This series aims to improve the `struct v3d_stats` lifetime management.
The commit fa6a20c87470 ("drm/v3d: Address race-condition between per-fd
GPU stats and fd release") addressed a race-condition between the per-fd
GPU stats and the fd release by clearing `job->file_priv` before the V3D
per-fd structure is freed and assuring that `job->file_priv` exists
during the per-fd GPU stats updates.
However, this approach introduced a tricky file_priv NULL-ing dance with
the `queue_lock` spinlock. This series aims to address this issue in a
simpler way: converting `v3d_stats` from embedded structs to
heap-allocated, refcounted objects. This simplifies the code and leaves
`queue_lock` exclusively for job management.
The series also switches to raw seqcount helpers to resolve a lockdep
annotation issue, fixes missing error handling in drm_sched_entity_init(),
and removes the now-unnecessary dedicated fence_lock.
Best regards,
- Maíra
---
Maíra Canal (2):
drm/v3d: Handle error from drm_sched_entity_init()
drm/v3d: Remove dedicated fence_lock
Tvrtko Ursulin (4):
drm/v3d: Use raw seqcount helpers instead of fighting with lockdep
drm/v3d: Refcount v3d_stats
drm/v3d: Hold v3d_stats references in each job
drm/v3d: Attach per-fd reset counters to v3d_stats
drivers/gpu/drm/v3d/v3d_drv.c | 53 +++++++++-------
drivers/gpu/drm/v3d/v3d_drv.h | 46 +++++++++-----
drivers/gpu/drm/v3d/v3d_fence.c | 2 +-
drivers/gpu/drm/v3d/v3d_gem.c | 43 ++++++++-----
drivers/gpu/drm/v3d/v3d_irq.c | 2 +-
drivers/gpu/drm/v3d/v3d_sched.c | 133 +++++++++++++++------------------------
drivers/gpu/drm/v3d/v3d_submit.c | 6 ++
drivers/gpu/drm/v3d/v3d_sysfs.c | 2 +-
8 files changed, 147 insertions(+), 140 deletions(-)
---
base-commit: 0ef1dcf4c16bb6d90e8fbf7b18f3d76b79fcde9d
change-id: 20260215-v3d-reset-locking-improv-ffe16c35569b
