Commit 3435c1af authored by Peter Korsgaard's avatar Peter Korsgaard
Browse files

kconfig: implement KCONFIG_PROBABILITY for rand{,package}config 



rand{,package}config enables configuration options with 50% probability,
which isn't always what we want in BR (because the "big" configs take a
long time to build and limits the chance of a randconfig detecting a
missing dependency), so introduce a KCONFIG_PROBABILITY environment
variable to tweak the probability between 0 (all options off) and 100
(all options on).

To use, simply set the environment variable before running make or pass
it on the make command line - E.G.

make randpackageconfig KCONFIG_PROBABILITY=10

Signed-off-by: default avatarPeter Korsgaard <jacmet@sunsite.dk>
parent f4800b46

package/config/confdata.c

+19 −3
Original line number Diff line number Diff line
@@ -845,7 +845,16 @@ void conf_set_all_new_symbols(enum conf_def_mode mode) 
	struct symbol *sym, *csym;

	struct property *prop;

	struct expr *e;

	int i, cnt, def;

	int i, cnt, def, prob = 50;



	if (mode == def_random) {

		char *endp, *env = getenv("KCONFIG_PROBABILITY");

		if (env && *env) {

			int tmp = (int)strtol(env, &endp, 10);

			if (*endp == '\0' && tmp >= 0 && tmp <= 100)

				prob = tmp;

		}

	}



	for_all_symbols(i, sym) {

		if (sym_has_value(sym))
@@ -864,8 +873,15 @@ void conf_set_all_new_symbols(enum conf_def_mode mode) 
				sym->def[S_DEF_USER].tri = no;

				break;

			case def_random:

				cnt = sym_get_type(sym) == S_TRISTATE ? 3 : 2;

				sym->def[S_DEF_USER].tri = (tristate)(rand() % cnt);

				cnt = (rand() % 100) - (100 - prob);

				if (cnt < 0)

					sym->def[S_DEF_USER].tri = no;

				else

					if ((sym_get_type(sym) == S_TRISTATE)

					    && (cnt > prob/2))

						sym->def[S_DEF_USER].tri = mod;

					else

						sym->def[S_DEF_USER].tri = yes;

				break;

			default:

				continue;