1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __KERNEL_PRINTK__
3 #define __KERNEL_PRINTK__
5 #include <linux/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 #include <linux/once_lite.h>
12 extern const char linux_banner[];
13 extern const char linux_proc_banner[];
15 extern int oops_in_progress; /* If set, an oops, panic(), BUG() or die() is in progress */
17 #define PRINTK_MAX_SINGLE_HEADER_LEN 2
19 static inline int printk_get_level(const char *buffer)
21 if (buffer[0] == KERN_SOH_ASCII && buffer[1]) {
24 case 'c': /* KERN_CONT */
31 static inline const char *printk_skip_level(const char *buffer)
33 if (printk_get_level(buffer))
39 static inline const char *printk_skip_headers(const char *buffer)
41 while (printk_get_level(buffer))
42 buffer = printk_skip_level(buffer);
47 #define CONSOLE_EXT_LOG_MAX 8192
49 /* printk's without a loglevel use this.. */
50 #define MESSAGE_LOGLEVEL_DEFAULT CONFIG_MESSAGE_LOGLEVEL_DEFAULT
52 /* We show everything that is MORE important than this.. */
53 #define CONSOLE_LOGLEVEL_SILENT 0 /* Mum's the word */
54 #define CONSOLE_LOGLEVEL_MIN 1 /* Minimum loglevel we let people use */
55 #define CONSOLE_LOGLEVEL_DEBUG 10 /* issue debug messages */
56 #define CONSOLE_LOGLEVEL_MOTORMOUTH 15 /* You can't shut this one up */
59 * Default used to be hard-coded at 7, quiet used to be hardcoded at 4,
60 * we're now allowing both to be set from kernel config.
62 #define CONSOLE_LOGLEVEL_DEFAULT CONFIG_CONSOLE_LOGLEVEL_DEFAULT
63 #define CONSOLE_LOGLEVEL_QUIET CONFIG_CONSOLE_LOGLEVEL_QUIET
65 extern int console_printk[];
67 #define console_loglevel (console_printk[0])
68 #define default_message_loglevel (console_printk[1])
69 #define minimum_console_loglevel (console_printk[2])
70 #define default_console_loglevel (console_printk[3])
72 extern void console_verbose(void);
74 /* strlen("ratelimit") + 1 */
75 #define DEVKMSG_STR_MAX_SIZE 10
76 extern char devkmsg_log_str[];
79 extern int suppress_printk;
88 * Add this to a message where you are sure the firmware is buggy or behaves
89 * really stupid or out of spec. Be aware that the responsible BIOS developer
90 * should be able to fix this issue or at least get a concrete idea of the
91 * problem by reading your message without the need of looking at the kernel
94 * Use it for definite and high priority BIOS bugs.
97 * Use it for not that clear (e.g. could the kernel messed up things already?)
98 * and medium priority BIOS bugs.
101 * Use this one if you want to tell the user or vendor about something
102 * suspicious, but generally harmless related to the firmware.
104 * Use it for information or very low priority BIOS bugs.
106 #define FW_BUG "[Firmware Bug]: "
107 #define FW_WARN "[Firmware Warn]: "
108 #define FW_INFO "[Firmware Info]: "
112 * Add this to a message for hardware errors, so that user can report
113 * it to hardware vendor instead of LKML or software vendor.
115 #define HW_ERR "[Hardware Error]: "
119 * Add this to a message whenever you want to warn user space about the use
120 * of a deprecated aspect of an API so they can stop using it
122 #define DEPRECATED "[Deprecated]: "
125 * Dummy printk for disabled debugging statements to use whilst maintaining
126 * gcc's format checking.
128 #define no_printk(fmt, ...) \
131 printk(fmt, ##__VA_ARGS__); \
135 #ifdef CONFIG_EARLY_PRINTK
136 extern asmlinkage __printf(1, 2)
137 void early_printk(const char *fmt, ...);
139 static inline __printf(1, 2) __cold
140 void early_printk(const char *s, ...) { }
143 struct dev_printk_info;
146 asmlinkage __printf(4, 0)
147 int vprintk_emit(int facility, int level,
148 const struct dev_printk_info *dev_info,
149 const char *fmt, va_list args);
151 asmlinkage __printf(1, 0)
152 int vprintk(const char *fmt, va_list args);
154 asmlinkage __printf(1, 2) __cold
155 int _printk(const char *fmt, ...);
158 * Special printk facility for scheduler/timekeeping use only, _DO_NOT_USE_ !
160 __printf(1, 2) __cold int _printk_deferred(const char *fmt, ...);
162 extern void __printk_safe_enter(void);
163 extern void __printk_safe_exit(void);
165 * The printk_deferred_enter/exit macros are available only as a hack for
166 * some code paths that need to defer all printk console printing. Interrupts
167 * must be disabled for the deferred duration.
169 #define printk_deferred_enter __printk_safe_enter
170 #define printk_deferred_exit __printk_safe_exit
172 extern void printk_prefer_direct_enter(void);
173 extern void printk_prefer_direct_exit(void);
175 extern bool pr_flush(int timeout_ms, bool reset_on_progress);
178 * Please don't use printk_ratelimit(), because it shares ratelimiting state
179 * with all other unrelated printk_ratelimit() callsites. Instead use
180 * printk_ratelimited() or plain old __ratelimit().
182 extern int __printk_ratelimit(const char *func);
183 #define printk_ratelimit() __printk_ratelimit(__func__)
184 extern bool printk_timed_ratelimit(unsigned long *caller_jiffies,
185 unsigned int interval_msec);
187 extern int printk_delay_msec;
188 extern int dmesg_restrict;
190 extern void wake_up_klogd(void);
192 char *log_buf_addr_get(void);
193 u32 log_buf_len_get(void);
194 void log_buf_vmcoreinfo_setup(void);
195 void __init setup_log_buf(int early);
196 __printf(1, 2) void dump_stack_set_arch_desc(const char *fmt, ...);
197 void dump_stack_print_info(const char *log_lvl);
198 void show_regs_print_info(const char *log_lvl);
199 extern asmlinkage void dump_stack_lvl(const char *log_lvl) __cold;
200 extern asmlinkage void dump_stack(void) __cold;
201 void printk_trigger_flush(void);
203 static inline __printf(1, 0)
204 int vprintk(const char *s, va_list args)
208 static inline __printf(1, 2) __cold
209 int _printk(const char *s, ...)
213 static inline __printf(1, 2) __cold
214 int _printk_deferred(const char *s, ...)
219 static inline void printk_deferred_enter(void)
223 static inline void printk_deferred_exit(void)
227 static inline void printk_prefer_direct_enter(void)
231 static inline void printk_prefer_direct_exit(void)
235 static inline bool pr_flush(int timeout_ms, bool reset_on_progress)
240 static inline int printk_ratelimit(void)
244 static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies,
245 unsigned int interval_msec)
250 static inline void wake_up_klogd(void)
254 static inline char *log_buf_addr_get(void)
259 static inline u32 log_buf_len_get(void)
264 static inline void log_buf_vmcoreinfo_setup(void)
268 static inline void setup_log_buf(int early)
272 static inline __printf(1, 2) void dump_stack_set_arch_desc(const char *fmt, ...)
276 static inline void dump_stack_print_info(const char *log_lvl)
280 static inline void show_regs_print_info(const char *log_lvl)
284 static inline void dump_stack_lvl(const char *log_lvl)
288 static inline void dump_stack(void)
291 static inline void printk_trigger_flush(void)
297 extern int __printk_cpu_sync_try_get(void);
298 extern void __printk_cpu_sync_wait(void);
299 extern void __printk_cpu_sync_put(void);
303 #define __printk_cpu_sync_try_get() true
304 #define __printk_cpu_sync_wait()
305 #define __printk_cpu_sync_put()
306 #endif /* CONFIG_SMP */
309 * printk_cpu_sync_get_irqsave() - Disable interrupts and acquire the printk
310 * cpu-reentrant spinning lock.
311 * @flags: Stack-allocated storage for saving local interrupt state,
312 * to be passed to printk_cpu_sync_put_irqrestore().
314 * If the lock is owned by another CPU, spin until it becomes available.
315 * Interrupts are restored while spinning.
317 * CAUTION: This function must be used carefully. It does not behave like a
318 * typical lock. Here are important things to watch out for...
320 * * This function is reentrant on the same CPU. Therefore the calling
321 * code must not assume exclusive access to data if code accessing the
322 * data can run reentrant or within NMI context on the same CPU.
324 * * If there exists usage of this function from NMI context, it becomes
325 * unsafe to perform any type of locking or spinning to wait for other
326 * CPUs after calling this function from any context. This includes
327 * using spinlocks or any other busy-waiting synchronization methods.
329 #define printk_cpu_sync_get_irqsave(flags) \
331 local_irq_save(flags); \
332 if (__printk_cpu_sync_try_get()) \
334 local_irq_restore(flags); \
335 __printk_cpu_sync_wait(); \
339 * printk_cpu_sync_put_irqrestore() - Release the printk cpu-reentrant spinning
340 * lock and restore interrupts.
341 * @flags: Caller's saved interrupt state, from printk_cpu_sync_get_irqsave().
343 #define printk_cpu_sync_put_irqrestore(flags) \
345 __printk_cpu_sync_put(); \
346 local_irq_restore(flags); \
349 extern int kptr_restrict;
352 * pr_fmt - used by the pr_*() macros to generate the printk format string
353 * @fmt: format string passed from a pr_*() macro
355 * This macro can be used to generate a unified format string for pr_*()
356 * macros. A common use is to prefix all pr_*() messages in a file with a common
357 * string. For example, defining this at the top of a source file:
359 * #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
361 * would prefix all pr_info, pr_emerg... messages in the file with the module
365 #define pr_fmt(fmt) fmt
370 #ifdef CONFIG_PRINTK_INDEX
378 * While printk and pr_* have the level stored in the string at compile
379 * time, some subsystems dynamically add it at runtime through the
380 * format string. For these dynamic cases, we allow the subsystem to
381 * tell us the level at compile time.
383 * NULL indicates that the level, if any, is stored in fmt.
388 * The format string used by various subsystem specific printk()
389 * wrappers to prefix the message.
391 * Note that the static prefix defined by the pr_fmt() macro is stored
392 * directly in the message format (@fmt), not here.
394 const char *subsys_fmt_prefix;
397 #define __printk_index_emit(_fmt, _level, _subsys_fmt_prefix) \
399 if (__builtin_constant_p(_fmt) && __builtin_constant_p(_level)) { \
401 * We check __builtin_constant_p multiple times here
402 * for the same input because GCC will produce an error
403 * if we try to assign a static variable to fmt if it
404 * is not a constant, even with the outer if statement.
406 static const struct pi_entry _entry \
408 .fmt = __builtin_constant_p(_fmt) ? (_fmt) : NULL, \
412 .level = __builtin_constant_p(_level) ? (_level) : NULL, \
413 .subsys_fmt_prefix = _subsys_fmt_prefix,\
415 static const struct pi_entry *_entry_ptr \
416 __used __section(".printk_index") = &_entry; \
420 #else /* !CONFIG_PRINTK_INDEX */
421 #define __printk_index_emit(...) do {} while (0)
422 #endif /* CONFIG_PRINTK_INDEX */
425 * Some subsystems have their own custom printk that applies a va_format to a
426 * generic format, for example, to include a device number or other metadata
427 * alongside the format supplied by the caller.
429 * In order to store these in the way they would be emitted by the printk
430 * infrastructure, the subsystem provides us with the start, fixed string, and
431 * any subsequent text in the format string.
433 * We take a variable argument list as pr_fmt/dev_fmt/etc are sometimes passed
434 * as multiple arguments (eg: `"%s: ", "blah"`), and we must only take the
437 * subsys_fmt_prefix must be known at compile time, or compilation will fail
438 * (since this is a mistake). If fmt or level is not known at compile time, no
439 * index entry will be made (since this can legitimately happen).
441 #define printk_index_subsys_emit(subsys_fmt_prefix, level, fmt, ...) \
442 __printk_index_emit(fmt, level, subsys_fmt_prefix)
444 #define printk_index_wrap(_p_func, _fmt, ...) \
446 __printk_index_emit(_fmt, NULL, NULL); \
447 _p_func(_fmt, ##__VA_ARGS__); \
452 * printk - print a kernel message
453 * @fmt: format string
455 * This is printk(). It can be called from any context. We want it to work.
457 * If printk indexing is enabled, _printk() is called from printk_index_wrap.
458 * Otherwise, printk is simply #defined to _printk.
460 * We try to grab the console_lock. If we succeed, it's easy - we log the
461 * output and call the console drivers. If we fail to get the semaphore, we
462 * place the output into the log buffer and return. The current holder of
463 * the console_sem will notice the new output in console_unlock(); and will
464 * send it to the consoles before releasing the lock.
466 * One effect of this deferred printing is that code which calls printk() and
467 * then changes console_loglevel may break. This is because console_loglevel
468 * is inspected when the actual printing occurs.
473 * See the vsnprintf() documentation for format string extensions over C99.
475 #define printk(fmt, ...) printk_index_wrap(_printk, fmt, ##__VA_ARGS__)
476 #define printk_deferred(fmt, ...) \
477 printk_index_wrap(_printk_deferred, fmt, ##__VA_ARGS__)
480 * pr_emerg - Print an emergency-level message
481 * @fmt: format string
482 * @...: arguments for the format string
484 * This macro expands to a printk with KERN_EMERG loglevel. It uses pr_fmt() to
485 * generate the format string.
487 #define pr_emerg(fmt, ...) \
488 printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
490 * pr_alert - Print an alert-level message
491 * @fmt: format string
492 * @...: arguments for the format string
494 * This macro expands to a printk with KERN_ALERT loglevel. It uses pr_fmt() to
495 * generate the format string.
497 #define pr_alert(fmt, ...) \
498 printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
500 * pr_crit - Print a critical-level message
501 * @fmt: format string
502 * @...: arguments for the format string
504 * This macro expands to a printk with KERN_CRIT loglevel. It uses pr_fmt() to
505 * generate the format string.
507 #define pr_crit(fmt, ...) \
508 printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
510 * pr_err - Print an error-level message
511 * @fmt: format string
512 * @...: arguments for the format string
514 * This macro expands to a printk with KERN_ERR loglevel. It uses pr_fmt() to
515 * generate the format string.
517 #define pr_err(fmt, ...) \
518 printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
520 * pr_warn - Print a warning-level message
521 * @fmt: format string
522 * @...: arguments for the format string
524 * This macro expands to a printk with KERN_WARNING loglevel. It uses pr_fmt()
525 * to generate the format string.
527 #define pr_warn(fmt, ...) \
528 printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
530 * pr_notice - Print a notice-level message
531 * @fmt: format string
532 * @...: arguments for the format string
534 * This macro expands to a printk with KERN_NOTICE loglevel. It uses pr_fmt() to
535 * generate the format string.
537 #define pr_notice(fmt, ...) \
538 printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
540 * pr_info - Print an info-level message
541 * @fmt: format string
542 * @...: arguments for the format string
544 * This macro expands to a printk with KERN_INFO loglevel. It uses pr_fmt() to
545 * generate the format string.
547 #define pr_info(fmt, ...) \
548 printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
551 * pr_cont - Continues a previous log message in the same line.
552 * @fmt: format string
553 * @...: arguments for the format string
555 * This macro expands to a printk with KERN_CONT loglevel. It should only be
556 * used when continuing a log message with no newline ('\n') enclosed. Otherwise
557 * it defaults back to KERN_DEFAULT loglevel.
559 #define pr_cont(fmt, ...) \
560 printk(KERN_CONT fmt, ##__VA_ARGS__)
563 * pr_devel - Print a debug-level message conditionally
564 * @fmt: format string
565 * @...: arguments for the format string
567 * This macro expands to a printk with KERN_DEBUG loglevel if DEBUG is
568 * defined. Otherwise it does nothing.
570 * It uses pr_fmt() to generate the format string.
573 #define pr_devel(fmt, ...) \
574 printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
576 #define pr_devel(fmt, ...) \
577 no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
581 /* If you are writing a driver, please use dev_dbg instead */
582 #if defined(CONFIG_DYNAMIC_DEBUG) || \
583 (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
584 #include <linux/dynamic_debug.h>
587 * pr_debug - Print a debug-level message conditionally
588 * @fmt: format string
589 * @...: arguments for the format string
591 * This macro expands to dynamic_pr_debug() if CONFIG_DYNAMIC_DEBUG is
592 * set. Otherwise, if DEBUG is defined, it's equivalent to a printk with
593 * KERN_DEBUG loglevel. If DEBUG is not defined it does nothing.
595 * It uses pr_fmt() to generate the format string (dynamic_pr_debug() uses
596 * pr_fmt() internally).
598 #define pr_debug(fmt, ...) \
599 dynamic_pr_debug(fmt, ##__VA_ARGS__)
601 #define pr_debug(fmt, ...) \
602 printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
604 #define pr_debug(fmt, ...) \
605 no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
609 * Print a one-time message (analogous to WARN_ONCE() et al):
613 #define printk_once(fmt, ...) \
614 DO_ONCE_LITE(printk, fmt, ##__VA_ARGS__)
615 #define printk_deferred_once(fmt, ...) \
616 DO_ONCE_LITE(printk_deferred, fmt, ##__VA_ARGS__)
618 #define printk_once(fmt, ...) \
619 no_printk(fmt, ##__VA_ARGS__)
620 #define printk_deferred_once(fmt, ...) \
621 no_printk(fmt, ##__VA_ARGS__)
624 #define pr_emerg_once(fmt, ...) \
625 printk_once(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
626 #define pr_alert_once(fmt, ...) \
627 printk_once(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
628 #define pr_crit_once(fmt, ...) \
629 printk_once(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
630 #define pr_err_once(fmt, ...) \
631 printk_once(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
632 #define pr_warn_once(fmt, ...) \
633 printk_once(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
634 #define pr_notice_once(fmt, ...) \
635 printk_once(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
636 #define pr_info_once(fmt, ...) \
637 printk_once(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
638 /* no pr_cont_once, don't do that... */
641 #define pr_devel_once(fmt, ...) \
642 printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
644 #define pr_devel_once(fmt, ...) \
645 no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
648 /* If you are writing a driver, please use dev_dbg instead */
650 #define pr_debug_once(fmt, ...) \
651 printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
653 #define pr_debug_once(fmt, ...) \
654 no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
658 * ratelimited messages with local ratelimit_state,
659 * no local ratelimit_state used in the !PRINTK case
662 #define printk_ratelimited(fmt, ...) \
664 static DEFINE_RATELIMIT_STATE(_rs, \
665 DEFAULT_RATELIMIT_INTERVAL, \
666 DEFAULT_RATELIMIT_BURST); \
668 if (__ratelimit(&_rs)) \
669 printk(fmt, ##__VA_ARGS__); \
672 #define printk_ratelimited(fmt, ...) \
673 no_printk(fmt, ##__VA_ARGS__)
676 #define pr_emerg_ratelimited(fmt, ...) \
677 printk_ratelimited(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
678 #define pr_alert_ratelimited(fmt, ...) \
679 printk_ratelimited(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
680 #define pr_crit_ratelimited(fmt, ...) \
681 printk_ratelimited(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
682 #define pr_err_ratelimited(fmt, ...) \
683 printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
684 #define pr_warn_ratelimited(fmt, ...) \
685 printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
686 #define pr_notice_ratelimited(fmt, ...) \
687 printk_ratelimited(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
688 #define pr_info_ratelimited(fmt, ...) \
689 printk_ratelimited(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
690 /* no pr_cont_ratelimited, don't do that... */
693 #define pr_devel_ratelimited(fmt, ...) \
694 printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
696 #define pr_devel_ratelimited(fmt, ...) \
697 no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
700 /* If you are writing a driver, please use dev_dbg instead */
701 #if defined(CONFIG_DYNAMIC_DEBUG) || \
702 (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
703 /* descriptor check is first to prevent flooding with "callbacks suppressed" */
704 #define pr_debug_ratelimited(fmt, ...) \
706 static DEFINE_RATELIMIT_STATE(_rs, \
707 DEFAULT_RATELIMIT_INTERVAL, \
708 DEFAULT_RATELIMIT_BURST); \
709 DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, pr_fmt(fmt)); \
710 if (DYNAMIC_DEBUG_BRANCH(descriptor) && \
712 __dynamic_pr_debug(&descriptor, pr_fmt(fmt), ##__VA_ARGS__); \
715 #define pr_debug_ratelimited(fmt, ...) \
716 printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
718 #define pr_debug_ratelimited(fmt, ...) \
719 no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
722 extern const struct file_operations kmsg_fops;
729 extern int hex_dump_to_buffer(const void *buf, size_t len, int rowsize,
730 int groupsize, char *linebuf, size_t linebuflen,
733 extern void print_hex_dump(const char *level, const char *prefix_str,
734 int prefix_type, int rowsize, int groupsize,
735 const void *buf, size_t len, bool ascii);
737 static inline void print_hex_dump(const char *level, const char *prefix_str,
738 int prefix_type, int rowsize, int groupsize,
739 const void *buf, size_t len, bool ascii)
742 static inline void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
743 const void *buf, size_t len)
749 #if defined(CONFIG_DYNAMIC_DEBUG) || \
750 (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
751 #define print_hex_dump_debug(prefix_str, prefix_type, rowsize, \
752 groupsize, buf, len, ascii) \
753 dynamic_hex_dump(prefix_str, prefix_type, rowsize, \
754 groupsize, buf, len, ascii)
756 #define print_hex_dump_debug(prefix_str, prefix_type, rowsize, \
757 groupsize, buf, len, ascii) \
758 print_hex_dump(KERN_DEBUG, prefix_str, prefix_type, rowsize, \
759 groupsize, buf, len, ascii)
761 static inline void print_hex_dump_debug(const char *prefix_str, int prefix_type,
762 int rowsize, int groupsize,
763 const void *buf, size_t len, bool ascii)
769 * print_hex_dump_bytes - shorthand form of print_hex_dump() with default params
770 * @prefix_str: string to prefix each line with;
771 * caller supplies trailing spaces for alignment if desired
772 * @prefix_type: controls whether prefix of an offset, address, or none
773 * is printed (%DUMP_PREFIX_OFFSET, %DUMP_PREFIX_ADDRESS, %DUMP_PREFIX_NONE)
774 * @buf: data blob to dump
775 * @len: number of bytes in the @buf
777 * Calls print_hex_dump(), with log level of KERN_DEBUG,
778 * rowsize of 16, groupsize of 1, and ASCII output included.
780 #define print_hex_dump_bytes(prefix_str, prefix_type, buf, len) \
781 print_hex_dump_debug(prefix_str, prefix_type, 16, 1, buf, len, true)