diff options
| author | Dmitry Osipenko <dmitry.osipenko@collabora.com> | 2022-03-21 03:35:41 +0300 |
|---|---|---|
| committer | Dmitry Osipenko <dmitry.osipenko@collabora.com> | 2023-02-27 07:10:56 +0300 |
| commit | 67b7836d4458790f1261e31fe0ce3250989784f0 (patch) | |
| tree | e3b6a5fa97ca607ab09dedf4ec74a235a7f96e39 /drivers/gpu/drm/panfrost/panfrost_gem_shrinker.c | |
| parent | 67fe7487fe8946f33009c7b5a7eafec535a7826b (diff) | |
| download | linux-stable-67b7836d4458790f1261e31fe0ce3250989784f0.tar.gz linux-stable-67b7836d4458790f1261e31fe0ce3250989784f0.tar.bz2 linux-stable-67b7836d4458790f1261e31fe0ce3250989784f0.zip | |
drm/shmem-helper: Switch to reservation lock
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>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://lore.kernel.org/all/20230108210445.3948344-8-dmitry.osipenko@collabora.com/
Diffstat (limited to 'drivers/gpu/drm/panfrost/panfrost_gem_shrinker.c')
| -rw-r--r-- | drivers/gpu/drm/panfrost/panfrost_gem_shrinker.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/gpu/drm/panfrost/panfrost_gem_shrinker.c b/drivers/gpu/drm/panfrost/panfrost_gem_shrinker.c index bf0170782f25..6a71a2555f85 100644 --- a/drivers/gpu/drm/panfrost/panfrost_gem_shrinker.c +++ b/drivers/gpu/drm/panfrost/panfrost_gem_shrinker.c @@ -48,14 +48,14 @@ static bool panfrost_gem_purge(struct drm_gem_object *obj) if (!mutex_trylock(&bo->mappings.lock)) return false; - if (!mutex_trylock(&shmem->pages_lock)) + if (!dma_resv_trylock(shmem->base.resv)) goto unlock_mappings; panfrost_gem_teardown_mappings_locked(bo); - drm_gem_shmem_purge_locked(&bo->base); + drm_gem_shmem_purge(&bo->base); ret = true; - mutex_unlock(&shmem->pages_lock); + dma_resv_unlock(shmem->base.resv); unlock_mappings: mutex_unlock(&bo->mappings.lock); |