Commit 452d4c86 authored by Randy Dunlap's avatar Randy Dunlap Committed by Masahiro Yamada

kconfig: update user kconfig tools doc.

Update Documentation/kbuild/kconfig.txt, which mostly contains
user help for using the kernel config tools.

- Add mention of 'nconfig' embedded help text.
- Make the section on new config symbols readable.
- Correct how to find menuconfig search help.
- Add section on 'nconfig' usage.
- Mention that gconfig has multiple viewing modes/options.
Signed-off-by: default avatarRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
parent 3f9cdee5
...@@ -2,9 +2,9 @@ This file contains some assistance for using "make *config". ...@@ -2,9 +2,9 @@ This file contains some assistance for using "make *config".
Use "make help" to list all of the possible configuration targets. Use "make help" to list all of the possible configuration targets.
The xconfig ('qconf') and menuconfig ('mconf') programs also The xconfig ('qconf'), menuconfig ('mconf'), and nconfig ('nconf')
have embedded help text. Be sure to check it for navigation, programs also have embedded help text. Be sure to check that for
search, and other general help text. navigation, search, and other general help text.
====================================================================== ======================================================================
General General
...@@ -17,13 +17,16 @@ this happens, using a previously working .config file and running ...@@ -17,13 +17,16 @@ this happens, using a previously working .config file and running
for you, so you may find that you need to see what NEW kernel for you, so you may find that you need to see what NEW kernel
symbols have been introduced. symbols have been introduced.
To see a list of new config symbols when using "make oldconfig", use To see a list of new config symbols, use
cp user/some/old.config .config cp user/some/old.config .config
make listnewconfig make listnewconfig
and the config program will list any new symbols, one per line. and the config program will list any new symbols, one per line.
Alternatively, you can use the brute force method:
make oldconfig
scripts/diffconfig .config.old .config | less scripts/diffconfig .config.old .config | less
______________________________________________________________________ ______________________________________________________________________
...@@ -160,7 +163,7 @@ Searching in menuconfig: ...@@ -160,7 +163,7 @@ Searching in menuconfig:
This lists all config symbols that contain "hotplug", This lists all config symbols that contain "hotplug",
e.g., HOTPLUG_CPU, MEMORY_HOTPLUG. e.g., HOTPLUG_CPU, MEMORY_HOTPLUG.
For search help, enter / followed TAB-TAB-TAB (to highlight For search help, enter / followed by TAB-TAB (to highlight
<Help>) and Enter. This will tell you that you can also use <Help>) and Enter. This will tell you that you can also use
regular expressions (regexes) in the search string, so if you regular expressions (regexes) in the search string, so if you
are not interested in MEMORY_HOTPLUG, you could try are not interested in MEMORY_HOTPLUG, you could try
...@@ -202,6 +205,39 @@ Example: ...@@ -202,6 +205,39 @@ Example:
make MENUCONFIG_MODE=single_menu menuconfig make MENUCONFIG_MODE=single_menu menuconfig
======================================================================
nconfig
--------------------------------------------------
nconfig is an alternate text-based configurator. It lists function
keys across the bottom of the terminal (window) that execute commands.
You can also just use the corresponding numeric key to execute the
commands unless you are in a data entry window. E.g., instead of F6
for Save, you can just press 6.
Use F1 for Global help or F3 for the Short help menu.
Searching in nconfig:
You can search either in the menu entry "prompt" strings
or in the configuration symbols.
Use / to begin a search through the menu entries. This does
not support regular expressions. Use <Down> or <Up> for
Next hit and Previous hit, respectively. Use <Esc> to
terminate the search mode.
F8 (SymSearch) searches the configuration symbols for the
given string or regular expression (regex).
NCONFIG_MODE
--------------------------------------------------
This mode shows all sub-menus in one large tree.
Example:
make NCONFIG_MODE=single_menu nconfig
====================================================================== ======================================================================
xconfig xconfig
-------------------------------------------------- --------------------------------------------------
...@@ -230,8 +266,7 @@ gconfig ...@@ -230,8 +266,7 @@ gconfig
Searching in gconfig: Searching in gconfig:
None (gconfig isn't maintained as well as xconfig or menuconfig); There is no search command in gconfig. However, gconfig does
however, gconfig does have a few more viewing choices than have several different viewing choices, modes, and options.
xconfig does.
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