include/linux/printk.h

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