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drm/ttm: Wait for a BO to become idle before unbinding it from GTT

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Fixes hangs under memory pressure, e.g. running the piglit test
tex3d-maxsize concurrently with other tests.

Fixes: 17d33bc9d6 ("drm/ttm: drop waiting for idle in ttm_bo_evict.")
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Michel Dänzer 2016-08-05 18:36:10 +09:00 committed by Alex Deucher
parent a5a5e3084e
commit 34b58355ad
6 changed files with 19 additions and 9 deletions
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4
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
View File

@ -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;
}

4
drivers/gpu/drm/nouveau/nouveau_bo.c
View File

@ -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;

4
drivers/gpu/drm/radeon/radeon_ttm.c
View File

@ -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;
}

3
drivers/gpu/drm/ttm/ttm_bo.c
View File

@ -354,7 +354,8 @@ 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);

10
drivers/gpu/drm/ttm/ttm_bo_util.c
View File

@ -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,

3
include/drm/ttm/ttm_bo_driver.h
View File

@ -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);
/**