disable kernel build waring

hc

2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b

 kernel/arch/x86/boot/string.h
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@@ -11,10 +11,7 @@
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 void *memset(void *dst, int c, size_t len);
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 int memcmp(const void *s1, const void *s2, size_t len);
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-/*
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- * Access builtin version by default. If one needs to use optimized version,
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- * do "undef memcpy" in .c file and link against right string.c
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- */
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+/* Access builtin version by default. */
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 #define memcpy(d,s,l) __builtin_memcpy(d,s,l)
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 #define memset(d,c,l) __builtin_memset(d,c,l)
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 #define memcmp	__builtin_memcmp
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@@ -29,4 +26,6 @@
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 extern unsigned long long simple_strtoull(const char *cp, char **endp,
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 					  unsigned int base);
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+int kstrtoull(const char *s, unsigned int base, unsigned long long *res);
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+int boot_kstrtoul(const char *s, unsigned int base, unsigned long *res);
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 #endif /* BOOT_STRING_H */