mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-15 09:46:46 +07:00
72deb455b5
Currently support for 64-bit sector_t and blkcnt_t is optional on 32-bit architectures. These types are required to support block device and/or file sizes larger than 2 TiB, and have generally defaulted to on for a long time. Enabling the option only increases the i386 tinyconfig size by 145 bytes, and many data structures already always use 64-bit values for their in-core and on-disk data structures anyway, so there should not be a large change in dynamic memory usage either. Dropping this option removes a somewhat weird non-default config that has cause various bugs or compiler warnings when actually used. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
120 lines
4.8 KiB
ReStructuredText
120 lines
4.8 KiB
ReStructuredText
.. _submitchecklist:
|
|
|
|
Linux Kernel patch submission checklist
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
Here are some basic things that developers should do if they want to see their
|
|
kernel patch submissions accepted more quickly.
|
|
|
|
These are all above and beyond the documentation that is provided in
|
|
:ref:`Documentation/process/submitting-patches.rst <submittingpatches>`
|
|
and elsewhere regarding submitting Linux kernel patches.
|
|
|
|
|
|
1) If you use a facility then #include the file that defines/declares
|
|
that facility. Don't depend on other header files pulling in ones
|
|
that you use.
|
|
|
|
2) Builds cleanly:
|
|
|
|
a) with applicable or modified ``CONFIG`` options ``=y``, ``=m``, and
|
|
``=n``. No ``gcc`` warnings/errors, no linker warnings/errors.
|
|
|
|
b) Passes ``allnoconfig``, ``allmodconfig``
|
|
|
|
c) Builds successfully when using ``O=builddir``
|
|
|
|
3) Builds on multiple CPU architectures by using local cross-compile tools
|
|
or some other build farm.
|
|
|
|
4) ppc64 is a good architecture for cross-compilation checking because it
|
|
tends to use ``unsigned long`` for 64-bit quantities.
|
|
|
|
5) Check your patch for general style as detailed in
|
|
:ref:`Documentation/process/coding-style.rst <codingstyle>`.
|
|
Check for trivial violations with the patch style checker prior to
|
|
submission (``scripts/checkpatch.pl``).
|
|
You should be able to justify all violations that remain in
|
|
your patch.
|
|
|
|
6) Any new or modified ``CONFIG`` options do not muck up the config menu and
|
|
default to off unless they meet the exception criteria documented in
|
|
``Documentation/kbuild/kconfig-language.txt`` Menu attributes: default value.
|
|
|
|
7) All new ``Kconfig`` options have help text.
|
|
|
|
8) Has been carefully reviewed with respect to relevant ``Kconfig``
|
|
combinations. This is very hard to get right with testing -- brainpower
|
|
pays off here.
|
|
|
|
9) Check cleanly with sparse.
|
|
|
|
10) Use ``make checkstack`` and ``make namespacecheck`` and fix any problems
|
|
that they find.
|
|
|
|
.. note::
|
|
|
|
``checkstack`` does not point out problems explicitly,
|
|
but any one function that uses more than 512 bytes on the stack is a
|
|
candidate for change.
|
|
|
|
11) Include :ref:`kernel-doc <kernel_doc>` to document global kernel APIs.
|
|
(Not required for static functions, but OK there also.) Use
|
|
``make htmldocs`` or ``make pdfdocs`` to check the
|
|
:ref:`kernel-doc <kernel_doc>` and fix any issues.
|
|
|
|
12) Has been tested with ``CONFIG_PREEMPT``, ``CONFIG_DEBUG_PREEMPT``,
|
|
``CONFIG_DEBUG_SLAB``, ``CONFIG_DEBUG_PAGEALLOC``, ``CONFIG_DEBUG_MUTEXES``,
|
|
``CONFIG_DEBUG_SPINLOCK``, ``CONFIG_DEBUG_ATOMIC_SLEEP``,
|
|
``CONFIG_PROVE_RCU`` and ``CONFIG_DEBUG_OBJECTS_RCU_HEAD`` all
|
|
simultaneously enabled.
|
|
|
|
13) Has been build- and runtime tested with and without ``CONFIG_SMP`` and
|
|
``CONFIG_PREEMPT.``
|
|
|
|
16) All codepaths have been exercised with all lockdep features enabled.
|
|
|
|
17) All new ``/proc`` entries are documented under ``Documentation/``
|
|
|
|
18) All new kernel boot parameters are documented in
|
|
``Documentation/admin-guide/kernel-parameters.rst``.
|
|
|
|
19) All new module parameters are documented with ``MODULE_PARM_DESC()``
|
|
|
|
20) All new userspace interfaces are documented in ``Documentation/ABI/``.
|
|
See ``Documentation/ABI/README`` for more information.
|
|
Patches that change userspace interfaces should be CCed to
|
|
linux-api@vger.kernel.org.
|
|
|
|
21) Check that it all passes ``make headers_check``.
|
|
|
|
22) Has been checked with injection of at least slab and page-allocation
|
|
failures. See ``Documentation/fault-injection/``.
|
|
|
|
If the new code is substantial, addition of subsystem-specific fault
|
|
injection might be appropriate.
|
|
|
|
23) Newly-added code has been compiled with ``gcc -W`` (use
|
|
``make EXTRA_CFLAGS=-W``). This will generate lots of noise, but is good
|
|
for finding bugs like "warning: comparison between signed and unsigned".
|
|
|
|
24) Tested after it has been merged into the -mm patchset to make sure
|
|
that it still works with all of the other queued patches and various
|
|
changes in the VM, VFS, and other subsystems.
|
|
|
|
25) All memory barriers {e.g., ``barrier()``, ``rmb()``, ``wmb()``} need a
|
|
comment in the source code that explains the logic of what they are doing
|
|
and why.
|
|
|
|
26) If any ioctl's are added by the patch, then also update
|
|
``Documentation/ioctl/ioctl-number.txt``.
|
|
|
|
27) If your modified source code depends on or uses any of the kernel
|
|
APIs or features that are related to the following ``Kconfig`` symbols,
|
|
then test multiple builds with the related ``Kconfig`` symbols disabled
|
|
and/or ``=m`` (if that option is available) [not all of these at the
|
|
same time, just various/random combinations of them]:
|
|
|
|
``CONFIG_SMP``, ``CONFIG_SYSFS``, ``CONFIG_PROC_FS``, ``CONFIG_INPUT``, ``CONFIG_PCI``, ``CONFIG_BLOCK``, ``CONFIG_PM``, ``CONFIG_MAGIC_SYSRQ``,
|
|
``CONFIG_NET``, ``CONFIG_INET=n`` (but latter with ``CONFIG_NET=y``).
|