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git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch updates from Huacai Chen:
- Add objtool support for LoongArch
- Add ORC stack unwinder support for LoongArch
- Add kernel livepatching support for LoongArch
- Select ARCH_HAS_CURRENT_STACK_POINTER in Kconfig
- Select HAVE_ARCH_USERFAULTFD_MINOR in Kconfig
- Some bug fixes and other small changes
* tag 'loongarch-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
LoongArch/crypto: Clean up useless assignment operations
LoongArch: Define the __io_aw() hook as mmiowb()
LoongArch: Remove superfluous flush_dcache_page() definition
LoongArch: Move {dmw,tlb}_virt_to_page() definition to page.h
LoongArch: Change __my_cpu_offset definition to avoid mis-optimization
LoongArch: Select HAVE_ARCH_USERFAULTFD_MINOR in Kconfig
LoongArch: Select ARCH_HAS_CURRENT_STACK_POINTER in Kconfig
LoongArch: Add kernel livepatching support
LoongArch: Add ORC stack unwinder support
objtool: Check local label in read_unwind_hints()
objtool: Check local label in add_dead_ends()
objtool/LoongArch: Enable orc to be built
objtool/x86: Separate arch-specific and generic parts
objtool/LoongArch: Implement instruction decoder
objtool/LoongArch: Enable objtool to be built
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The kernel CONFIG_UNWINDER_ORC option enables the ORC unwinder, which is
similar in concept to a DWARF unwinder. The difference is that the format
of the ORC data is much simpler than DWARF, which in turn allows the ORC
unwinder to be much simpler and faster.
The ORC data consists of unwind tables which are generated by objtool.
After analyzing all the code paths of a .o file, it determines information
about the stack state at each instruction address in the file and outputs
that information to the .orc_unwind and .orc_unwind_ip sections.
The per-object ORC sections are combined at link time and are sorted and
post-processed at boot time. The unwinder uses the resulting data to
correlate instruction addresses with their stack states at run time.
Most of the logic are similar with x86, in order to get ra info before ra
is saved into stack, add ra_reg and ra_offset into orc_entry. At the same
time, modify some arch-specific code to silence the objtool warnings.
Co-developed-by: Jinyang He <hejinyang@loongson.cn>
Signed-off-by: Jinyang He <hejinyang@loongson.cn>
Co-developed-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- Generate a list of built DTB files (arch/*/boot/dts/dtbs-list)
- Use more threads when building Debian packages in parallel
- Fix warnings shown during the RPM kernel package uninstallation
- Change OBJECT_FILES_NON_STANDARD_*.o etc. to take a relative path to
Makefile
- Support GCC's -fmin-function-alignment flag
- Fix a null pointer dereference bug in modpost
- Add the DTB support to the RPM package
- Various fixes and cleanups in Kconfig
* tag 'kbuild-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (67 commits)
kconfig: tests: test dependency after shuffling choices
kconfig: tests: add a test for randconfig with dependent choices
kconfig: tests: support KCONFIG_SEED for the randconfig runner
kbuild: rpm-pkg: add dtb files in kernel rpm
kconfig: remove unneeded menu_is_visible() call in conf_write_defconfig()
kconfig: check prompt for choice while parsing
kconfig: lxdialog: remove unused dialog colors
kconfig: lxdialog: fix button color for blackbg theme
modpost: fix null pointer dereference
kbuild: remove GCC's default -Wpacked-bitfield-compat flag
kbuild: unexport abs_srctree and abs_objtree
kbuild: Move -Wenum-{compare-conditional,enum-conversion} into W=1
kconfig: remove named choice support
kconfig: use linked list in get_symbol_str() to iterate over menus
kconfig: link menus to a symbol
kbuild: fix inconsistent indentation in top Makefile
kbuild: Use -fmin-function-alignment when available
alpha: merge two entries for CONFIG_ALPHA_GAMMA
alpha: merge two entries for CONFIG_ALPHA_EV4
kbuild: change DTC_FLAGS_<basetarget>.o to take the path relative to $(obj)
...
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Commit c8fb7d7e48d1 ("kconfig: fix broken dependency in randconfig-
generated .config") fixed the issue, but I did not add a test case.
This commit adds a test case that emulates the reported situation.
The test would fail without c8fb7d7e48d1.
To handle the choice "choose X", FOO must be calculated beforehand.
FOO depends on A, which is a member of another choice "choose A or B".
Kconfig _temporarily_ assumes the value of A to proceed. The choice
"choose A or B" will be shuffled later, but the result may or may not
meet "FOO depends on A". Kconfig should invalidate the symbol values
and recompute them.
In the real example for ARCH=arm64, the choice "Instrumentation type"
needs the value of CPU_BIG_ENDIAN. The choice "Endianness" will be
shuffled later.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Since commit 3b9a19e08960 ("kconfig: loop as long as we changed some
symbols in randconfig"), conf_set_all_new_symbols() is repeated until
there is no more choice left to be shuffled. The motivation was to
shuffle a choice nested in another choice.
Although commit 09d5873e4d1f ("kconfig: allow only 'config', 'comment',
and 'if' inside 'choice'") disallowed the nested choice structure,
we must still keep 3b9a19e08960 because there are still cases where
conf_set_all_new_symbols() must iterate.
scripts/kconfig/tests/choice_randomize/Kconfig is the test case.
The second choice depends on 'B', which is the member of the first
choice.
With 3b9a19e08960 reverted, we would never get the pattern specified by
scripts/kconfig/tests/choice_randomize/expected_config2.
A real example can be found in lib/Kconfig.debug. Without 3b9a19e08960,
the randconfig would not shuffle the "Compressed Debug information"
choice, which depends on DEBUG_INFO, which is derived from another
choice "Debug information".
My goal is to refactor Kconfig so that randconfig will work more
simply, without using the loop.
For now, let's add a test case to ensure all dependent choices are
shuffled, as it is a somewhat tricky case for the current Kconfig.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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This will help get consistent results for randconfig tests.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Some architectures, like aarch64 ones, need a dtb file to configure the
hardware. The default dtb file can be preloaded from u-boot, but the final
and/or more complete dtb file needs to be able to be loaded later from
rootfs.
Add the possible dtb files to the kernel rpm and mimic Fedora shipping
process, storing the dtb files in the module directory. These dtb files
will be copied to /boot directory by the install scripts, but add fallback
just in case, checking if the content in /boot directory is correct.
Mark the files installed to /boot as %ghost to make sure they will be
removed when the package is uninstalled.
Tested with Fedora Rawhide (x86_64 and aarch64) with dnf and rpm tools.
In addition, fallback was also tested after modifying the install scripts.
Signed-off-by: Jose Ignacio Tornos Martinez <jtornosm@redhat.com>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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When the condition 'sym == NULL' is met, the code will reach the
'next_menu' label regardless of the return value from menu_is_visible().
menu_is_visible() calculates some symbol values as a side-effect, for
instance by calling expr_calc_value(menu->visibility), but all the
symbol values will be calculated eventually.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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This can be checked on-the-fly.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Remove inputbox_order, searchbox, searchbox_title, searchbox_border
because they are initialized, but not used anywhere.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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For MENUCONFIG_COLOR=blackbg, the text in inactive buttons is invisible
because both the foreground and background are black.
Change the foreground color to white and remove the highlighting.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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If the find_fromsym() call fails and returns NULL, the warn() call
will dereference this NULL pointer and cause the program to crash.
This happened when I tried to build with "test_user_copy" module.
With this fix, it prints lots of warnings like this:
WARNING: modpost: lib/test_user_copy: section mismatch in reference: (unknown)+0x4 (section: .text.fixup) -> (unknown) (section: .init.text)
masahiroy@kernel.org:
The issue is reproduced with ARCH=arm allnoconfig + CONFIG_MODULES=y +
CONFIG_RUNTIME_TESTING_MENU=y + CONFIG_TEST_USER_COPY=m
Signed-off-by: Max Kellermann <max.kellermann@ionos.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Commit 4a5838ad9d2d ("kbuild: Add extra gcc checks") added the
-Wpacked-bitfield-compat flag, but there is no need to add it
explicitly.
GCC manual says:
"This warning is enabled by default. Use -Wno-packed-bitfield-compat
to disable this warning."
The test code in the manual:
struct foo
{
char a:4;
char b:8;
} __attribute__ ((packed));
... emits "note: offset of packed bit-field ābā has changed in GCC 4.4"
without W=3.
Let's remove it, as it is a default with GCC.
Clang does not support this flag, so its removal will not affect Clang
builds.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
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Commit 25b146c5b8ce ("kbuild: allow Kbuild to start from any directory")
exported abs_srctree and abs_objtree to avoid recomputation after the
sub-make. However, this approach turned out to be fragile.
Commit 5fa94ceb793e ("kbuild: set correct abs_srctree and abs_objtree
for package builds") moved them above "ifneq ($(sub_make_done),1)",
eliminating the need for exporting them.
These are only needed in the top Makefile. If an absolute path is
required in sub-directories, you can use $(abspath ) or $(realpath )
as needed.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
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Clang enables -Wenum-enum-conversion and -Wenum-compare-conditional
under -Wenum-conversion. A recent change in Clang strengthened these
warnings and they appear frequently in common builds, primarily due to
several instances in common headers but there are quite a few drivers
that have individual instances as well.
include/linux/vmstat.h:508:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
508 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
509 | item];
| ~~~~
drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c:955:24: warning: conditional expression between different enumeration types ('enum iwl_mac_beacon_flags' and 'enum iwl_mac_beacon_flags_v1') [-Wenum-compare-conditional]
955 | flags |= is_new_rate ? IWL_MAC_BEACON_CCK
| ^ ~~~~~~~~~~~~~~~~~~
956 | : IWL_MAC_BEACON_CCK_V1;
| ~~~~~~~~~~~~~~~~~~~~~
drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c:1120:21: warning: conditional expression between different enumeration types ('enum iwl_mac_beacon_flags' and 'enum iwl_mac_beacon_flags_v1') [-Wenum-compare-conditional]
1120 | 0) > 10 ?
| ^
1121 | IWL_MAC_BEACON_FILS :
| ~~~~~~~~~~~~~~~~~~~
1122 | IWL_MAC_BEACON_FILS_V1;
| ~~~~~~~~~~~~~~~~~~~~~~
Doing arithmetic between or returning two different types of enums could
be a bug, so each of the instance of the warning needs to be evaluated.
Unfortunately, as mentioned above, there are many instances of this
warning in many different configurations, which can break the build when
CONFIG_WERROR is enabled.
To avoid introducing new instances of the warnings while cleaning up the
disruption for the majority of users, disable these warnings for the
default build while leaving them on for W=1 builds.
Cc: stable@vger.kernel.org
Closes: https://github.com/ClangBuiltLinux/linux/issues/2002
Link: https://github.com/llvm/llvm-project/commit/8c2ae42b3e1c6aa7c18f873edcebff7c0b45a37e
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Commit 5a1aa8a1aff6 ("kconfig: add named choice group") did not provide
enough explanation regarding its benefits. A use case was found in
another project [1] sometime later, this feature has never been used in
the kernel.
[1]: https://lore.kernel.org/all/201012150034.01356.yann.morin.1998@anciens.enib.fr/
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
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Currently, get_symbol_str() uses a tricky approach to traverse the
associated menus.
With relevant menus now linked to the symbol using a linked list,
use list_for_each_entry() for iterating on the menus.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
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Currently, there is no direct link from (struct symbol) to (struct menu).
It is still possible to access associated menus through the P_SYMBOL
property, because property::menu is the relevant menu entry, but it
results in complex code, as seen in get_symbol_str().
Use a linked list for simpler traversal of relevant menus.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
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For the same rationale as commit 54b8ae66ae1a ("kbuild: change
*FLAGS_<basetarget>.o to take the path relative to $(obj)").
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
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Commit 54b8ae66ae1a ("kbuild: change *FLAGS_<basetarget>.o to take the
path relative to $(obj)") changed the syntax of per-file compiler flags.
The situation is the same for the following variables:
OBJECT_FILES_NON_STANDARD_<basetarget>.o
GCOV_PROFILE_<basetarget>.o
KASAN_SANITIZE_<basetarget>.o
KMSAN_SANITIZE_<basetarget>.o
KMSAN_ENABLE_CHECKS_<basetarget>.o
UBSAN_SANITIZE_<basetarget>.o
KCOV_INSTRUMENT_<basetarget>.o
KCSAN_SANITIZE_<basetarget>.o
KCSAN_INSTRUMENT_BARRIERS_<basetarget>.o
The <basetarget> is the filename of the target with its directory and
suffix stripped.
This syntax comes into a trouble when two files with the same basename
appear in one Makefile, for example:
obj-y += dir1/foo.o
obj-y += dir2/foo.o
OBJECT_FILES_NON_STANDARD_foo.o := y
OBJECT_FILES_NON_STANDARD_foo.o is applied to both dir1/foo.o and
dir2/foo.o. This syntax is not flexbile enough to handle cases where
one of them is a standard object, but the other is not.
It is more sensible to use the relative path to the Makefile, like this:
obj-y += dir1/foo.o
OBJECT_FILES_NON_STANDARD_dir1/foo.o := y
obj-y += dir2/foo.o
OBJECT_FILES_NON_STANDARD_dir2/foo.o := y
To maintain the current behavior, I made adjustments to the following two
Makefiles:
- arch/x86/entry/vdso/Makefile, which compiles vclock_gettime.o, vgetcpu.o,
and their vdso32 variants.
- arch/x86/kvm/Makefile, which compiles vmx/vmenter.o and svm/vmenter.o
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Acked-by: Sean Christopherson <seanjc@google.com>
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When a checklist is opened, the cursor is rendered in a wrong position
(after the last list element on the screen). You can observe it by
opening any checklist in menuconfig.
Added wmove() to set the cursor in the proper position, just like in
menubox.c. Removed wnoutrefresh(dialog) because dialog window has
already been updated in print_buttons(). Replaced wnoutrefresh(list) and
doupdate() calls with one wrefresh(list) call.
Signed-off-by: Matthew Bystrin <dev.mbstr@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Use helper macros in hashtable.h for generic hashtable implementation.
We can git rid of the hash head index of for_all_symbols().
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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for_all_symbols() iterates in the symbol hash table. The order of
iteration depends on the hash table implementation.
If you use it for printing errors, they are shown in random order.
For example, the order of following test input and the corresponding
error do not match:
- scripts/kconfig/tests/err_recursive_dep/Kconfig
- scripts/kconfig/tests/err_recursive_dep/expected_stderr
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Do not feed back the choice type to choice values.
Each choice value should explicitly specify 'bool' or 'tristate',
as all the Kconfig files already do. If the type were missing,
"config symbol defined without type" would be shown.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Currently, a linked list is used to keep track of all the Kconfig
files that have ever been parsed. Every time the "source" statement
is encountered, the linked list is traversed to check if the file has
been opened before. This prevents the same file from being recorded
in include/config/auto.conf.cmd again.
Given 1500+ Kconfig files parsed, a hashtable is now a more optimal
data structure.
By the way, you may wonder why we check this in the first place.
It matters only when the same file is included multiple times.
In old days, such a use case was forbidden, but commit f094f8a1b273
("kconfig: allow multiple inclusion of the same file") provided a bit
more flexibility. Of course, it is almost hypothetical...
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Remove the 'static' qualifier from strhash() so that it can be accessed
from other files. Move it to util.c, which is a more appropriate location.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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To use ARRAY_SIZE from other files, move it to its own header,
just like include/linux/array_size.h.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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This is similar to include/linux/hashtable.h, but the implementation
has been simplified.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Import more macros and inline functions from include/linux/list.h
and include/linux/types.h.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Update the existing macros and inline functions based on
include/linux/list.h.
The variable name '_new' can be reverted to 'new' because this header
is no longer included from the C++ file, scripts/kconfig/qconf.cc.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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The struct list_head is often embedded in other structures, while other
code is used in C functions.
By separating struct list_head into its own header, other headers are no
longer required to include the entire list.h.
This is similar to the kernel space, where struct list_head is defined
in <linux/types.h> instead of <linux/list.h>.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Currently, file_lookup() returns a pointer to (struct file), but the
callers use only file->name.
Make it return the ->name member directly.
This adjustment encapsulates struct file and file_list as internal
implementation.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Call malloc() just once to allocate needed memory.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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struct file has two link nodes, 'next' and 'parent'.
The former is used to link files in the 'file_list' linked list,
which manages the list of Kconfig files seen so far.
The latter is used to link files in the 'current_file' linked list,
which manages the inclusion ("source") tree.
The latter should be tracked together with the lexer state.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Replace the remaining current_file->name in the lexer context.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Currently, cur_filename is updated at the first token of each statement.
However, this seems unnecessary based on my understanding; the parser
can use the same variable as the lexer tracks.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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The 'file->name' and 'name' are the same in this function.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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struct property is linked to struct file for diagnostic purposes.
It is always used to retrieve the file name through prop->file->name.
Associate struct property with the file name directly.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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struct menu is linked to struct file for diagnostic purposes.
It is always used to retrieve the file name through menu->file->name.
Associate struct menu with the file name directly.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Now zconf_curname() and zconf_lineno() are so simple that they just
return cur_filename, cur_lineno, respectively.
Remove these functions, and then use cur_filename and cur_lineno
directly.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Replace current_pos with separate variables representing the file name
and the line number, respectively.
No functional change is intended.
By the way, you might wonder why the "<none>" fallback exists in
zconf_curname(). menu_add_symbol() saves the current file and the line
number. It is intended to be called only during the yyparse() time.
However, menu_finalize() calls it, where there is no file being parsed.
This is a long-standing hack that should be fixed later. I left a FIXME
comment.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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These are needed only for the parse stage. Move the prototypes into
a separate header to make sure they are not used after that.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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This allows preprocess.c to free up all of its resources when the parse
stage is finished. It also ensures conf_write_autoconf_cmd() produces
consistent results even if called multiple times for any reason.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Currently, include/config/autoconf.cmd saves included Kconfig files in
reverse order. While this is not a big deal, it is inconsistent with
other *.cmd files generated by fixdep.
Output the included Kconfig files in the included order.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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sym_find("n") is equivalent to &symbol_no.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Commit 1a7a8c6fd8ca ("kconfig: allow long lines in config file") added
a self-implemented getline() for better portability.
However, getline() is standardized [1] and already used in other programs
such as scripts/kallsyms.c.
Use getline() provided by libc.
[1]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/getdelim.html
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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There is no definition, no caller for lookup_file().
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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yyerror() reports the line number of the next line.
This +1 adjustment was introduced more than 20 years ago [1]. At that
time, the line number was decremented then incremented back and forth.
The line number management was refactored in a more maintainable way.
Such compensation is no longer needed.
[1]: https://git.kernel.org/pub/scm/linux/kernel/git/history/history.git/commit/?id=d4f8a4530eb07a1385fd17b0e62a7dce97486f49
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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A macro placed at the end of a file with no newline causes an infinite
loop.
[Test Kconfig]
$(info,hello)
\ No newline at end of file
I realized that flex-provided input() returns 0 instead of EOF when it
reaches the end of a file.
Fixes: 104daea149c4 ("kconfig: reference environment variables directly and remove 'option env='")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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This reverts commit 6ef41e22a320d95a246d45b673aa7247cc1bbf7b.
If this is still needed, we can bring it back.
However, I'd like to understand why 'new-kernel-pkg --remove' is
needed for uninstallation, while 'new-kernel-pkg --install' was not
called during the installation.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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