include/linux/kernel.h: Move logging bits to include/linux/printk.h
Move the logging bits from kernel.h into printk.h so that there is a bit more logical separation of the generic from the printk logging specific parts. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds
Родитель
22d3243de8
Коммит
968ab1838a
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@ -17,13 +17,11 @@
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#include <linux/bitops.h>
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#include <linux/log2.h>
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#include <linux/typecheck.h>
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#include <linux/printk.h>
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#include <linux/dynamic_debug.h>
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#include <asm/byteorder.h>
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#include <asm/bug.h>
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extern const char linux_banner[];
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extern const char linux_proc_banner[];
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#define USHRT_MAX ((u16)(~0U))
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#define SHRT_MAX ((s16)(USHRT_MAX>>1))
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#define SHRT_MIN ((s16)(-SHRT_MAX - 1))
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@ -110,31 +108,6 @@ extern const char linux_proc_banner[];
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*/
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#define lower_32_bits(n) ((u32)(n))
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#define KERN_EMERG "<0>" /* system is unusable */
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#define KERN_ALERT "<1>" /* action must be taken immediately */
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#define KERN_CRIT "<2>" /* critical conditions */
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#define KERN_ERR "<3>" /* error conditions */
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#define KERN_WARNING "<4>" /* warning conditions */
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#define KERN_NOTICE "<5>" /* normal but significant condition */
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#define KERN_INFO "<6>" /* informational */
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#define KERN_DEBUG "<7>" /* debug-level messages */
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/* Use the default kernel loglevel */
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#define KERN_DEFAULT "<d>"
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/*
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* Annotation for a "continued" line of log printout (only done after a
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* line that had no enclosing \n). Only to be used by core/arch code
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* during early bootup (a continued line is not SMP-safe otherwise).
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*/
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#define KERN_CONT "<c>"
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extern int console_printk[];
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#define console_loglevel (console_printk[0])
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#define default_message_loglevel (console_printk[1])
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#define minimum_console_loglevel (console_printk[2])
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#define default_console_loglevel (console_printk[3])
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struct completion;
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struct pt_regs;
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struct user;
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@ -187,11 +160,6 @@ static inline void might_fault(void)
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}
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#endif
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struct va_format {
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const char *fmt;
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va_list *va;
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};
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extern struct atomic_notifier_head panic_notifier_list;
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extern long (*panic_blink)(int state);
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NORET_TYPE void panic(const char * fmt, ...)
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@ -245,115 +213,8 @@ extern int func_ptr_is_kernel_text(void *ptr);
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struct pid;
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extern struct pid *session_of_pgrp(struct pid *pgrp);
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/*
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* FW_BUG
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* Add this to a message where you are sure the firmware is buggy or behaves
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* really stupid or out of spec. Be aware that the responsible BIOS developer
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* should be able to fix this issue or at least get a concrete idea of the
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* problem by reading your message without the need of looking at the kernel
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* code.
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*
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* Use it for definite and high priority BIOS bugs.
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*
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* FW_WARN
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* Use it for not that clear (e.g. could the kernel messed up things already?)
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* and medium priority BIOS bugs.
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*
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* FW_INFO
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* Use this one if you want to tell the user or vendor about something
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* suspicious, but generally harmless related to the firmware.
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*
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* Use it for information or very low priority BIOS bugs.
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*/
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#define FW_BUG "[Firmware Bug]: "
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#define FW_WARN "[Firmware Warn]: "
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#define FW_INFO "[Firmware Info]: "
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/*
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* HW_ERR
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* Add this to a message for hardware errors, so that user can report
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* it to hardware vendor instead of LKML or software vendor.
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*/
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#define HW_ERR "[Hardware Error]: "
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#ifdef CONFIG_PRINTK
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asmlinkage int vprintk(const char *fmt, va_list args)
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__attribute__ ((format (printf, 1, 0)));
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asmlinkage int printk(const char * fmt, ...)
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__attribute__ ((format (printf, 1, 2))) __cold;
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/*
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* Please don't use printk_ratelimit(), because it shares ratelimiting state
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* with all other unrelated printk_ratelimit() callsites. Instead use
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* printk_ratelimited() or plain old __ratelimit().
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*/
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extern int __printk_ratelimit(const char *func);
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#define printk_ratelimit() __printk_ratelimit(__func__)
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extern bool printk_timed_ratelimit(unsigned long *caller_jiffies,
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unsigned int interval_msec);
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extern int printk_delay_msec;
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extern int dmesg_restrict;
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/*
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* Print a one-time message (analogous to WARN_ONCE() et al):
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*/
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#define printk_once(x...) ({ \
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static bool __print_once; \
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\
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if (!__print_once) { \
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__print_once = true; \
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printk(x); \
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} \
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})
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void log_buf_kexec_setup(void);
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#else
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static inline int vprintk(const char *s, va_list args)
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__attribute__ ((format (printf, 1, 0)));
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static inline int vprintk(const char *s, va_list args) { return 0; }
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static inline int printk(const char *s, ...)
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__attribute__ ((format (printf, 1, 2)));
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static inline int __cold printk(const char *s, ...) { return 0; }
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static inline int printk_ratelimit(void) { return 0; }
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static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies, \
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unsigned int interval_msec) \
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{ return false; }
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/* No effect, but we still get type checking even in the !PRINTK case: */
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#define printk_once(x...) printk(x)
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static inline void log_buf_kexec_setup(void)
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{
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}
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#endif
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/*
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* Dummy printk for disabled debugging statements to use whilst maintaining
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* gcc's format and side-effect checking.
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*/
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static inline __attribute__ ((format (printf, 1, 2)))
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int no_printk(const char *s, ...) { return 0; }
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extern int printk_needs_cpu(int cpu);
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extern void printk_tick(void);
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extern void asmlinkage __attribute__((format(printf, 1, 2)))
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early_printk(const char *fmt, ...);
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unsigned long int_sqrt(unsigned long);
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static inline void console_silent(void)
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{
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console_loglevel = 0;
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}
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static inline void console_verbose(void)
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{
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if (console_loglevel)
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console_loglevel = 15;
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}
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extern void bust_spinlocks(int yes);
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extern void wake_up_klogd(void);
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extern int oops_in_progress; /* If set, an oops, panic(), BUG() or die() is in progress */
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@ -390,22 +251,6 @@ extern enum system_states {
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#define TAINT_CRAP 10
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#define TAINT_FIRMWARE_WORKAROUND 11
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extern void dump_stack(void) __cold;
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enum {
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DUMP_PREFIX_NONE,
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DUMP_PREFIX_ADDRESS,
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DUMP_PREFIX_OFFSET
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};
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extern void hex_dump_to_buffer(const void *buf, size_t len,
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int rowsize, int groupsize,
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char *linebuf, size_t linebuflen, bool ascii);
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extern void print_hex_dump(const char *level, const char *prefix_str,
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int prefix_type, int rowsize, int groupsize,
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const void *buf, size_t len, bool ascii);
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extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
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const void *buf, size_t len);
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extern const char hex_asc[];
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#define hex_asc_lo(x) hex_asc[((x) & 0x0f)]
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#define hex_asc_hi(x) hex_asc[((x) & 0xf0) >> 4]
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@ -419,94 +264,6 @@ static inline char *pack_hex_byte(char *buf, u8 byte)
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extern int hex_to_bin(char ch);
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#ifndef pr_fmt
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#define pr_fmt(fmt) fmt
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#endif
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#define pr_emerg(fmt, ...) \
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printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_alert(fmt, ...) \
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printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_crit(fmt, ...) \
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printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_err(fmt, ...) \
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printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_warning(fmt, ...) \
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printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_warn pr_warning
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#define pr_notice(fmt, ...) \
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printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_info(fmt, ...) \
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printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_cont(fmt, ...) \
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printk(KERN_CONT fmt, ##__VA_ARGS__)
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/* pr_devel() should produce zero code unless DEBUG is defined */
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#ifdef DEBUG
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#define pr_devel(fmt, ...) \
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printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
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#else
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#define pr_devel(fmt, ...) \
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({ if (0) printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); 0; })
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#endif
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/* If you are writing a driver, please use dev_dbg instead */
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#if defined(DEBUG)
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#define pr_debug(fmt, ...) \
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printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
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#elif defined(CONFIG_DYNAMIC_DEBUG)
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/* dynamic_pr_debug() uses pr_fmt() internally so we don't need it here */
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#define pr_debug(fmt, ...) \
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dynamic_pr_debug(fmt, ##__VA_ARGS__)
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#else
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#define pr_debug(fmt, ...) \
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({ if (0) printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); 0; })
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#endif
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/*
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* ratelimited messages with local ratelimit_state,
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* no local ratelimit_state used in the !PRINTK case
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*/
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#ifdef CONFIG_PRINTK
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#define printk_ratelimited(fmt, ...) ({ \
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static DEFINE_RATELIMIT_STATE(_rs, \
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DEFAULT_RATELIMIT_INTERVAL, \
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DEFAULT_RATELIMIT_BURST); \
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\
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if (__ratelimit(&_rs)) \
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printk(fmt, ##__VA_ARGS__); \
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})
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#else
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/* No effect, but we still get type checking even in the !PRINTK case: */
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#define printk_ratelimited printk
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#endif
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#define pr_emerg_ratelimited(fmt, ...) \
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printk_ratelimited(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_alert_ratelimited(fmt, ...) \
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printk_ratelimited(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_crit_ratelimited(fmt, ...) \
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printk_ratelimited(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_err_ratelimited(fmt, ...) \
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printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_warning_ratelimited(fmt, ...) \
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printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_warn_ratelimited pr_warning_ratelimited
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#define pr_notice_ratelimited(fmt, ...) \
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printk_ratelimited(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_info_ratelimited(fmt, ...) \
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printk_ratelimited(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
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/* no pr_cont_ratelimited, don't do that... */
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/* If you are writing a driver, please use dev_dbg instead */
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#if defined(DEBUG)
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#define pr_debug_ratelimited(fmt, ...) \
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printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
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#else
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#define pr_debug_ratelimited(fmt, ...) \
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({ if (0) printk_ratelimited(KERN_DEBUG pr_fmt(fmt), \
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##__VA_ARGS__); 0; })
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#endif
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/*
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* General tracing related utility functions - trace_printk(),
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* tracing_on/tracing_off and tracing_start()/tracing_stop
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|
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@ -0,0 +1,248 @@
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#ifndef __KERNEL_PRINTK__
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#define __KERNEL_PRINTK__
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extern const char linux_banner[];
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extern const char linux_proc_banner[];
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#define KERN_EMERG "<0>" /* system is unusable */
|
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#define KERN_ALERT "<1>" /* action must be taken immediately */
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#define KERN_CRIT "<2>" /* critical conditions */
|
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#define KERN_ERR "<3>" /* error conditions */
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#define KERN_WARNING "<4>" /* warning conditions */
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#define KERN_NOTICE "<5>" /* normal but significant condition */
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#define KERN_INFO "<6>" /* informational */
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#define KERN_DEBUG "<7>" /* debug-level messages */
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|
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/* Use the default kernel loglevel */
|
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#define KERN_DEFAULT "<d>"
|
||||
/*
|
||||
* Annotation for a "continued" line of log printout (only done after a
|
||||
* line that had no enclosing \n). Only to be used by core/arch code
|
||||
* during early bootup (a continued line is not SMP-safe otherwise).
|
||||
*/
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#define KERN_CONT "<c>"
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extern int console_printk[];
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|
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#define console_loglevel (console_printk[0])
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#define default_message_loglevel (console_printk[1])
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#define minimum_console_loglevel (console_printk[2])
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#define default_console_loglevel (console_printk[3])
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struct va_format {
|
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const char *fmt;
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va_list *va;
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};
|
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|
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/*
|
||||
* FW_BUG
|
||||
* Add this to a message where you are sure the firmware is buggy or behaves
|
||||
* really stupid or out of spec. Be aware that the responsible BIOS developer
|
||||
* should be able to fix this issue or at least get a concrete idea of the
|
||||
* problem by reading your message without the need of looking at the kernel
|
||||
* code.
|
||||
*
|
||||
* Use it for definite and high priority BIOS bugs.
|
||||
*
|
||||
* FW_WARN
|
||||
* Use it for not that clear (e.g. could the kernel messed up things already?)
|
||||
* and medium priority BIOS bugs.
|
||||
*
|
||||
* FW_INFO
|
||||
* Use this one if you want to tell the user or vendor about something
|
||||
* suspicious, but generally harmless related to the firmware.
|
||||
*
|
||||
* Use it for information or very low priority BIOS bugs.
|
||||
*/
|
||||
#define FW_BUG "[Firmware Bug]: "
|
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#define FW_WARN "[Firmware Warn]: "
|
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#define FW_INFO "[Firmware Info]: "
|
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|
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/*
|
||||
* HW_ERR
|
||||
* Add this to a message for hardware errors, so that user can report
|
||||
* it to hardware vendor instead of LKML or software vendor.
|
||||
*/
|
||||
#define HW_ERR "[Hardware Error]: "
|
||||
|
||||
#ifdef CONFIG_PRINTK
|
||||
asmlinkage int vprintk(const char *fmt, va_list args)
|
||||
__attribute__ ((format (printf, 1, 0)));
|
||||
asmlinkage int printk(const char * fmt, ...)
|
||||
__attribute__ ((format (printf, 1, 2))) __cold;
|
||||
|
||||
/*
|
||||
* Please don't use printk_ratelimit(), because it shares ratelimiting state
|
||||
* with all other unrelated printk_ratelimit() callsites. Instead use
|
||||
* printk_ratelimited() or plain old __ratelimit().
|
||||
*/
|
||||
extern int __printk_ratelimit(const char *func);
|
||||
#define printk_ratelimit() __printk_ratelimit(__func__)
|
||||
extern bool printk_timed_ratelimit(unsigned long *caller_jiffies,
|
||||
unsigned int interval_msec);
|
||||
|
||||
extern int printk_delay_msec;
|
||||
extern int dmesg_restrict;
|
||||
|
||||
/*
|
||||
* Print a one-time message (analogous to WARN_ONCE() et al):
|
||||
*/
|
||||
#define printk_once(x...) ({ \
|
||||
static bool __print_once; \
|
||||
\
|
||||
if (!__print_once) { \
|
||||
__print_once = true; \
|
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printk(x); \
|
||||
} \
|
||||
})
|
||||
|
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void log_buf_kexec_setup(void);
|
||||
#else
|
||||
static inline int vprintk(const char *s, va_list args)
|
||||
__attribute__ ((format (printf, 1, 0)));
|
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static inline int vprintk(const char *s, va_list args) { return 0; }
|
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static inline int printk(const char *s, ...)
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__attribute__ ((format (printf, 1, 2)));
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static inline int __cold printk(const char *s, ...) { return 0; }
|
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static inline int printk_ratelimit(void) { return 0; }
|
||||
static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies, \
|
||||
unsigned int interval_msec) \
|
||||
{ return false; }
|
||||
|
||||
/* No effect, but we still get type checking even in the !PRINTK case: */
|
||||
#define printk_once(x...) printk(x)
|
||||
|
||||
static inline void log_buf_kexec_setup(void)
|
||||
{
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Dummy printk for disabled debugging statements to use whilst maintaining
|
||||
* gcc's format and side-effect checking.
|
||||
*/
|
||||
static inline __attribute__ ((format (printf, 1, 2)))
|
||||
int no_printk(const char *s, ...) { return 0; }
|
||||
|
||||
extern int printk_needs_cpu(int cpu);
|
||||
extern void printk_tick(void);
|
||||
|
||||
extern void asmlinkage __attribute__((format(printf, 1, 2)))
|
||||
early_printk(const char *fmt, ...);
|
||||
|
||||
static inline void console_silent(void)
|
||||
{
|
||||
console_loglevel = 0;
|
||||
}
|
||||
|
||||
static inline void console_verbose(void)
|
||||
{
|
||||
if (console_loglevel)
|
||||
console_loglevel = 15;
|
||||
}
|
||||
|
||||
extern void dump_stack(void) __cold;
|
||||
|
||||
enum {
|
||||
DUMP_PREFIX_NONE,
|
||||
DUMP_PREFIX_ADDRESS,
|
||||
DUMP_PREFIX_OFFSET
|
||||
};
|
||||
extern void hex_dump_to_buffer(const void *buf, size_t len,
|
||||
int rowsize, int groupsize,
|
||||
char *linebuf, size_t linebuflen, bool ascii);
|
||||
extern void print_hex_dump(const char *level, const char *prefix_str,
|
||||
int prefix_type, int rowsize, int groupsize,
|
||||
const void *buf, size_t len, bool ascii);
|
||||
extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
|
||||
const void *buf, size_t len);
|
||||
|
||||
#ifndef pr_fmt
|
||||
#define pr_fmt(fmt) fmt
|
||||
#endif
|
||||
|
||||
#define pr_emerg(fmt, ...) \
|
||||
printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
|
||||
#define pr_alert(fmt, ...) \
|
||||
printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
|
||||
#define pr_crit(fmt, ...) \
|
||||
printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
|
||||
#define pr_err(fmt, ...) \
|
||||
printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
|
||||
#define pr_warning(fmt, ...) \
|
||||
printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
|
||||
#define pr_warn pr_warning
|
||||
#define pr_notice(fmt, ...) \
|
||||
printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
|
||||
#define pr_info(fmt, ...) \
|
||||
printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
|
||||
#define pr_cont(fmt, ...) \
|
||||
printk(KERN_CONT fmt, ##__VA_ARGS__)
|
||||
|
||||
/* pr_devel() should produce zero code unless DEBUG is defined */
|
||||
#ifdef DEBUG
|
||||
#define pr_devel(fmt, ...) \
|
||||
printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
|
||||
#else
|
||||
#define pr_devel(fmt, ...) \
|
||||
({ if (0) printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); 0; })
|
||||
#endif
|
||||
|
||||
/* If you are writing a driver, please use dev_dbg instead */
|
||||
#if defined(DEBUG)
|
||||
#define pr_debug(fmt, ...) \
|
||||
printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
|
||||
#elif defined(CONFIG_DYNAMIC_DEBUG)
|
||||
/* dynamic_pr_debug() uses pr_fmt() internally so we don't need it here */
|
||||
#define pr_debug(fmt, ...) \
|
||||
dynamic_pr_debug(fmt, ##__VA_ARGS__)
|
||||
#else
|
||||
#define pr_debug(fmt, ...) \
|
||||
({ if (0) printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); 0; })
|
||||
#endif
|
||||
|
||||
/*
|
||||
* ratelimited messages with local ratelimit_state,
|
||||
* no local ratelimit_state used in the !PRINTK case
|
||||
*/
|
||||
#ifdef CONFIG_PRINTK
|
||||
#define printk_ratelimited(fmt, ...) ({ \
|
||||
static DEFINE_RATELIMIT_STATE(_rs, \
|
||||
DEFAULT_RATELIMIT_INTERVAL, \
|
||||
DEFAULT_RATELIMIT_BURST); \
|
||||
\
|
||||
if (__ratelimit(&_rs)) \
|
||||
printk(fmt, ##__VA_ARGS__); \
|
||||
})
|
||||
#else
|
||||
/* No effect, but we still get type checking even in the !PRINTK case: */
|
||||
#define printk_ratelimited printk
|
||||
#endif
|
||||
|
||||
#define pr_emerg_ratelimited(fmt, ...) \
|
||||
printk_ratelimited(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
|
||||
#define pr_alert_ratelimited(fmt, ...) \
|
||||
printk_ratelimited(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
|
||||
#define pr_crit_ratelimited(fmt, ...) \
|
||||
printk_ratelimited(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
|
||||
#define pr_err_ratelimited(fmt, ...) \
|
||||
printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
|
||||
#define pr_warning_ratelimited(fmt, ...) \
|
||||
printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
|
||||
#define pr_warn_ratelimited pr_warning_ratelimited
|
||||
#define pr_notice_ratelimited(fmt, ...) \
|
||||
printk_ratelimited(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
|
||||
#define pr_info_ratelimited(fmt, ...) \
|
||||
printk_ratelimited(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
|
||||
/* no pr_cont_ratelimited, don't do that... */
|
||||
/* If you are writing a driver, please use dev_dbg instead */
|
||||
#if defined(DEBUG)
|
||||
#define pr_debug_ratelimited(fmt, ...) \
|
||||
printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
|
||||
#else
|
||||
#define pr_debug_ratelimited(fmt, ...) \
|
||||
({ if (0) printk_ratelimited(KERN_DEBUG pr_fmt(fmt), \
|
||||
##__VA_ARGS__); 0; })
|
||||
#endif
|
||||
|
||||
#endif
|
||||
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