On Tue, 2008-05-13 at 12:55 +0300, Ilpo Järvinen wrote:

On Mon, 12 May 2008, Harvey Harrison wrote:

quoted

Add a common hex array in hexdump.c so everyone can use it.

Add a common hi/lo helper to avoid the shifting masking that is
done to get the upper and lower nibbles of a byte value.

Pull the pack_hex_byte helper from kgdb as it is opencoded many
places in the tree that will be consolidated.

Signed-off-by: Harvey Harrison <redacted>
---
 
-#define hex_asc(x)	"0123456789abcdef"[x]
+
+extern const char hex_asc[];
+#define hex_asc_lo(x)	hex_asc[((x) & 0x0f)]
+#define hex_asc_hi(x)	hex_asc[((x) & 0xf0) >> 4]
+
+static inline char *pack_hex_byte(char *buf, u8 byte)
+{
+	*buf++ = hex_asc_hi(byte);
+	*buf++ = hex_asc_lo(byte);
+	return buf;
+}

Any idea how much this will bloat kernel once it has, lets say 100 
users? 5k, 10k?

No more than the existing users do open-coding the same thing all over
the place.  If it becomes a problem, this can be out-of-lined, but
the savings are not much.

Harvey

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