menuconfig: add support to show hidden options which have prompts
Usage:
Press <Z> to show all config symbols which have prompts.
Quote Tim Bird:
| I've been bitten by this numerous times. I most often
| use ftrace on ARM, but when I go back to x86, I almost
| always go through a sequence of searching for the
| function graph tracer in the menus, then realizing it's
| completely missing until I disable CC_OPTIMIZE_FOR_SIZE.
|
| Is there any way to have the menu item appear, but be
| unsettable unless the SIZE option is disabled? I'm
| not a Kconfig guru...
I myself found this useful too. For example, I need to test
ftrace/tracing and want to be sure all the tracing features are
enabled, so I enter the "Tracers" menu, and press <Z> to
see if there is any config hidden.
I also noticed gconfig and xconfig have a button "Show all options",
but that's a bit too much, and I think normally what we are not
interested in those configs which have no prompt thus can't be
changed by users.
Exmaple:
--- Tracers
-*- Kernel Function Tracer
- - Kernel Function Graph Tracer
[*] Interrupts-off Latency Tracer
- - Preemption-off Latency Tracer
[*] Sysprof Tracer
Here you can see 2 tracers are not selectable, and then can find
out how to make them selectable.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
diff --git a/scripts/kconfig/mconf.c b/scripts/kconfig/mconf.c
index a4a7519..2c83d32 100644
--- a/scripts/kconfig/mconf.c
+++ b/scripts/kconfig/mconf.c
@@ -67,13 +67,15 @@
" there is a delayed response which you may find annoying.\n"
"\n"
" Also, the <TAB> and cursor keys will cycle between <Select>,\n"
-" <Exit> and <Help>\n"
+" <Exit> and <Help>.\n"
"\n"
"o To get help with an item, use the cursor keys to highlight <Help>\n"
-" and Press <ENTER>.\n"
+" and press <ENTER>.\n"
"\n"
" Shortcut: Press <H> or <?>.\n"
"\n"
+"o To show hidden options, press <Z>.\n"
+"\n"
"\n"
"Radiolists (Choice lists)\n"
"-----------\n"
@@ -272,6 +274,7 @@
static struct menu *current_menu;
static int child_count;
static int single_menu_mode;
+static int show_all_options;
static void conf(struct menu *menu);
static void conf_choice(struct menu *menu);
@@ -346,8 +349,16 @@
int type, tmp, doint = 2;
tristate val;
char ch;
+ bool visible;
- if (!menu_is_visible(menu))
+ /*
+ * note: menu_is_visible() has side effect that it will
+ * recalc the value of the symbol.
+ */
+ visible = menu_is_visible(menu);
+ if (show_all_options && !menu_has_prompt(menu))
+ return;
+ else if (!show_all_options && !visible)
return;
sym = menu->sym;
@@ -606,6 +617,9 @@
case 7:
search_conf();
break;
+ case 8:
+ show_all_options = !show_all_options;
+ break;
}
}
}