Commit 5b8ad96d authored Feb 28, 2018 by Rasmus Villemoes Committed by Masahiro Yamada Mar 05, 2018

fixdep: remove some false CONFIG_ matches

The string CONFIG_ quite often appears after other alphanumerics,
meaning that that instance cannot be referencing a Kconfig
symbol. Omitting these means make has fewer files to stat() when
deciding what needs to be rebuilt - for a defconfig build, this seems to
remove about 2% of the (wildcard ...) lines from the .o.cmd files.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

parent 14a596a7

scripts/basic/fixdep.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -225,8 +225,13 @@ static int str_ends_with(const char s, int slen, const char sub)
		static void parse_config_file(const char *p)
		{
		const char q, r;
		const char *start = p;

		while ((p = strstr(p, "CONFIG_"))) {
		if (p > start && (isalnum(p[-1]) \|\| p[-1] == '_')) {
		p += 7;
		continue;
		}
		p += 7;
		q = p;
		while (q && (isalnum(q) \|\| *q == '_'))

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