Am 05.08.2016 um 11:40 schrieb Michel Dänzer:
> From: Michel Dänzer <michel.daenzer at amd.com>
>
> Fixes hangs under memory pressure, e.g. running the piglit test
> tex3d-maxsize concurrently with other tests.
>
> Fixes: 17d33bc9d6ef ("drm/ttm: drop waiting for idle in ttm_bo_evict.")
> Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>
Ah, yes of course. Good catch, patch is Reviewed-by: Christian König
<christian.koenig at amd.com>.
Regards,
Christian.
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 4 ++--
> drivers/gpu/drm/nouveau/nouveau_bo.c | 4 ++--
> drivers/gpu/drm/radeon/radeon_ttm.c | 4 ++--
> drivers/gpu/drm/ttm/ttm_bo.c | 3 ++-
> drivers/gpu/drm/ttm/ttm_bo_util.c | 10 +++++++++-
> include/drm/ttm/ttm_bo_driver.h | 3 ++-
> 6 files changed, 19 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> index b7742e6..9b61c8b 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> @@ -335,7 +335,7 @@ static int amdgpu_move_vram_ram(struct ttm_buffer_object *bo,
> if (unlikely(r)) {
> goto out_cleanup;
> }
> - r = ttm_bo_move_ttm(bo, true, no_wait_gpu, new_mem);
> + r = ttm_bo_move_ttm(bo, true, interruptible, no_wait_gpu, new_mem);
> out_cleanup:
> ttm_bo_mem_put(bo, &tmp_mem);
> return r;
> @@ -368,7 +368,7 @@ static int amdgpu_move_ram_vram(struct ttm_buffer_object *bo,
> if (unlikely(r)) {
> return r;
> }
> - r = ttm_bo_move_ttm(bo, true, no_wait_gpu, &tmp_mem);
> + r = ttm_bo_move_ttm(bo, true, interruptible, no_wait_gpu, &tmp_mem);
> if (unlikely(r)) {
> goto out_cleanup;
> }
> diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
> index 528bdef..6190035 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_bo.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
> @@ -1151,7 +1151,7 @@ nouveau_bo_move_flipd(struct ttm_buffer_object *bo, bool evict, bool intr,
> if (ret)
> goto out;
>
> - ret = ttm_bo_move_ttm(bo, true, no_wait_gpu, new_mem);
> + ret = ttm_bo_move_ttm(bo, true, intr, no_wait_gpu, new_mem);
> out:
> ttm_bo_mem_put(bo, &tmp_mem);
> return ret;
> @@ -1179,7 +1179,7 @@ nouveau_bo_move_flips(struct ttm_buffer_object *bo, bool evict, bool intr,
> if (ret)
> return ret;
>
> - ret = ttm_bo_move_ttm(bo, true, no_wait_gpu, &tmp_mem);
> + ret = ttm_bo_move_ttm(bo, true, intr, no_wait_gpu, &tmp_mem);
> if (ret)
> goto out;
>
> diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
> index 1cb7266..557ef0c 100644
> --- a/drivers/gpu/drm/radeon/radeon_ttm.c
> +++ b/drivers/gpu/drm/radeon/radeon_ttm.c
> @@ -346,7 +346,7 @@ static int radeon_move_vram_ram(struct ttm_buffer_object *bo,
> if (unlikely(r)) {
> goto out_cleanup;
> }
> - r = ttm_bo_move_ttm(bo, true, no_wait_gpu, new_mem);
> + r = ttm_bo_move_ttm(bo, true, interruptible, no_wait_gpu, new_mem);
> out_cleanup:
> ttm_bo_mem_put(bo, &tmp_mem);
> return r;
> @@ -379,7 +379,7 @@ static int radeon_move_ram_vram(struct ttm_buffer_object *bo,
> if (unlikely(r)) {
> return r;
> }
> - r = ttm_bo_move_ttm(bo, true, no_wait_gpu, &tmp_mem);
> + r = ttm_bo_move_ttm(bo, true, interruptible, no_wait_gpu, &tmp_mem);
> if (unlikely(r)) {
> goto out_cleanup;
> }
> diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
> index 3452748..f078038 100644
> --- a/drivers/gpu/drm/ttm/ttm_bo.c
> +++ b/drivers/gpu/drm/ttm/ttm_bo.c
> @@ -355,7 +355,8 @@ static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo,
>
> if (!(old_man->flags & TTM_MEMTYPE_FLAG_FIXED) &&
> !(new_man->flags & TTM_MEMTYPE_FLAG_FIXED))
> - ret = ttm_bo_move_ttm(bo, evict, no_wait_gpu, mem);
> + ret = ttm_bo_move_ttm(bo, evict, interruptible, no_wait_gpu,
> + mem);
> else if (bdev->driver->move)
> ret = bdev->driver->move(bo, evict, interruptible,
> no_wait_gpu, mem);
> diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c
> index 2df602a..f157a9e 100644
> --- a/drivers/gpu/drm/ttm/ttm_bo_util.c
> +++ b/drivers/gpu/drm/ttm/ttm_bo_util.c
> @@ -45,7 +45,7 @@ void ttm_bo_free_old_node(struct ttm_buffer_object *bo)
> }
>
> int ttm_bo_move_ttm(struct ttm_buffer_object *bo,
> - bool evict,
> + bool evict, bool interruptible,
> bool no_wait_gpu, struct ttm_mem_reg *new_mem)
> {
> struct ttm_tt *ttm = bo->ttm;
> @@ -53,6 +53,14 @@ int ttm_bo_move_ttm(struct ttm_buffer_object *bo,
> int ret;
>
> if (old_mem->mem_type != TTM_PL_SYSTEM) {
> + ret = ttm_bo_wait(bo, interruptible, no_wait_gpu);
> +
> + if (unlikely(ret != 0)) {
> + if (ret != -ERESTARTSYS)
> + pr_err("Failed to expire sync object before unbinding TTM\n");
> + return ret;
> + }
> +
> ttm_tt_unbind(ttm);
> ttm_bo_free_old_node(bo);
> ttm_flag_masked(&old_mem->placement, TTM_PL_FLAG_SYSTEM,
> diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
> index 4348d6d..99c6d01 100644
> --- a/include/drm/ttm/ttm_bo_driver.h
> +++ b/include/drm/ttm/ttm_bo_driver.h
> @@ -962,6 +962,7 @@ void ttm_mem_io_free(struct ttm_bo_device *bdev,
> *
> * @bo: A pointer to a struct ttm_buffer_object.
> * @evict: 1: This is an eviction. Don't try to pipeline.
> + * @interruptible: Sleep interruptible if waiting.
> * @no_wait_gpu: Return immediately if the GPU is busy.
> * @new_mem: struct ttm_mem_reg indicating where to move.
> *
> @@ -976,7 +977,7 @@ void ttm_mem_io_free(struct ttm_bo_device *bdev,
> */
>
> extern int ttm_bo_move_ttm(struct ttm_buffer_object *bo,
> - bool evict, bool no_wait_gpu,
> + bool evict, bool interruptible, bool no_wait_gpu,
> struct ttm_mem_reg *new_mem);
>
> /**
