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 * Please don't use printk_ratelimit(), because it shares ratelimiting state
105 * with all other unrelated printk_ratelimit() callsites. Instead use
106 * printk_ratelimited() or plain old __ratelimit().
108 extern int __printk_ratelimit(const char *func
);
109 #define printk_ratelimit() __printk_ratelimit(__func__)
110 extern bool printk_timed_ratelimit(unsigned long *caller_jiffies
,
111 unsigned int interval_msec
);
113 extern int printk_delay_msec
;
114 extern int dmesg_restrict
;
115 extern int kptr_restrict
;
117 void log_buf_kexec_setup(void);
118 void __init
setup_log_buf(int early
);
120 static inline __printf(1, 0)
121 int vprintk(const char *s
, va_list args
)
125 static inline __printf(1, 2) __cold
126 int printk(const char *s
, ...)
130 static inline int printk_ratelimit(void)
134 static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies
,
135 unsigned int interval_msec
)
140 static inline void log_buf_kexec_setup(void)
144 static inline void setup_log_buf(int early
)
149 extern void dump_stack(void) __cold
;
152 #define pr_fmt(fmt) fmt
155 #define pr_emerg(fmt, ...) \
156 printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
157 #define pr_alert(fmt, ...) \
158 printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
159 #define pr_crit(fmt, ...) \
160 printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
161 #define pr_err(fmt, ...) \
162 printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
163 #define pr_warning(fmt, ...) \
164 printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
165 #define pr_warn pr_warning
166 #define pr_notice(fmt, ...) \
167 printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
168 #define pr_info(fmt, ...) \
169 printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
170 #define pr_cont(fmt, ...) \
171 printk(KERN_CONT fmt, ##__VA_ARGS__)
173 /* pr_devel() should produce zero code unless DEBUG is defined */
175 #define pr_devel(fmt, ...) \
176 printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
178 #define pr_devel(fmt, ...) \
179 no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
182 /* If you are writing a driver, please use dev_dbg instead */
184 #define pr_debug(fmt, ...) \
185 printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
186 #elif defined(CONFIG_DYNAMIC_DEBUG)
187 /* dynamic_pr_debug() uses pr_fmt() internally so we don't need it here */
188 #define pr_debug(fmt, ...) \
189 dynamic_pr_debug(fmt, ##__VA_ARGS__)
191 #define pr_debug(fmt, ...) \
192 no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
196 * Print a one-time message (analogous to WARN_ONCE() et al):
200 #define printk_once(fmt, ...) \
202 static bool __print_once; \
204 if (!__print_once) { \
205 __print_once = true; \
206 printk(fmt, ##__VA_ARGS__); \
210 #define printk_once(fmt, ...) \
211 no_printk(fmt, ##__VA_ARGS__)
214 #define pr_emerg_once(fmt, ...) \
215 printk_once(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
216 #define pr_alert_once(fmt, ...) \
217 printk_once(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
218 #define pr_crit_once(fmt, ...) \
219 printk_once(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
220 #define pr_err_once(fmt, ...) \
221 printk_once(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
222 #define pr_warn_once(fmt, ...) \
223 printk_once(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
224 #define pr_notice_once(fmt, ...) \
225 printk_once(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
226 #define pr_info_once(fmt, ...) \
227 printk_once(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
228 #define pr_cont_once(fmt, ...) \
229 printk_once(KERN_CONT pr_fmt(fmt), ##__VA_ARGS__)
230 /* If you are writing a driver, please use dev_dbg instead */
232 #define pr_debug_once(fmt, ...) \
233 printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
235 #define pr_debug_once(fmt, ...) \
236 no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
240 * ratelimited messages with local ratelimit_state,
241 * no local ratelimit_state used in the !PRINTK case
244 #define printk_ratelimited(fmt, ...) \
246 static DEFINE_RATELIMIT_STATE(_rs, \
247 DEFAULT_RATELIMIT_INTERVAL, \
248 DEFAULT_RATELIMIT_BURST); \
250 if (__ratelimit(&_rs)) \
251 printk(fmt, ##__VA_ARGS__); \
254 #define printk_ratelimited(fmt, ...) \
255 no_printk(fmt, ##__VA_ARGS__)
258 #define pr_emerg_ratelimited(fmt, ...) \
259 printk_ratelimited(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
260 #define pr_alert_ratelimited(fmt, ...) \
261 printk_ratelimited(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
262 #define pr_crit_ratelimited(fmt, ...) \
263 printk_ratelimited(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
264 #define pr_err_ratelimited(fmt, ...) \
265 printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
266 #define pr_warn_ratelimited(fmt, ...) \
267 printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
268 #define pr_notice_ratelimited(fmt, ...) \
269 printk_ratelimited(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
270 #define pr_info_ratelimited(fmt, ...) \
271 printk_ratelimited(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
272 /* no pr_cont_ratelimited, don't do that... */
273 /* If you are writing a driver, please use dev_dbg instead */
275 #define pr_debug_ratelimited(fmt, ...) \
276 printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
278 #define pr_debug_ratelimited(fmt, ...) \
279 no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
287 extern void hex_dump_to_buffer(const void *buf
, size_t len
,
288 int rowsize
, int groupsize
,
289 char *linebuf
, size_t linebuflen
, bool ascii
);
291 extern void print_hex_dump(const char *level
, const char *prefix_str
,
292 int prefix_type
, int rowsize
, int groupsize
,
293 const void *buf
, size_t len
, bool ascii
);
294 extern void print_hex_dump_bytes(const char *prefix_str
, int prefix_type
,
295 const void *buf
, size_t len
);
297 static inline void print_hex_dump(const char *level
, const char *prefix_str
,
298 int prefix_type
, int rowsize
, int groupsize
,
299 const void *buf
, size_t len
, bool ascii
)
302 static inline void print_hex_dump_bytes(const char *prefix_str
, int prefix_type
,
303 const void *buf
, size_t len
)
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