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Commit d1c1b121 authored by Rasmus Villemoes's avatar Rasmus Villemoes Committed by Linus Torvalds
Browse files

lib/vsprintf.c: another small hack 



Making ZEROPAD == '0'-' ', we can eliminate a few more instructions.

Signed-off-by: default avatarRasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 3ea8d440

lib/vsprintf.c

+4 −3
Original line number Diff line number Diff line
@@ -341,10 +341,10 @@ int num_to_str(char *buf, int size, unsigned long long num) 
}



#define SIGN	1		/* unsigned/signed, must be 1 */

#define ZEROPAD	2		/* pad with zero */

#define LEFT	2		/* left justified */

#define PLUS	4		/* show plus */

#define SPACE	8		/* space if plus */

#define LEFT	16		/* left justified */

#define ZEROPAD	16		/* pad with zero, must be 16 == '0' - ' ' */

#define SMALL	32		/* use lowercase in hex (must be 32 == 0x20) */

#define SPECIAL	64		/* prefix hex with "0x", octal with "0" */
@@ -467,7 +467,8 @@ char *number(char *buf, char *end, unsigned long long num, 
	}

	/* zero or space padding */

	if (!(spec.flags & LEFT)) {

		char c = (spec.flags & ZEROPAD) ? '0' : ' ';

		char c = ' ' + (spec.flags & ZEROPAD);

		BUILD_BUG_ON(' ' + ZEROPAD != '0');

		while (--spec.field_width >= 0) {

			if (buf < end)

				*buf = c;