drm/msm: Acquire reservation lock in GEM pin/unpin callback

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Export msm_gem_pin_pages_locked() and acquire the reservation lock
directly in GEM pin callback. Same for unpin. Prepares for further
changes.

Dma-buf locking semantics require callers to hold the buffer's
reservation lock when invoking the pin and unpin callbacks. Prepare
msm accordingly by pushing locking out of the implementation. A
follow-up patch will fix locking for all GEM code at once.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Tested-by: Dmitry Osipenko <dmitry.osipenko@collabora.com> # virtio-gpu
Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Zack Rusin <zack.rusin@broadcom.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240227113853.8464-5-tzimmermann@suse.de

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This commit is contained in:

Thomas Zimmermann 2024-02-27 11:14:51 +01:00

parent cf91c165a9

commit 45a10ad4e6

3 changed files with 27 additions and 13 deletions

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12

drivers/gpu/drm/msm/msm_gem.c

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4

drivers/gpu/drm/msm/msm_gem.h

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24

drivers/gpu/drm/msm/msm_gem_prime.c

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