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Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes

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* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes:
  kconfig: improve seed in randconfig
  kconfig: fix randconfig for choice blocks
This commit is contained in:
Linus Torvalds 2009-03-22 11:41:02 -07:00
commit 59fcbddaff
2 changed files with 51 additions and 16 deletions
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16
scripts/kconfig/conf.c
View File

@ -11,6 +11,7 @@
#include <time.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/time.h>
#define LKC_DIRECT_LINK
#include "lkc.h"
@ -464,9 +465,22 @@ int main(int ac, char **av)
input_mode = set_yes;
break;
case 'r':
{
struct timeval now;
unsigned int seed;
/*
* Use microseconds derived seed,
* compensate for systems where it may be zero
*/
gettimeofday(&now, NULL);
seed = (unsigned int)((now.tv_sec + 1) * (now.tv_usec + 1));
srand(seed);
input_mode = set_random;
srand(time(NULL));
break;
}
case 'h':
printf(_("See README for usage info\n"));
exit(0);

51
scripts/kconfig/confdata.c
View File

@ -843,7 +843,7 @@ void conf_set_all_new_symbols(enum conf_def_mode mode)
default:
continue;
}
if (!sym_is_choice(sym) || mode != def_random)
if (!(sym_is_choice(sym) && mode == def_random))
sym->flags |= SYMBOL_DEF_USER;
break;
default:
@ -856,28 +856,49 @@ void conf_set_all_new_symbols(enum conf_def_mode mode)
if (mode != def_random)
return;
/*
* We have different type of choice blocks.
* If curr.tri equal to mod then we can select several
* choice symbols in one block.
* In this case we do nothing.
* If curr.tri equal yes then only one symbol can be
* selected in a choice block and we set it to yes,
* and the rest to no.
*/
for_all_symbols(i, csym) {
if (sym_has_value(csym) || !sym_is_choice(csym))
continue;
sym_calc_value(csym);
if (csym->curr.tri != yes)
continue;
prop = sym_get_choice_prop(csym);
def = -1;
while (1) {
cnt = 0;
expr_list_for_each_sym(prop->expr, e, sym) {
if (sym->visible == no)
continue;
if (def == cnt++) {
csym->def[S_DEF_USER].val = sym;
break;
}
/* count entries in choice block */
cnt = 0;
expr_list_for_each_sym(prop->expr, e, sym)
cnt++;
/*
* find a random value and set it to yes,
* set the rest to no so we have only one set
*/
def = (rand() % cnt);
cnt = 0;
expr_list_for_each_sym(prop->expr, e, sym) {
if (def == cnt++) {
sym->def[S_DEF_USER].tri = yes;
csym->def[S_DEF_USER].val = sym;
}
else {
sym->def[S_DEF_USER].tri = no;
}
if (def >= 0 || cnt < 2)
break;
def = (rand() % cnt) + 1;
}
csym->flags |= SYMBOL_DEF_USER;
/* clear VALID to get value calculated */
csym->flags &= ~(SYMBOL_VALID);
}
}