Commit b5f54b07 authored Dec 14, 2009 by André Goddard Rosa Committed by Linus Torvalds Dec 15, 2009

parser: remove unnecessary strlen()



No functional change.  Cache strlen() result to avoid recalculating it up
to 3 times on the worst case.

Reduces code size a little by 32 bytes:
   text    data     bss     dec     hex filename
   1385       0       0    1385     569 lib/parser.o-BEFORE
   1353       0       0    1353     549 lib/parser.o-AFTER

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent e7d2860b

lib/parser.c

+7 −4

Original line number	Diff line number	Diff line
		@@ -56,13 +56,16 @@ static int match_one(char s, const char p, substring_t args[])

		args[argc].from = s;
		switch (*p++) {
		case 's':
		if (strlen(s) == 0)
		case 's': {
		size_t str_len = strlen(s);

		if (str_len == 0)
		return 0;
		else if (len == -1 \|\| len > strlen(s))
		len = strlen(s);
		if (len == -1 \|\| len > str_len)
		len = str_len;
		args[argc].to = s + len;
		break;
		}
		case 'd':
		simple_strtol(s, &args[argc].to, 0);
		goto num;