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authorPeter Korsgaard <jacmet@sunsite.dk>2010-07-23 12:15:18 (GMT)
committer Peter Korsgaard <jacmet@sunsite.dk>2010-07-23 12:27:30 (GMT)
commit3435c1afb58307240be8e4607b5bb7d239fac4e9 (patch)
treee1ba65ccf220652f3827f9239d2644a7f26d4737
parentf4800b4654ae529d23b3c9697123c94ffce313d0 (diff)
downloadbuildroot-3435c1afb58307240be8e4607b5bb7d239fac4e9.tar.gz
buildroot-3435c1afb58307240be8e4607b5bb7d239fac4e9.tar.bz2
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: Peter Korsgaard <jacmet@sunsite.dk>
-rw-r--r--package/config/confdata.c22
1 files changed, 19 insertions, 3 deletions
diff --git a/package/config/confdata.c b/package/config/confdata.c
index 728f708..3842470 100644
--- a/package/config/confdata.c
+++ b/package/config/confdata.c
@@ -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;