1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __KERNEL_PRINTK__
3 #define __KERNEL_PRINTK__
6 #include <linux/init.h>
7 #include <linux/kern_levels.h>
8 #include <linux/linkage.h>
9 #include <linux/cache.h>
10 #include <linux/ratelimit_types.h>
11 #include <linux/once_lite.h>
13 extern const char linux_banner[];
14 extern const char linux_proc_banner[];
16 extern int oops_in_progress; /* If set, an oops, panic(), BUG() or die() is in progress */
18 #define PRINTK_MAX_SINGLE_HEADER_LEN 2
20 static inline int printk_get_level(const char *buffer)
22 if (buffer[0] == KERN_SOH_ASCII && buffer[1]) {
25 case 'c': /* KERN_CONT */
32 static inline const char *printk_skip_level(const char *buffer)
34 if (printk_get_level(buffer))
40 static inline const char *printk_skip_headers(const char *buffer)
42 while (printk_get_level(buffer))
43 buffer = printk_skip_level(buffer);
48 #define CONSOLE_EXT_LOG_MAX 8192
50 /* printk's without a loglevel use this.. */
51 #define MESSAGE_LOGLEVEL_DEFAULT CONFIG_MESSAGE_LOGLEVEL_DEFAULT
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 */
56 #define CONSOLE_LOGLEVEL_DEBUG 10 /* issue debug messages */
57 #define CONSOLE_LOGLEVEL_MOTORMOUTH 15 /* You can't shut this one up */
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.
63 #define CONSOLE_LOGLEVEL_DEFAULT CONFIG_CONSOLE_LOGLEVEL_DEFAULT
64 #define CONSOLE_LOGLEVEL_QUIET CONFIG_CONSOLE_LOGLEVEL_QUIET
66 extern int console_printk[];
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])
73 static inline void console_silent(void)
75 console_loglevel = CONSOLE_LOGLEVEL_SILENT;
78 static inline void console_verbose(void)
81 console_loglevel = CONSOLE_LOGLEVEL_MOTORMOUTH;
84 /* strlen("ratelimit") + 1 */
85 #define DEVKMSG_STR_MAX_SIZE 10
86 extern char devkmsg_log_str[];
89 extern int suppress_printk;
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
104 * Use it for definite and high priority BIOS bugs.
107 * Use it for not that clear (e.g. could the kernel messed up things already?)
108 * and medium priority BIOS bugs.
111 * Use this one if you want to tell the user or vendor about something
112 * suspicious, but generally harmless related to the firmware.
114 * Use it for information or very low priority BIOS bugs.
116 #define FW_BUG "[Firmware Bug]: "
117 #define FW_WARN "[Firmware Warn]: "
118 #define FW_INFO "[Firmware Info]: "
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.
125 #define HW_ERR "[Hardware Error]: "
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
132 #define DEPRECATED "[Deprecated]: "
135 * Dummy printk for disabled debugging statements to use whilst maintaining
136 * gcc's format checking.
138 #define no_printk(fmt, ...) \
141 printk(fmt, ##__VA_ARGS__); \
145 #ifdef CONFIG_EARLY_PRINTK
146 extern asmlinkage __printf(1, 2)
147 void early_printk(const char *fmt, ...);
149 static inline __printf(1, 2) __cold
150 void early_printk(const char *s, ...) { }
153 #ifdef CONFIG_PRINTK_NMI
154 extern void printk_nmi_enter(void);
155 extern void printk_nmi_exit(void);
156 extern void printk_nmi_direct_enter(void);
157 extern void printk_nmi_direct_exit(void);
159 static inline void printk_nmi_enter(void) { }
160 static inline void printk_nmi_exit(void) { }
161 static inline void printk_nmi_direct_enter(void) { }
162 static inline void printk_nmi_direct_exit(void) { }
163 #endif /* PRINTK_NMI */
165 struct dev_printk_info;
168 asmlinkage __printf(4, 0)
169 int vprintk_emit(int facility, int level,
170 const struct dev_printk_info *dev_info,
171 const char *fmt, va_list args);
173 asmlinkage __printf(1, 0)
174 int vprintk(const char *fmt, va_list args);
176 asmlinkage __printf(1, 2) __cold
177 int _printk(const char *fmt, ...);
180 * Special printk facility for scheduler/timekeeping use only, _DO_NOT_USE_ !
182 __printf(1, 2) __cold int _printk_deferred(const char *fmt, ...);
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().
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);
194 extern int printk_delay_msec;
195 extern int dmesg_restrict;
198 devkmsg_sysctl_set_loglvl(struct ctl_table *table, int write, void *buf,
199 size_t *lenp, loff_t *ppos);
201 extern void wake_up_klogd(void);
203 char *log_buf_addr_get(void);
204 u32 log_buf_len_get(void);
205 void log_buf_vmcoreinfo_setup(void);
206 void __init setup_log_buf(int early);
207 __printf(1, 2) void dump_stack_set_arch_desc(const char *fmt, ...);
208 void dump_stack_print_info(const char *log_lvl);
209 void show_regs_print_info(const char *log_lvl);
210 extern asmlinkage void dump_stack_lvl(const char *log_lvl) __cold;
211 extern asmlinkage void dump_stack(void) __cold;
212 extern void printk_safe_flush(void);
213 extern void printk_safe_flush_on_panic(void);
215 static inline __printf(1, 0)
216 int vprintk(const char *s, va_list args)
220 static inline __printf(1, 2) __cold
221 int _printk(const char *s, ...)
225 static inline __printf(1, 2) __cold
226 int _printk_deferred(const char *s, ...)
230 static inline int printk_ratelimit(void)
234 static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies,
235 unsigned int interval_msec)
240 static inline void wake_up_klogd(void)
244 static inline char *log_buf_addr_get(void)
249 static inline u32 log_buf_len_get(void)
254 static inline void log_buf_vmcoreinfo_setup(void)
258 static inline void setup_log_buf(int early)
262 static inline __printf(1, 2) void dump_stack_set_arch_desc(const char *fmt, ...)
266 static inline void dump_stack_print_info(const char *log_lvl)
270 static inline void show_regs_print_info(const char *log_lvl)
274 static inline void dump_stack_lvl(const char *log_lvl)
278 static inline void dump_stack(void)
282 static inline void printk_safe_flush(void)
286 static inline void printk_safe_flush_on_panic(void)
292 extern int __printk_cpu_trylock(void);
293 extern void __printk_wait_on_cpu_lock(void);
294 extern void __printk_cpu_unlock(void);
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().
302 * If the lock is owned by another CPU, spin until it becomes available.
303 * Interrupts are restored while spinning.
305 #define printk_cpu_lock_irqsave(flags) \
307 local_irq_save(flags); \
308 if (__printk_cpu_trylock()) \
310 local_irq_restore(flags); \
311 __printk_wait_on_cpu_lock(); \
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().
319 #define printk_cpu_unlock_irqrestore(flags) \
321 __printk_cpu_unlock(); \
322 local_irq_restore(flags); \
327 #define printk_cpu_lock_irqsave(flags) ((void)flags)
328 #define printk_cpu_unlock_irqrestore(flags) ((void)flags)
330 #endif /* CONFIG_SMP */
332 extern int kptr_restrict;
335 * pr_fmt - used by the pr_*() macros to generate the printk format string
336 * @fmt: format string passed from a pr_*() macro
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:
342 * #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
344 * would prefix all pr_info, pr_emerg... messages in the file with the module
348 #define pr_fmt(fmt) fmt
353 #ifdef CONFIG_PRINTK_INDEX
361 * While printk and pr_* have the level stored in the string at compile
362 * time, some subsystems dynamically add it at runtime through the
363 * format string. For these dynamic cases, we allow the subsystem to
364 * tell us the level at compile time.
366 * NULL indicates that the level, if any, is stored in fmt.
371 * The format string used by various subsystem specific printk()
372 * wrappers to prefix the message.
374 * Note that the static prefix defined by the pr_fmt() macro is stored
375 * directly in the message format (@fmt), not here.
377 const char *subsys_fmt_prefix;
380 #define __printk_index_emit(_fmt, _level, _subsys_fmt_prefix) \
382 if (__builtin_constant_p(_fmt) && __builtin_constant_p(_level)) { \
384 * We check __builtin_constant_p multiple times here
385 * for the same input because GCC will produce an error
386 * if we try to assign a static variable to fmt if it
387 * is not a constant, even with the outer if statement.
389 static const struct pi_entry _entry \
391 .fmt = __builtin_constant_p(_fmt) ? (_fmt) : NULL, \
395 .level = __builtin_constant_p(_level) ? (_level) : NULL, \
396 .subsys_fmt_prefix = _subsys_fmt_prefix,\
398 static const struct pi_entry *_entry_ptr \
399 __used __section(".printk_index") = &_entry; \
403 #else /* !CONFIG_PRINTK_INDEX */
404 #define __printk_index_emit(...) do {} while (0)
405 #endif /* CONFIG_PRINTK_INDEX */
408 * Some subsystems have their own custom printk that applies a va_format to a
409 * generic format, for example, to include a device number or other metadata
410 * alongside the format supplied by the caller.
412 * In order to store these in the way they would be emitted by the printk
413 * infrastructure, the subsystem provides us with the start, fixed string, and
414 * any subsequent text in the format string.
416 * We take a variable argument list as pr_fmt/dev_fmt/etc are sometimes passed
417 * as multiple arguments (eg: `"%s: ", "blah"`), and we must only take the
420 * subsys_fmt_prefix must be known at compile time, or compilation will fail
421 * (since this is a mistake). If fmt or level is not known at compile time, no
422 * index entry will be made (since this can legitimately happen).
424 #define printk_index_subsys_emit(subsys_fmt_prefix, level, fmt, ...) \
425 __printk_index_emit(fmt, level, subsys_fmt_prefix)
427 #define printk_index_wrap(_p_func, _fmt, ...) \
429 __printk_index_emit(_fmt, NULL, NULL); \
430 _p_func(_fmt, ##__VA_ARGS__); \
435 * printk - print a kernel message
436 * @fmt: format string
438 * This is printk(). It can be called from any context. We want it to work.
440 * If printk indexing is enabled, _printk() is called from printk_index_wrap.
441 * Otherwise, printk is simply #defined to _printk.
443 * We try to grab the console_lock. If we succeed, it's easy - we log the
444 * output and call the console drivers. If we fail to get the semaphore, we
445 * place the output into the log buffer and return. The current holder of
446 * the console_sem will notice the new output in console_unlock(); and will
447 * send it to the consoles before releasing the lock.
449 * One effect of this deferred printing is that code which calls printk() and
450 * then changes console_loglevel may break. This is because console_loglevel
451 * is inspected when the actual printing occurs.
456 * See the vsnprintf() documentation for format string extensions over C99.
458 #define printk(fmt, ...) printk_index_wrap(_printk, fmt, ##__VA_ARGS__)
459 #define printk_deferred(fmt, ...) \
460 printk_index_wrap(_printk_deferred, fmt, ##__VA_ARGS__)
463 * pr_emerg - Print an emergency-level message
464 * @fmt: format string
465 * @...: arguments for the format string
467 * This macro expands to a printk with KERN_EMERG loglevel. It uses pr_fmt() to
468 * generate the format string.
470 #define pr_emerg(fmt, ...) \
471 printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
473 * pr_alert - Print an alert-level message
474 * @fmt: format string
475 * @...: arguments for the format string
477 * This macro expands to a printk with KERN_ALERT loglevel. It uses pr_fmt() to
478 * generate the format string.
480 #define pr_alert(fmt, ...) \
481 printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
483 * pr_crit - Print a critical-level message
484 * @fmt: format string
485 * @...: arguments for the format string
487 * This macro expands to a printk with KERN_CRIT loglevel. It uses pr_fmt() to
488 * generate the format string.
490 #define pr_crit(fmt, ...) \
491 printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
493 * pr_err - Print an error-level message
494 * @fmt: format string
495 * @...: arguments for the format string
497 * This macro expands to a printk with KERN_ERR loglevel. It uses pr_fmt() to
498 * generate the format string.
500 #define pr_err(fmt, ...) \
501 printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
503 * pr_warn - Print a warning-level message
504 * @fmt: format string
505 * @...: arguments for the format string
507 * This macro expands to a printk with KERN_WARNING loglevel. It uses pr_fmt()
508 * to generate the format string.
510 #define pr_warn(fmt, ...) \
511 printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
513 * pr_notice - Print a notice-level message
514 * @fmt: format string
515 * @...: arguments for the format string
517 * This macro expands to a printk with KERN_NOTICE loglevel. It uses pr_fmt() to
518 * generate the format string.
520 #define pr_notice(fmt, ...) \
521 printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
523 * pr_info - Print an info-level message
524 * @fmt: format string
525 * @...: arguments for the format string
527 * This macro expands to a printk with KERN_INFO loglevel. It uses pr_fmt() to
528 * generate the format string.
530 #define pr_info(fmt, ...) \
531 printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
534 * pr_cont - Continues a previous log message in the same line.
535 * @fmt: format string
536 * @...: arguments for the format string
538 * This macro expands to a printk with KERN_CONT loglevel. It should only be
539 * used when continuing a log message with no newline ('\n') enclosed. Otherwise
540 * it defaults back to KERN_DEFAULT loglevel.
542 #define pr_cont(fmt, ...) \
543 printk(KERN_CONT fmt, ##__VA_ARGS__)
546 * pr_devel - Print a debug-level message conditionally
547 * @fmt: format string
548 * @...: arguments for the format string
550 * This macro expands to a printk with KERN_DEBUG loglevel if DEBUG is
551 * defined. Otherwise it does nothing.
553 * It uses pr_fmt() to generate the format string.
556 #define pr_devel(fmt, ...) \
557 printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
559 #define pr_devel(fmt, ...) \
560 no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
564 /* If you are writing a driver, please use dev_dbg instead */
565 #if defined(CONFIG_DYNAMIC_DEBUG) || \
566 (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
567 #include <linux/dynamic_debug.h>
570 * pr_debug - Print a debug-level message conditionally
571 * @fmt: format string
572 * @...: arguments for the format string
574 * This macro expands to dynamic_pr_debug() if CONFIG_DYNAMIC_DEBUG is
575 * set. Otherwise, if DEBUG is defined, it's equivalent to a printk with
576 * KERN_DEBUG loglevel. If DEBUG is not defined it does nothing.
578 * It uses pr_fmt() to generate the format string (dynamic_pr_debug() uses
579 * pr_fmt() internally).
581 #define pr_debug(fmt, ...) \
582 dynamic_pr_debug(fmt, ##__VA_ARGS__)
584 #define pr_debug(fmt, ...) \
585 printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
587 #define pr_debug(fmt, ...) \
588 no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
592 * Print a one-time message (analogous to WARN_ONCE() et al):
596 #define printk_once(fmt, ...) \
597 DO_ONCE_LITE(printk, fmt, ##__VA_ARGS__)
598 #define printk_deferred_once(fmt, ...) \
599 DO_ONCE_LITE(printk_deferred, fmt, ##__VA_ARGS__)
601 #define printk_once(fmt, ...) \
602 no_printk(fmt, ##__VA_ARGS__)
603 #define printk_deferred_once(fmt, ...) \
604 no_printk(fmt, ##__VA_ARGS__)
607 #define pr_emerg_once(fmt, ...) \
608 printk_once(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
609 #define pr_alert_once(fmt, ...) \
610 printk_once(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
611 #define pr_crit_once(fmt, ...) \
612 printk_once(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
613 #define pr_err_once(fmt, ...) \
614 printk_once(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
615 #define pr_warn_once(fmt, ...) \
616 printk_once(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
617 #define pr_notice_once(fmt, ...) \
618 printk_once(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
619 #define pr_info_once(fmt, ...) \
620 printk_once(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
621 /* no pr_cont_once, don't do that... */
624 #define pr_devel_once(fmt, ...) \
625 printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
627 #define pr_devel_once(fmt, ...) \
628 no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
631 /* If you are writing a driver, please use dev_dbg instead */
633 #define pr_debug_once(fmt, ...) \
634 printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
636 #define pr_debug_once(fmt, ...) \
637 no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
641 * ratelimited messages with local ratelimit_state,
642 * no local ratelimit_state used in the !PRINTK case
645 #define printk_ratelimited(fmt, ...) \
647 static DEFINE_RATELIMIT_STATE(_rs, \
648 DEFAULT_RATELIMIT_INTERVAL, \
649 DEFAULT_RATELIMIT_BURST); \
651 if (__ratelimit(&_rs)) \
652 printk(fmt, ##__VA_ARGS__); \
655 #define printk_ratelimited(fmt, ...) \
656 no_printk(fmt, ##__VA_ARGS__)
659 #define pr_emerg_ratelimited(fmt, ...) \
660 printk_ratelimited(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
661 #define pr_alert_ratelimited(fmt, ...) \
662 printk_ratelimited(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
663 #define pr_crit_ratelimited(fmt, ...) \
664 printk_ratelimited(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
665 #define pr_err_ratelimited(fmt, ...) \
666 printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
667 #define pr_warn_ratelimited(fmt, ...) \
668 printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
669 #define pr_notice_ratelimited(fmt, ...) \
670 printk_ratelimited(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
671 #define pr_info_ratelimited(fmt, ...) \
672 printk_ratelimited(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
673 /* no pr_cont_ratelimited, don't do that... */
676 #define pr_devel_ratelimited(fmt, ...) \
677 printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
679 #define pr_devel_ratelimited(fmt, ...) \
680 no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
683 /* If you are writing a driver, please use dev_dbg instead */
684 #if defined(CONFIG_DYNAMIC_DEBUG) || \
685 (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
686 /* descriptor check is first to prevent flooding with "callbacks suppressed" */
687 #define pr_debug_ratelimited(fmt, ...) \
689 static DEFINE_RATELIMIT_STATE(_rs, \
690 DEFAULT_RATELIMIT_INTERVAL, \
691 DEFAULT_RATELIMIT_BURST); \
692 DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, pr_fmt(fmt)); \
693 if (DYNAMIC_DEBUG_BRANCH(descriptor) && \
695 __dynamic_pr_debug(&descriptor, pr_fmt(fmt), ##__VA_ARGS__); \
698 #define pr_debug_ratelimited(fmt, ...) \
699 printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
701 #define pr_debug_ratelimited(fmt, ...) \
702 no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
705 extern const struct file_operations kmsg_fops;
712 extern int hex_dump_to_buffer(const void *buf, size_t len, int rowsize,
713 int groupsize, char *linebuf, size_t linebuflen,
716 extern void print_hex_dump(const char *level, const char *prefix_str,
717 int prefix_type, int rowsize, int groupsize,
718 const void *buf, size_t len, bool ascii);
720 static inline void print_hex_dump(const char *level, const char *prefix_str,
721 int prefix_type, int rowsize, int groupsize,
722 const void *buf, size_t len, bool ascii)
725 static inline void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
726 const void *buf, size_t len)
732 #if defined(CONFIG_DYNAMIC_DEBUG) || \
733 (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
734 #define print_hex_dump_debug(prefix_str, prefix_type, rowsize, \
735 groupsize, buf, len, ascii) \
736 dynamic_hex_dump(prefix_str, prefix_type, rowsize, \
737 groupsize, buf, len, ascii)
739 #define print_hex_dump_debug(prefix_str, prefix_type, rowsize, \
740 groupsize, buf, len, ascii) \
741 print_hex_dump(KERN_DEBUG, prefix_str, prefix_type, rowsize, \
742 groupsize, buf, len, ascii)
744 static inline void print_hex_dump_debug(const char *prefix_str, int prefix_type,
745 int rowsize, int groupsize,
746 const void *buf, size_t len, bool ascii)
752 * print_hex_dump_bytes - shorthand form of print_hex_dump() with default params
753 * @prefix_str: string to prefix each line with;
754 * caller supplies trailing spaces for alignment if desired
755 * @prefix_type: controls whether prefix of an offset, address, or none
756 * is printed (%DUMP_PREFIX_OFFSET, %DUMP_PREFIX_ADDRESS, %DUMP_PREFIX_NONE)
757 * @buf: data blob to dump
758 * @len: number of bytes in the @buf
760 * Calls print_hex_dump(), with log level of KERN_DEBUG,
761 * rowsize of 16, groupsize of 1, and ASCII output included.
763 #define print_hex_dump_bytes(prefix_str, prefix_type, buf, len) \
764 print_hex_dump_debug(prefix_str, prefix_type, 16, 1, buf, len, true)