diff options
Diffstat (limited to 'include/linux/kernel.h')
-rw-r--r-- | include/linux/kernel.h | 87 |
1 files changed, 49 insertions, 38 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 9365227dbaf6..2b0a35e6bc69 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h | |||
@@ -4,6 +4,8 @@ | |||
4 | /* | 4 | /* |
5 | * 'kernel.h' contains some often-used function prototypes etc | 5 | * 'kernel.h' contains some often-used function prototypes etc |
6 | */ | 6 | */ |
7 | #define __ALIGN_KERNEL(x, a) __ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1) | ||
8 | #define __ALIGN_KERNEL_MASK(x, mask) (((x) + (mask)) & ~(mask)) | ||
7 | 9 | ||
8 | #ifdef __KERNEL__ | 10 | #ifdef __KERNEL__ |
9 | 11 | ||
@@ -22,9 +24,9 @@ | |||
22 | extern const char linux_banner[]; | 24 | extern const char linux_banner[]; |
23 | extern const char linux_proc_banner[]; | 25 | extern const char linux_proc_banner[]; |
24 | 26 | ||
25 | #define USHORT_MAX ((u16)(~0U)) | 27 | #define USHRT_MAX ((u16)(~0U)) |
26 | #define SHORT_MAX ((s16)(USHORT_MAX>>1)) | 28 | #define SHRT_MAX ((s16)(USHRT_MAX>>1)) |
27 | #define SHORT_MIN (-SHORT_MAX - 1) | 29 | #define SHRT_MIN ((s16)(-SHRT_MAX - 1)) |
28 | #define INT_MAX ((int)(~0U>>1)) | 30 | #define INT_MAX ((int)(~0U>>1)) |
29 | #define INT_MIN (-INT_MAX - 1) | 31 | #define INT_MIN (-INT_MAX - 1) |
30 | #define UINT_MAX (~0U) | 32 | #define UINT_MAX (~0U) |
@@ -37,8 +39,8 @@ extern const char linux_proc_banner[]; | |||
37 | 39 | ||
38 | #define STACK_MAGIC 0xdeadbeef | 40 | #define STACK_MAGIC 0xdeadbeef |
39 | 41 | ||
40 | #define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1) | 42 | #define ALIGN(x, a) __ALIGN_KERNEL((x), (a)) |
41 | #define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask)) | 43 | #define __ALIGN_MASK(x, mask) __ALIGN_KERNEL_MASK((x), (mask)) |
42 | #define PTR_ALIGN(p, a) ((typeof(p))ALIGN((unsigned long)(p), (a))) | 44 | #define PTR_ALIGN(p, a) ((typeof(p))ALIGN((unsigned long)(p), (a))) |
43 | #define IS_ALIGNED(x, a) (((x) & ((typeof(x))(a) - 1)) == 0) | 45 | #define IS_ALIGNED(x, a) (((x) & ((typeof(x))(a) - 1)) == 0) |
44 | 46 | ||
@@ -169,12 +171,18 @@ static inline void might_fault(void) | |||
169 | } | 171 | } |
170 | #endif | 172 | #endif |
171 | 173 | ||
174 | struct va_format { | ||
175 | const char *fmt; | ||
176 | va_list *va; | ||
177 | }; | ||
178 | |||
172 | extern struct atomic_notifier_head panic_notifier_list; | 179 | extern struct atomic_notifier_head panic_notifier_list; |
173 | extern long (*panic_blink)(long time); | 180 | extern long (*panic_blink)(int state); |
174 | NORET_TYPE void panic(const char * fmt, ...) | 181 | NORET_TYPE void panic(const char * fmt, ...) |
175 | __attribute__ ((NORET_AND format (printf, 1, 2))) __cold; | 182 | __attribute__ ((NORET_AND format (printf, 1, 2))) __cold; |
176 | extern void oops_enter(void); | 183 | extern void oops_enter(void); |
177 | extern void oops_exit(void); | 184 | extern void oops_exit(void); |
185 | void print_oops_end_marker(void); | ||
178 | extern int oops_may_print(void); | 186 | extern int oops_may_print(void); |
179 | NORET_TYPE void do_exit(long error_code) | 187 | NORET_TYPE void do_exit(long error_code) |
180 | ATTRIB_NORET; | 188 | ATTRIB_NORET; |
@@ -245,6 +253,13 @@ extern struct pid *session_of_pgrp(struct pid *pgrp); | |||
245 | #define FW_WARN "[Firmware Warn]: " | 253 | #define FW_WARN "[Firmware Warn]: " |
246 | #define FW_INFO "[Firmware Info]: " | 254 | #define FW_INFO "[Firmware Info]: " |
247 | 255 | ||
256 | /* | ||
257 | * HW_ERR | ||
258 | * Add this to a message for hardware errors, so that user can report | ||
259 | * it to hardware vendor instead of LKML or software vendor. | ||
260 | */ | ||
261 | #define HW_ERR "[Hardware Error]: " | ||
262 | |||
248 | #ifdef CONFIG_PRINTK | 263 | #ifdef CONFIG_PRINTK |
249 | asmlinkage int vprintk(const char *fmt, va_list args) | 264 | asmlinkage int vprintk(const char *fmt, va_list args) |
250 | __attribute__ ((format (printf, 1, 0))); | 265 | __attribute__ ((format (printf, 1, 0))); |
@@ -291,6 +306,13 @@ static inline void log_buf_kexec_setup(void) | |||
291 | } | 306 | } |
292 | #endif | 307 | #endif |
293 | 308 | ||
309 | /* | ||
310 | * Dummy printk for disabled debugging statements to use whilst maintaining | ||
311 | * gcc's format and side-effect checking. | ||
312 | */ | ||
313 | static inline __attribute__ ((format (printf, 1, 2))) | ||
314 | int no_printk(const char *s, ...) { return 0; } | ||
315 | |||
294 | extern int printk_needs_cpu(int cpu); | 316 | extern int printk_needs_cpu(int cpu); |
295 | extern void printk_tick(void); | 317 | extern void printk_tick(void); |
296 | 318 | ||
@@ -344,6 +366,7 @@ extern enum system_states { | |||
344 | #define TAINT_OVERRIDDEN_ACPI_TABLE 8 | 366 | #define TAINT_OVERRIDDEN_ACPI_TABLE 8 |
345 | #define TAINT_WARN 9 | 367 | #define TAINT_WARN 9 |
346 | #define TAINT_CRAP 10 | 368 | #define TAINT_CRAP 10 |
369 | #define TAINT_FIRMWARE_WORKAROUND 11 | ||
347 | 370 | ||
348 | extern void dump_stack(void) __cold; | 371 | extern void dump_stack(void) __cold; |
349 | 372 | ||
@@ -372,6 +395,8 @@ static inline char *pack_hex_byte(char *buf, u8 byte) | |||
372 | return buf; | 395 | return buf; |
373 | } | 396 | } |
374 | 397 | ||
398 | extern int hex_to_bin(char ch); | ||
399 | |||
375 | #ifndef pr_fmt | 400 | #ifndef pr_fmt |
376 | #define pr_fmt(fmt) fmt | 401 | #define pr_fmt(fmt) fmt |
377 | #endif | 402 | #endif |
@@ -386,6 +411,7 @@ static inline char *pack_hex_byte(char *buf, u8 byte) | |||
386 | printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) | 411 | printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) |
387 | #define pr_warning(fmt, ...) \ | 412 | #define pr_warning(fmt, ...) \ |
388 | printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__) | 413 | printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__) |
414 | #define pr_warn pr_warning | ||
389 | #define pr_notice(fmt, ...) \ | 415 | #define pr_notice(fmt, ...) \ |
390 | printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__) | 416 | printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__) |
391 | #define pr_info(fmt, ...) \ | 417 | #define pr_info(fmt, ...) \ |
@@ -420,14 +446,13 @@ static inline char *pack_hex_byte(char *buf, u8 byte) | |||
420 | * no local ratelimit_state used in the !PRINTK case | 446 | * no local ratelimit_state used in the !PRINTK case |
421 | */ | 447 | */ |
422 | #ifdef CONFIG_PRINTK | 448 | #ifdef CONFIG_PRINTK |
423 | #define printk_ratelimited(fmt, ...) ({ \ | 449 | #define printk_ratelimited(fmt, ...) ({ \ |
424 | static struct ratelimit_state _rs = { \ | 450 | static DEFINE_RATELIMIT_STATE(_rs, \ |
425 | .interval = DEFAULT_RATELIMIT_INTERVAL, \ | 451 | DEFAULT_RATELIMIT_INTERVAL, \ |
426 | .burst = DEFAULT_RATELIMIT_BURST, \ | 452 | DEFAULT_RATELIMIT_BURST); \ |
427 | }; \ | 453 | \ |
428 | \ | 454 | if (__ratelimit(&_rs)) \ |
429 | if (__ratelimit(&_rs)) \ | 455 | printk(fmt, ##__VA_ARGS__); \ |
430 | printk(fmt, ##__VA_ARGS__); \ | ||
431 | }) | 456 | }) |
432 | #else | 457 | #else |
433 | /* No effect, but we still get type checking even in the !PRINTK case: */ | 458 | /* No effect, but we still get type checking even in the !PRINTK case: */ |
@@ -444,6 +469,7 @@ static inline char *pack_hex_byte(char *buf, u8 byte) | |||
444 | printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) | 469 | printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) |
445 | #define pr_warning_ratelimited(fmt, ...) \ | 470 | #define pr_warning_ratelimited(fmt, ...) \ |
446 | printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__) | 471 | printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__) |
472 | #define pr_warn_ratelimited pr_warning_ratelimited | ||
447 | #define pr_notice_ratelimited(fmt, ...) \ | 473 | #define pr_notice_ratelimited(fmt, ...) \ |
448 | printk_ratelimited(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__) | 474 | printk_ratelimited(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__) |
449 | #define pr_info_ratelimited(fmt, ...) \ | 475 | #define pr_info_ratelimited(fmt, ...) \ |
@@ -490,14 +516,18 @@ static inline void tracing_off(void) { } | |||
490 | static inline void tracing_off_permanent(void) { } | 516 | static inline void tracing_off_permanent(void) { } |
491 | static inline int tracing_is_on(void) { return 0; } | 517 | static inline int tracing_is_on(void) { return 0; } |
492 | #endif | 518 | #endif |
519 | |||
520 | enum ftrace_dump_mode { | ||
521 | DUMP_NONE, | ||
522 | DUMP_ALL, | ||
523 | DUMP_ORIG, | ||
524 | }; | ||
525 | |||
493 | #ifdef CONFIG_TRACING | 526 | #ifdef CONFIG_TRACING |
494 | extern void tracing_start(void); | 527 | extern void tracing_start(void); |
495 | extern void tracing_stop(void); | 528 | extern void tracing_stop(void); |
496 | extern void ftrace_off_permanent(void); | 529 | extern void ftrace_off_permanent(void); |
497 | 530 | ||
498 | extern void | ||
499 | ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3); | ||
500 | |||
501 | static inline void __attribute__ ((format (printf, 1, 2))) | 531 | static inline void __attribute__ ((format (printf, 1, 2))) |
502 | ____trace_printk_check_format(const char *fmt, ...) | 532 | ____trace_printk_check_format(const char *fmt, ...) |
503 | { | 533 | { |
@@ -571,10 +601,8 @@ __ftrace_vbprintk(unsigned long ip, const char *fmt, va_list ap); | |||
571 | extern int | 601 | extern int |
572 | __ftrace_vprintk(unsigned long ip, const char *fmt, va_list ap); | 602 | __ftrace_vprintk(unsigned long ip, const char *fmt, va_list ap); |
573 | 603 | ||
574 | extern void ftrace_dump(void); | 604 | extern void ftrace_dump(enum ftrace_dump_mode oops_dump_mode); |
575 | #else | 605 | #else |
576 | static inline void | ||
577 | ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3) { } | ||
578 | static inline int | 606 | static inline int |
579 | trace_printk(const char *fmt, ...) __attribute__ ((format (printf, 1, 2))); | 607 | trace_printk(const char *fmt, ...) __attribute__ ((format (printf, 1, 2))); |
580 | 608 | ||
@@ -592,21 +620,10 @@ ftrace_vprintk(const char *fmt, va_list ap) | |||
592 | { | 620 | { |
593 | return 0; | 621 | return 0; |
594 | } | 622 | } |
595 | static inline void ftrace_dump(void) { } | 623 | static inline void ftrace_dump(enum ftrace_dump_mode oops_dump_mode) { } |
596 | #endif /* CONFIG_TRACING */ | 624 | #endif /* CONFIG_TRACING */ |
597 | 625 | ||
598 | /* | 626 | /* |
599 | * Display an IP address in readable format. | ||
600 | */ | ||
601 | |||
602 | #define NIPQUAD(addr) \ | ||
603 | ((unsigned char *)&addr)[0], \ | ||
604 | ((unsigned char *)&addr)[1], \ | ||
605 | ((unsigned char *)&addr)[2], \ | ||
606 | ((unsigned char *)&addr)[3] | ||
607 | #define NIPQUAD_FMT "%u.%u.%u.%u" | ||
608 | |||
609 | /* | ||
610 | * min()/max()/clamp() macros that also do | 627 | * min()/max()/clamp() macros that also do |
611 | * strict type-checking.. See the | 628 | * strict type-checking.. See the |
612 | * "unnecessary" pointer comparison. | 629 | * "unnecessary" pointer comparison. |
@@ -715,12 +732,6 @@ extern int do_sysinfo(struct sysinfo *info); | |||
715 | 732 | ||
716 | #endif /* __KERNEL__ */ | 733 | #endif /* __KERNEL__ */ |
717 | 734 | ||
718 | #ifndef __EXPORTED_HEADERS__ | ||
719 | #ifndef __KERNEL__ | ||
720 | #warning Attempt to use kernel headers from user space, see http://kernelnewbies.org/KernelHeaders | ||
721 | #endif /* __KERNEL__ */ | ||
722 | #endif /* __EXPORTED_HEADERS__ */ | ||
723 | |||
724 | #define SI_LOAD_SHIFT 16 | 735 | #define SI_LOAD_SHIFT 16 |
725 | struct sysinfo { | 736 | struct sysinfo { |
726 | long uptime; /* Seconds since boot */ | 737 | long uptime; /* Seconds since boot */ |