bug.h File Reference

#include <asm/bug.h>
#include <linux/compiler.h>
#include <linux/build_bug.h>

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Macros
#define	MAYBE_BUILD_BUG_ON(cond)
#define	WARN_ONCE(cond, fmt, ...)
#define	CHECK_DATA_CORRUPTION(condition, addr, fmt, ...)

Enumerations
enum	bug_trap_type { BUG_TRAP_TYPE_NONE = 0 , BUG_TRAP_TYPE_WARN = 1 , BUG_TRAP_TYPE_BUG = 2 }

Macro Definition Documentation

CHECK_DATA_CORRUPTION

#define CHECK_DATA_CORRUPTION	(		condition,
			addr,
			fmt,
			...
	)

Value:

    check_data_corruption(({                     \
        bool corruption = unlikely(condition);           \
        if (corruption) {                    \
            if (addr)                    \
                mem_dump_obj(addr);          \
            if (IS_ENABLED(CONFIG_BUG_ON_DATA_CORRUPTION)) { \
                pr_err(fmt, ##__VA_ARGS__);      \
                BUG();                   \
            } else                       \
                WARN(1, fmt, ##__VA_ARGS__);         \
        }                            \
        corruption;                      \
    }))

MAYBE_BUILD_BUG_ON

#define MAYBE_BUILD_BUG_ON

(

cond

)

Value:

    do {                        \
        if (__builtin_constant_p((cond)))       \
            BUILD_BUG_ON(cond);             \
        else                                    \
            BUG_ON(cond);                   \
    } while (0)

WARN_ONCE

#define WARN_ONCE	(		cond,
			fmt,
			...
	)

Value:

    ({                              \
        static int __warned_once;               \
        int __wret = !!(cond);                  \
        if (__wret && !__warned_once) {             \
            __warned_once = 1;              \
            UARTDebugOut("[WARN] " fmt " (%s:%d)\r\n",  \
                ##__VA_ARGS__, __FILE__, __LINE__); \
        }                           \
        __wret;                         \
    })

Enumeration Type Documentation

bug_trap_type

enum bug_trap_type

Enumerator
BUG_TRAP_TYPE_NONE
BUG_TRAP_TYPE_WARN
BUG_TRAP_TYPE_BUG