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2025-11-01kconfig/nconf: Initialize the default locale at startupJakub Horký1-0/+3
Fix bug where make nconfig doesn't initialize the default locale, which causes ncurses menu borders to be displayed incorrectly (lqqqqk) in UTF-8 terminals that don't support VT100 ACS by default, such as PuTTY. Signed-off-by: Jakub Horký <jakub.git@horky.net> Link: https://patch.msgid.link/20251014144405.3975275-2-jakub.git@horky.net [nathan: Alphabetize locale.h include] Signed-off-by: Nathan Chancellor <nathan@kernel.org>
2025-11-01kconfig/mconf: Initialize the default locale at startupJakub Horký1-0/+3
Fix bug where make menuconfig doesn't initialize the default locale, which causes ncurses menu borders to be displayed incorrectly (lqqqqk) in UTF-8 terminals that don't support VT100 ACS by default, such as PuTTY. Signed-off-by: Jakub Horký <jakub.git@horky.net> Link: https://patch.msgid.link/20251014154933.3990990-1-jakub.git@horky.net [nathan: Alphabetize locale.h include] Signed-off-by: Nathan Chancellor <nathan@kernel.org>
2025-10-07kconfig: Avoid prompting for transitional symbolsKees Cook6-1/+61
The "transitional" symbol keyword, while working with the "olddefconfig" target, was prompting during "oldconfig". This occurred because these symbols were not being marked as user-defined when they received values from transitional symbols that had user values. The "olddefconfig" target explicitly doesn't prompt for anything, so this deficiency wasn't noticed. The issue manifested when a symbol's value came from a transitional symbol's user value but the receiving symbol wasn't marked with SYMBOL_DEF_USER. Thus the "oldconfig" logic would then prompt for these symbols unnecessarily. Check after value calculation whether a symbol without a user value gets its value from a single transitional symbol that does have a user value. In such cases, mark the receiving symbol as user-defined to prevent prompting. Update regression tests to verify that symbols with transitional defaults are not prompted in "oldconfig", except when conditional defaults evaluate to 'no' and should legitimately be prompted. Build tested with "make testconfig". Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Closes: https://lore.kernel.org/lkml/CAHk-=wgZjUk4Cy2XgNkTrQoO8XCmNUHrTe5D519Fij1POK+3qw@mail.gmail.com/ Fixes: f9afce4f32e9 ("kconfig: Add transitional symbol attribute for migration support") Cc: Vegard Nossum <vegard.nossum@oracle.com> Link: https://lore.kernel.org/r/20250930154514.it.623-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org>
2025-10-01Merge tag 'kbuild-6.18-1' of ↵Linus Torvalds2-5/+16
git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux Pull Kbuild updates from Nathan Chancellor: - Extend modules.builtin.modinfo to include module aliases from MODULE_DEVICE_TABLE for builtin modules so that userspace tools (such as kmod) can verify that a particular module alias will be handled by a builtin module - Bump the minimum version of LLVM for building the kernel to 15.0.0 - Upgrade several userspace API checks in headers_check.pl to errors - Unify and consolidate CONFIG_WERROR / W=e handling - Turn assembler and linker warnings into errors with CONFIG_WERROR / W=e - Respect CONFIG_WERROR / W=e when building userspace programs (userprogs) - Enable -Werror unconditionally when building host programs (hostprogs) - Support copy_file_range() and data segment alignment in gen_init_cpio to improve performance on filesystems that support reflinks such as btrfs and XFS - Miscellaneous small changes to scripts and configuration files * tag 'kbuild-6.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux: (47 commits) modpost: Initialize builtin_modname to stop SIGSEGVs Documentation: kbuild: note CONFIG_DEBUG_EFI in reproducible builds kbuild: vmlinux.unstripped should always depend on .vmlinux.export.o modpost: Create modalias for builtin modules modpost: Add modname to mod_device_table alias scsi: Always define blogic_pci_tbl structure kbuild: extract modules.builtin.modinfo from vmlinux.unstripped kbuild: keep .modinfo section in vmlinux.unstripped kbuild: always create intermediate vmlinux.unstripped s390: vmlinux.lds.S: Reorder sections KMSAN: Remove tautological checks objtool: Drop noinstr hack for KCSAN_WEAK_MEMORY lib/Kconfig.debug: Drop CLANG_VERSION check from DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT riscv: Remove ld.lld version checks from many TOOLCHAIN_HAS configs riscv: Unconditionally use linker relaxation riscv: Remove version check for LTO_CLANG selects powerpc: Drop unnecessary initializations in __copy_inst_from_kernel_nofault() mips: Unconditionally select ARCH_HAS_CURRENT_STACK_POINTER arm64: Remove tautological LLVM Kconfig conditions ARM: Clean up definition of ARM_HAS_GROUP_RELOCS ...
2025-09-24kconfig: Add transitional symbol attribute for migration supportKees Cook11-1/+274
During kernel option migrations (e.g. CONFIG_CFI_CLANG to CONFIG_CFI), existing .config files need to maintain backward compatibility while preventing deprecated options from appearing in newly generated configurations. This is challenging with existing Kconfig mechanisms because: 1. Simply removing old options breaks existing .config files. 2. Manually listing an option as "deprecated" leaves it needlessly visible and still writes them to new .config files. 3. Using any method to remove visibility (.e.g no 'prompt', 'if n', etc) prevents the option from being processed at all. Add a "transitional" attribute that creates symbols which are: - Processed during configuration (can influence other symbols' defaults) - Hidden from user menus (no prompts appear) - Omitted from newly written .config files (gets migrated) - Restricted to only having help sections (no defaults, selects, etc) making it truly just a "prior value pass-through" option. The transitional syntax requires a type argument and prevents type redefinition: config NEW_OPTION bool "New option" default OLD_OPTION config OLD_OPTION bool transitional help Transitional config for OLD_OPTION migration. This allows seamless migration: olddefconfig processes existing CONFIG_OLD_OPTION=y settings to enable CONFIG_NEW_OPTION=y, while CONFIG_OLD_OPTION is omitted from newly generated .config files. Added positive and negative testing via "testconfig" make target. Co-developed-by: Vegard Nossum <vegard.nossum@oracle.com> Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Tested-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20250923213422.1105654-2-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org>
2025-09-24kconfig: Fix BrokenPipeError warnings in selftestsKees Cook1-1/+16
The kconfig test harness ("make testconfig") was generating BrokenPipeError warnings when running interactive tests like oldaskconfig and oldconfig: /usr/lib/python3/dist-packages/_pytest/unraisableexception.py:85: PytestUnraisableExceptionWarning: Exception ignored in: <_io.BufferedWriter name=12> Traceback (most recent call last): File "/srv/code/scripts/kconfig/tests/conftest.py", line 127, in oldaskconfig return self._run_conf('--oldaskconfig', dot_config=dot_config, ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ interactive=True, in_keys=in_keys) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ BrokenPipeError: [Errno 32] Broken pipe The issue occurred when the test framework attempted to write to stdin after the conf subprocess had already exited. Wrap stdin write operations in try/except to catch BrokenPipeError and stop sending more input. Add explicit flush() after writes so we can see delivery errors immediately. Ignore BrokenPipeError when closing stdin. Explicitly call wait() to validate subprocess termination. Reviewed-by: Nathan Chancellor <nathan@kernel.org> Tested-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20250923213422.1105654-1-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org>
2025-08-18kconfig: qconf/xconfig: show the OptionsMode radio button setting at startupRandy Dunlap1-0/+13
When qconf (xconfig) exits, it saves the current Option settings for Show Name, Show Debug Info, and Show {Normal|All|Prompt} Options. When it is next run, it loads these Option settings from its config file. It correctly shows the flag settings for Show Name and Show Debug Info, but it does not show which of the 3 Show...Options is set. This can lead to confusing output, e.g., if the user thinks that xconfig is in Show All Options mode but kconfig options which have an unmet dependency are still being listed. Add code to show the radio button for the current Show...Options mode during startup so that it will reflect the current config setting. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Nicolas Schier <nsc@kernel.org> Acked-by: Nicolas Schier <nsc@kernel.org> Link: https://lore.kernel.org/r/20250812223502.1356426-1-rdunlap@infradead.org Signed-off-by: Nathan Chancellor <nathan@kernel.org>
2025-08-18kconfig: nconf: Format and print 'line' without a temporary copyThorsten Blum1-5/+3
Use "%.*s" as the format specifier and supply the 'line' length 'len' to mvwprintw() to format and print each line without making a temporary copy. Remove the temporary buffer. Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev> Reviewed-by: Nicolas Schier <nsc@kernel.org> Link: https://lore.kernel.org/r/20250811161650.37428-2-thorsten.blum@linux.dev Signed-off-by: Nathan Chancellor <nathan@kernel.org>
2025-08-06kconfig: lxdialog: replace strcpy() with strncpy() in inputbox.cSuchit Karunakaran1-2/+4
strcpy() performs no bounds checking and can lead to buffer overflows if the input string exceeds the destination buffer size. This patch replaces it with strncpy(), and null terminates the input string. Signed-off-by: Suchit Karunakaran <suchitkarunakaran@gmail.com> Reviewed-by: Nicolas Schier <nicolas.schier@linux.dev> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-08-06kconfig: lxdialog: replace strcpy with snprintf in print_autowrapSuchit Karunakaran1-2/+1
strcpy() does not perform bounds checking and can lead to buffer overflows if the source string exceeds the destination buffer size. In print_autowrap(), replace strcpy() with snprintf() to safely copy the prompt string into the fixed-size tempstr buffer. Signed-off-by: Suchit Karunakaran <suchitkarunakaran@gmail.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-26kconfig: gconf: refactor text_insert_help()Masahiro Yamada1-25/+8
text_insert_help() and text_insert_msg() share similar code. Refactor text_insert_help() to eliminate the code duplication. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-26kconfig: gconf: remove unneeded variable in text_insert_msgMasahiro Yamada1-2/+1
The 'msg' and 'message' refer to the same pointer. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-26kconfig: gconf: use hyphens in signalsMasahiro Yamada1-7/+7
Using hyphens in signal names is the official convention, even though underscores also work. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-26kconfig: gconf: replace GtkImageMenuItem with GtkMenuItemMasahiro Yamada1-7/+7
GtkImageMenuItem is deprecated with GTK 3.10. [1] Use GtkMenuItem instead. [1]: https://gitlab.gnome.org/GNOME/gtk/-/blob/3.10.0/gtk/deprecated/gtkimagemenuitem.c#L797 Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-26kconfig: gconf: Fix Back button behaviorMasahiro Yamada1-5/+1
Clicking the Back button may navigate to a non-menu hierarchy level. [Example] menu "menu1" config A bool "A" default y config B bool "B" depends on A default y menu "menu2" depends on B config C bool "C" default y endmenu endmenu After being re-parented by menu_finalize(), the menu tree is structured like follows: menu "menu1" \-- A \-- B \-- menu "menu2" \-- C In Single view, visit "menu2" and click the Back button. It should go up to "menu1" and show A, B and "menu2", but instead goes up to A and show only B and "menu2". This is a bug in on_back_clicked(). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-26kconfig: gconf: fix single view to display dependent symbols correctlyMasahiro Yamada1-15/+1
In the following example, the symbol C was never displayed in Single view. Fix the recursion logic so that all symbols are shown. menu "menu" config A bool "A" config B bool "B" depends on A config C bool "C" depends on B endmenu Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-26kconfig: qconf: confine {begin,end}Group to constructor and destructorMasahiro Yamada2-2/+7
Call beginGroup() in the the constructor and endGroup() in the destructor. This looks cleaner. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-26kconfig: qconf: fix ConfigList::updateListAllforAll()Masahiro Yamada1-1/+1
ConfigList::updateListForAll() and ConfigList::updateListAllforAll() are identical. Commit f9b918fae678 ("kconfig: qconf: move ConfigView::updateList(All) to ConfigList class") was a misconversion. Fixes: f9b918fae678 ("kconfig: qconf: move ConfigView::updateList(All) to ConfigList class") Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-26kconfig: add a function to dump all menu entries in a tree-like formatMasahiro Yamada2-0/+75
This is useful for debugging purposes. menu_finalize() re-parents menu entries, and this function can be used to dump the final structure of the menu tree. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-26kconfig: gconf: show GTK version in About dialogMasahiro Yamada1-1/+5
Likewise xconfig, it is useful to display the GTK version in the About dialog. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org>
2025-07-26kconfig: gconf: replace GtkHPaned and GtkVPaned with GtkPanedMasahiro Yamada1-2/+3
GtkHPaned and GtkVPaned are deprecated with GTK 3.2. [1] [2] Use GtkPaned instead. [1]: https://gitlab.gnome.org/GNOME/gtk/-/blob/3.2.0/gtk/gtkhpaned.c#L44 [2]: https://gitlab.gnome.org/GNOME/gtk/-/blob/3.2.0/gtk/gtkvpaned.c#L44 Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-26kconfig: gconf: replace GdkColor with GdkRGBAMasahiro Yamada1-11/+11
GdkColor is deprecated with GTK 3.14. [1] Use GdkRGBA instead. This fixes warnings such as: scripts/kconfig/gconf.c: In function ‘set_node’: scripts/kconfig/gconf.c:138:9: warning: ‘gdk_color_parse’ is deprecated: Use 'gdk_rgba_parse' instead [-Wdeprecated-declarations] 138 | gdk_color_parse(menu_is_visible(menu) ? "Black" : "DarkGray", &color); | ^~~~~~~~~~~~~~~ [1]: https://gitlab.gnome.org/GNOME/gtk/-/blob/3.14.0/gdk/deprecated/gdkcolor.h#L52 Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Randy Dunlap <rdunlap@infradead.org>
2025-07-26kconfig: gconf: replace GtkVbox with GtkBoxMasahiro Yamada1-1/+2
GtkVBox is deprecated with GTK 3.2. [1] Use GtkBox instead. [1]: https://gitlab.gnome.org/GNOME/gtk/-/blob/3.2.0/gtk/gtkvbox.c#L47 Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-26kconfig: gconf: migrate to GTK 3Masahiro Yamada3-146/+135
This commit switches from GTK 2.x to GTK 3, applying the following necessary changes: - Do not include individual headers - GtkObject is gone - Convert Glade to GtkBuilder Link: https://docs.gtk.org/gtk3/migrating-2to3.html Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org>
2025-07-26kconfig: gconf: rename gconf.glade to gconf.uiMasahiro Yamada2-3/+3
The next commit will convert this file to GtkBuilder format. Rename it in advance to reflect the intended format. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org>
2025-07-26kconfig: gconf: rename display_tree_part()Masahiro Yamada1-7/+7
This function recreates the tree store to update the menu content. Rename it to recreate_tree() to better reflect its purpose. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-26kconfig: gconf: use configure-event handler to adjust pane separatorMasahiro Yamada1-18/+7
The size-request event handler is currently used to adjust the position of the horizontal separator in the right pane. However, the size-request signal is not available in GTK 3. Use the configure-event signal instead. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Randy Dunlap <rdunlap@infradead.org>
2025-07-26kconfig: gconf: fix behavior of a menu under a symbol in split viewMasahiro Yamada1-3/+2
A menu can be created under a symbol. [Example] menu "outer menu" config A bool "A" menu "inner menu" depends on A config B bool "B" endmenu endmenu After being re-parented by menu_finalize(), the menu tree is structured like follows: menu "outer menu" \-- A \-- menu "inner menu" \-- B In split view, the symbol A is shown in the right pane, so all of its descendants must also be shown there. This has never worked correctly. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-26kconfig: nconf: Ensure null termination where strncpy is usedShankari Anand2-0/+3
strncpy() does not guarantee null-termination if the source string is longer than the destination buffer. Ensure the buffer is explicitly null-terminated to prevent potential string overflows or undefined behavior. Signed-off-by: Shankari Anand <shankari.ak0208@gmail.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Nicolas Schier <n.schier@avm.de> Acked-by: Nicolas Schier <n.schier@avm.de>
2025-07-02kconfig: gconf: remove GtkHandleBox from gladeMasahiro Yamada1-9/+0
GtkHandleBox is deprecated with GTK 3.4. [1] [1]: https://gitlab.gnome.org/GNOME/gtk/-/blob/3.4.0/gtk/deprecated/gtkhandlebox.c#L426 Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: use gtk_dialog_get_content_area() accessorMasahiro Yamada1-2/+3
GTK 3 removes many implementation details and struct members from its public headers. Use the gtk_check_menu_item_get_active() accessor. [1]: https://gitlab.gnome.org/GNOME/gtk/-/blob/2.24.33/docs/reference/gtk/compiling.sgml#L85 Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: use gtk_check_menu_item_get_active() accessorMasahiro Yamada1-3/+3
GTK 3 removes many implementation details and struct members from its public headers. Use the gtk_check_menu_item_get_active() accessor. [1]: https://gitlab.gnome.org/GNOME/gtk/-/blob/2.24.33/docs/reference/gtk/compiling.sgml#L85 Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: remove unnecessary default message in text viewMasahiro Yamada1-1/+0
This message looks odd because it is displayed when nothing is selected. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: replace "tooltip" property with "tooltip-text"Masahiro Yamada1-17/+17
This is no longer available in GTK 3. Use "tooltip-text" instead. Also reword "Goes up of one level" to "Goes up one level" while I am here. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: remove "tooltips" property from gladeMasahiro Yamada1-1/+0
The tips are still displayed without this. This property does not exist in GtkBuilder with GTK 3. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: replace GTK_STOCK_{OK,NO,CANCEL}Masahiro Yamada1-3/+3
These are deprecated with GTK 3.10. [1] Use "_OK", "_no", "_Cancel". [1]: https://gitlab.gnome.org/GNOME/gtk/-/blob/3.10.0/gtk/deprecated/gtkstock.h#L827 Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: replace GDK_space with GDK_KEY_spaceMasahiro Yamada1-1/+1
In GTK3, keysyms changed to have a KEY_ prefix. [1]: https://gitlab.gnome.org/GNOME/gtk/-/blob/2.24.33/gdk/gdkkeysyms-compat.h#L24 Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: remove dead code in display_tree_part()Masahiro Yamada1-4/+1
This function is no longer called in the FULL_VIEW mode, so remove the dead code. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: inline display_list() into set_view_mode()Masahiro Yamada1-11/+3
This function is now only called by set_view_mode(), so inline it for simplicity. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: do not reconstruct tree store when a symbol is changedMasahiro Yamada1-18/+11
There is no need to reconstruct the entire tree store when a symbol's value changes. Simply call gtk_tree_store_set() to update the row data. Introduce update_trees() to factor out the common update logic. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: inline fill_row() into set_node()Masahiro Yamada1-166/+106
The row[] array is used to prepare data passed to set_node(), but this indirection is unnecessary. Squash fill_row() into set_node() and call gtk_tree_store_set() directly. Also, calling gdk_pixbuf_new_from_xpm_data() for every row is inefficient. Call it once and store the resulting pixbuf in a global variable. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: remove init_tree_model()Masahiro Yamada1-20/+16
Move the relevant code into init_left_tree() or init_right_tree(). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: remove global 'model1' and 'model2' variablesMasahiro Yamada1-5/+2
These variables are unnecessary because the current model can be retrieved using gtk_tree_view_get_model(). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org>
2025-07-02kconfig: gconf: use GtkTreeModelFilter to control row visibilityMasahiro Yamada1-137/+80
Currently, update_tree() adds/removes entries to show/hide rows. This approach is extremely complicated. Use the tree model filter to control row visibility instead. Do not toggle the MENU_CHANGED flag, as it is hard to control this correctly. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: preserve menu selection when switching view modeMasahiro Yamada1-8/+79
Preserve the current menu selection when switching to a different view mode, as it improves usability. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: merge 'current' and 'browsed' global variablesMasahiro Yamada1-19/+13
The 'current' (SINGLE view) and 'browsed' (SPLIT_VIEW) variables serve similar purposes and are not needed at the same time. Merge them. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: remove global 'tree' variableMasahiro Yamada1-21/+21
Pass the tree store as a function parameter to make it clearer which tree is being updated. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: make introduction, about, license dialogs modalMasahiro Yamada1-12/+6
These are modal dialogs in xconfig. Make them modal in gconfig as well. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org>
2025-07-02kconfig: gconf: refactor replace_button_icon()Masahiro Yamada1-15/+5
The "window" and "style" arguments for replace_button_icon() are now unused. Remove them and refactor the function accordingly. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: use GdkPixbuf in replace_button_icon()Masahiro Yamada1-7/+6
gdk_pixmap_create_from_xpm_d has been deprecated since version 2.22. Use a GdkPixbuf instead. You can use gdk_pixbuf_new_from_xpm_data() to create it. [1] [1]: https://gitlab.gnome.org/GNOME/gtk/-/blob/2.24.33/gdk/gdkpixmap.c#L742 Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: use GtkFileChooser in on_save_as1_activate()Masahiro Yamada1-27/+25
gtk_file_selection_new() is deprecated, and gtk_file_chooser_dialog_new() should be used instead. [1] [1]: https://gitlab.gnome.org/GNOME/gtk/-/blob/2.24.33/docs/reference/gtk/tmpl/gtkfilesel.sgml?ref_type=tags#L156 Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org>
2025-07-02kconfig: gconf: use GtkFileChooser in on_load1_activate()Masahiro Yamada1-27/+27
gtk_file_selection_new() is deprecated, and gtk_file_chooser_dialog_new() should be used instead. [1] [1]: https://gitlab.gnome.org/GNOME/gtk/-/blob/2.24.33/docs/reference/gtk/tmpl/gtkfilesel.sgml?ref_type=tags#L156 Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org>
2025-07-02kconfig: gconf: add on_save_clicked() event handlerMasahiro Yamada1-1/+6
The "clicked" event handler for GtkToolButton takes the GtkToolButton* as the first parameter. This is different from the existing on_save_activate() handler. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: avoid hardcoding model* in on_treeview*_button_press_event()Masahiro Yamada1-4/+6
It is better not to hardcode model1 or model2 for consistency. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: avoid hardcoding model2 in renderer_edited()Masahiro Yamada1-4/+6
Although this is only used in the right tree view, it is better not to hardcode model2 for consistency. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: avoid hardcoding model2 in on_treeview2_cursor_changed()Masahiro Yamada1-2/+3
The on_treeview2_cursor_changed() handler is connected to both the left and right tree views, but it hardcodes model2 (the GtkTreeModel of the right tree view). This is incorrect. Get the associated model from the view. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: make key_press_event work in left pane tooMasahiro Yamada1-4/+3
Currently, on_treeview2_key_press_event() returns early for the tree1 widget. We can make it work on the left pane as well by avoiding the hardcoded use of model2. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: remove glade_xml_signal_autoconnect() callMasahiro Yamada1-1/+0
Now that all signals are connected manually, this is no longer necessary. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: add static qualifiers to event handlersMasahiro Yamada2-83/+125
This fixes several -Wmissing-prototypes warnings. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org>
2025-07-02kconfig: gconf: move button1 and save1 initialization codeMasahiro Yamada1-4/+8
Move the relevant initialization code closer together. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: move the main window event handlers belowMasahiro Yamada1-85/+78
This allows removal of the forward delcaration of on_save_activate(). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-02kconfig: gconf: grey out button for current viewMasahiro Yamada1-2/+13
This clarifies which view is currently selected. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org>
2025-07-02kconfig: gconf: refactor view setting codeMasahiro Yamada1-36/+38
Factor out common code for setting the view into a new function, set_view_mode(). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org>
2025-07-01kconfig: gconf: move init_*() functions belowMasahiro Yamada1-228/+222
This allows removal of the forward declaration of renderer_edited(). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-01kconfig: gconf: add static qualifiers to variablesMasahiro Yamada1-14/+14
I also removed unnecessary initializers. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-01kconfig: gconf: remove unused 'color' variableMasahiro Yamada1-1/+0
This is not used at all. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-01kconfig: gconf: remove unneeded variables in on_treeview*_button_press_event()Masahiro Yamada1-11/+3
Not all position parameters are used here. Passing NULL to gtk_tree_view_get_cursor() or gtk_tree_view_get_path_at_pos() is allowed. [1] [2] [1]: https://gitlab.gnome.org/GNOME/gtk/-/blob/2.24.33/gtk/gtktreeview.c#L12638 [1]: https://gitlab.gnome.org/GNOME/gtk/-/blob/2.24.33/gtk/gtktreeview.c#L12795 Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-01kconfig: gconf: remove unneeded variable in on_split_clicked()Masahiro Yamada1-2/+2
The height of the window is not used here. Passing NULL to gtk_window_get_default_size() is allowed. [1] [1]: https://gitlab.gnome.org/GNOME/gtk/-/blob/2.24.33/gtk/gtkwindow.c#L3974 Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-01kconfig: gconf: remove unnecessary NULL checks for tree1 and tree2Masahiro Yamada1-8/+4
The tree1 and tree2 variables are initialized earlier in init_tree_model(), so the NULL checks are redundant. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-01kconfig: gconf: remove parents[] array and indent variableMasahiro Yamada1-35/+14
The parents[] array is used to store the GtkTreeIter of parent nodes, but this can be simplified: we can pass a GtkTreeIter pointer down when _display_tree() recurses. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-01kconfig: gconf: remove internal-child="image" nodes from gladeMasahiro Yamada1-84/+0
These nodes do not appear to serve anything useful. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-01kconfig: gconf: remove unnecessary gtk_set_locale() callMasahiro Yamada1-1/+0
gtk_set_locale() has been deprecated since version 2.24, and setlocale() should be used directly. [1] However, gtk_init() automatically does this, so there is typically no point in calling this function. [1]: https://gitlab.gnome.org/GNOME/gtk/-/blob/2.24.33/gtk/gtkmain.c#L1152 Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-01kconfig: gconf: remove gtk_tree_view_set_rules_hint() callsMasahiro Yamada1-2/+0
The use of the this function is not recommended, and it has been deprecated since GTK 3.14. [1]: https://gitlab.gnome.org/GNOME/gtk/-/blob/3.14.0/gtk/gtktreeview.c#L11891 Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-01kconfig: gconf: remove gtk_widget_realize() callsMasahiro Yamada1-2/+0
This function is primarily used in widget implementations, and isn't very useful otherwise. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-01kconfig: gconf: remove gtk_tree_view_column_set_visible() callsMasahiro Yamada1-11/+0
The columns are visible by default. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-01kconfig: gconf: remove unneeded gtk_tree_view_set_headers_visible() callsMasahiro Yamada1-2/+0
The headers are visible by default. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-01kconfig: gconf: remove meaningless code in init_main_window()Masahiro Yamada1-1/+0
The 'widget' variable is set, but not used in later code. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org>
2025-07-01kconfig: gconf: remove empty if-blockMasahiro Yamada1-2/+0
This if-block is empty. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org>
2025-07-01kconfig: gconf: remove old #ifdef GTK_CHECK_VERSIONMasahiro Yamada1-4/+0
Remove old code. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-07-01kconfig: gconf: always destroy dialog in on_window1_delete_event()Masahiro Yamada1-5/+8
When gtk_dialog_run() returns GTK_RESPONSE_YES or GTK_RESPONSE_NO, gtk_widget_destroy() is not called, resulting in a memory leak. It is better to always destroy the dialog, even if the application is about to exit. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org>
2025-06-30kconfig: gconf: fix potential memory leak in renderer_edited()Masahiro Yamada1-1/+2
If gtk_tree_model_get_iter() fails, gtk_tree_path_free() is not called. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org>
2025-06-30kconfig: gconf: make columns resizableMasahiro Yamada1-6/+3
The variable "resizeable" is a typo and always set to FALSE, resulting in dead code in init_right_tree(). It is unclear column resizing should be disabled. Enable it. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org>
2025-06-30kconfig: re-add menu_get_parent_menu() that returns parent menuMasahiro Yamada2-0/+15
This helper returns the parent menu, or NULL if there is no parent. The main difference from the previous version is that it always returns the parent menu even when the given argument is itself a menu. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org>
2025-06-30kconfig: rename menu_get_parent_menu() to menu_get_menu_or_parent_menu()Masahiro Yamada4-6/+12
The current menu_get_parent_menu() does not always return the parent menu; if the given argument is itself a menu, it returns that menu. Rename this function to better reflect this behavior. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org>
2025-06-30kconfig: qconf: show selected choice in the Value columnMasahiro Yamada1-1/+8
It is useful to display the selected choice's value in the Value column. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org>
2025-06-30kconfig: qconf: do not show checkbox icon for choiceMasahiro Yamada1-5/+6
When you select "Show All Options" or "Show Prompt Options", choice entries display a check box icon, but this has no point because choice is always y since commit fde192511bdb ("kconfig: remove tristate choice support"). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org>
2025-06-28kconfig: set MENU_CHANGED to choice when the selected member is changedMasahiro Yamada1-0/+4
In gconf, choice entries display the selected symbol in the 'Value' column, but it is not updated when the selected symbol is changed. Set the MENU_CHANGED flag, so it is updated. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-06-24kconfig: lxdialog: fix 'space' to (de)select optionsYann E. MORIN1-1/+1
In case a menu has comment without letters/numbers (eg. characters matching the regexp '^[^[:alpha:][:digit:]]+$', for example - or *), hitting space will cycle through those comments, rather than selecting/deselecting the currently-highlighted option. This is the behaviour of hitting any letter/digit: jump to the next option which prompt starts with that letter. The only letters that do not behave as such are 'y' 'm' and 'n'. Prompts that start with one of those three letters are instead matched on the first letter that is not 'y', 'm' or 'n'. Fix that by treating 'space' as we treat y/m/n, ie. as an action key, not as shortcut to jump to prompt. Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr> Signed-off-by: Peter Korsgaard <peter@korsgaard.com> Signed-off-by: Cherniaev Andrei <dungeonlords789@naver.com> [masahiro: took from Buildroot, adjusted the commit subject] Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-06-18kconfig: use memcmp instead of deprecated bcmpThomas Meyer1-1/+1
bcmp() was removed in POSIX.1-2008. This commit replaces bcmp() with memcmp(). This allows Kconfig to link with C libraries that do not provide bcmp(), such as Android bionic libc. Signed-off-by: Thomas Meyer <thomas@m3y3r.de> Reviewed-by: Miguel Ojeda <ojeda@kernel.org> Reported-by: Abhigyan Ghosh <zscript.team.zs@gmail.com> [masahiro: update commit description] Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-06-06kconfig: introduce menu type enumMasahiro Yamada4-9/+21
Currently, menu->prompt->type is checked to distinguish "comment" (P_COMMENT) and "menu" (P_MENU) entries from regular "config" entries. This is odd because P_COMMENT and P_MENU are not properties. This commit introduces menu type enum to distinguish menu types more naturally. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-04-06kconfig: merge_config: use an empty file as initfileDaniel Gomez1-2/+2
The scripts/kconfig/merge_config.sh script requires an existing $INITFILE (or the $1 argument) as a base file for merging Kconfig fragments. However, an empty $INITFILE can serve as an initial starting point, later referenced by the KCONFIG_ALLCONFIG Makefile variable if -m is not used. This variable can point to any configuration file containing preset config symbols (the merged output) as stated in Documentation/kbuild/kconfig.rst. When -m is used $INITFILE will contain just the merge output requiring the user to run make (i.e. KCONFIG_ALLCONFIG=<$INITFILE> make <allnoconfig/alldefconfig> or make olddefconfig). Instead of failing when `$INITFILE` is missing, create an empty file and use it as the starting point for merges. Signed-off-by: Daniel Gomez <da.gomez@samsung.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-03-15kconfig: remove unnecessary cast in sym_get_string()Masahiro Yamada1-1/+1
The explicit casting from (char *) to (const char *) is unneeded. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-03-15kconfig: do not clear SYMBOL_VALID when reading include/config/auto.confMasahiro Yamada1-7/+12
When conf_read_simple() is called with S_DEF_AUTO, it is meant to read previous symbol values from include/config/auto.conf to determine which include/config/* files should be touched. This process should not modify the current symbol status in any way. However, conf_touch_deps() currently invalidates all symbol values and recalculates them, which is totally unneeded. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-01-30kconfig: fix memory leak in sym_warn_unmet_dep()Masahiro Yamada1-0/+1
The string allocated in sym_warn_unmet_dep() is never freed, leading to a memory leak when an unmet dependency is detected. Fixes: f8f69dc0b4e0 ("kconfig: make unmet dependency warnings readable") Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Petr Vorel <pvorel@suse.cz>
2025-01-30kconfig: fix file name in warnings when loading KCONFIG_DEFCONFIG_LISTMasahiro Yamada1-2/+4
Most 'make *config' commands use .config as the base configuration file. When .config does not exist, Kconfig tries to load a file listed in KCONFIG_DEFCONFIG_LIST instead. However, since commit b75b0a819af9 ("kconfig: change defconfig_list option to environment variable"), warning messages have displayed an incorrect file name in such cases. Below is a demonstration using Debian Trixie. While loading /boot/config-6.12.9-amd64, the warning messages incorrectly show .config as the file name. With this commit, the correct file name is displayed in warnings. [Before] $ rm -f .config $ make config # # using defaults found in /boot/config-6.12.9-amd64 # .config:6804:warning: symbol value 'm' invalid for FB_BACKLIGHT .config:9895:warning: symbol value 'm' invalid for ANDROID_BINDER_IPC [After] $ rm -f .config $ make config # # using defaults found in /boot/config-6.12.9-amd64 # /boot/config-6.12.9-amd64:6804:warning: symbol value 'm' invalid for FB_BACKLIGHT /boot/config-6.12.9-amd64:9895:warning: symbol value 'm' invalid for ANDROID_BINDER_IPC Fixes: b75b0a819af9 ("kconfig: change defconfig_list option to environment variable") Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-01-10kconfig: qconf: use preferred form of QString APIRolf Eike Beer1-4/+4
A QString constructed from a character literal of length 0, i.e. "", is not "null" for historical reasons. This does not matter here so use the preferred method isEmpty() instead. Also directly construct empty QString objects instead of passing in an empty character literal that has to be parsed into an empty object first. Signed-off-by: Rolf Eike Beer <eb@emlix.com> Link: https://doc.qt.io/qt-6/qstring.html#distinction-between-null-and-empty-strings Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2025-01-10kbuild: suppress stdout from merge_config for silent buildsMasahiro Yamada1-1/+3
merge_config does not respect the Make's -s (--silent) option. Let's sink the stdout from merge_config for silent builds. This commit does not cater to the direct invocation of merge_config.sh (e.g. arch/mips/Makefile). Reported-by: Leon Romanovsky <leon@kernel.org> Closes: https://lore.kernel.org/all/e534ce33b0e1060eb85ece8429810f087b034c88.1733234008.git.leonro@nvidia.com/ Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Leon Romanovsky <leon@kernel.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org>
2024-11-06kconfig: document the positional argument in the help messageMasahiro Yamada1-1/+4
The positional argument specifies the top-level Kconfig. Include this information in the help message. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-06kconfig: qconf: remove unnecessary mode check in ConfigItem::updateMenu()Masahiro Yamada1-1/+1
The P_MENU entries ("menu" and "menuconfig") are never displayed in symbolMode. The condition, list->mode == symbolMode, is never met here. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-06kconfig: qconf: refactor ConfigInfoView::clicked()Masahiro Yamada1-37/+6
Most of the code in ConfigInfoView::clicked() is unnecessary. There is no need to use the regular expression to search for a symbol. Calling sym_find() is simpler and faster. The hyperlink always begins with the "s" tag, and there is no other tag used. Remove it. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-06kconfig: add sym_get_prompt_menu() helper functionMasahiro Yamada2-7/+20
Split out the code that retrieves the menu entry with a prompt, so it can be reused in other functions. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-06kconfig: qconf: remove non-functional href="m..." tagMasahiro Yamada1-2/+2
The only functional tag is href="s<symbol_name>". Commit c4f7398bee9c ("kconfig: qconf: make debug links work again") changed prop->name to sym->name for this reference, but it missed to change the tag "m" to "s". This tag is not functional at all. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-06kconfig: qconf: remove redundant check in goBack()Masahiro Yamada1-3/+0
The same check is performed in the configList->setParentMenu() call. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-06kconfig: qconf: avoid unnecessary parentSelected() when ESC is pressedMasahiro Yamada1-1/+1
When the ESC key is pressed, the parentSelected() signal is currently emitted for singleMode, menuMode, and symbolMode. However, parentSelected() signal is functional only for singleMode. In menuMode, the signal is connected to the goBack() slot, but nothing occurs because configList->rootEntry is always &rootmenu. In symbolMode (in the right pane), the parentSelected() signal is not connected to any slot. This commit prevents the unnecessary emission of the parentSelected() signal. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-06kconfig: qconf: remove ConfigItem::visible memberMasahiro Yamada2-25/+18
The " (NEW)" string should be displayed regardless of the visibility of the associated menu. The ConfigItem::visible member is not used for any other purpose. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-06kconfig: qconf: do not show goParent button in split viewMasahiro Yamada1-2/+1
When a menu is selected in the split view, the right pane displays the goParent button, but it is never functional. This is unnecessary, as you can select a menu from the menu tree in the left pane. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-06kconfig: qconf: convert the last old connection syntax to Qt5 styleMasahiro Yamada1-1/+3
Commit a2574c12df0d ("kconfig: qconf: convert to Qt5 new signal/slot connection syntax") converted most of the old string-based connections, but one more instance still remains. Convert it to the new style. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-06kconfig: qconf: remove unnecessary lastWindowClosed() signal connectionMasahiro Yamada1-1/+0
The default value of the quitOnLastWindowClosed property is true. Hence, the application implicitly quits when the last window is closed. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-06kconfig: qconf: remove unnecessary setRootIsDecorated() callMasahiro Yamada1-1/+0
The default value of the rootIsDecorated property is true. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-06kconfig: qconf: remove redundant type check for choice membersMasahiro Yamada1-1/+1
Since commit fde192511bdb ("kconfig: remove tristate choice support"), choice members are always boolean. The type check is redundant. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-06kconfig: qconf: remove mouse{Press,Move}Event() functionsMasahiro Yamada2-16/+0
These functions simply passes the event to the parent. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-06kconfig: qconf: simplify character replacementRolf Eike Beer1-21/+12
Replace the hand crafted lookup table with a QHash. This has the nice benefit that the added offsets can not get out of sync with the length of the replacement strings. Signed-off-by: Rolf Eike Beer <eb@emlix.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-06kconfig: qconf: use default platform shortcutsRolf Eike Beer1-5/+7
This renames "Load" to "Open" and switches Ctrl-L to Ctrl-O for the default platforms. This may break the workflow for those used to it, but will make it actually work for everyone else like me who would just expect the default behavior. Add some more standard shortcuts where available. If they replace the existing shortcuts they would have the same value in my case. Signed-off-by: Rolf Eike Beer <eb@emlix.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-06kconfig: qconf: use QString to store path to configuration fileRolf Eike Beer2-19/+7
This is the native type used by the file dialogs and avoids any hassle with filename encoding when converting this back and forth to a character array. Signed-off-by: Rolf Eike Beer <eb@emlix.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-06kconfig: nconf: Fix typo in function commentThorsten Blum1-1/+1
s/handles/handled/ Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-06streamline_config.pl: remove prompt warnings for configs with defaultsDavid Hunter1-2/+12
Ignore process select warnings for config entries that have a default option. Some config entries have no prompt, and nothing selects them, but these config options are okay because they have a default option. Signed-off-by: David Hunter <david.hunter.linux@gmail.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-06streamline_config.pl: ensure all defaults are trackedDavid Hunter1-1/+1
Track default options on the second line. On the second line of some config entries, default and dependency options sometimes appear. In those instances, the state will be "NEW" and not "DEP". Signed-off-by: David Hunter <david.hunter.linux@gmail.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-04streamline_config.pl: fix missing variable operator in debug printDavid Hunter1-1/+1
Put in the dollar sign for the variable '$config'. That way, the debug message has more meaning. Signed-off-by: David Hunter <david.hunter.linux@gmail.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-04kconfig: nconf: Use TAB to cycle thru dialog buttonsThorsten Blum1-0/+9
Add the ability to cycle through dialog buttons with the TAB key. Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-04kconfig: qconf: set parent in the widget constructorMasahiro Yamada1-8/+4
The ->addWidget() method re-parents the widget. The parent QWidget can be specified directly in the constructor. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-04kconfig: qconf: reorder code in ConfigMainWindow() constructorMasahiro Yamada1-12/+11
Rearrange the code to make the upcoming refactoring easier to understand. No functional changes intended. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-04kconfig: qconf: set QSplitter orientation in the constructorMasahiro Yamada1-6/+3
The orientation of the QSplitter can be specified directly in its constructor. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-04kconfig: remove zconfprint()Masahiro Yamada1-17/+5
Turn all warnings during parsing into hard errors. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-11-04kconfig: remove support for "bool" prompt for choice entriesMasahiro Yamada1-6/+0
Since commit fde192511bdb ("kconfig: remove tristate choice support"), all choice blocks are now boolean. There is no longer a need to specify the choice type explicitly. All "bool" prompts in choice entries have been converted to "prompt". This commit removes support for the "bool" syntax in choice entries. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-10-31kconfig: show sub-menu entries even if the prompt is hiddenMasahiro Yamada1-1/+12
Since commit f79dc03fe68c ("kconfig: refactor choice value calculation"), when EXPERT is disabled, nothing within the "if INPUT" ... "endif" block in drivers/input/Kconfig is displayed. This issue affects all command-line interfaces and GUI frontends. The prompt for INPUT is hidden when EXPERT is disabled. Previously, menu_is_visible() returned true in this case; however, it now returns false, resulting in all sub-menu entries being skipped. Here is a simplified test case illustrating the issue: config A bool "A" if X default y config B bool "B" depends on A When X is disabled, A becomes unconfigurable and is forced to y. B should be displayed, as its dependency is met. This commit restores the necessary code, so menu_is_visible() functions as it did previously. Fixes: f79dc03fe68c ("kconfig: refactor choice value calculation") Reported-by: Edmund Raile <edmund.raile@proton.me> Closes: https://lore.kernel.org/all/5fd0dfc7ff171aa74352e638c276069a5f2e888d.camel@proton.me/ Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-10-02kconfig: qconf: fix buffer overflow in debug linksMasahiro Yamada1-1/+1
If you enable "Option -> Show Debug Info" and click a link, the program terminates with the following error: *** buffer overflow detected ***: terminated The buffer overflow is caused by the following line: strcat(data, "$"); The buffer needs one more byte to accommodate the additional character. Fixes: c4f7398bee9c ("kconfig: qconf: make debug links work again") Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-10-01kconfig: qconf: move conf_read() before drawing tree painMasahiro Yamada1-2/+2
The constructor of ConfigMainWindow() calls show*View(), which needs to calculate symbol values. conf_read() must be called before that. Fixes: 060e05c3b422 ("kconfig: qconf: remove initial call to conf_changed()") Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-10-01kconfig: clear expr::val_is_valid when allocatedMasahiro Yamada1-0/+1
Since commit 95573cac25c6 ("kconfig: cache expression values"), xconfig emits a lot of false-positive "unmet direct dependencies" warnings. While conf_read() clears val_is_valid flags, 'make xconfig' calculates symbol values even before the conf_read() call. This is another issue that should be addressed separately, but it has revealed that the val_is_valid field is not initialized. Fixes: 95573cac25c6 ("kconfig: cache expression values") Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-09-30kconfig: fix infinite loop in sym_calc_choice()Masahiro Yamada1-2/+8
Since commit f79dc03fe68c ("kconfig: refactor choice value calculation"), Kconfig for ARCH=powerpc may result in an infinite loop. This occurs because there are two entries for POWERPC64_CPU in a choice block. If the same symbol appears twice in a choice block, the ->choice_link node is added twice to ->choice_members, resulting a corrupted linked list. A simple test case is: choice prompt "choice" config A bool "A" config B bool "B 1" config B bool "B 2" endchoice Running 'make defconfig' results in an infinite loop. One solution is to replace the current two entries: config POWERPC64_CPU bool "Generic (POWER5 and PowerPC 970 and above)" depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN select PPC_64S_HASH_MMU config POWERPC64_CPU bool "Generic (POWER8 and above)" depends on PPC_BOOK3S_64 && CPU_LITTLE_ENDIAN select ARCH_HAS_FAST_MULTIPLIER select PPC_64S_HASH_MMU select PPC_HAS_LBARX_LHARX with the following single entry: config POWERPC64_CPU bool "Generic 64 bit powerpc" depends on PPC_BOOK3S_64 select ARCH_HAS_FAST_MULTIPLIER if CPU_LITTLE_ENDIAN select PPC_64S_HASH_MMU select PPC_HAS_LBARX_LHARX if CPU_LITTLE_ENDIAN In my opinion, the latter looks cleaner, but PowerPC maintainers may prefer to display different prompts depending on CPU_LITTLE_ENDIAN. For now, this commit fixes the issue in Kconfig, restoring the original behavior. I will reconsider whether such a use case is worth supporting. Fixes: f79dc03fe68c ("kconfig: refactor choice value calculation") Reported-by: Marco Bonelli <marco@mebeim.net> Closes: https://lore.kernel.org/all/1763151587.3581913.1727224126288@privateemail.com/ Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-09-20kconfig: cache expression valuesMasahiro Yamada5-4/+39
Cache expression values to avoid recalculating them repeatedly. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-09-20kconfig: use hash table to reuse expressionsMasahiro Yamada4-277/+157
Currently, every expression in Kconfig files produces a new abstract syntax tree (AST), even if it is identical to a previously encountered one. Consider the following code: config FOO bool "FOO" depends on (A || B) && C config BAR bool "BAR" depends on (A || B) && C config BAZ bool "BAZ" depends on A || B The "depends on" lines are similar, but currently a separate AST is allocated for each one. The current data structure looks like this: FOO->dep ==> AND BAR->dep ==> AND BAZ->dep ==> OR / \ / \ / \ OR C OR C A B / \ / \ A B A B This is redundant; FOO->dep and BAR->dep have identical ASTs but different memory instances. We can optimize this; FOO->dep and BAR->dep can share the same AST, and BAZ->dep can reference its sub tree. The optimized data structure looks like this: FOO->dep, BAR->dep ==> AND / \ BAZ->dep ==> OR C / \ A B This commit introduces a hash table to keep track of allocated expressions. If an identical expression is found, it is reused. This does not necessarily result in memory savings, as menu_finalize() transforms expressions without freeing up stale ones. This will be addressed later. One optimization that can be easily implemented is caching the expression's value. Once FOO's dependency, (A || B) && C, is calculated, it can be cached, eliminating the need to recalculate it for BAR. This commit also reverts commit e983b7b17ad1 ("kconfig/menu.c: fix multiple references to expressions in menu_add_prop()"). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-09-20kconfig: refactor expr_eliminate_dups()Masahiro Yamada1-11/+3
Currently, expr_eliminate_dups() passes two identical pointers down to expr_eliminate_dups1(), which later skips processing identical leaves. This approach is somewhat tricky and, more importantly, it will not work with the refactoring made in the next commit. This commit slightly changes the recursion logic; it deduplicates both the left and right arms, and then passes them to expr_eliminate_dups1(). expr_eliminate_dups() should produce the same result. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-09-20kconfig: add comments to expression transformationsMasahiro Yamada1-6/+37
Provide explanations for complex transformations. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-09-20kconfig: change some expr_*() functions to boolMasahiro Yamada2-10/+11
This clarifies the behavior of these functions. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-09-20scripts: move hash function from scripts/kconfig/ to scripts/include/Masahiro Yamada3-14/+5
This function was originally added by commit 8af27e1dc4e4 ("fixdep: use hash table instead of a single array"). Move it to scripts/include/ so that other host programs can use it. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-09-01kbuild: split x*alloc() functions in kconfig to scripts/include/xalloc.hMasahiro Yamada13-54/+12
These functions will be useful for other host programs. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-09-01kconfig: remove P_SYMBOL propertyMasahiro Yamada4-8/+0
P_SYMBOL is a pseudo property that was previously used for data linking purposes. It is no longer used except for debug prints. Remove it. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-09-01kconfig: stop adding P_SYMBOL property to symbolsMasahiro Yamada1-3/+1
I believe its last usage was in the following code: if (prop == NULL) prop = stack->sym->prop; This code was previously used to print the file name and line number of associated symbols in sym_check_print_recursive(), which was removed by commit 9d0d26604657 ("kconfig: recursive checks drop file/lineno"). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-09-01kconfig: remove dummy assignments to cur_{filename,lineno}Masahiro Yamada1-8/+0
Since commit ca4c74ba306e ("kconfig: remove P_CHOICE property"), menu_finalize() no longer calls menu_add_symbol(). No function references cur_filename or cur_lineno after yyparse(). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-08-06scripts: kconfig: merge_config: config files: add a trailing newlineAnders Roxell1-0/+2
When merging files without trailing newlines at the end of the file, two config fragments end up at the same row if file1.config doens't have a trailing newline at the end of the file. file1.config "CONFIG_1=y" file2.config "CONFIG_2=y" ./scripts/kconfig/merge_config.sh -m .config file1.config file2.config This will generate a .config looking like this. cat .config ... CONFIG_1=yCONFIG_2=y" Making sure so we add a newline at the end of every config file that is passed into the script. Signed-off-by: Anders Roxell <anders.roxell@linaro.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-21kbuild: move some helper headers from scripts/kconfig/ to scripts/include/Masahiro Yamada13-395/+11
Move array_size.h, hashtable.h, list.h, list_types.h from scripts/kconfig/ to scripts/include/. These headers will be useful for other host programs. Remove scripts/mod/list.h. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-20kconfig: recursive checks drop file/linenoHONG Yifan2-48/+30
This prevents segfault when getting filename and lineno in recursive checks. If the following snippet is found in Kconfig: [Test code 1] config FOO bool depends on BAR select BAR ... without BAR defined; then there is a segfault. Kconfig:34:error: recursive dependency detected! Kconfig:34: symbol FOO depends on BAR make[4]: *** [scripts/kconfig/Makefile:85: allnoconfig] Segmentation fault This is because of the following. BAR is a fake entry created by sym_lookup() with prop being NULL. In the recursive check, there is a NULL check for prop to fall back to stack->sym->prop if stack->prop is NULL. However, in this case, stack->sym points to the fake BAR entry created by sym_lookup(), so prop is still NULL. prop was then referenced without additional NULL checks, causing segfault. As the previous email thread suggests, the file and lineno for select is also wrong: [Test code 2] config FOO bool config BAR bool config FOO bool "FOO" depends on BAR select BAR $ make defconfig *** Default configuration is based on 'x86_64_defconfig' Kconfig:1:error: recursive dependency detected! Kconfig:1: symbol FOO depends on BAR Kconfig:4: symbol BAR is selected by FOO [...] Kconfig:4 should be Kconfig:10. This patch deletes the wrong and segfault-prone filename/lineno inference completely. With this patch, Test code 1 yields: error: recursive dependency detected! symbol FOO depends on BAR symbol BAR is selected by FOO Signed-off-by: HONG Yifan <elsk@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-20kconfig: remove 'e1' and 'e2' macros from expression deduplicationMasahiro Yamada1-52/+42
I do not think the macros 'e1' and 'e2' are readable. The statement: e1 = expr_alloc_symbol(...); affects the caller's variable, but this is not sufficiently clear from the code. Remove the macros. No functional change intended. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: remove SYMBOL_CHOICEVAL flagMasahiro Yamada5-11/+8
This flag is unneeded because a choice member can be detected by other means. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: add const qualifiers to several function argumentsMasahiro Yamada8-36/+40
Clarify that the given structures are not modified. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: call expr_eliminate_yn() at least once in expr_eliminate_dups()Masahiro Yamada1-5/+2
Kconfig simplifies expressions, but redundant '&&' and '||' operators involving constant symbols 'y' and 'n' are sometimes trimmed and sometimes not. [Test Code] config DEP def_bool y config A bool "A" depends on DEP && y config B bool "B" depends on DEP && y && y [Result] $ make helpnewconfig [ snip ] ----- There is no help available for this option. Symbol: A [=n] Type : bool Defined at Kconfig:4 Prompt: A Depends on: DEP [=y] && y [=y] Location: -> A (A [=n]) ----- ----- There is no help available for this option. Symbol: B [=n] Type : bool Defined at Kconfig:8 Prompt: B Depends on: DEP [=y] Location: -> B (B [=n]) ----- The dependency for A, 'DEP && y', remains as-is, while that for B, 'DEP && y && y', has been reduced to 'DEP'. Currently, expr_eliminate_dups() calls expr_eliminate_yn() only when trans_count != 0, in other words, only when expr_eliminate_dups1() has trimmed at least one leaf. It fails to trim a single '&& y', etc. To fix this inconsistent behavior, expr_eliminate_yn() should be called at least once even if no leaf has been trimmed. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: refactor error messages in sym_check_print_recursive()Masahiro Yamada1-9/+9
Improve the error messages and clean up redundant code. [1] remove redundant next_sym->name checks If 'next_sym' is a choice, the first 'if' block is executed. In the subsequent 'else if' blocks, 'next_sym" is not a choice, hence next_sym->name is not NULL. [2] remove redundant sym->name checks A choice is never selected or implied by anyone because it has no name (it is syntactically impossible). If it is, sym->name is not NULL. [3] Show the location of choice instead of "<choice>" "part of choice <choice>" does not convey useful information. Since a choice has no name, it is more informative to display the file name and line number. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: improve error message for recursive dependency in choiceMasahiro Yamada1-6/+1
Kconfig detects recursive dependencies in a choice block, but the error message is unclear. [Test Code] choice prompt "choose" depends on A config A bool "A" config B bool "B" endchoice [Result] Kconfig:1:error: recursive dependency detected! Kconfig:1: choice <choice> contains symbol A Kconfig:5: symbol A is part of choice <choice> For a resolution refer to Documentation/kbuild/kconfig-language.rst subsection "Kconfig recursive dependency limitations" The phrase "contains symbol A" does not accurately describe the problem. The issue is that the choice depends on A, which is a member of itself. The first if-block does not print a sensible message. Remove it. This commit improves the error message to: Kconfig:1:error: recursive dependency detected! Kconfig:1: symbol <choice> symbol is visible depending on A Kconfig:5: symbol A is part of choice <choice> For a resolution refer to Documentation/kbuild/kconfig-language.rst subsection "Kconfig recursive dependency limitations" Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: improve error message for dependency between choice membersMasahiro Yamada1-1/+1
A choice member must not depend on another member within the same choice block. Kconfig detects this, but the error message is not sensible. [Test Code] choice prompt "choose" config A bool "A" depends on B config B bool "B" endchoice [Result] Kconfig:1:error: recursive dependency detected! Kconfig:1: choice <choice> contains symbol A Kconfig:4: symbol A is part of choice B Kconfig:8: symbol B is part of choice <choice> For a resolution refer to Documentation/kbuild/kconfig-language.rst subsection "Kconfig recursive dependency limitations" The phrase "part of choice B" is weird because B is not a choice block, but a choice member. To determine whether the current symbol is a part of a choice block, sym_is_choice(next_sym) must be checked. This commit improves the error message to: Kconfig:1:error: recursive dependency detected! Kconfig:1: choice <choice> contains symbol A Kconfig:4: symbol A symbol is visible depending on B Kconfig:8: symbol B is part of choice <choice> For a resolution refer to Documentation/kbuild/kconfig-language.rst subsection "Kconfig recursive dependency limitations" Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: fix conditional prompt behavior for choiceMasahiro Yamada2-36/+4
When a prompt is followed by "if <expr>", the symbol is configurable when the if-conditional evaluates to true. A typical usage is as follows: menuconfig BLOCK bool "Enable the block layer" if EXPERT default y When EXPERT=n, the prompt is hidden, but this config entry is still active, and BLOCK is set to its default value 'y'. When EXPERT=y, the prompt is shown, making BLOCK a user-configurable option. This usage is common throughout the kernel tree, but it has never worked within a choice block. [Test Code] config EXPERT bool "Allow expert users to modify more options" choice prompt "Choose" if EXPERT config A bool "A" config B bool "B" endchoice [Result] # CONFIG_EXPERT is not set When the prompt is hidden, the choice block should produce the default without asking for the user's preference. Hence, the output should be: # CONFIG_EXPERT is not set CONFIG_A=y # CONFIG_B is not set Removing unnecessary hacks fixes the issue. This commit also changes the behavior of 'select' by choice members. [Test Code 2] config MODULES def_bool y modules config DEP def_tristate m if DEP choice prompt "choose" config A bool "A" select C endchoice config B def_bool y select D endif config C tristate config D tristate The current output is as follows: CONFIG_MODULES=y CONFIG_DEP=m CONFIG_A=y CONFIG_B=y CONFIG_C=y CONFIG_D=m With this commit, the output will be changed as follows: CONFIG_MODULES=y CONFIG_DEP=m CONFIG_A=y CONFIG_B=y CONFIG_C=m CONFIG_D=m CONFIG_C will be changed to 'm' because 'select C' will inherit the dependency on DEP, which is 'm'. This change is aligned with the behavior of 'select' outside a choice block; 'select D' depends on DEP, therefore D is selected by (B && DEP). Note: With this commit, allmodconfig will set CONFIG_USB_ROLE_SWITCH to 'm' instead of 'y'. I did not see any build regression with this change. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: remove E_LIST expression typeMasahiro Yamada3-18/+2
E_LIST was preveously used to form an expression tree consisting of choice members. It is no longer used. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: remove P_CHOICE propertyMasahiro Yamada6-37/+3
P_CHOICE is a pseudo property used to link a choice with its members. There is no more code relying on this, except for some debug code. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: use sym_get_choice_menu() in sym_check_deps()Masahiro Yamada1-4/+4
Choices and their members are associated via the P_CHOICE property. Currently, prop_get_symbol(sym_get_choice_prop()) is used to obtain the choice of the given choice member. Replace it with sym_get_choice_menu(), which retrieves the choice without relying on P_CHOICE. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: use sym_get_choice_menu() in sym_check_choice_deps()Masahiro Yamada1-3/+7
Choices and their members are associated via the P_CHOICE property. Currently, prop_get_symbol(sym_get_choice_prop()) is used to obtain the choice of the given choice member. Replace it with sym_get_choice_menu(), which retrieves the choice without relying on P_CHOICE. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: use sym_get_choice_menu() in sym_check_print_recursive()Masahiro Yamada1-2/+4
Choices and their members are associated via the P_CHOICE property. Currently, prop_get_symbol(sym_get_choice_prop()) is used to obtain the choice of the given choice member. Replace it with sym_get_choice_menu(), which retrieves the choice without relying on P_CHOICE. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: remove expr_list_for_each_sym() macroMasahiro Yamada1-3/+0
All users of this macro have been converted. Remove it. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: use menu_list_for_each_sym() in sym_choice_default()Masahiro Yamada1-5/+4
Choices and their members are associated via the P_CHOICE property. Currently, sym_get_choice_prop() and expr_list_for_each_sym() are used to iterate on choice members. Replace them with menu_for_each_sub_entry(), which achieves the same without relying on P_CHOICE. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: change sym_choice_default() to take the choice menuMasahiro Yamada3-6/+6
Change the argument of sym_choice_default() to ease further cleanups. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: remove conf_unsaved in conf_read_simple()Masahiro Yamada1-3/+2
This variable is unnecessary. Call conf_set_changed(true) directly. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: remove sym_get_choice_value()Masahiro Yamada6-21/+11
sym_get_choice_value(menu->sym) is equivalent to sym_calc_choice(menu). Convert all call sites of sym_get_choice_value() and then remove it. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: refactor choice value calculationMasahiro Yamada7-197/+187
Handling choices has always been in a PITA in Kconfig. For example, fixes and reverts were repeated for randconfig with KCONFIG_ALLCONFIG: - 422c809f03f0 ("kconfig: fix randomising choice entries in presence of KCONFIG_ALLCONFIG") - 23a5dfdad22a ("Revert "kconfig: fix randomising choice entries in presence of KCONFIG_ALLCONFIG"") - 8357b48549e1 ("kconfig: fix randomising choice entries in presence of KCONFIG_ALLCONFIG") - 490f16171119 ("Revert "kconfig: fix randomising choice entries in presence of KCONFIG_ALLCONFIG"") As these commits pointed out, randconfig does not randomize choices when KCONFIG_ALLCONFIG is used. This issue still remains. [Test Case] choice prompt "choose" config A bool "A" config B bool "B" endchoice $ echo > all.config $ make KCONFIG_ALLCONFIG=1 randconfig The output is always as follows: CONFIG_A=y # CONFIG_B is not set Not only randconfig, but other all*config variants are also broken with KCONFIG_ALLCONFIG. With the same Kconfig, $ echo '# CONFIG_A is not set' > all.config $ make KCONFIG_ALLCONFIG=1 allyesconfig You will get this: CONFIG_A=y # CONFIG_B is not set This is incorrect because it does not respect all.config. The correct output should be: # CONFIG_A is not set CONFIG_B=y To handle user inputs more accurately, this commit refactors the code based on the following principles: - When a user value is given, Kconfig must set it immediately. Do not defer it by setting SYMBOL_NEED_SET_CHOICE_VALUES. - The SYMBOL_DEF_USER flag must not be cleared, unless a new config file is loaded. Kconfig must not forget user inputs. In addition, user values for choices must be managed with priority. If user inputs conflict within a choice block, the newest value wins. The values given by randconfig have lower priority than explicit user inputs. This commit implements it by using a linked list. Every time a choice block gets a new input, it is moved to the top of the list. Let me explain how it works. Let's say, we have a choice block that consists of five symbols: A, B, C, D, and E. Initially, the linked list looks like this: A(=?) --> B(=?) --> C(=?) --> D(=?) --> E(=?) Suppose randconfig is executed with the following KCONFIG_ALLCONFIG: CONFIG_C=y # CONFIG_A is not set CONFIG_D=y First, CONFIG_C=y is read. C is set to 'y' and moved to the top. C(=y) --> A(=?) --> B(=?) --> D(=?) --> E(=?) Next, '# CONFIG_A is not set' is read. A is set to 'n' and moved to the top. A(=n) --> C(=y) --> B(=?) --> D(=?) --> E(=?) Then, 'CONFIG_D=y' is read. D is set to 'y' and moved to the top. D(=y) --> A(=n) --> C(=y) --> B(=?) --> E(=?) Lastly, randconfig shuffles the order of the remaining symbols, resulting in: D(=y) --> A(=n) --> C(=y) --> B(=y) --> E(=y) or D(=y) --> A(=n) --> C(=y) --> E(=y) --> B(=y) When calculating the output, the linked list is traversed and the first visible symbol with 'y' is taken. In this case, it is D if visible. If D is hidden by 'depends on', the next node, A, is examined. Since it is already specified as 'n', it is skipped. Next, C is checked, and selected if it is visible. If C is also invisible, either B or E is chosen as a result of the randomization. If B and E are also invisible, the linked list is traversed in the reverse order, and the least prioritized 'n' symbol is chosen. It is A in this case. Now, Kconfig remembers all user values. This is a big difference from the previous implementation, where Kconfig would forget CONFIG_C=y when CONFIG_D=y appeared in the same input file. The new appaorch respects user-specified values as much as possible. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: import list_move(_tail) and list_for_each_entry_reverse macrosMasahiro Yamada1-0/+53
Import more macros from include/linux/list.h. These will be used in the next commit. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: remember the current choice while parsing the choice blockMasahiro Yamada1-6/+4
Instead of the boolean flag, it will be more useful to remember the current choice being parsed. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: introduce choice_set_value() helperMasahiro Yamada5-22/+47
Currently, sym_set_tristate_value() is used to set 'y' to a choice member, which is confusing because it not only sets 'y' to the given symbol but also tweaks flags of other symbols as a side effect. Add a dedicated function for setting the value of the given choice. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: add fallthrough comments to expr_compare_type()Masahiro Yamada1-0/+5
Clarify the missing 'break' is intentional. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: remove unneeded code in expr_compare_type()Masahiro Yamada1-4/+1
The condition (t2 == 0) never becomes true because the zero value (i.e., E_NONE) is only used as a dummy type for prevtoken. It can be passed to t1, but not to t2. The caller of this function only checks expr_compare_type() > 0. Therefore, the distinction between 0 and -1 is unnecessary. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: add -e and -u options to *conf-cfg.sh scriptsMasahiro Yamada4-0/+8
Set -e to make these scripts fail on the first error. Set -u because these scripts are invoked by Makefile, and do not work properly without necessary variables defined. Both options are described in POSIX. [1] [1]: https://pubs.opengroup.org/onlinepubs/009604499/utilities/set.html Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
2024-07-16kconfig: refactor conf_write_defconfig() to reduce indentation levelMasahiro Yamada1-25/+22
Reduce the indentation level by continue'ing the loop earlier if (!sym || sym_is_choice(sym)). No functional change intended. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
2024-07-16kconfig: refactor conf_set_all_new_symbols() to reduce indentation levelMasahiro Yamada1-31/+30
The outer switch statement can be avoided by continue'ing earlier the loop when the symbol type is neither S_BOOLEAN nor S_TRISTATE. Remove it to reduce the indentation level by one. In addition, avoid the repetition of sym->def[S_DEF_USER].tri. No functional change intended. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
2024-07-16kconfig: remove tristate choice supportMasahiro Yamada27-315/+42
I previously submitted a fix for a bug in the choice feature [1], where I mentioned, "Another (much cleaner) approach would be to remove the tristate choice support entirely". There are more issues in the tristate choice feature. For example, you can observe a couple of bugs in the following test code. [Test Code] config MODULES def_bool y modules choice prompt "tristate choice" default A config A tristate "A" config B tristate "B" endchoice Bug 1: the 'default' property is not correctly processed 'make alldefconfig' produces: CONFIG_MODULES=y # CONFIG_A is not set # CONFIG_B is not set However, the correct output should be: CONFIG_MODULES=y CONFIG_A=y # CONFIG_B is not set The unit test file, scripts/kconfig/tests/choice/alldef_expected_config, is wrong as well. Bug 2: choice members never get 'y' with randconfig For the test code above, the following combinations are possible: A B (1) y n (2) n y (3) m m (4) m n (5) n m (6) n n 'make randconfig' never produces (1) or (2). These bugs are fixable, but a more critical problem is the lack of a sensible syntax to specify the default for the tristate choice. The default for the choice must be one of the choice members, which cannot specify any of the patterns (3) through (6) above. In addition, I have never seen it being used in a useful way. The following commits removed unnecessary use of tristate choices: - df8df5e4bc37 ("usb: get rid of 'choice' for legacy gadget drivers") - bfb57ef0544a ("rapidio: remove choice for enumeration") This commit removes the tristate choice support entirely, which allows me to delete a lot of code, making further refactoring easier. Note: This includes the revert of commit fa64e5f6a35e ("kconfig/symbol.c: handle choice_values that depend on 'm' symbols"). It was suspicious because it did not address the root cause but introduced inconsistency in visibility between choice members and other symbols. [1]: https://lore.kernel.org/linux-kbuild/20240427104231.2728905-1-masahiroy@kernel.org/T/#m0a1bb6992581462ceca861b409bb33cb8fd7dbae Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
2024-07-16kconfig: pass new conf_changed value to the callbackMasahiro Yamada5-14/+11
Commit ee06a3ef7e3c ("kconfig: Update config changed flag before calling callback") pointed out that conf_updated flag must be updated _before_ calling the callback, which needs to know the new value. Given that, it makes sense to directly pass the new value to the callback. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: gconf: move conf_changed() definition upMasahiro Yamada1-8/+7
Define conf_changed() before its call site to remove the forward declaration. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: gconf: remove unnecessary forward declarationsMasahiro Yamada1-2/+0
These are defined before their call sites. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-07-16kconfig: qconf: remove initial call to conf_changed()Masahiro Yamada1-3/+3
If any CONFIG option is changed while loading the .config file, conf_read() calls conf_set_changed(true) and then the conf_changed() callback. With conf_read() moved after window initialization, the explicit conf_changed() call can be removed. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-06-06kconfig: remove wrong expr_trans_bool()Masahiro Yamada3-32/+0
expr_trans_bool() performs an incorrect transformation. [Test Code] config MODULES def_bool y modules config A def_bool y select C if B != n config B def_tristate m config C tristate [Result] CONFIG_MODULES=y CONFIG_A=y CONFIG_B=m CONFIG_C=m This output is incorrect because CONFIG_C=y is expected. Documentation/kbuild/kconfig-language.rst clearly explains the function of the '!=' operator: If the values of both symbols are equal, it returns 'n', otherwise 'y'. Therefore, the statement: select C if B != n should be equivalent to: select C if y Or, more simply: select C Hence, the symbol C should be selected by the value of A, which is 'y'. However, expr_trans_bool() wrongly transforms it to: select C if B Therefore, the symbol C is selected by (A && B), which is 'm'. The comment block of expr_trans_bool() correctly explains its intention: * bool FOO!=n => FOO ^^^^ If FOO is bool, FOO!=n can be simplified into FOO. This is correct. However, the actual code performs this transformation when FOO is tristate: if (e->left.sym->type == S_TRISTATE) { ^^^^^^^^^^ While it can be fixed to S_BOOLEAN, there is no point in doing so because expr_tranform() already transforms FOO!=n to FOO when FOO is bool. (see the "case E_UNEQUAL" part) expr_trans_bool() is wrong and unnecessary. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org>
2024-06-06kconfig: gconf: give a proper initial state to the Save buttonMasahiro Yamada1-1/+2
Currently, the initial state of the "Save" button is always active. If none of the CONFIG options are changed while loading the .config file, the "Save" button should be greyed out. This can be fixed by calling conf_read() after widget initialization. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-06-06kconfig: remove unneeded code for user-supplied values being out of rangeMasahiro Yamada1-13/+0
This is a leftover from commit ce1fc9345a59 ("kconfig: do not clear SYMBOL_DEF_USER when the value is out of range"). This code is now redundant because if a user-supplied value is out of range, the value adjusted by sym_validate_range() differs, and conf_unsaved has already been incremented a few lines above. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-29kconfig: remove redundant check in expr_join_or()Masahiro Yamada1-1/+1
The check for 'sym1 == sym2' is redundant here because it has already been done a few lines above: if (sym1 != sym2) return NULL; Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-29kconfig: fix comparison to constant symbols, 'm', 'n'Masahiro Yamada1-2/+4
Currently, comparisons to 'm' or 'n' result in incorrect output. [Test Code] config MODULES def_bool y modules config A def_tristate m config B def_bool A > n CONFIG_B is unset, while CONFIG_B=y is expected. The reason for the issue is because Kconfig compares the tristate values as strings. Currently, the .type fields in the constant symbol definitions, symbol_{yes,mod,no} are unspecified, i.e., S_UNKNOWN. When expr_calc_value() evaluates 'A > n', it checks the types of 'A' and 'n' to determine how to compare them. The left-hand side, 'A', is a tristate symbol with a value of 'm', which corresponds to a numeric value of 1. (Internally, 'y', 'm', and 'n' are represented as 2, 1, and 0, respectively.) The right-hand side, 'n', has an unknown type, so it is treated as the string "n" during the comparison. expr_calc_value() compares two values numerically only when both can have numeric values. Otherwise, they are compared as strings. symbol numeric value ASCII code ------------------------------------- y 2 0x79 m 1 0x6d n 0 0x6e 'm' is greater than 'n' if compared numerically (since 1 is greater than 0), but smaller than 'n' if compared as strings (since the ASCII code 0x6d is smaller than 0x6e). Specifying .type=S_TRISTATE for symbol_{yes,mod,no} fixes the above test code. Doing so, however, would cause a regression to the following test code. [Test Code 2] config MODULES def_bool n modules config A def_tristate n config B def_bool A = m You would get CONFIG_B=y, while CONFIG_B should not be set. The reason is because sym_get_string_value() turns 'm' into 'n' when the module feature is disabled. Consequently, expr_calc_value() evaluates 'A = n' instead of 'A = m'. This oddity has been hidden because the type of 'm' was previously S_UNKNOWN instead of S_TRISTATE. sym_get_string_value() should not tweak the string because the tristate value has already been correctly calculated. There is no reason to return the string "n" where its tristate value is mod. Fixes: 31847b67bec0 ("kconfig: allow use of relations other than (in)equality") Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-29kconfig: remove unused expr_is_no()Masahiro Yamada1-5/+0
This has not been used since commit e911503085ae ("Kconfig: Remove bad inference rules expr_eliminate_dups2()"). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-16kconfig: use sym_get_choice_menu() in sym_check_prop()Masahiro Yamada1-4/+2
Choices and their members are associated via the P_CHOICE property. Currently, prop_get_symbol(sym_get_choice_prop()) is used to obtain the choice of the given choice member. Replace it with sym_get_choice_menu(), which retrieves the choice without relying on P_CHOICE. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-14kconfig: lxdialog: remove initialization with A_NORMALMasahiro Yamada1-9/+0
A_NORMAL is zero, so the attribute is set to the default A_NORMAL without explicit assignment. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-14kconfig: m/nconf: merge two item_add_str() callsMasahiro Yamada2-9/+4
Just trivial cleanups. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-14kconfig: m/nconf: remove dead code to display value of bool choiceMasahiro Yamada2-29/+14
Previously, optional bool choices met the following conditions simultaneously: - sym_is_choice(sym) - sym_is_changeable(sym) - type == S_BOOLEAN It no longer occurs since 6a1215888e23 ("kconfig: remove 'optional' property support"). Remove the dead code. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-14kconfig: m/nconf: remove dead code to display children of choice membersMasahiro Yamada2-95/+71
This code previously displayed child symbols of the selected choice member. Since commit 7e3465f63a0a ("kconfig: do not reparent the menu inside a choice block"), choice members never have child symbols, therefore this is dead code. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-14kconfig: gconf: show checkbox for choice correctlyMasahiro Yamada1-7/+5
Currently, bool choices have a checkbox, but tristate choices do not. It is opposite. Bool choices should not have a checkbox, as they are fixed to 'y' since commit 6a1215888e23 ("kconfig: remove 'optional' property support"). Tristate choices, however, should have a checkbox to allow users to toggle the value. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-10kconfig: use menu_list_for_each_sym() in sym_check_choice_deps()Masahiro Yamada1-10/+15
Choices and their members are associated via the P_CHOICE property. Currently, sym_get_choice_prop() and expr_list_for_each_sym() are used to iterate on choice members. Replace them with menu_for_each_sub_entry(), which achieves the same without relying on P_CHOICE. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-10kconfig: use sym_get_choice_menu() in conf_write_defconfig()Masahiro Yamada1-4/+5
Choices and their members are associated via the P_CHOICE property. Currently, prop_get_symbol(sym_get_choice_prop()) is used to obtain the choice of the given choice member. Replace it with sym_get_choice_menu(), which retrieves the choice without relying on P_CHOICE. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-10kconfig: add sym_get_choice_menu() helperMasahiro Yamada2-0/+36
Choices and their members are associated via the P_CHOICE property. Currently, prop_get_symbol(sym_get_choice_prop()) is used to obtain the choice of the given choice member. We can do this without relying on P_CHOICE by checking the parent in the menu structure. Introduce a new helper to retrieve the choice if the given symbol is a choice member. This is intended to replace prop_get_symbol(sym_get_choice_prop()) and deprecate P_CHOICE eventually. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-10kconfig: turn defaults and additional prompt for choice members into errorMasahiro Yamada2-10/+40
menu_finalize() warns default properties for choice members and prompts outside the choice block. These should be hard errors. While I was here, I moved the checks to slim down menu_finalize(). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-10kconfig: turn missing prompt for choice members into errorMasahiro Yamada2-2/+14
Choice members must have a prompt; hence make it an error. While I was here, I moved the check to the parser to slim down _menu_finalize(). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-10kconfig: turn conf_choice() into void functionMasahiro Yamada1-6/+5
The return value of conf_choice() is not used. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-10kconfig: use linked list in sym_set_changed()Masahiro Yamada1-5/+3
Following the approach employed in commit bedf92362317 ("kconfig: use linked list in get_symbol_str() to iterate over menus"), simplify the iteration on the menus of the specified symbol. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-10kconfig: gconf: use MENU_CHANGED instead of SYMBOL_CHANGEDMasahiro Yamada1-6/+3
SYMBOL_CHANGED and MENU_CHANGED are used to update GUI frontends when the symbol value is changed. These are used inconsistently: SYMBOL_CHANGED in gconf.c and MENU_CHANGE in qconf.cc. MENU_CHANGED works more properly when a symbol has multiple prompts (although such code is not ideal). [test code] config FOO bool "foo prompt 1" config FOO bool "foo prompt 2" In gconfig, if one of the two checkboxes is clicked, only the first one is toggled. In xconfig, the two checkboxes work in sync. Replace SYMBOL_CHANGED in gconf.c with MENU_CHANGED to align with the xconfig behavior. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-10kconfig: gconf: remove debug codeMasahiro Yamada1-48/+1
This is not so useful. If necessary, you can insert printf() or whatever during debugging. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-10kconfig: gconf: update pane correctly after loading a config fileMasahiro Yamada1-1/+3
Every time a config file is loaded (either by clicking the "Load" button or selecting "File" -> "Load" from the menu), a new list is appended to the pane. The current tree needs to be cleared by calling gtk_tree_store_clear(). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-10kbuild: use $(src) instead of $(srctree)/$(src) for source directoryMasahiro Yamada1-4/+4
Kbuild conventionally uses $(obj)/ for generated files, and $(src)/ for checked-in source files. It is merely a convention without any functional difference. In fact, $(obj) and $(src) are exactly the same, as defined in scripts/Makefile.build: src := $(obj) When the kernel is built in a separate output directory, $(src) does not accurately reflect the source directory location. While Kbuild resolves this discrepancy by specifying VPATH=$(srctree) to search for source files, it does not cover all cases. For example, when adding a header search path for local headers, -I$(srctree)/$(src) is typically passed to the compiler. This introduces inconsistency between upstream and downstream Makefiles because $(src) is used instead of $(srctree)/$(src) for the latter. To address this inconsistency, this commit changes the semantics of $(src) so that it always points to the directory in the source tree. Going forward, the variables used in Makefiles will have the following meanings: $(obj) - directory in the object tree $(src) - directory in the source tree (changed by this commit) $(objtree) - the top of the kernel object tree $(srctree) - the top of the kernel source tree Consequently, $(srctree)/$(src) in upstream Makefiles need to be replaced with $(src). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
2024-05-02kconfig: remove SYMBOL_NO_WRITE flagMasahiro Yamada5-8/+4
This flag is set to symbols that are not intended to be written to the .config file. Since commit b75b0a819af9 ("kconfig: change defconfig_list option to environment variable"), SYMBOL_NO_WRITE is only set to choices. Therefore, (sym->flags & SYMBOL_NO_WRITE) is equivalent to sym_is_choice(sym). This flag is no longer necessary. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2024-05-02kconfig: remove 'optional' property supportMasahiro Yamada14-75/+5
The 'choice' statement is primarily used to exclusively select one option, but the 'optional' property allows all entries to be disabled. In the following example, both A and B can be disabled simultaneously: choice prompt "choose A, B, or nothing" optional config A bool "A" config B bool "B" endchoice You can achieve the equivalent outcome by other means. A common solution is to add another option to guard the choice block. In the following example, you can set ENABLE_A_B_CHOICE=n to disable the entire choice block: choice prompt "choose A or B" depends on ENABLE_A_B_CHOICE config A bool "A" config B bool "B" endchoice Another approach is to insert one more entry: choice prompt "choose A, B, or disable both" config A bool "A" config B bool "B" config DISABLE_A_AND_B bool "choose this to disable both A and B" endchoice Some real examples are DEBUG_INFO_NONE, INITRAMFS_COMPRESSION_NONE, LTO_NONE, etc. The 'optional' property is even more unnecessary for a tristate choice. Without the 'optional' property, you can disable A and B; you can set 'm' in the choice prompt, and disable A and B individually: choice prompt "choose one built-in or make them modular" config A tristate "A" config B tristate "B" endchoice In conclusion, the 'optional' property was unneeded. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <n.schier@avm.de>
2024-05-02kconfig: remove SYMBOL_CHOICE flagMasahiro Yamada6-9/+6
All symbols except choices have a name. Previously, choices were allowed to have a name, but commit c83f020973bc ("kconfig: remove named choice support") eliminated that possibility. Now, it is easy to distinguish choices from normal symbols; if the name is NULL, it is a choice. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <n.schier@avm.de>