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ftrace: simplify hexprint 

simplify hex to ascii conversion.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Thomas Gleixner 2008-05-12 21:21:00 +02:00
parent bb065afb8e
commit 93dcc6ea09
1 changed files with 5 additions and 18 deletions
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23
kernel/trace/trace.c
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@ -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);
}