diff options
Diffstat (limited to 'backport-include/linux/printk.h')
| -rw-r--r-- | backport-include/linux/printk.h | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/backport-include/linux/printk.h b/backport-include/linux/printk.h new file mode 100644 index 0000000..22851d7 --- /dev/null +++ b/backport-include/linux/printk.h @@ -0,0 +1,154 @@ +#ifndef _COMPAT_LINUX_PRINTK_H +#define _COMPAT_LINUX_PRINTK_H 1 + +#include <linux/version.h> +#include_next <linux/printk.h> + +/* see pr_fmt at end of file */ + +#if LINUX_VERSION_IS_LESS(3,9,0) +/* backports 7a555613 */ +#if defined(CONFIG_DYNAMIC_DEBUG) +#define dynamic_hex_dump(prefix_str, prefix_type, rowsize, \ + groupsize, buf, len, ascii) \ +do { \ + DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, \ + __builtin_constant_p(prefix_str) ? prefix_str : "hexdump");\ + if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ + print_hex_dump(KERN_DEBUG, prefix_str, \ + prefix_type, rowsize, groupsize, \ + buf, len, ascii); \ +} while (0) +#define print_hex_dump_debug(prefix_str, prefix_type, rowsize, \ + groupsize, buf, len, ascii) \ + dynamic_hex_dump(prefix_str, prefix_type, rowsize, \ + groupsize, buf, len, ascii) +#else +#define print_hex_dump_debug(prefix_str, prefix_type, rowsize, \ + groupsize, buf, len, ascii) \ + print_hex_dump(KERN_DEBUG, prefix_str, prefix_type, rowsize, \ + groupsize, buf, len, ascii) +#endif /* defined(CONFIG_DYNAMIC_DEBUG) */ + +#endif /* LINUX_VERSION_IS_LESS(3,9,0) */ + +#ifndef pr_warn +#define pr_warn pr_warning +#endif + +#ifndef printk_once +#define printk_once(x...) ({ \ + static bool __print_once; \ + \ + if (!__print_once) { \ + __print_once = true; \ + printk(x); \ + } \ +}) +#endif + +#ifndef printk_ratelimited +/* + * 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 +#define printk_ratelimited(fmt, ...) \ + no_printk(fmt, ##__VA_ARGS__) +#endif +#endif /* printk_ratelimited */ + +#ifndef pr_emerg_ratelimited +#define pr_emerg_ratelimited(fmt, ...) \ + printk_ratelimited(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__) +#endif /* pr_emerg_ratelimited */ + +#ifndef pr_alert_ratelimited +#define pr_alert_ratelimited(fmt, ...) \ + printk_ratelimited(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__) +#endif /* pr_alert_ratelimited */ + +#ifndef pr_crit_ratelimited +#define pr_crit_ratelimited(fmt, ...) \ + printk_ratelimited(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__) +#endif /* pr_crit_ratelimited */ + +#ifndef pr_err_ratelimited +#define pr_err_ratelimited(fmt, ...) \ + printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) +#endif /* pr_err_ratelimited */ + +#ifndef pr_warn_ratelimited +#define pr_warn_ratelimited(fmt, ...) \ + printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__) +#endif /* pr_warn_ratelimited */ + +#ifndef pr_notice_ratelimited +#define pr_notice_ratelimited(fmt, ...) \ + printk_ratelimited(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__) +#endif /* pr_notice_ratelimited */ + +#ifndef pr_info_ratelimited +#define pr_info_ratelimited(fmt, ...) \ + printk_ratelimited(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) +#endif /* pr_info_ratelimited */ + +/* no pr_cont_ratelimited, don't do that... */ + +#ifndef pr_devel_ratelimited +#if defined(DEBUG) +#define pr_devel_ratelimited(fmt, ...) \ + printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) +#else +#define pr_devel_ratelimited(fmt, ...) \ + no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) +#endif +#endif /* pr_devel_ratelimited */ + +#ifndef pr_debug_ratelimited +/* If you are writing a driver, please use dev_dbg instead */ +#if defined(CONFIG_DYNAMIC_DEBUG) +/* descriptor check is first to prevent flooding with "callbacks suppressed" */ +#define pr_debug_ratelimited(fmt, ...) \ +do { \ + static DEFINE_RATELIMIT_STATE(_rs, \ + DEFAULT_RATELIMIT_INTERVAL, \ + DEFAULT_RATELIMIT_BURST); \ + DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ + if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT) && \ + __ratelimit(&_rs)) \ + __dynamic_pr_debug(&descriptor, fmt, ##__VA_ARGS__); \ +} while (0) +#elif defined(DEBUG) +#define pr_debug_ratelimited(fmt, ...) \ + printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) +#else +#define pr_debug_ratelimited(fmt, ...) \ + no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) +#endif +#endif /* pr_debug_ratelimited */ + +/* replace hex_dump_to_buffer() with a version which returns the length */ +#if LINUX_VERSION_IS_LESS(4,0,0) +#define hex_dump_to_buffer LINUX_BACKPORT(hex_dump_to_buffer) +extern int hex_dump_to_buffer(const void *buf, size_t len, int rowsize, + int groupsize, char *linebuf, size_t linebuflen, + bool ascii); +#endif + +#endif /* _COMPAT_LINUX_PRINTK_H */ + +/* This must be outside -- see also kernel.h */ +#ifndef pr_fmt +#define pr_fmt(fmt) fmt +#endif |