git.kernel.dk Git - linux-block.git/commit

drm/shmem-helper: Use refcount_t for pages_use_count

Use atomic refcount_t helper for pages_use_count to optimize pin/unpin
functions by skipping reservation locking while GEM's pin refcount > 1.

Acked-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Suggested-by: Boris Brezillon <boris.brezillon@collabora.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.d>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250322212608.40511-9-dmitry.osipenko@collabora.com

author	Dmitry Osipenko <dmitry.osipenko@collabora.com>
	Sat, 22 Mar 2025 21:26:06 +0000 (00:26 +0300)
committer	Dmitry Osipenko <dmitry.osipenko@collabora.com>
	Wed, 26 Mar 2025 20:00:19 +0000 (23:00 +0300)
commit	051b6646d36dc974c3884d75021bf282925b171c
tree	e0fc362f39f22019e05d3cef30d091097776e818	tree
parent	d586b535f1448a6969e2b664e4e061c40bec4679	commit \| diff

drivers/gpu/drm/drm_gem_shmem_helper.c		diff \| blob \| blame \| history
drivers/gpu/drm/lima/lima_gem.c		diff \| blob \| blame \| history
drivers/gpu/drm/panfrost/panfrost_mmu.c		diff \| blob \| blame \| history
drivers/gpu/drm/tests/drm_gem_shmem_test.c		diff \| blob \| blame \| history
include/drm/drm_gem_shmem_helper.h		diff \| blob \| blame \| history