1 /* SPDX-License-Identifier: GPL-2.0 */
6 #include <linux/compiler.h>
7 #include <linux/build_bug.h>
10 BUG_TRAP_TYPE_NONE = 0,
11 BUG_TRAP_TYPE_WARN = 1,
12 BUG_TRAP_TYPE_BUG = 2,
18 #define MAYBE_BUILD_BUG_ON(cond) (0)
19 #else /* __CHECKER__ */
21 #define MAYBE_BUILD_BUG_ON(cond) \
23 if (__builtin_constant_p((cond))) \
29 #endif /* __CHECKER__ */
31 #ifdef CONFIG_GENERIC_BUG
32 #include <asm-generic/bug.h>
34 static inline int is_warning_bug(const struct bug_entry *bug)
36 return bug->flags & BUGFLAG_WARNING;
39 struct bug_entry *find_bug(unsigned long bugaddr);
41 enum bug_trap_type report_bug(unsigned long bug_addr, struct pt_regs *regs);
43 /* These are defined by the architecture */
44 int is_valid_bugaddr(unsigned long addr);
46 #else /* !CONFIG_GENERIC_BUG */
48 static inline enum bug_trap_type report_bug(unsigned long bug_addr,
51 return BUG_TRAP_TYPE_BUG;
54 #endif /* CONFIG_GENERIC_BUG */
57 * Since detected data corruption should stop operation on the affected
58 * structures. Return value must be checked and sanely acted on by caller.
60 static inline __must_check bool check_data_corruption(bool v) { return v; }
61 #define CHECK_DATA_CORRUPTION(condition, fmt, ...) \
62 check_data_corruption(({ \
63 bool corruption = unlikely(condition); \
65 if (IS_ENABLED(CONFIG_BUG_ON_DATA_CORRUPTION)) { \
66 pr_err(fmt, ##__VA_ARGS__); \
69 WARN(1, fmt, ##__VA_ARGS__); \
74 #endif /* _LINUX_BUG_H */