimited(fmt, ...) \ | |
5264f2f7 | 591 | no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) |
968ab183 LT |
592 | #endif |
593 | ||
e11fea92 KS |
594 | extern const struct file_operations kmsg_fops; |
595 | ||
ac83ed68 JP |
596 | enum { |
597 | DUMP_PREFIX_NONE, | |
598 | DUMP_PREFIX_ADDRESS, | |
599 | DUMP_PREFIX_OFFSET | |
600 | }; | |
114fc1af AS |
601 | extern int hex_dump_to_buffer(const void *buf, size_t len, int rowsize, |
602 | int groupsize, char *linebuf, size_t linebuflen, | |
603 | bool ascii); | |
ac83ed68 JP |
604 | #ifdef CONFIG_PRINTK |
605 | extern void print_hex_dump(const char *level, const char *prefix_str, | |
606 | int prefix_type, int rowsize, int groupsize, | |
607 | const void *buf, size_t len, bool ascii); | |
ac83ed68 JP |
608 | #else |
609 | static inline void print_hex_dump(const char *level, const char *prefix_str, | |
610 | int prefix_type, int rowsize, int groupsize, | |
611 | const void *buf, size_t len, bool ascii) | |
612 | { | |
613 | } | |
614 | static inline void print_hex_dump_bytes(const char *prefix_str, int prefix_type, | |
615 | const void *buf, size_t len) | |
616 | { | |
617 | } | |
618 | ||
619 | #endif | |
620 | ||
ceabef7d OZ |
621 | #if defined(CONFIG_DYNAMIC_DEBUG) || \ |
622 | (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE)) | |
7a555613 VK |
623 | #define print_hex_dump_debug(prefix_str, prefix_type, rowsize, \ |
624 | groupsize, buf, len, ascii) \ | |
625 | dynamic_hex_dump(prefix_str, prefix_type, rowsize, \ | |
626 | groupsize, buf, len, ascii) | |
cdf17449 | 627 | #elif defined(DEBUG) |
7a555613 VK |
628 | #define print_hex_dump_debug(prefix_str, prefix_type, rowsize, \ |
629 | groupsize, buf, len, ascii) \ | |
630 | print_hex_dump(KERN_DEBUG, prefix_str, prefix_type, rowsize, \ | |
631 | groupsize, buf, len, ascii) | |
cdf17449 LW |
632 | #else |
633 | static inline void print_hex_dump_debug(const char *prefix_str, int prefix_type, | |
634 | int rowsize, int groupsize, | |
635 | const void *buf, size_t len, bool ascii) | |
636 | { | |
637 | } | |
638 | #endif | |
7a555613 | 639 | |
091cb099 SB |
640 | /** |
641 | * print_hex_dump_bytes - shorthand form of print_hex_dump() with default params | |
642 | * @prefix_str: string to prefix each line with; | |
643 | * caller supplies trailing spaces for alignment if desired | |
644 | * @prefix_type: controls whether prefix of an offset, address, or none | |
645 | * is printed (%DUMP_PREFIX_OFFSET, %DUMP_PREFIX_ADDRESS, %DUMP_PREFIX_NONE) | |
646 | * @buf: data blob to dump | |
647 | * @len: number of bytes in the @buf | |
648 | * | |
649 | * Calls print_hex_dump(), with log level of KERN_DEBUG, | |
650 | * rowsize of 16, groupsize of 1, and ASCII output included. | |
651 | */ | |
652 | #define print_hex_dump_bytes(prefix_str, prefix_type, buf, len) \ | |
653 | print_hex_dump_debug(prefix_str, prefix_type, 16, 1, buf, len, true) | |
654 | ||
968ab183 | 655 | #endif |