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Commit 93dcc6ea authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

ftrace: simplify hexprint 



simplify hex to ascii conversion.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent bb065afb

kernel/trace/trace.c

+5 −18
Original line number Diff line number Diff line
@@ -248,19 +248,18 @@ trace_seq_putmem(struct trace_seq *s, void *mem, size_t len) 
}



#define HEX_CHARS 17

static const char hex2asc[] = "0123456789abcdef";



static int

trace_seq_putmem_hex(struct trace_seq *s, void *mem, size_t len)

{

	unsigned char hex[HEX_CHARS];

	unsigned char *data;

	unsigned char *data = mem;

	unsigned char byte;

	int i, j;



	BUG_ON(len >= HEX_CHARS);



	data = mem;



#ifdef __BIG_ENDIAN

	for (i = 0, j = 0; i < len; i++) {

#else
@@ -268,22 +267,10 @@ trace_seq_putmem_hex(struct trace_seq *s, void *mem, size_t len) 
#endif

		byte = data[i];



		hex[j]   = byte & 0x0f;

		if (hex[j] >= 10)

			hex[j] += 'a' - 10;

		else

			hex[j] += '0';

		j++;



		hex[j] = byte >> 4;

		if (hex[j] >= 10)

			hex[j] += 'a' - 10;

		else

			hex[j] += '0';

		j++;

		hex[j++] = hex2asc[byte & 0x0f];

		hex[j++] = hex2asc[byte >> 4];

	}

	hex[j] = ' ';

	j++;

	hex[j++] = ' ';



	return trace_seq_putmem(s, hex, j);

}