disable kernel build waring

hc

2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b

 kernel/include/linux/trace_seq.h
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@@ -12,7 +12,7 @@
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  */
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 struct trace_seq {
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-	unsigned char		buffer[PAGE_SIZE];
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+	char			buffer[PAGE_SIZE];
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 	struct seq_buf		seq;
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 	int			full;
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 };
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@@ -51,7 +51,7 @@
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  * that is about to be written to and then return the result
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  * of that write.
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  */
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-static inline unsigned char *
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+static inline char *
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 trace_seq_buffer_ptr(struct trace_seq *s)
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 {
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 	return s->buffer + seq_buf_used(&s->seq);
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@@ -92,6 +92,10 @@
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 extern void trace_seq_bitmask(struct trace_seq *s, const unsigned long *maskp,
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 			     int nmaskbits);
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+extern int trace_seq_hex_dump(struct trace_seq *s, const char *prefix_str,
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+			      int prefix_type, int rowsize, int groupsize,
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+			      const void *buf, size_t len, bool ascii);
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+
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 #else /* CONFIG_TRACING */
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 static inline void trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
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 {