drm/shmem-helper: Switch to reservation lock

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Replace all drm-shmem locks with a GEM reservation lock. This makes locks
consistent with dma-buf locking convention where importers are responsible
for holding reservation lock for all operations performed over dma-bufs,
preventing deadlock between dma-buf importers and exporters.

Suggested-by: Daniel Vetter <daniel@ffwll.ch>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230529223935.2672495-7-dmitry.osipenko@collabora.com

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This commit is contained in:

Dmitry Osipenko 2023-05-30 01:39:35 +03:00

parent 8021fa16b7

commit 21aa27ddc5

6 changed files with 116 additions and 148 deletions

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226

drivers/gpu/drm/drm_gem_shmem_helper.c

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8

drivers/gpu/drm/lima/lima_gem.c

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7

drivers/gpu/drm/panfrost/panfrost_drv.c

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6

drivers/gpu/drm/panfrost/panfrost_gem_shrinker.c

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19

drivers/gpu/drm/panfrost/panfrost_mmu.c

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14

include/drm/drm_gem_shmem_helper.h

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