diff options
| author | Christian König <christian.koenig@amd.com> | 2021-11-16 15:20:45 +0100 |
|---|---|---|
| committer | Christian König <christian.koenig@amd.com> | 2022-04-06 17:38:25 +0200 |
| commit | c8d4c18bfbc4ab467188dbe45cc8155759f49d9e (patch) | |
| tree | c0ecbde97d8d89bed2d7f87a93788bc86d5e56ea /drivers/gpu/drm/ttm | |
| parent | 20b734c11243ecf97030345b51ff37fcb7dd060f (diff) | |
| download | linux-c8d4c18bfbc4ab467188dbe45cc8155759f49d9e.tar.bz2 | |
dma-buf/drivers: make reserving a shared slot mandatory v4
Audit all the users of dma_resv_add_excl_fence() and make sure they
reserve a shared slot also when only trying to add an exclusive fence.
This is the next step towards handling the exclusive fence like a
shared one.
v2: fix missed case in amdgpu
v3: and two more radeon, rename function
v4: add one more case to TTM, fix i915 after rebase
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220406075132.3263-2-christian.koenig@amd.com
Diffstat (limited to 'drivers/gpu/drm/ttm')
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo.c | 8 | ||||
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo_util.c | 12 | ||||
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_execbuf_util.c | 15 |
3 files changed, 22 insertions, 13 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index e5fd0f2c0299..c49996cf25d0 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -151,6 +151,10 @@ static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo, } } + ret = dma_resv_reserve_fences(bo->base.resv, 1); + if (ret) + goto out_err; + ret = bdev->funcs->move(bo, evict, ctx, mem, hop); if (ret) { if (ret == -EMULTIHOP) @@ -735,7 +739,7 @@ static int ttm_bo_add_move_fence(struct ttm_buffer_object *bo, dma_resv_add_shared_fence(bo->base.resv, fence); - ret = dma_resv_reserve_shared(bo->base.resv, 1); + ret = dma_resv_reserve_fences(bo->base.resv, 1); if (unlikely(ret)) { dma_fence_put(fence); return ret; @@ -794,7 +798,7 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo, bool type_found = false; int i, ret; - ret = dma_resv_reserve_shared(bo->base.resv, 1); + ret = dma_resv_reserve_fences(bo->base.resv, 1); if (unlikely(ret)) return ret; diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c index 219dd81bbeab..1b96b91bf81b 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_util.c +++ b/drivers/gpu/drm/ttm/ttm_bo_util.c @@ -221,9 +221,6 @@ static int ttm_buffer_object_transfer(struct ttm_buffer_object *bo, fbo->base = *bo; - ttm_bo_get(bo); - fbo->bo = bo; - /** * Fix up members that we shouldn't copy directly: * TODO: Explicit member copy would probably be better here. @@ -250,6 +247,15 @@ static int ttm_buffer_object_transfer(struct ttm_buffer_object *bo, ret = dma_resv_trylock(&fbo->base.base._resv); WARN_ON(!ret); + ret = dma_resv_reserve_fences(&fbo->base.base._resv, 1); + if (ret) { + kfree(fbo); + return ret; + } + + ttm_bo_get(bo); + fbo->bo = bo; + ttm_bo_move_to_lru_tail_unlocked(&fbo->base); *new_obj = &fbo->base; diff --git a/drivers/gpu/drm/ttm/ttm_execbuf_util.c b/drivers/gpu/drm/ttm/ttm_execbuf_util.c index 071c48d672c6..789c645f004e 100644 --- a/drivers/gpu/drm/ttm/ttm_execbuf_util.c +++ b/drivers/gpu/drm/ttm/ttm_execbuf_util.c @@ -90,6 +90,7 @@ int ttm_eu_reserve_buffers(struct ww_acquire_ctx *ticket, list_for_each_entry(entry, list, head) { struct ttm_buffer_object *bo = entry->bo; + unsigned int num_fences; ret = ttm_bo_reserve(bo, intr, (ticket == NULL), ticket); if (ret == -EALREADY && dups) { @@ -100,12 +101,10 @@ int ttm_eu_reserve_buffers(struct ww_acquire_ctx *ticket, continue; } + num_fences = min(entry->num_shared, 1u); if (!ret) { - if (!entry->num_shared) - continue; - - ret = dma_resv_reserve_shared(bo->base.resv, - entry->num_shared); + ret = dma_resv_reserve_fences(bo->base.resv, + num_fences); if (!ret) continue; } @@ -120,9 +119,9 @@ int ttm_eu_reserve_buffers(struct ww_acquire_ctx *ticket, ret = ttm_bo_reserve_slowpath(bo, intr, ticket); } - if (!ret && entry->num_shared) - ret = dma_resv_reserve_shared(bo->base.resv, - entry->num_shared); + if (!ret) + ret = dma_resv_reserve_fences(bo->base.resv, + num_fences); if (unlikely(ret != 0)) { if (ticket) { |