kernel/linux.git/drivers/gpu/drm/msm/msm_ringbuffer.c, branch v7.2-rc1

Merge v7.1-rc5 into drm-next

2026-05-28T07:58:36+00:00

Boris Brezillion needs the gem lru fixes 379e8f1ca5e9 ("drm/gem: Make the GEM LRU lock part of drm_device") backmerged for drm-misc-next. That also means we need to sort out the rename conflict in panthor with the fixup patch from Boris from drm-tip. Signed-off-by: Simona Vetter

drm/gem: Make the GEM LRU lock part of drm_device

2026-05-18T13:16:47+00:00

Recently, a few races have been discovered in the GEM LRU logic, all of them caused by the fact the LRU lock is accessed through gem->lru->lock, and that very same lock also protects changes to gem->lru, leading to situations where gem->lru needs to first be accessed without the lock held, to then get the lru to access the lock through and finally take the lock and do the expected operation. Currently, the only driver making use of this API (MSM) declares a device-wide lock, and the user we're about to add (panthor) will do the same. There's no evidence that we will ever have a driver that wants different pools of LRUs protected by different locks under the same drm_device. So we're better off moving this lock to drm_device and always locking it through obj->dev->gem_lru_mutex, or directly through dev->gem_lru_mutex. If anyone ever needs more fine-grained locking, this can be revisited to pass some drm_gem_lru_pool object representing the pool of LRUs under a specific lock, but for now, the per-device lock seems to be enough. Fixes: e7c2af13f811 ("drm/gem: Add LRU/shrinker helper") Reported-by: Chia-I Wu Closes: https://gitlab.freedesktop.org/panfrost/linux/-/work_items/86 Reviewed-by: Rob Clark Reviewed-by: Liviu Dudau Reviewed-by: Steven Price Reviewed-by: Chia-I Wu Link: https://patch.msgid.link/20260518-panthor-shrinker-fixes-v4-1-1920234470d5@collabora.com Signed-off-by: Boris Brezillon

drm/msm: Remove drm_sched_init_args->num_rqs usage

2026-04-17T12:43:29+00:00

Remove member no longer used by the scheduler core. Signed-off-by: Tvrtko Ursulin Cc: Rob Clark Cc: linux-arm-msm@vger.kernel.org Cc: freedreno@lists.freedesktop.org Signed-off-by: Philipp Stanner Link: https://patch.msgid.link/20260417103744.76020-23-tvrtko.ursulin@igalia.com

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

drm/msm: Drop queued submits on lastclose()

2025-07-05T00:48:36+00:00

If we haven't written the submit into the ringbuffer yet, then drop it. The submit still retires through the normal path, to preserve fence signalling order, but we can skip the IB's to userspace cmdstream. Signed-off-by: Rob Clark Signed-off-by: Rob Clark Tested-by: Antonino Maniscalco Reviewed-by: Antonino Maniscalco Patchwork: https://patchwork.freedesktop.org/patch/661489/

drm/msm: Rename msm_gem_address_space -> msm_gem_vm

2025-07-04T18:09:44+00:00

Re-aligning naming to better match drm_gpuvm terminology will make things less confusing at the end of the drm_gpuvm conversion. This is just rename churn, no functional change. Signed-off-by: Rob Clark Reviewed-by: Dmitry Baryshkov Signed-off-by: Rob Clark Tested-by: Antonino Maniscalco Reviewed-by: Antonino Maniscalco Patchwork: https://patchwork.freedesktop.org/patch/661466/

drm/msm: Convert comma to semicolon

2025-05-01T20:39:53+00:00

Replace comma between expressions with semicolons. Using a ',' in place of a ';' can have unintended side effects. Although that is not the case here, it is seems best to use ';' unless ',' is intended. Found by inspection. No functional change intended. Compile tested only. Signed-off-by: Chen Ni Reviewed-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/647875/ Link: https://lore.kernel.org/r/20250410025221.3358387-1-nichen@iscas.ac.cn Signed-off-by: Dmitry Baryshkov

drm/sched: Use struct for drm_sched_init() params

2025-02-12T10:59:52+00:00

drm_sched_init() has a great many parameters and upcoming new functionality for the scheduler might add even more. Generally, the great number of parameters reduces readability and has already caused one missnaming, addressed in: commit 6f1cacf4eba7 ("drm/nouveau: Improve variable name in nouveau_sched_init()"). Introduce a new struct for the scheduler init parameters and port all users. Reviewed-by: Liviu Dudau Acked-by: Matthew Brost # for Xe Reviewed-by: Boris Brezillon # for Panfrost and Panthor Reviewed-by: Christian Gmeiner # for Etnaviv Reviewed-by: Frank Binns # for Imagination Reviewed-by: Tvrtko Ursulin # for Sched Reviewed-by: Maíra Canal # for v3d Reviewed-by: Danilo Krummrich Reviewed-by: Lizhi Hou # for amdxdna Signed-off-by: Philipp Stanner Link: https://patchwork.freedesktop.org/patch/msgid/20250211111422.21235-2-phasta@kernel.org

drm/msm: Fix some typos in comment

2024-10-27T15:21:50+00:00

Fixed some spelling errors, the details are as follows: -in the code comments: collpase->collapse firwmare->firmware everwhere->everywhere Fixes: 2401a0084614 ("drm/msm: gpu: Add support for the GPMU") Fixes: 5a903a44a984 ("drm/msm/a6xx: Introduce GMU wrapper support") Fixes: f97decac5f4c ("drm/msm: Support multiple ringbuffers") Signed-off-by: Shen Lichuan Reviewed-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/614109/ Signed-off-by: Rob Clark