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1 | #ifndef __KERNEL_PRINTK__ |
2 | #define __KERNEL_PRINTK__ |
3 | |
4 | extern const char linux_banner[]; |
5 | extern const char linux_proc_banner[]; |
6 | |
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 */ |
15 | |
16 | /* Use the default kernel loglevel */ |
17 | #define KERN_DEFAULT "<d>" |
18 | /* |
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). |
22 | */ |
23 | #define KERN_CONT "<c>" |
24 | |
25 | extern int console_printk[]; |
26 | |
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]) |
31 | |
32 | struct va_format { |
33 | const char *fmt; |
34 | va_list *va; |
35 | }; |
36 | |
37 | /* |
38 | * FW_BUG |
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 |
43 | * code. |
44 | * |
45 | * Use it for definite and high priority BIOS bugs. |
46 | * |
47 | * FW_WARN |
48 | * Use it for not that clear (e.g. could the kernel messed up things already?) |
49 | * and medium priority BIOS bugs. |
50 | * |
51 | * FW_INFO |
52 | * Use this one if you want to tell the user or vendor about something |
53 | * suspicious, but generally harmless related to the firmware. |
54 | * |
55 | * Use it for information or very low priority BIOS bugs. |
56 | */ |
57 | #define FW_BUG "[Firmware Bug]: " |
58 | #define FW_WARN "[Firmware Warn]: " |
59 | #define FW_INFO "[Firmware Info]: " |
60 | |
61 | /* |
62 | * HW_ERR |
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. |
65 | */ |
66 | #define HW_ERR "[Hardware Error]: " |
67 | |
68 | #ifdef CONFIG_PRINTK |
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; |
73 | |
74 | /* |
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(). |
78 | */ |
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); |
83 | |
84 | extern int printk_delay_msec; |
85 | extern int dmesg_restrict; |
86 | |
87 | /* |
88 | * Print a one-time message (analogous to WARN_ONCE() et al): |
89 | */ |
90 | #define printk_once(x...) ({ \ |
91 | static bool __print_once; \ |
92 | \ |
93 | if (!__print_once) { \ |
94 | __print_once = true; \ |
95 | printk(x); \ |
96 | } \ |
97 | }) |
98 | |
99 | void log_buf_kexec_setup(void); |
100 | #else |
101 | static inline int vprintk(const char *s, va_list args) |
102 | __attribute__ ((format (printf, 1, 0))); |
103 | static inline int vprintk(const char *s, va_list args) { return 0; } |
104 | static inline int printk(const char *s, ...) |
105 | __attribute__ ((format (printf, 1, 2))); |
106 | static inline int __cold printk(const char *s, ...) { return 0; } |
107 | static inline int printk_ratelimit(void) { return 0; } |
108 | static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies, \ |
109 | unsigned int interval_msec) \ |
110 | { return false; } |
111 | |
112 | /* No effect, but we still get type checking even in the !PRINTK case: */ |
113 | #define printk_once(x...) printk(x) |
114 | |
115 | static inline void log_buf_kexec_setup(void) |
116 | { |
117 | } |
118 | #endif |
119 | |
120 | /* |
121 | * Dummy printk for disabled debugging statements to use whilst maintaining |
122 | * gcc's format and side-effect checking. |
123 | */ |
124 | static inline __attribute__ ((format (printf, 1, 2))) |
125 | int no_printk(const char *s, ...) { return 0; } |
126 | |
127 | extern int printk_needs_cpu(int cpu); |
128 | extern void printk_tick(void); |
129 | |
130 | extern void asmlinkage __attribute__((format(printf, 1, 2))) |
131 | early_printk(const char *fmt, ...); |
132 | |
133 | static inline void console_silent(void) |
134 | { |
135 | console_loglevel = 0; |
136 | } |
137 | |
138 | static inline void console_verbose(void) |
139 | { |
140 | if (console_loglevel) |
141 | console_loglevel = 15; |
142 | } |
143 | |
144 | extern void dump_stack(void) __cold; |
145 | |
146 | enum { |
147 | DUMP_PREFIX_NONE, |
148 | DUMP_PREFIX_ADDRESS, |
149 | DUMP_PREFIX_OFFSET |
150 | }; |
151 | extern void hex_dump_to_buffer(const void *buf, size_t len, |
152 | int rowsize, int groupsize, |
153 | char *linebuf, size_t linebuflen, bool ascii); |
154 | extern void print_hex_dump(const char *level, const char *prefix_str, |
155 | int prefix_type, int rowsize, int groupsize, |
156 | const void *buf, size_t len, bool ascii); |
157 | extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type, |
158 | const void *buf, size_t len); |
159 | |
160 | #ifndef pr_fmt |
161 | #define pr_fmt(fmt) fmt |
162 | #endif |
163 | |
164 | #define pr_emerg(fmt, ...) \ |
165 | printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__) |
166 | #define pr_alert(fmt, ...) \ |
167 | printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__) |
168 | #define pr_crit(fmt, ...) \ |
169 | printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__) |
170 | #define pr_err(fmt, ...) \ |
171 | printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) |
172 | #define pr_warning(fmt, ...) \ |
173 | printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__) |
174 | #define pr_warn pr_warning |
175 | #define pr_notice(fmt, ...) \ |
176 | printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__) |
177 | #define pr_info(fmt, ...) \ |
178 | printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) |
179 | #define pr_cont(fmt, ...) \ |
180 | printk(KERN_CONT fmt, ##__VA_ARGS__) |
181 | |
182 | /* pr_devel() should produce zero code unless DEBUG is defined */ |
183 | #ifdef DEBUG |
184 | #define pr_devel(fmt, ...) \ |
185 | printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) |
186 | #else |
187 | #define pr_devel(fmt, ...) \ |
188 | ({ if (0) printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); 0; }) |
189 | #endif |
190 | |
191 | /* If you are writing a driver, please use dev_dbg instead */ |
192 | #if defined(DEBUG) |
193 | #define pr_debug(fmt, ...) \ |
194 | printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) |
195 | #elif defined(CONFIG_DYNAMIC_DEBUG) |
196 | /* dynamic_pr_debug() uses pr_fmt() internally so we don't need it here */ |
197 | #define pr_debug(fmt, ...) \ |
198 | dynamic_pr_debug(fmt, ##__VA_ARGS__) |
199 | #else |
200 | #define pr_debug(fmt, ...) \ |
201 | ({ if (0) printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); 0; }) |
202 | #endif |
203 | |
204 | /* |
205 | * ratelimited messages with local ratelimit_state, |
206 | * no local ratelimit_state used in the !PRINTK case |
207 | */ |
208 | #ifdef CONFIG_PRINTK |
209 | #define printk_ratelimited(fmt, ...) ({ \ |
210 | static DEFINE_RATELIMIT_STATE(_rs, \ |
211 | DEFAULT_RATELIMIT_INTERVAL, \ |
212 | DEFAULT_RATELIMIT_BURST); \ |
213 | \ |
214 | if (__ratelimit(&_rs)) \ |
215 | printk(fmt, ##__VA_ARGS__); \ |
216 | }) |
217 | #else |
218 | /* No effect, but we still get type checking even in the !PRINTK case: */ |
219 | #define printk_ratelimited printk |
220 | #endif |
221 | |
222 | #define pr_emerg_ratelimited(fmt, ...) \ |
223 | printk_ratelimited(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__) |
224 | #define pr_alert_ratelimited(fmt, ...) \ |
225 | printk_ratelimited(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__) |
226 | #define pr_crit_ratelimited(fmt, ...) \ |
227 | printk_ratelimited(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__) |
228 | #define pr_err_ratelimited(fmt, ...) \ |
229 | printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) |
230 | #define pr_warning_ratelimited(fmt, ...) \ |
231 | printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__) |
232 | #define pr_warn_ratelimited pr_warning_ratelimited |
233 | #define pr_notice_ratelimited(fmt, ...) \ |
234 | printk_ratelimited(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__) |
235 | #define pr_info_ratelimited(fmt, ...) \ |
236 | printk_ratelimited(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) |
237 | /* no pr_cont_ratelimited, don't do that... */ |
238 | /* If you are writing a driver, please use dev_dbg instead */ |
239 | #if defined(DEBUG) |
240 | #define pr_debug_ratelimited(fmt, ...) \ |
241 | printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) |
242 | #else |
243 | #define pr_debug_ratelimited(fmt, ...) \ |
244 | ({ if (0) printk_ratelimited(KERN_DEBUG pr_fmt(fmt), \ |
245 | ##__VA_ARGS__); 0; }) |
246 | #endif |
247 | |
248 | #endif |
249 |
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Tags:
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