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0a920b5b66
We are seeing increasing levels of minor patch style violations in submissions to the mailing lists as well as making it into the tree. These detract from the quality of the submission and cause unnessary work for reviewers. As a first step package up the current state of the patch style checker and include it in the kernel tree. Add instructions suggesting running it on submissions. This adds version v0.01 of the checkpatch.pl script. Signed-off-by: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Joel Schopp <jschopp@austin.ibm.com> Cc: Randy Dunlap <rdunlap@xenotime.net> Cc: Dave Jones <davej@codemonkey.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
93 lines
3.5 KiB
Plaintext
93 lines
3.5 KiB
Plaintext
Linux Kernel patch sumbittal 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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Documentation/SubmittingPatches and elsewhere regarding submitting Linux
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kernel patches.
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1: Builds cleanly 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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2: Passes allnoconfig, allmodconfig
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3: Builds on multiple CPU architectures by using local cross-compile tools
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or something like PLM at OSDL.
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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: Matches kernel coding style(!)
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6: Any new or modified CONFIG options don't muck up the config menu.
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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 'make namespacecheck' and fix any problems
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that they find. Note: 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 kernel-doc to document global kernel APIs. (Not required for
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static functions, but OK there also.) Use 'make htmldocs' or 'make
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mandocs' to check the 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_SPINLOCK_SLEEP all simultaneously
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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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14: If the patch affects IO/Disk, etc: has been tested with and without
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CONFIG_LBD.
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15: All codepaths have been exercised with all lockdep features enabled.
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16: All new /proc entries are documented under Documentation/
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17: All new kernel boot parameters are documented in
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Documentation/kernel-parameters.txt.
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18: All new module parameters are documented with MODULE_PARM_DESC()
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19: All new userspace interfaces are documented in Documentation/ABI/.
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See Documentation/ABI/README for more information.
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20: Check that it all passes `make headers_check'.
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21: Has been checked with injection of at least slab and page-allocation
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fauilures. 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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22: Newly-added code has been compiled with `gcc -W' (use "make
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EXTRA_CFLAGS=-W"). This will generate lots of noise, but is good for
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finding bugs like "warning: comparison between signed and unsigned".
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23: 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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24: Avoid whitespace damage such as indenting with spaces or whitespace
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at the end of lines. You can test this by feeding the patch to
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"git apply --check --whitespace=error-all"
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25: Check your patch for general style as detailed in
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Documentation/CodingStyle. Check for trivial violations with the
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patch style checker prior to 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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