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b0fe551000
'make randconfig' uses glibc's rand function, and the seed of that PRNG is set via: srand(time(NULL)); But 'time()' only increases once every second - freezing the randconfig result within a single second. My Nehalem testbox does randconfig much faster than 1 second and i have a few scripts that do 'randconfig until condition X' loops. Those scripts currently waste a lot of CPU time due to randconfig changing its seed only once per second currently. Change the seed to be micrseconds based. (I checked the statistical spread of the seed - the now.tv_sec*now.tv_usec multiplication there further improves it.) Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Roman Zippel <zippel@linux-m68k.org> [sam: fix for systems where usec is zero - noticed by Geert Uytterhoeven] Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
617 lines
12 KiB
C
617 lines
12 KiB
C
/*
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* Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
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* Released under the terms of the GNU GPL v2.0.
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*/
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#include <locale.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#define LKC_DIRECT_LINK
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#include "lkc.h"
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static void conf(struct menu *menu);
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static void check_conf(struct menu *menu);
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enum {
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ask_all,
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ask_new,
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ask_silent,
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set_default,
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set_yes,
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set_mod,
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set_no,
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set_random
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} input_mode = ask_all;
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char *defconfig_file;
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static int indent = 1;
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static int valid_stdin = 1;
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static int sync_kconfig;
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static int conf_cnt;
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static char line[128];
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static struct menu *rootEntry;
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static char nohelp_text[] = N_("Sorry, no help available for this option yet.\n");
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static const char *get_help(struct menu *menu)
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{
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if (menu_has_help(menu))
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return _(menu_get_help(menu));
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else
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return nohelp_text;
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}
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static void strip(char *str)
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{
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char *p = str;
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int l;
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while ((isspace(*p)))
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p++;
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l = strlen(p);
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if (p != str)
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memmove(str, p, l + 1);
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if (!l)
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return;
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p = str + l - 1;
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while ((isspace(*p)))
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*p-- = 0;
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}
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static void check_stdin(void)
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{
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if (!valid_stdin) {
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printf(_("aborted!\n\n"));
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printf(_("Console input/output is redirected. "));
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printf(_("Run 'make oldconfig' to update configuration.\n\n"));
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exit(1);
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}
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}
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static int conf_askvalue(struct symbol *sym, const char *def)
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{
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enum symbol_type type = sym_get_type(sym);
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if (!sym_has_value(sym))
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printf(_("(NEW) "));
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line[0] = '\n';
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line[1] = 0;
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if (!sym_is_changable(sym)) {
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printf("%s\n", def);
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line[0] = '\n';
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line[1] = 0;
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return 0;
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}
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switch (input_mode) {
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case ask_new:
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case ask_silent:
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if (sym_has_value(sym)) {
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printf("%s\n", def);
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return 0;
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}
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check_stdin();
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case ask_all:
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fflush(stdout);
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fgets(line, 128, stdin);
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return 1;
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default:
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break;
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}
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switch (type) {
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case S_INT:
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case S_HEX:
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case S_STRING:
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printf("%s\n", def);
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return 1;
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default:
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;
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}
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printf("%s", line);
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return 1;
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}
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int conf_string(struct menu *menu)
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{
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struct symbol *sym = menu->sym;
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const char *def;
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while (1) {
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printf("%*s%s ", indent - 1, "", _(menu->prompt->text));
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printf("(%s) ", sym->name);
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def = sym_get_string_value(sym);
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if (sym_get_string_value(sym))
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printf("[%s] ", def);
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if (!conf_askvalue(sym, def))
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return 0;
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switch (line[0]) {
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case '\n':
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break;
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case '?':
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/* print help */
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if (line[1] == '\n') {
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printf("\n%s\n", get_help(menu));
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def = NULL;
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break;
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}
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default:
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line[strlen(line)-1] = 0;
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def = line;
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}
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if (def && sym_set_string_value(sym, def))
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return 0;
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}
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}
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static int conf_sym(struct menu *menu)
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{
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struct symbol *sym = menu->sym;
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int type;
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tristate oldval, newval;
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while (1) {
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printf("%*s%s ", indent - 1, "", _(menu->prompt->text));
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if (sym->name)
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printf("(%s) ", sym->name);
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type = sym_get_type(sym);
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putchar('[');
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oldval = sym_get_tristate_value(sym);
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switch (oldval) {
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case no:
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putchar('N');
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break;
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case mod:
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putchar('M');
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break;
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case yes:
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putchar('Y');
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break;
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}
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if (oldval != no && sym_tristate_within_range(sym, no))
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printf("/n");
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if (oldval != mod && sym_tristate_within_range(sym, mod))
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printf("/m");
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if (oldval != yes && sym_tristate_within_range(sym, yes))
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printf("/y");
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if (menu_has_help(menu))
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printf("/?");
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printf("] ");
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if (!conf_askvalue(sym, sym_get_string_value(sym)))
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return 0;
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strip(line);
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switch (line[0]) {
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case 'n':
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case 'N':
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newval = no;
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if (!line[1] || !strcmp(&line[1], "o"))
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break;
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continue;
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case 'm':
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case 'M':
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newval = mod;
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if (!line[1])
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break;
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continue;
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case 'y':
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case 'Y':
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newval = yes;
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if (!line[1] || !strcmp(&line[1], "es"))
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break;
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continue;
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case 0:
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newval = oldval;
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break;
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case '?':
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goto help;
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default:
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continue;
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}
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if (sym_set_tristate_value(sym, newval))
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return 0;
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help:
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printf("\n%s\n", get_help(menu));
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}
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}
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static int conf_choice(struct menu *menu)
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{
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struct symbol *sym, *def_sym;
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struct menu *child;
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int type;
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bool is_new;
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sym = menu->sym;
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type = sym_get_type(sym);
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is_new = !sym_has_value(sym);
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if (sym_is_changable(sym)) {
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conf_sym(menu);
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sym_calc_value(sym);
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switch (sym_get_tristate_value(sym)) {
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case no:
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return 1;
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case mod:
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return 0;
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case yes:
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break;
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}
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} else {
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switch (sym_get_tristate_value(sym)) {
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case no:
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return 1;
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case mod:
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printf("%*s%s\n", indent - 1, "", _(menu_get_prompt(menu)));
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return 0;
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case yes:
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break;
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}
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}
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while (1) {
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int cnt, def;
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printf("%*s%s\n", indent - 1, "", _(menu_get_prompt(menu)));
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def_sym = sym_get_choice_value(sym);
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cnt = def = 0;
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line[0] = 0;
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for (child = menu->list; child; child = child->next) {
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if (!menu_is_visible(child))
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continue;
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if (!child->sym) {
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printf("%*c %s\n", indent, '*', _(menu_get_prompt(child)));
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continue;
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}
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cnt++;
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if (child->sym == def_sym) {
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def = cnt;
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printf("%*c", indent, '>');
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} else
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printf("%*c", indent, ' ');
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printf(" %d. %s", cnt, _(menu_get_prompt(child)));
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if (child->sym->name)
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printf(" (%s)", child->sym->name);
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if (!sym_has_value(child->sym))
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printf(_(" (NEW)"));
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printf("\n");
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}
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printf(_("%*schoice"), indent - 1, "");
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if (cnt == 1) {
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printf("[1]: 1\n");
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goto conf_childs;
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}
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printf("[1-%d", cnt);
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if (menu_has_help(menu))
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printf("?");
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printf("]: ");
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switch (input_mode) {
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case ask_new:
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case ask_silent:
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if (!is_new) {
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cnt = def;
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printf("%d\n", cnt);
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break;
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}
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check_stdin();
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case ask_all:
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fflush(stdout);
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fgets(line, 128, stdin);
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strip(line);
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if (line[0] == '?') {
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printf("\n%s\n", get_help(menu));
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continue;
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}
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if (!line[0])
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cnt = def;
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else if (isdigit(line[0]))
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cnt = atoi(line);
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else
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continue;
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break;
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default:
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break;
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}
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conf_childs:
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for (child = menu->list; child; child = child->next) {
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if (!child->sym || !menu_is_visible(child))
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continue;
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if (!--cnt)
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break;
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}
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if (!child)
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continue;
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if (line[strlen(line) - 1] == '?') {
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printf("\n%s\n", get_help(child));
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continue;
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}
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sym_set_choice_value(sym, child->sym);
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for (child = child->list; child; child = child->next) {
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indent += 2;
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conf(child);
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indent -= 2;
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}
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return 1;
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}
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}
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static void conf(struct menu *menu)
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{
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struct symbol *sym;
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struct property *prop;
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struct menu *child;
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if (!menu_is_visible(menu))
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return;
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sym = menu->sym;
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prop = menu->prompt;
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if (prop) {
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const char *prompt;
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switch (prop->type) {
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case P_MENU:
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if (input_mode == ask_silent && rootEntry != menu) {
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check_conf(menu);
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return;
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}
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case P_COMMENT:
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prompt = menu_get_prompt(menu);
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if (prompt)
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printf("%*c\n%*c %s\n%*c\n",
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indent, '*',
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indent, '*', _(prompt),
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indent, '*');
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default:
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;
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}
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}
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if (!sym)
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goto conf_childs;
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if (sym_is_choice(sym)) {
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conf_choice(menu);
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if (sym->curr.tri != mod)
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return;
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goto conf_childs;
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}
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switch (sym->type) {
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case S_INT:
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case S_HEX:
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case S_STRING:
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conf_string(menu);
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break;
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default:
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conf_sym(menu);
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break;
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}
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conf_childs:
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if (sym)
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indent += 2;
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for (child = menu->list; child; child = child->next)
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conf(child);
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if (sym)
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indent -= 2;
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}
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static void check_conf(struct menu *menu)
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{
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struct symbol *sym;
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struct menu *child;
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if (!menu_is_visible(menu))
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return;
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sym = menu->sym;
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if (sym && !sym_has_value(sym)) {
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if (sym_is_changable(sym) ||
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(sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
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if (!conf_cnt++)
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printf(_("*\n* Restart config...\n*\n"));
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rootEntry = menu_get_parent_menu(menu);
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conf(rootEntry);
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}
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}
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for (child = menu->list; child; child = child->next)
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check_conf(child);
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}
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int main(int ac, char **av)
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{
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int opt;
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const char *name;
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struct stat tmpstat;
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setlocale(LC_ALL, "");
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bindtextdomain(PACKAGE, LOCALEDIR);
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textdomain(PACKAGE);
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while ((opt = getopt(ac, av, "osdD:nmyrh")) != -1) {
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switch (opt) {
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case 'o':
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input_mode = ask_silent;
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break;
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case 's':
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input_mode = ask_silent;
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sync_kconfig = 1;
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break;
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case 'd':
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input_mode = set_default;
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break;
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case 'D':
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input_mode = set_default;
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defconfig_file = optarg;
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break;
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case 'n':
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input_mode = set_no;
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break;
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case 'm':
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input_mode = set_mod;
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break;
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case 'y':
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input_mode = set_yes;
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break;
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case 'r':
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{
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struct timeval now;
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unsigned int seed;
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/*
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* Use microseconds derived seed,
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* compensate for systems where it may be zero
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*/
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gettimeofday(&now, NULL);
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seed = (unsigned int)((now.tv_sec + 1) * (now.tv_usec + 1));
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srand(seed);
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input_mode = set_random;
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break;
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}
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case 'h':
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printf(_("See README for usage info\n"));
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exit(0);
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break;
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default:
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fprintf(stderr, _("See README for usage info\n"));
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exit(1);
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}
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}
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if (ac == optind) {
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printf(_("%s: Kconfig file missing\n"), av[0]);
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exit(1);
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}
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name = av[optind];
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conf_parse(name);
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//zconfdump(stdout);
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if (sync_kconfig) {
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if (stat(".config", &tmpstat)) {
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fprintf(stderr, _("***\n"
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"*** You have not yet configured your kernel!\n"
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"*** (missing kernel .config file)\n"
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"***\n"
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"*** Please run some configurator (e.g. \"make oldconfig\" or\n"
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"*** \"make menuconfig\" or \"make xconfig\").\n"
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"***\n"));
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exit(1);
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}
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}
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switch (input_mode) {
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case set_default:
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if (!defconfig_file)
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defconfig_file = conf_get_default_confname();
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if (conf_read(defconfig_file)) {
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printf(_("***\n"
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"*** Can't find default configuration \"%s\"!\n"
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"***\n"), defconfig_file);
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exit(1);
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}
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break;
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case ask_silent:
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case ask_all:
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case ask_new:
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conf_read(NULL);
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break;
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case set_no:
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case set_mod:
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case set_yes:
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case set_random:
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name = getenv("KCONFIG_ALLCONFIG");
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if (name && !stat(name, &tmpstat)) {
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conf_read_simple(name, S_DEF_USER);
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break;
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}
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switch (input_mode) {
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case set_no: name = "allno.config"; break;
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case set_mod: name = "allmod.config"; break;
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case set_yes: name = "allyes.config"; break;
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case set_random: name = "allrandom.config"; break;
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default: break;
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}
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if (!stat(name, &tmpstat))
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conf_read_simple(name, S_DEF_USER);
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else if (!stat("all.config", &tmpstat))
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conf_read_simple("all.config", S_DEF_USER);
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break;
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default:
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break;
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}
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if (sync_kconfig) {
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if (conf_get_changed()) {
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name = getenv("KCONFIG_NOSILENTUPDATE");
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if (name && *name) {
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fprintf(stderr,
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_("\n*** Kernel configuration requires explicit update.\n\n"));
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return 1;
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}
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}
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valid_stdin = isatty(0) && isatty(1) && isatty(2);
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}
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switch (input_mode) {
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case set_no:
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conf_set_all_new_symbols(def_no);
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break;
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case set_yes:
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conf_set_all_new_symbols(def_yes);
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break;
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case set_mod:
|
|
conf_set_all_new_symbols(def_mod);
|
|
break;
|
|
case set_random:
|
|
conf_set_all_new_symbols(def_random);
|
|
break;
|
|
case set_default:
|
|
conf_set_all_new_symbols(def_default);
|
|
break;
|
|
case ask_new:
|
|
case ask_all:
|
|
rootEntry = &rootmenu;
|
|
conf(&rootmenu);
|
|
input_mode = ask_silent;
|
|
/* fall through */
|
|
case ask_silent:
|
|
/* Update until a loop caused no more changes */
|
|
do {
|
|
conf_cnt = 0;
|
|
check_conf(&rootmenu);
|
|
} while (conf_cnt);
|
|
break;
|
|
}
|
|
|
|
if (sync_kconfig) {
|
|
/* silentoldconfig is used during the build so we shall update autoconf.
|
|
* All other commands are only used to generate a config.
|
|
*/
|
|
if (conf_get_changed() && conf_write(NULL)) {
|
|
fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
|
|
exit(1);
|
|
}
|
|
if (conf_write_autoconf()) {
|
|
fprintf(stderr, _("\n*** Error during update of the kernel configuration.\n\n"));
|
|
return 1;
|
|
}
|
|
} else {
|
|
if (conf_write(NULL)) {
|
|
fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
|
|
exit(1);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|