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