disable kernel build waring

hc

2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b

 kernel/include/linux/kdb.h
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@@ -125,7 +125,7 @@
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 #define KDB_FLAG_NO_I8042	(1 << 7) /* No i8042 chip is available, do
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 					  * not use keyboard */
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-extern int kdb_flags;	/* Global flags, see kdb_state for per cpu state */
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+extern unsigned int kdb_flags;	/* Global flags, see kdb_state for per cpu state */
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 extern void kdb_save_flags(void);
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 extern void kdb_restore_flags(void);
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@@ -167,7 +167,6 @@
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 extern __printf(1, 2) int kdb_printf(const char *, ...);
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 typedef __printf(1, 2) int (*kdb_printf_t)(const char *, ...);
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-#define in_kdb_printk()	(kdb_trap_printk)
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 extern void kdb_init(int level);
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 /* Access to kdb specific polling devices */
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@@ -184,8 +183,6 @@
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 	return cpu;
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 }
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-/* kdb access to register set for stack dumping */
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-extern struct pt_regs *kdb_current_regs;
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 #ifdef CONFIG_KALLSYMS
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 extern const char *kdb_walk_kallsyms(loff_t *pos);
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 #else /* ! CONFIG_KALLSYMS */
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@@ -202,7 +199,6 @@
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 extern int kdb_unregister(char *);
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 #else /* ! CONFIG_KGDB_KDB */
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 static inline __printf(1, 2) int kdb_printf(const char *fmt, ...) { return 0; }
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-#define in_kdb_printk() (0)
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 static inline void kdb_init(int level) {}
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 static inline int kdb_register(char *cmd, kdb_func_t func, char *usage,
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 			       char *help, short minlen) { return 0; }