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![Tetsuo Handa](/assets/img/avatar_default.png)
Since kernel configs provided by syzbot are close to "make allyesconfig", it takes long time to rebuild. This is especially waste of time when we need to rebuild for many times (e.g. doing manual printk() inspection, bisect operations). We can save time if we can exclude modules which are irrelevant to each problem. But "make localmodconfig" cannot exclude modules which are built into vmlinux because /sbin/lsmod output is used as the source of modules. Therefore, this patch adds "make yes2modconfig" which converts from =y to =m if possible. After confirming that the interested problem is still reproducible, we can try "make localmodconfig" (and/or manually tune based on "Modules linked in:" line) in order to exclude modules which are irrelevant to the interested problem. While we are at it, this patch also adds "make mod2yesconfig" which converts from =m to =y in case someone wants to convert from =m to =y after "make localmodconfig". Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
160 lines
3.8 KiB
C
160 lines
3.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
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*/
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#ifndef LKC_H
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#define LKC_H
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#include "expr.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "lkc_proto.h"
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#define SRCTREE "srctree"
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#ifndef PACKAGE
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#define PACKAGE "linux"
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#endif
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#ifndef CONFIG_
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#define CONFIG_ "CONFIG_"
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#endif
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static inline const char *CONFIG_prefix(void)
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{
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return getenv( "CONFIG_" ) ?: CONFIG_;
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}
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#undef CONFIG_
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#define CONFIG_ CONFIG_prefix()
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enum conf_def_mode {
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def_default,
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def_yes,
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def_mod,
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def_y2m,
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def_m2y,
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def_no,
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def_random
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};
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extern int yylineno;
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void zconfdump(FILE *out);
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void zconf_starthelp(void);
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FILE *zconf_fopen(const char *name);
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void zconf_initscan(const char *name);
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void zconf_nextfile(const char *name);
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int zconf_lineno(void);
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const char *zconf_curname(void);
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/* confdata.c */
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const char *conf_get_configname(void);
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void sym_set_change_count(int count);
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void sym_add_change_count(int count);
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bool conf_set_all_new_symbols(enum conf_def_mode mode);
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void conf_rewrite_mod_or_yes(enum conf_def_mode mode);
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void set_all_choice_values(struct symbol *csym);
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/* confdata.c and expr.c */
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static inline void xfwrite(const void *str, size_t len, size_t count, FILE *out)
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{
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assert(len != 0);
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if (fwrite(str, len, count, out) != count)
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fprintf(stderr, "Error in writing or end of file.\n");
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}
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/* menu.c */
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void _menu_init(void);
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void menu_warn(struct menu *menu, const char *fmt, ...);
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struct menu *menu_add_menu(void);
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void menu_end_menu(void);
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void menu_add_entry(struct symbol *sym);
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void menu_add_dep(struct expr *dep);
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void menu_add_visibility(struct expr *dep);
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struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep);
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void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep);
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void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep);
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void menu_add_option_modules(void);
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void menu_add_option_defconfig_list(void);
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void menu_add_option_allnoconfig_y(void);
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void menu_finalize(struct menu *parent);
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void menu_set_type(int type);
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/* util.c */
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struct file *file_lookup(const char *name);
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void *xmalloc(size_t size);
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void *xcalloc(size_t nmemb, size_t size);
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void *xrealloc(void *p, size_t size);
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char *xstrdup(const char *s);
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char *xstrndup(const char *s, size_t n);
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/* lexer.l */
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int yylex(void);
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struct gstr {
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size_t len;
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char *s;
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/*
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* when max_width is not zero long lines in string s (if any) get
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* wrapped not to exceed the max_width value
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*/
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int max_width;
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};
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struct gstr str_new(void);
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void str_free(struct gstr *gs);
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void str_append(struct gstr *gs, const char *s);
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void str_printf(struct gstr *gs, const char *fmt, ...);
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const char *str_get(struct gstr *gs);
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/* symbol.c */
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void sym_clear_all_valid(void);
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struct symbol *sym_choice_default(struct symbol *sym);
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struct property *sym_get_range_prop(struct symbol *sym);
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const char *sym_get_string_default(struct symbol *sym);
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struct symbol *sym_check_deps(struct symbol *sym);
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struct symbol *prop_get_symbol(struct property *prop);
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static inline tristate sym_get_tristate_value(struct symbol *sym)
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{
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return sym->curr.tri;
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}
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static inline struct symbol *sym_get_choice_value(struct symbol *sym)
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{
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return (struct symbol *)sym->curr.val;
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}
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static inline bool sym_set_choice_value(struct symbol *ch, struct symbol *chval)
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{
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return sym_set_tristate_value(chval, yes);
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}
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static inline bool sym_is_choice(struct symbol *sym)
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{
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return sym->flags & SYMBOL_CHOICE ? true : false;
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}
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static inline bool sym_is_choice_value(struct symbol *sym)
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{
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return sym->flags & SYMBOL_CHOICEVAL ? true : false;
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}
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static inline bool sym_is_optional(struct symbol *sym)
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{
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return sym->flags & SYMBOL_OPTIONAL ? true : false;
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}
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static inline bool sym_has_value(struct symbol *sym)
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{
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return sym->flags & SYMBOL_DEF_USER ? true : false;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* LKC_H */
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