Commit | Line | Data |
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968ab183 LT |
1 | #ifndef __KERNEL_PRINTK__ |
2 | #define __KERNEL_PRINTK__ | |
3 | ||
4 | extern const char linux_banner[]; | |
5 | extern const char linux_proc_banner[]; | |
6 | ||
7d1e91ae JP |
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 */ | |
968ab183 LT |
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 | */ | |
7d1e91ae | 23 | #define KERN_CONT "<c>" |
968ab183 LT |
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 | ||
a9747cc3 JP |
32 | static inline void console_silent(void) |
33 | { | |
34 | console_loglevel = 0; | |
35 | } | |
36 | ||
37 | static inline void console_verbose(void) | |
38 | { | |
39 | if (console_loglevel) | |
40 | console_loglevel = 15; | |
41 | } | |
42 | ||
968ab183 LT |
43 | struct va_format { |
44 | const char *fmt; | |
45 | va_list *va; | |
46 | }; | |
47 | ||
48 | /* | |
49 | * FW_BUG | |
50 | * Add this to a message where you are sure the firmware is buggy or behaves | |
51 | * really stupid or out of spec. Be aware that the responsible BIOS developer | |
52 | * should be able to fix this issue or at least get a concrete idea of the | |
53 | * problem by reading your message without the need of looking at the kernel | |
54 | * code. | |
55 | * | |
56 | * Use it for definite and high priority BIOS bugs. | |
57 | * | |
58 | * FW_WARN | |
59 | * Use it for not that clear (e.g. could the kernel messed up things already?) | |
60 | * and medium priority BIOS bugs. | |
61 | * | |
62 | * FW_INFO | |
63 | * Use this one if you want to tell the user or vendor about something | |
64 | * suspicious, but generally harmless related to the firmware. | |
65 | * | |
66 | * Use it for information or very low priority BIOS bugs. | |
67 | */ | |
68 | #define FW_BUG "[Firmware Bug]: " | |
69 | #define FW_WARN "[Firmware Warn]: " | |
70 | #define FW_INFO "[Firmware Info]: " | |
71 | ||
72 | /* | |
73 | * HW_ERR | |
74 | * Add this to a message for hardware errors, so that user can report | |
75 | * it to hardware vendor instead of LKML or software vendor. | |
76 | */ | |
77 | #define HW_ERR "[Hardware Error]: " | |
78 | ||
5264f2f7 JP |
79 | /* |
80 | * Dummy printk for disabled debugging statements to use whilst maintaining | |
81 | * gcc's format and side-effect checking. | |
82 | */ | |
83 | static inline __attribute__ ((format (printf, 1, 2))) | |
84 | int no_printk(const char *fmt, ...) | |
85 | { | |
86 | return 0; | |
87 | } | |
88 | ||
89 | extern asmlinkage __attribute__ ((format (printf, 1, 2))) | |
90 | void early_printk(const char *fmt, ...); | |
91 | ||
92 | extern int printk_needs_cpu(int cpu); | |
93 | extern void printk_tick(void); | |
94 | ||
968ab183 | 95 | #ifdef CONFIG_PRINTK |
5264f2f7 JP |
96 | asmlinkage __attribute__ ((format (printf, 1, 0))) |
97 | int vprintk(const char *fmt, va_list args); | |
98 | asmlinkage __attribute__ ((format (printf, 1, 2))) __cold | |
99 | int printk(const char *fmt, ...); | |
968ab183 LT |
100 | |
101 | /* | |
102 | * Please don't use printk_ratelimit(), because it shares ratelimiting state | |
103 | * with all other unrelated printk_ratelimit() callsites. Instead use | |
104 | * printk_ratelimited() or plain old __ratelimit(). | |
105 | */ | |
106 | extern int __printk_ratelimit(const char *func); | |
107 | #define printk_ratelimit() __printk_ratelimit(__func__) | |
108 | extern bool printk_timed_ratelimit(unsigned long *caller_jiffies, | |
109 | unsigned int interval_msec); | |
110 | ||
111 | extern int printk_delay_msec; | |
112 | extern int dmesg_restrict; | |
455cd5ab | 113 | extern int kptr_restrict; |
968ab183 LT |
114 | |
115 | /* | |
116 | * Print a one-time message (analogous to WARN_ONCE() et al): | |
117 | */ | |
118 | #define printk_once(x...) ({ \ | |
119 | static bool __print_once; \ | |
120 | \ | |
121 | if (!__print_once) { \ | |
122 | __print_once = true; \ | |
123 | printk(x); \ | |
124 | } \ | |
125 | }) | |
126 | ||
127 | void log_buf_kexec_setup(void); | |
128 | #else | |
5264f2f7 JP |
129 | static inline __attribute__ ((format (printf, 1, 0))) |
130 | int vprintk(const char *s, va_list args) | |
131 | { | |
132 | return 0; | |
133 | } | |
134 | static inline __attribute__ ((format (printf, 1, 2))) __cold | |
135 | int printk(const char *s, ...) | |
136 | { | |
137 | return 0; | |
138 | } | |
139 | static inline int printk_ratelimit(void) | |
140 | { | |
141 | return 0; | |
142 | } | |
143 | static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies, | |
144 | unsigned int interval_msec) | |
145 | { | |
146 | return false; | |
147 | } | |
968ab183 LT |
148 | |
149 | /* No effect, but we still get type checking even in the !PRINTK case: */ | |
5264f2f7 | 150 | #define printk_once(fmt, ...) no_printk(fmt, ##__VA_ARGS__) |
968ab183 LT |
151 | |
152 | static inline void log_buf_kexec_setup(void) | |
153 | { | |
154 | } | |
155 | #endif | |
156 | ||
968ab183 LT |
157 | extern void dump_stack(void) __cold; |
158 | ||
159 | enum { | |
160 | DUMP_PREFIX_NONE, | |
161 | DUMP_PREFIX_ADDRESS, | |
162 | DUMP_PREFIX_OFFSET | |
163 | }; | |
164 | extern void hex_dump_to_buffer(const void *buf, size_t len, | |
165 | int rowsize, int groupsize, | |
166 | char *linebuf, size_t linebuflen, bool ascii); | |
167 | extern void print_hex_dump(const char *level, const char *prefix_str, | |
168 | int prefix_type, int rowsize, int groupsize, | |
169 | const void *buf, size_t len, bool ascii); | |
170 | extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type, | |
171 | const void *buf, size_t len); | |
172 | ||
173 | #ifndef pr_fmt | |
174 | #define pr_fmt(fmt) fmt | |
175 | #endif | |
176 | ||
177 | #define pr_emerg(fmt, ...) \ | |
178 | printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__) | |
179 | #define pr_alert(fmt, ...) \ | |
180 | printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__) | |
181 | #define pr_crit(fmt, ...) \ | |
182 | printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__) | |
183 | #define pr_err(fmt, ...) \ | |
184 | printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) | |
185 | #define pr_warning(fmt, ...) \ | |
186 | printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__) | |
187 | #define pr_warn pr_warning | |
188 | #define pr_notice(fmt, ...) \ | |
189 | printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__) | |
190 | #define pr_info(fmt, ...) \ | |
191 | printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) | |
192 | #define pr_cont(fmt, ...) \ | |
193 | printk(KERN_CONT fmt, ##__VA_ARGS__) | |
194 | ||
195 | /* pr_devel() should produce zero code unless DEBUG is defined */ | |
196 | #ifdef DEBUG | |
197 | #define pr_devel(fmt, ...) \ | |
198 | printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) | |
199 | #else | |
200 | #define pr_devel(fmt, ...) \ | |
5264f2f7 | 201 | no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) |
968ab183 LT |
202 | #endif |
203 | ||
204 | /* If you are writing a driver, please use dev_dbg instead */ | |
205 | #if defined(DEBUG) | |
206 | #define pr_debug(fmt, ...) \ | |
207 | printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) | |
208 | #elif defined(CONFIG_DYNAMIC_DEBUG) | |
209 | /* dynamic_pr_debug() uses pr_fmt() internally so we don't need it here */ | |
210 | #define pr_debug(fmt, ...) \ | |
211 | dynamic_pr_debug(fmt, ##__VA_ARGS__) | |
212 | #else | |
213 | #define pr_debug(fmt, ...) \ | |
5264f2f7 | 214 | no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) |
968ab183 LT |
215 | #endif |
216 | ||
217 | /* | |
218 | * ratelimited messages with local ratelimit_state, | |
219 | * no local ratelimit_state used in the !PRINTK case | |
220 | */ | |
221 | #ifdef CONFIG_PRINTK | |
222 | #define printk_ratelimited(fmt, ...) ({ \ | |
223 | static DEFINE_RATELIMIT_STATE(_rs, \ | |
224 | DEFAULT_RATELIMIT_INTERVAL, \ | |
225 | DEFAULT_RATELIMIT_BURST); \ | |
226 | \ | |
227 | if (__ratelimit(&_rs)) \ | |
228 | printk(fmt, ##__VA_ARGS__); \ | |
229 | }) | |
230 | #else | |
231 | /* No effect, but we still get type checking even in the !PRINTK case: */ | |
232 | #define printk_ratelimited printk | |
233 | #endif | |
234 | ||
235 | #define pr_emerg_ratelimited(fmt, ...) \ | |
236 | printk_ratelimited(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__) | |
237 | #define pr_alert_ratelimited(fmt, ...) \ | |
238 | printk_ratelimited(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__) | |
239 | #define pr_crit_ratelimited(fmt, ...) \ | |
240 | printk_ratelimited(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__) | |
241 | #define pr_err_ratelimited(fmt, ...) \ | |
242 | printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) | |
243 | #define pr_warning_ratelimited(fmt, ...) \ | |
244 | printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__) | |
245 | #define pr_warn_ratelimited pr_warning_ratelimited | |
246 | #define pr_notice_ratelimited(fmt, ...) \ | |
247 | printk_ratelimited(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__) | |
248 | #define pr_info_ratelimited(fmt, ...) \ | |
249 | printk_ratelimited(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) | |
250 | /* no pr_cont_ratelimited, don't do that... */ | |
251 | /* If you are writing a driver, please use dev_dbg instead */ | |
252 | #if defined(DEBUG) | |
253 | #define pr_debug_ratelimited(fmt, ...) \ | |
254 | printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) | |
255 | #else | |
256 | #define pr_debug_ratelimited(fmt, ...) \ | |
5264f2f7 | 257 | no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) |
968ab183 LT |
258 | #endif |
259 | ||
260 | #endif |