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"scripts/lib" was always a bit of an awkward place for Python modules. We
already have tools/lib; create a tools/lib/python, move the libraries
there, and update the users accordingly.
While at it, move the contents of tools/docs/lib. Rather than make another
directory, just put these documentation-oriented modules under "kdoc".
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20251110220430.726665-2-corbet@lwn.net>
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Currently, calling it without an argument shows an ugly error
message. Instead, print a message using pythondoc as description.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Message-ID: <64b0339eac54ac0f2b3de3667a7f4f5becb1c6ae.1758196090.git.mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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To make it easier to be re-used, move the JobserverExec class
to the library directory.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Message-ID: <6be7b161b6c005a9807162ebfd239af6a4e6fa47.1758196090.git.mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Convert the code inside jobserver-exec to a class and
properly document it.
Using a class allows reusing the jobserver logic on other
scripts.
While the main code remains unchanged, being compatible with
Python 2.6 and 3.0+, its coding style now follows a more
modern standard, having tabs replaced by a 4-spaces
indent, passing autopep8, black and pylint.
The code allows using a pythonic way to enter/exit a python
code, e.g. it now supports:
with JobserverExec() as jobserver:
jobserver.run(sys.argv[1:])
With the new code, the __exit__() function should ensure
that the jobserver slot will be closed at the end, even if
something bad happens somewhere.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Message-ID: <4749921b75d4e0bd85a25d4d94aa2c940fad084e.1758196090.git.mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Starting with GNU make 4.4, --jobserver-auth newly uses named
pipe (fifo) instead of part of opened file descriptors:
https://www.gnu.org/software/make/manual/html_node/POSIX-Jobserver.html
Support also the new format.
Signed-off-by: Martin Liska <mliska@suse.cz>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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In the GNU Make manual, the section "Sharing Job Slots with GNU make"
says:
Be aware that the MAKEFLAGS variable may contain multiple instances
of the --jobserver-auth= option. Only the last instance is relevant.
Take the last element of the array, not the first.
Link: https://www.gnu.org/software/make/manual/html_node/Job-Slots.html
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
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Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Python retired in 2020, and some distributions do not provide the
'python' command any more.
As in commit 51839e29cb59 ("scripts: switch explicitly to Python 3"),
we need to use more specific 'python3' to invoke scripts even if they
are written in a way compatible with both Python 2 and 3.
This commit removes the variable 'PYTHON', and switches the existing
users to 'PYTHON3'.
BTW, PEP 394 (https://www.python.org/dev/peps/pep-0394/) is a helpful
material.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Rasmus correctly observed that the existing jobserver reservation only
worked if no other build targets were specified. The correct approach
is to hold the jobserver slots until sphinx has finished. To fix this,
the following changes are made:
- refactor (and rename) scripts/jobserver-exec to set an environment
variable for the maximally reserved jobserver slots and exec a
child, to release the slots on exit.
- create Documentation/scripts/parallel-wrapper.sh which examines both
$PARALLELISM and the detected "-jauto" logic from Documentation/Makefile
to decide sphinx's final -j argument.
- chain these together in Documentation/Makefile
Suggested-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Link: https://lore.kernel.org/lkml/eb25959a-9ec4-3530-2031-d9d716b40b20@rasmusvillemoes.dk
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20191121205929.40371-4-keescook@chromium.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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