linux-kernel - [PATCH v2 0/2] Don't create Python bytecode when building the kernel

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Message-ID: <cover.1744786420.git.mchehab+huawei@kernel.org>
Date: Wed, 16 Apr 2025 14:57:37 +0800
From: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To: Linux Doc Mailing List <linux-doc@...r.kernel.org>,
	Jonathan Corbet <corbet@....net>
Cc: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
	linux-kernel@...r.kernel.org,
	Andy Shevchenko <andriy.shevchenko@...el.com>,
	David Airlie <airlied@...il.com>,
	Jani Nikula <jani.nikula@...ux.intel.com>,
	Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Rodrigo Vivi <rodrigo.vivi@...el.com>,
	Simona Vetter <simona@...ll.ch>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	Tvrtko Ursulin <tursulin@...ulin.net>,
	dri-devel@...ts.freedesktop.org,
	intel-gfx@...ts.freedesktop.org
Subject: [PATCH v2 0/2] Don't create Python bytecode when building the kernel

As reported by Andy, the Kernel build system runs kernel-doc script for DRM,
when W=1. Due to Python's normal behavior, its JIT compiler will create
a bytecode and store it under scripts/lib/*/__pycache__. 

As one may be using O= and even having the sources on a read-only mount
point, disable its creation during build time.

This only solves half of the issue though, as one may be manually running
the script by hand, without asking Python to not store any bytecode.
This should be OK, but afterwards, git status will list the __pycache__ as
not committed. To prevent that, add *.pyc to .gitignore.

Mauro Carvalho Chehab (2):
  scripts/kernel-doc.py: don't create *.pyc files
  .gitignore: ignore Python compiled bytecode

 .gitignore                    | 1 +
 drivers/gpu/drm/Makefile      | 2 +-
 drivers/gpu/drm/i915/Makefile | 2 +-
 include/drm/Makefile          | 2 +-
 scripts/find-unused-docs.sh   | 2 +-
 5 files changed, 5 insertions(+), 4 deletions(-)

-- 
2.49.0