drm/v3d: Attach per-fd reset counters to v3d_stats

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To remove the file_priv NULL-ing dance needed to check if the file
descriptor is open, move the per-fd reset counter into v3d_stats, which
is heap-allocated and refcounted, outliving the fd as long as jobs
reference it.

This change allows the removal of the last `queue_lock` usage to protect
`job->file_priv` and avoids possible NULL ptr dereference issues due to
lifetime mismatches.

Also, to simplify locking, replace both the global and per-fd locked
reset counters with atomics.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Link: https://patch.msgid.link/20260306-v3d-reset-locking-improv-v3-5-49864fe00692@igalia.com
Co-developed-by: Maíra Canal <mcanal@igalia.com>
Signed-off-by: Maíra Canal <mcanal@igalia.com>

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Tvrtko Ursulin 2026-03-06 08:30:37 -03:00 • committed by Maíra Canal

parent 745cc3f92a

commit 2f0e110735

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3 changed files with 10 additions and 35 deletions

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22

drivers/gpu/drm/v3d/v3d_drv.c

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14

drivers/gpu/drm/v3d/v3d_drv.h

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9

drivers/gpu/drm/v3d/v3d_sched.c

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