linux-kernel - [PATCH v3 0/3] drm/managed: Add drmm_release

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Date:   Mon, 11 Dec 2023 23:09:36 +0100
From:   Michał Winiarski <michal.winiarski@...el.com>
To:     <intel-xe@...ts.freedesktop.org>,
        <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>
CC:     Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Michal Wajdeczko <michal.wajdeczko@...el.com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Javier Martinez Canillas <javierm@...hat.com>,
        Maíra Canal <mcanal@...lia.com>,
        Michał Winiarski <michal.winiarski@...el.com>
Subject: [PATCH v3 0/3] drm/managed: Add drmm_release_action

Upcoming Intel Xe driver will need to have a more fine-grained control
over DRM managed actions - namely, the ability to release a given
action, triggering it manually at a different point in time than the
final drm_dev_put().
This series adds a drmm_release_action function (which is similar to
devres devm_release_action) and a simple test that uses it.

v1 -> v2:
- Split the test changes (Maxime)
- Simplify priv lifetime management (Maxime)

v2 -> v3:
- Order tests alphabetically (Maxime)
- Add comments explaining the intention behind the tests and the reason
  why DRM device can't be embedded inside test priv (Maxime)
- Bring back priv lifetime management from v1 to avoid use-after-free

Michał Winiarski (3):
  drm/managed: Add drmm_release_action
  drm/tests: managed: Extract device initialization into test init
  drm/tests: managed: Add a simple test for drmm_managed_release

 drivers/gpu/drm/drm_managed.c            | 39 ++++++++++++
 drivers/gpu/drm/tests/drm_managed_test.c | 80 +++++++++++++++++++-----
 include/drm/drm_managed.h                |  4 ++
 3 files changed, 108 insertions(+), 15 deletions(-)

-- 
2.43.0