pm24.git/scripts, branch rust-6.14

rust: use host dylib naming convention to support macOS

2025-01-10T00:01:24Z

Because the `macros` crate exposes procedural macros, it must be compiled as a dynamic library (so it can be loaded by the compiler at compile-time). Before this change the resulting artifact was always named `libmacros.so`, which works on hosts where this matches the naming convention for dynamic libraries. However the proper name on macOS would be `libmacros.dylib`. This turns out to matter even when the dependency is passed with a path (`--extern macros=path/to/libmacros.so` rather than `--extern macros`) because rustc uses the file name to infer the type of the library (see link). This is because there's no way to specify both the path to and the type of the external library via CLI flags. The compiler could speculatively parse the file to determine its type, but it does not do so today. This means that libraries that match neither rustc's naming convention for static libraries nor the platform's naming convention for dynamic libraries are *rejected*. The only solution I've found is to follow the host platform's naming convention. This patch does that by querying the compiler to determine the appropriate name for the artifact. This allows the kernel to build with CONFIG_RUST=y on macOS. Link: https://github.com/rust-lang/rust/blob/d829780/compiler/rustc_metadata/src/locator.rs#L728-L752 Tested-by: Daniel Gomez Co-developed-by: Fiona Behrens Signed-off-by: Fiona Behrens Signed-off-by: Tamir Duberstein Tested-by: Andreas Hindborg Link: https://lore.kernel.org/r/20241216-b4-dylib-host-macos-v7-1-cfc507681447@gmail.com [ Added `MAKEFLAGS=`s to avoid jobserver warnings. Removed space. Reworded title. - Miguel ] Signed-off-by: Miguel Ojeda

rust: document `bindgen` 0.71.0 regression

2025-01-09T23:17:00Z

`bindgen` 0.71.0 regressed [1] on the "`--version` requires header" issue which appeared in 0.69.0 first [2] and was fixed in 0.69.1. It has been fixed again in 0.71.1 [3]. Thus document it so that, when we upgrade the minimum past 0.69.0 in the future, we do not forget that we cannot remove the workaround until we arrive at 0.71.1 at least. Link: https://github.com/rust-lang/rust-bindgen/issues/3039 [1] Link: https://github.com/rust-lang/rust-bindgen/issues/2677 [2] Link: https://github.com/rust-lang/rust-bindgen/blob/main/CHANGELOG.md#v0711-2024-12-09 [3] Reviewed-by: Fiona Behrens Reviewed-by: Alice Ryhl Link: https://lore.kernel.org/r/20241209212544.1977065-1-ojeda@kernel.org Signed-off-by: Miguel Ojeda

Merge tag 'docs-6.13-fix' of git://git.lwn.net/linux

2024-12-13T17:46:02Z

Pull documentation fix from Jonathan Corbet: "A single fix for a docs-build regression caused by the EXPORT_SYMBOL_NS() mass change" * tag 'docs-6.13-fix' of git://git.lwn.net/linux: scripts/kernel-doc: Get -export option working again

scripts/kernel-doc: Get -export option working again

2024-12-11T16:15:26Z

Since commit cdd30ebb1b9f ("module: Convert symbol namespace to string literal"), exported symbols marked by EXPORT_SYMBOL_NS(_GPL) are ignored by "kernel-doc -export" in fresh build of "make htmldocs". This is because regex in the perl script for those markers fails to match the new signatures: - EXPORT_SYMBOL_NS(symbol, "ns"); - EXPORT_SYMBOL_NS_GPL(symbol, "ns"); Update the regex so that it matches quoted string. Note: Escape sequence of \w is good for C identifiers, but can be too strict for quoted strings. Instead, use \S, which matches any non-whitespace character, for compatibility with possible extension of namespace convention in the future [1]. Fixes: cdd30ebb1b9f ("module: Convert symbol namespace to string literal") Link: https://lore.kernel.org/CAK7LNATMufXP0EA6QUE9hBkZMa6vJO6ZiaYuak2AhOrd2nSVKQ@mail.gmail.com/ [1] Signed-off-by: Akira Yokosawa Cc: Masahiro Yamada Tested-by: Randy Dunlap Acked-by: Randy Dunlap Signed-off-by: Jonathan Corbet Link: https://lore.kernel.org/r/e5c43f36-45cd-49f4-b7b8-ff342df3c7a4@gmail.com

openrisc: place exception table at the head of vmlinux

2024-12-10T12:04:19Z

Since commit 0043ecea2399 ("vmlinux.lds.h: Adjust symbol ordering in text output section"), the exception table in arch/openrisc/kernel/head.S is no longer positioned at the very beginning of the kernel image, which causes a boot failure. Currently, the exception table resides in the regular .text section. Previously, it was placed at the head by relying on the linker receiving arch/openrisc/kernel/head.o as the first object. However, this behavior has changed because sections like .text.{asan,unknown,unlikely,hot} now precede the regular .text section. The .head.text section is intended for entry points requiring special placement. However, in OpenRISC, this section has been misused: instead of the entry points, it contains boot code meant to be discarded after booting. This feature is typically handled by the .init.text section. This commit addresses the issue by replacing the current __HEAD marker with __INIT and re-annotating the entry points with __HEAD. Additionally, it adds __REF to entry.S to suppress the following modpost warning: WARNING: modpost: vmlinux: section mismatch in reference: _tng_kernel_start+0x70 (section: .text) -> _start (section: .init.text) Fixes: 0043ecea2399 ("vmlinux.lds.h: Adjust symbol ordering in text output section") Reported-by: Guenter Roeck Closes: https://lore.kernel.org/all/5e032233-5b65-4ad5-ac50-d2eb6c00171c@roeck-us.net/#t Signed-off-by: Masahiro Yamada Tested-by: Guenter Roeck Reviewed-by: Rong Xu Signed-off-by: Stafford Horne

Merge tag 'kbuild-fixes-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

2024-12-08T20:01:06Z

Pull Kbuild fixes from Masahiro Yamada: - Fix a section mismatch warning in modpost - Fix Debian package build error with the O= option * tag 'kbuild-fixes-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kbuild: deb-pkg: fix build error with O= modpost: Add .irqentry.text to OTHER_SECTIONS

kbuild: deb-pkg: fix build error with O=

2024-12-08T08:11:34Z

Since commit 13b25489b6f8 ("kbuild: change working directory to external module directory with M="), the Debian package build fails if a relative path is specified with the O= option. $ make O=build bindeb-pkg [ snip ] dpkg-deb: building package 'linux-image-6.13.0-rc1' in '../linux-image-6.13.0-rc1_6.13.0-rc1-6_amd64.deb'. Rebuilding host programs with x86_64-linux-gnu-gcc... make[6]: Entering directory '/home/masahiro/linux/build' /home/masahiro/linux/Makefile:190: *** specified kernel directory "build" does not exist. Stop. This occurs because the sub_make_done flag is cleared, even though the working directory is already in the output directory. Passing KBUILD_OUTPUT=. resolves the issue. Fixes: 13b25489b6f8 ("kbuild: change working directory to external module directory with M=") Reported-by: Charlie Jenkins Closes: https://lore.kernel.org/all/Z1DnP-GJcfseyrM3@ghost/ Tested-by: Charlie Jenkins Reviewed-by: Charlie Jenkins Signed-off-by: Masahiro Yamada

modpost: Add .irqentry.text to OTHER_SECTIONS

2024-12-08T08:11:34Z

The compiler can fully inline the actual handler function of an interrupt entry into the .irqentry.text entry point. If such a function contains an access which has an exception table entry, modpost complains about a section mismatch: WARNING: vmlinux.o(__ex_table+0x447c): Section mismatch in reference ... The relocation at __ex_table+0x447c references section ".irqentry.text" which is not in the list of authorized sections. Add .irqentry.text to OTHER_SECTIONS to cure the issue. Reported-by: Sergey Senozhatsky Signed-off-by: Thomas Gleixner Cc: stable@vger.kernel.org # needed for linux-5.4-y Link: https://lore.kernel.org/all/20241128111844.GE10431@google.com/ Signed-off-by: Masahiro Yamada

scripts/nsdeps: get 'make nsdeps' working again

2024-12-03T16:22:25Z

Since commit cdd30ebb1b9f ("module: Convert symbol namespace to string literal"), when MODULE_IMPORT_NS() is missing, 'make nsdeps' inserts pointless code: MODULE_IMPORT_NS("ns"); Here, "ns" is not a namespace, but the variable in the semantic patch. It must not be quoted. Instead, a string literal must be passed to Coccinelle. Fixes: cdd30ebb1b9f ("module: Convert symbol namespace to string literal") Signed-off-by: Masahiro Yamada Signed-off-by: Linus Torvalds

module: Convert symbol namespace to string literal

2024-12-02T19:34:44Z

Clean up the existing export namespace code along the same lines of commit 33def8498fdd ("treewide: Convert macro and uses of __section(foo) to __section("foo")") and for the same reason, it is not desired for the namespace argument to be a macro expansion itself. Scripted using git grep -l -e MODULE_IMPORT_NS -e EXPORT_SYMBOL_NS | while read file; do awk -i inplace ' /^#define EXPORT_SYMBOL_NS/ { gsub(/__stringify$ns$/, "ns"); print; next; } /^#define MODULE_IMPORT_NS/ { gsub(/__stringify$ns$/, "ns"); print; next; } /MODULE_IMPORT_NS/ { $0 = gensub(/MODULE_IMPORT_NS$([^)]*)$/, "MODULE_IMPORT_NS(\"\\1\")", "g"); } /EXPORT_SYMBOL_NS/ { if ($0 ~ /(EXPORT_SYMBOL_NS[^(]*)$([^,]+),/) { if ($0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)$/ && $0 !~ /(EXPORT_SYMBOL_NS[^(]*)/ && $0 !~ /^my/) { getline line; gsub(/[[:space:]]*\\$/, ""); gsub(/[[:space:]]/, "", line); $0 = $0 " " line; } $0 = gensub(/(EXPORT_SYMBOL_NS[^(]*)$([^,]+), ([^)]+)$/, "\\1(\\2, \"\\3\")", "g"); } } { print }' $file; done Requested-by: Masahiro Yamada Signed-off-by: Peter Zijlstra (Intel) Link: https://mail.google.com/mail/u/2/#inbox/FMfcgzQXKWgMmjdFwwdsfgxzKpVHWPlc Acked-by: Greg KH Signed-off-by: Linus Torvalds