mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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746b25b1aa
- Support 'make compile_commands.json' to generate the compilation database more easily, avoiding stale entries - Support 'make clang-analyzer' and 'make clang-tidy' for static checks using clang-tidy - Preprocess scripts/modules.lds.S to allow CONFIG options in the module linker script - Drop cc-option tests from compiler flags supported by our minimal GCC/Clang versions - Use always 12-digits commit hash for CONFIG_LOCALVERSION_AUTO=y - Use sha1 build id for both BFD linker and LLD - Improve deb-pkg for reproducible builds and rootless builds - Remove stale, useless scripts/namespace.pl - Turn -Wreturn-type warning into error - Fix build error of deb-pkg when CONFIG_MODULES=n - Replace 'hostname' command with more portable 'uname -n' - Various Makefile cleanups -----BEGIN PGP SIGNATURE----- iQJJBAABCgAzFiEEbmPs18K1szRHjPqEPYsBB53g2wYFAl+RfS0VHG1hc2FoaXJv eUBrZXJuZWwub3JnAAoJED2LAQed4NsGG1QP/2hzoMzK1YXErPUhGrhYU1rxz7Nu HkLTIkyKF1HPwSJf5XyNW/FTBI4SDlkNoVg/weEDCS1yFxxpvQLIck8ChzA1kIIM P+1IfBWOTzqn91XsapU2zwSno3gylphVchVIvYAB3oLUotGeMSluy1cQtBRzyA5D rj2Q7H8fzkzk3YoBcBC/BOKDlfo/usqQ1X/gsfRFwN/BJxeZSYoujNBE7KtHaDsd 8K/ggBIqmST4NBn+M8c11d8CxzvWbtG1gq3EkUL5nG8T13DsGn1EFC0SPt85bkvv f9YywfJi37HixhZzK6tXYjN/PWoiEY6z90mhd0NtZghQT7kQMiTQ3sWrM8dX3ssf phBzO94uFQDjhyxOaSSsCoI/TIciAPo4+G8PNjcaEtj63IEfhEz/dnlstYwY5Y9P Pp3aZtVjSGJwGW2u2EUYj6paFVqjf6DXQjQKPNHnsYCEidIvFTjjguRGvx9gl6mx yd8oseOsAtOEf0alRe9MMdvN17O3UrRAxgBdap7fktg02TLVRGxZIbuwKmBf29ho ORl9zeFkYBn6XQFyuItJoXy/kYFyHDaBEPYCRQcY4dwqcjZIiAc/FhYbqYthJ59L 5vLN2etmDIVSuUv1J5nBqHHGCqJChykbqg7riQ651dCNKw4gZB8ctCay2lXhBXMg 1mqOcoG5WWL7//F+ =tZRN -----END PGP SIGNATURE----- Merge tag 'kbuild-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - Support 'make compile_commands.json' to generate the compilation database more easily, avoiding stale entries - Support 'make clang-analyzer' and 'make clang-tidy' for static checks using clang-tidy - Preprocess scripts/modules.lds.S to allow CONFIG options in the module linker script - Drop cc-option tests from compiler flags supported by our minimal GCC/Clang versions - Use always 12-digits commit hash for CONFIG_LOCALVERSION_AUTO=y - Use sha1 build id for both BFD linker and LLD - Improve deb-pkg for reproducible builds and rootless builds - Remove stale, useless scripts/namespace.pl - Turn -Wreturn-type warning into error - Fix build error of deb-pkg when CONFIG_MODULES=n - Replace 'hostname' command with more portable 'uname -n' - Various Makefile cleanups * tag 'kbuild-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (34 commits) kbuild: Use uname for LINUX_COMPILE_HOST detection kbuild: Only add -fno-var-tracking-assignments for old GCC versions kbuild: remove leftover comment for filechk utility treewide: remove DISABLE_LTO kbuild: deb-pkg: clean up package name variables kbuild: deb-pkg: do not build linux-headers package if CONFIG_MODULES=n kbuild: enforce -Werror=return-type scripts: remove namespace.pl builddeb: Add support for all required debian/rules targets builddeb: Enable rootless builds builddeb: Pass -n to gzip for reproducible packages kbuild: split the build log of kallsyms kbuild: explicitly specify the build id style scripts/setlocalversion: make git describe output more reliable kbuild: remove cc-option test of -Werror=date-time kbuild: remove cc-option test of -fno-stack-check kbuild: remove cc-option test of -fno-strict-overflow kbuild: move CFLAGS_{KASAN,UBSAN,KCSAN} exports to relevant Makefiles kbuild: remove redundant CONFIG_KASAN check from scripts/Makefile.kasan kbuild: do not create built-in objects for external module builds ...
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.. _submitchecklist:
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Linux Kernel patch submission checklist
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Here are some basic things that developers should do if they want to see their
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kernel patch submissions accepted more quickly.
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These are all above and beyond the documentation that is provided in
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:ref:`Documentation/process/submitting-patches.rst <submittingpatches>`
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and elsewhere regarding submitting Linux kernel patches.
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1) If you use a facility then #include the file that defines/declares
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that facility. Don't depend on other header files pulling in ones
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that you use.
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2) Builds cleanly:
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a) with applicable or modified ``CONFIG`` options ``=y``, ``=m``, and
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``=n``. No ``gcc`` warnings/errors, no linker warnings/errors.
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b) Passes ``allnoconfig``, ``allmodconfig``
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c) Builds successfully when using ``O=builddir``
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d) Any Documentation/ changes build successfully without new warnings/errors.
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Use ``make htmldocs`` or ``make pdfdocs`` to check the build and
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fix any issues.
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3) Builds on multiple CPU architectures by using local cross-compile tools
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or some other build farm.
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4) ppc64 is a good architecture for cross-compilation checking because it
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tends to use ``unsigned long`` for 64-bit quantities.
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5) Check your patch for general style as detailed in
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:ref:`Documentation/process/coding-style.rst <codingstyle>`.
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Check for trivial violations with the patch style checker prior to
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submission (``scripts/checkpatch.pl``).
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You should be able to justify all violations that remain in
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your patch.
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6) Any new or modified ``CONFIG`` options do not muck up the config menu and
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default to off unless they meet the exception criteria documented in
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``Documentation/kbuild/kconfig-language.rst`` Menu attributes: default value.
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7) All new ``Kconfig`` options have help text.
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8) Has been carefully reviewed with respect to relevant ``Kconfig``
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combinations. This is very hard to get right with testing -- brainpower
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pays off here.
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9) Check cleanly with sparse.
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10) Use ``make checkstack`` and fix any problems that it finds.
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.. note::
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``checkstack`` does not point out problems explicitly,
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but any one function that uses more than 512 bytes on the stack is a
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candidate for change.
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11) Include :ref:`kernel-doc <kernel_doc>` to document global kernel APIs.
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(Not required for static functions, but OK there also.) Use
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``make htmldocs`` or ``make pdfdocs`` to check the
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:ref:`kernel-doc <kernel_doc>` and fix any issues.
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12) Has been tested with ``CONFIG_PREEMPT``, ``CONFIG_DEBUG_PREEMPT``,
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``CONFIG_DEBUG_SLAB``, ``CONFIG_DEBUG_PAGEALLOC``, ``CONFIG_DEBUG_MUTEXES``,
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``CONFIG_DEBUG_SPINLOCK``, ``CONFIG_DEBUG_ATOMIC_SLEEP``,
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``CONFIG_PROVE_RCU`` and ``CONFIG_DEBUG_OBJECTS_RCU_HEAD`` all
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simultaneously enabled.
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13) Has been build- and runtime tested with and without ``CONFIG_SMP`` and
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``CONFIG_PREEMPT.``
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16) All codepaths have been exercised with all lockdep features enabled.
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17) All new ``/proc`` entries are documented under ``Documentation/``
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18) All new kernel boot parameters are documented in
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``Documentation/admin-guide/kernel-parameters.rst``.
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19) All new module parameters are documented with ``MODULE_PARM_DESC()``
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20) All new userspace interfaces are documented in ``Documentation/ABI/``.
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See ``Documentation/ABI/README`` for more information.
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Patches that change userspace interfaces should be CCed to
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linux-api@vger.kernel.org.
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21) Check that it all passes ``make headers_check``.
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22) Has been checked with injection of at least slab and page-allocation
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failures. See ``Documentation/fault-injection/``.
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If the new code is substantial, addition of subsystem-specific fault
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injection might be appropriate.
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23) Newly-added code has been compiled with ``gcc -W`` (use
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``make EXTRA_CFLAGS=-W``). This will generate lots of noise, but is good
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for finding bugs like "warning: comparison between signed and unsigned".
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24) Tested after it has been merged into the -mm patchset to make sure
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that it still works with all of the other queued patches and various
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changes in the VM, VFS, and other subsystems.
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25) All memory barriers {e.g., ``barrier()``, ``rmb()``, ``wmb()``} need a
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comment in the source code that explains the logic of what they are doing
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and why.
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26) If any ioctl's are added by the patch, then also update
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``Documentation/userspace-api/ioctl/ioctl-number.rst``.
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27) If your modified source code depends on or uses any of the kernel
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APIs or features that are related to the following ``Kconfig`` symbols,
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then test multiple builds with the related ``Kconfig`` symbols disabled
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and/or ``=m`` (if that option is available) [not all of these at the
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same time, just various/random combinations of them]:
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``CONFIG_SMP``, ``CONFIG_SYSFS``, ``CONFIG_PROC_FS``, ``CONFIG_INPUT``, ``CONFIG_PCI``, ``CONFIG_BLOCK``, ``CONFIG_PM``, ``CONFIG_MAGIC_SYSRQ``,
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``CONFIG_NET``, ``CONFIG_INET=n`` (but latter with ``CONFIG_NET=y``).
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