1 #ifndef __KERNEL_PRINTK__
2 #define __KERNEL_PRINTK__
4 extern const char linux_banner[];
5 extern const char linux_proc_banner[];
7 #define KERN_EMERG "<0>" /* system is unusable */
8 #define KERN_ALERT "<1>" /* action must be taken immediately */
9 #define KERN_CRIT "<2>" /* critical conditions */
10 #define KERN_ERR "<3>" /* error conditions */
11 #define KERN_WARNING "<4>" /* warning conditions */
12 #define KERN_NOTICE "<5>" /* normal but significant condition */
13 #define KERN_INFO "<6>" /* informational */
14 #define KERN_DEBUG "<7>" /* debug-level messages */
16 /* Use the default kernel loglevel */
17 #define KERN_DEFAULT "<d>"
19 * Annotation for a "continued" line of log printout (only done after a
20 * line that had no enclosing \n). Only to be used by core/arch code
21 * during early bootup (a continued line is not SMP-safe otherwise).
23 #define KERN_CONT "<c>"
25 extern int console_printk[];
27 #define console_loglevel (console_printk[0])
28 #define default_message_loglevel (console_printk[1])
29 #define minimum_console_loglevel (console_printk[2])
30 #define default_console_loglevel (console_printk[3])
39 * Add this to a message where you are sure the firmware is buggy or behaves
40 * really stupid or out of spec. Be aware that the responsible BIOS developer
41 * should be able to fix this issue or at least get a concrete idea of the
42 * problem by reading your message without the need of looking at the kernel
45 * Use it for definite and high priority BIOS bugs.
48 * Use it for not that clear (e.g. could the kernel messed up things already?)
49 * and medium priority BIOS bugs.
52 * Use this one if you want to tell the user or vendor about something
53 * suspicious, but generally harmless related to the firmware.
55 * Use it for information or very low priority BIOS bugs.
57 #define FW_BUG "[Firmware Bug]: "
58 #define FW_WARN "[Firmware Warn]: "
59 #define FW_INFO "[Firmware Info]: "
63 * Add this to a message for hardware errors, so that user can report
64 * it to hardware vendor instead of LKML or software vendor.
66 #define HW_ERR "[Hardware Error]: "
69 asmlinkage int vprintk(const char *fmt, va_list args)
70 __attribute__ ((format (printf, 1, 0)));
71 asmlinkage int printk(const char * fmt, ...)
72 __attribute__ ((format (printf, 1, 2))) __cold;
75 * Please don't use printk_ratelimit(), because it shares ratelimiting state
76 * with all other unrelated printk_ratelimit() callsites. Instead use
77 * printk_ratelimited() or plain old __ratelimit().
79 extern int __printk_ratelimit(const char *func);
80 #define printk_ratelimit() __printk_ratelimit(__func__)
81 extern bool printk_timed_ratelimit(unsigned long *caller_jiffies,
82 unsigned int interval_msec);
84 extern int printk_delay_msec;
85 extern int dmesg_restrict;
86 extern int kptr_restrict;
89 * Print a one-time message (analogous to WARN_ONCE() et al):
91 #define printk_once(x...) ({ \
92 static bool __print_once; \
94 if (!__print_once) { \
95 __print_once = true; \
100 void log_buf_kexec_setup(void);
102 static inline int vprintk(const char *s, va_list args)
103 __attribute__ ((format (printf, 1, 0)));
104 static inline int vprintk(const char *s, va_list args) { return 0; }
105 static inline int printk(const char *s, ...)
106 __attribute__ ((format (printf, 1, 2)));
107 static inline int __cold printk(const char *s, ...) { return 0; }
108 static inline int printk_ratelimit(void) { return 0; }
109 static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies, \
110 unsigned int interval_msec) \
113 /* No effect, but we still get type checking even in the !PRINTK case: */
114 #define printk_once(x...) printk(x)
116 static inline void log_buf_kexec_setup(void)
122 * Dummy printk for disabled debugging statements to use whilst maintaining
123 * gcc's format and side-effect checking.
125 static inline __attribute__ ((format (printf, 1, 2)))
126 int no_printk(const char *s, ...) { return 0; }
128 extern int printk_needs_cpu(int cpu);
129 extern void printk_tick(void);
131 extern void asmlinkage __attribute__((format(printf, 1, 2)))
132 early_printk(const char *fmt, ...);
134 static inline void console_silent(void)
136 console_loglevel = 0;
139 static inline void console_verbose(void)
141 if (console_loglevel)
142 console_loglevel = 15;
145 extern void dump_stack(void) __cold;
152 extern void hex_dump_to_buffer(const void *buf, size_t len,
153 int rowsize, int groupsize,
154 char *linebuf, size_t linebuflen, bool ascii);
155 extern void print_hex_dump(const char *level, const char *prefix_str,
156 int prefix_type, int rowsize, int groupsize,
157 const void *buf, size_t len, bool ascii);
158 extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
159 const void *buf, size_t len);
162 #define pr_fmt(fmt) fmt
165 #define pr_emerg(fmt, ...) \
166 printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
167 #define pr_alert(fmt, ...) \
168 printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
169 #define pr_crit(fmt, ...) \
170 printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
171 #define pr_err(fmt, ...) \
172 printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
173 #define pr_warning(fmt, ...) \
174 printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
175 #define pr_warn pr_warning
176 #define pr_notice(fmt, ...) \
177 printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
178 #define pr_info(fmt, ...) \
179 printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
180 #define pr_cont(fmt, ...) \
181 printk(KERN_CONT fmt, ##__VA_ARGS__)
183 /* pr_devel() should produce zero code unless DEBUG is defined */
185 #define pr_devel(fmt, ...) \
186 printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
188 #define pr_devel(fmt, ...) \
189 ({ if (0) printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); 0; })
192 /* If you are writing a driver, please use dev_dbg instead */
194 #define pr_debug(fmt, ...) \
195 printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
196 #elif defined(CONFIG_DYNAMIC_DEBUG)
197 /* dynamic_pr_debug() uses pr_fmt() internally so we don't need it here */
198 #define pr_debug(fmt, ...) \
199 dynamic_pr_debug(fmt, ##__VA_ARGS__)
201 #define pr_debug(fmt, ...) \
202 ({ if (0) printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); 0; })
206 * ratelimited messages with local ratelimit_state,
207 * no local ratelimit_state used in the !PRINTK case
210 #define printk_ratelimited(fmt, ...) ({ \
211 static DEFINE_RATELIMIT_STATE(_rs, \
212 DEFAULT_RATELIMIT_INTERVAL, \
213 DEFAULT_RATELIMIT_BURST); \
215 if (__ratelimit(&_rs)) \
216 printk(fmt, ##__VA_ARGS__); \
219 /* No effect, but we still get type checking even in the !PRINTK case: */
220 #define printk_ratelimited printk
223 #define pr_emerg_ratelimited(fmt, ...) \
224 printk_ratelimited(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
225 #define pr_alert_ratelimited(fmt, ...) \
226 printk_ratelimited(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
227 #define pr_crit_ratelimited(fmt, ...) \
228 printk_ratelimited(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
229 #define pr_err_ratelimited(fmt, ...) \
230 printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
231 #define pr_warning_ratelimited(fmt, ...) \
232 printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
233 #define pr_warn_ratelimited pr_warning_ratelimited
234 #define pr_notice_ratelimited(fmt, ...) \
235 printk_ratelimited(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
236 #define pr_info_ratelimited(fmt, ...) \
237 printk_ratelimited(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
238 /* no pr_cont_ratelimited, don't do that... */
239 /* If you are writing a driver, please use dev_dbg instead */
241 #define pr_debug_ratelimited(fmt, ...) \
242 printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
244 #define pr_debug_ratelimited(fmt, ...) \
245 ({ if (0) printk_ratelimited(KERN_DEBUG pr_fmt(fmt), \
246 ##__VA_ARGS__); 0; })