1 #ifndef __KERNEL_PRINTK__
2 #define __KERNEL_PRINTK__
4 #include <linux/init.h>
6 extern const char linux_banner[];
7 extern const char linux_proc_banner[];
9 #define KERN_EMERG "<0>" /* system is unusable */
10 #define KERN_ALERT "<1>" /* action must be taken immediately */
11 #define KERN_CRIT "<2>" /* critical conditions */
12 #define KERN_ERR "<3>" /* error conditions */
13 #define KERN_WARNING "<4>" /* warning conditions */
14 #define KERN_NOTICE "<5>" /* normal but significant condition */
15 #define KERN_INFO "<6>" /* informational */
16 #define KERN_DEBUG "<7>" /* debug-level messages */
18 /* Use the default kernel loglevel */
19 #define KERN_DEFAULT "<d>"
21 * Annotation for a "continued" line of log printout (only done after a
22 * line that had no enclosing \n). Only to be used by core/arch code
23 * during early bootup (a continued line is not SMP-safe otherwise).
25 #define KERN_CONT "<c>"
27 extern int console_printk[];
29 #define console_loglevel (console_printk[0])
30 #define default_message_loglevel (console_printk[1])
31 #define minimum_console_loglevel (console_printk[2])
32 #define default_console_loglevel (console_printk[3])
34 static inline void console_silent(void)
39 static inline void console_verbose(void)
42 console_loglevel = 15;
52 * Add this to a message where you are sure the firmware is buggy or behaves
53 * really stupid or out of spec. Be aware that the responsible BIOS developer
54 * should be able to fix this issue or at least get a concrete idea of the
55 * problem by reading your message without the need of looking at the kernel
58 * Use it for definite and high priority BIOS bugs.
61 * Use it for not that clear (e.g. could the kernel messed up things already?)
62 * and medium priority BIOS bugs.
65 * Use this one if you want to tell the user or vendor about something
66 * suspicious, but generally harmless related to the firmware.
68 * Use it for information or very low priority BIOS bugs.
70 #define FW_BUG "[Firmware Bug]: "
71 #define FW_WARN "[Firmware Warn]: "
72 #define FW_INFO "[Firmware Info]: "
76 * Add this to a message for hardware errors, so that user can report
77 * it to hardware vendor instead of LKML or software vendor.
79 #define HW_ERR "[Hardware Error]: "
82 * Dummy printk for disabled debugging statements to use whilst maintaining
83 * gcc's format and side-effect checking.
85 static inline __printf(1, 2)
86 int no_printk(const char *fmt, ...)
91 extern asmlinkage __printf(1, 2)
92 void early_printk(const char *fmt, ...);
94 extern int printk_needs_cpu(int cpu);
95 extern void printk_tick(void);
98 asmlinkage __printf(1, 0)
99 int vprintk(const char *fmt, va_list args);
100 asmlinkage __printf(1, 2) __cold
101 int printk(const char *fmt, ...);
104 * Special printk facility for scheduler use only, _DO_NOT_USE_ !
106 __printf(1, 2) __cold int printk_sched(const char *fmt, ...);
109 * Please don't use printk_ratelimit(), because it shares ratelimiting state
110 * with all other unrelated printk_ratelimit() callsites. Instead use
111 * printk_ratelimited() or plain old __ratelimit().
113 extern int __printk_ratelimit(const char *func);
114 #define printk_ratelimit() __printk_ratelimit(__func__)
115 extern bool printk_timed_ratelimit(unsigned long *caller_jiffies,
116 unsigned int interval_msec);
118 extern int printk_delay_msec;
119 extern int dmesg_restrict;
120 extern int kptr_restrict;
122 void log_buf_kexec_setup(void);
123 void __init setup_log_buf(int early);
125 static inline __printf(1, 0)
126 int vprintk(const char *s, va_list args)
130 static inline __printf(1, 2) __cold
131 int printk(const char *s, ...)
135 static inline __printf(1, 2) __cold
136 int printk_sched(const char *s, ...)
140 static inline int printk_ratelimit(void)
144 static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies,
145 unsigned int interval_msec)
150 static inline void log_buf_kexec_setup(void)
154 static inline void setup_log_buf(int early)
159 extern void dump_stack(void) __cold;
162 #define pr_fmt(fmt) fmt
165 #if defined(__KMSG_CHECKER) && defined(KMSG_COMPONENT)
167 /* generate magic string for scripts/kmsg-doc to parse */
168 #define pr_printk_hash(level, format, ...) \
169 __KMSG_PRINT(level _FMT_ format _ARGS_ #__VA_ARGS__ _END_)
171 #elif defined(CONFIG_KMSG_IDS) && defined(KMSG_COMPONENT)
173 int printk_hash(const char *, const char *, ...);
174 #define pr_printk_hash(level, format, ...) \
175 printk_hash(level KMSG_COMPONENT ".%06x" ": ", format, ##__VA_ARGS__)
177 #else /* !defined(CONFIG_KMSG_IDS) */
179 #define pr_printk_hash(level, format, ...) \
180 printk(level pr_fmt(format), ##__VA_ARGS__)
184 #define pr_emerg(fmt, ...) \
185 pr_printk_hash(KERN_EMERG, fmt, ##__VA_ARGS__)
186 #define pr_alert(fmt, ...) \
187 pr_printk_hash(KERN_ALERT, fmt, ##__VA_ARGS__)
188 #define pr_crit(fmt, ...) \
189 pr_printk_hash(KERN_CRIT, fmt, ##__VA_ARGS__)
190 #define pr_err(fmt, ...) \
191 pr_printk_hash(KERN_ERR, fmt, ##__VA_ARGS__)
192 #define pr_warning(fmt, ...) \
193 pr_printk_hash(KERN_WARNING, fmt, ##__VA_ARGS__)
194 #define pr_warn pr_warning
195 #define pr_notice(fmt, ...) \
196 pr_printk_hash(KERN_NOTICE, fmt, ##__VA_ARGS__)
197 #define pr_info(fmt, ...) \
198 pr_printk_hash(KERN_INFO, fmt, ##__VA_ARGS__)
199 #define pr_cont(fmt, ...) \
200 pr_printk_hash(KERN_CONT, fmt, ##__VA_ARGS__)
202 /* pr_devel() should produce zero code unless DEBUG is defined */
204 #define pr_devel(fmt, ...) \
205 printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
207 #define pr_devel(fmt, ...) \
208 no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
211 /* If you are writing a driver, please use dev_dbg instead */
212 #if defined(CONFIG_DYNAMIC_DEBUG)
213 /* dynamic_pr_debug() uses pr_fmt() internally so we don't need it here */
214 #define pr_debug(fmt, ...) \
215 dynamic_pr_debug(fmt, ##__VA_ARGS__)
217 #define pr_debug(fmt, ...) \
218 printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
220 #define pr_debug(fmt, ...) \
221 no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
225 * Print a one-time message (analogous to WARN_ONCE() et al):
229 #define printk_once(fmt, ...) \
231 static bool __print_once; \
233 if (!__print_once) { \
234 __print_once = true; \
235 printk(fmt, ##__VA_ARGS__); \
239 #define printk_once(fmt, ...) \
240 no_printk(fmt, ##__VA_ARGS__)
243 #define pr_emerg_once(fmt, ...) \
244 printk_once(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
245 #define pr_alert_once(fmt, ...) \
246 printk_once(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
247 #define pr_crit_once(fmt, ...) \
248 printk_once(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
249 #define pr_err_once(fmt, ...) \
250 printk_once(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
251 #define pr_warn_once(fmt, ...) \
252 printk_once(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
253 #define pr_notice_once(fmt, ...) \
254 printk_once(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
255 #define pr_info_once(fmt, ...) \
256 printk_once(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
257 #define pr_cont_once(fmt, ...) \
258 printk_once(KERN_CONT pr_fmt(fmt), ##__VA_ARGS__)
259 /* If you are writing a driver, please use dev_dbg instead */
261 #define pr_debug_once(fmt, ...) \
262 printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
264 #define pr_debug_once(fmt, ...) \
265 no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
269 * ratelimited messages with local ratelimit_state,
270 * no local ratelimit_state used in the !PRINTK case
273 #define printk_ratelimited(fmt, ...) \
275 static DEFINE_RATELIMIT_STATE(_rs, \
276 DEFAULT_RATELIMIT_INTERVAL, \
277 DEFAULT_RATELIMIT_BURST); \
279 if (__ratelimit(&_rs)) \
280 printk(fmt, ##__VA_ARGS__); \
283 #define printk_ratelimited(fmt, ...) \
284 no_printk(fmt, ##__VA_ARGS__)
287 #define pr_emerg_ratelimited(fmt, ...) \
288 printk_ratelimited(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
289 #define pr_alert_ratelimited(fmt, ...) \
290 printk_ratelimited(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
291 #define pr_crit_ratelimited(fmt, ...) \
292 printk_ratelimited(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
293 #define pr_err_ratelimited(fmt, ...) \
294 printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
295 #define pr_warn_ratelimited(fmt, ...) \
296 printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
297 #define pr_notice_ratelimited(fmt, ...) \
298 printk_ratelimited(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
299 #define pr_info_ratelimited(fmt, ...) \
300 printk_ratelimited(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
301 /* no pr_cont_ratelimited, don't do that... */
302 /* If you are writing a driver, please use dev_dbg instead */
304 #define pr_debug_ratelimited(fmt, ...) \
305 printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
307 #define pr_debug_ratelimited(fmt, ...) \
308 no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
316 extern void hex_dump_to_buffer(const void *buf, size_t len,
317 int rowsize, int groupsize,
318 char *linebuf, size_t linebuflen, bool ascii);
320 extern void print_hex_dump(const char *level, const char *prefix_str,
321 int prefix_type, int rowsize, int groupsize,
322 const void *buf, size_t len, bool ascii);
323 extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
324 const void *buf, size_t len);
326 static inline void print_hex_dump(const char *level, const char *prefix_str,
327 int prefix_type, int rowsize, int groupsize,
328 const void *buf, size_t len, bool ascii)
331 static inline void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
332 const void *buf, size_t len)