diff options
| author | Maarten Lankhorst <maarten.lankhorst@canonical.com> | 2012-11-06 14:39:43 +0100 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2012-11-20 16:17:35 +1000 |
| commit | 654aa79259a19f0d5e3cf9cb20aff56dc3b041b7 (patch) | |
| tree | 406029f079300aac57d3463cf952b68d122619e9 /drivers/gpu/drm/ttm | |
| parent | 6c1e963cc5771c93d4ed7aa8bdd4322a7c918e9b (diff) | |
drm/ttm: alter cpu_writers to return -EBUSY in ttm_execbuf_util reservations
This is similar to other platforms that don't allow command submission
to buffers locked on the cpu.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/ttm')
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo.c | 13 | ||||
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_execbuf_util.c | 5 |
2 files changed, 2 insertions, 16 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index 5f61f133b41..7426fe59108 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -1053,16 +1053,6 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo, } EXPORT_SYMBOL(ttm_bo_mem_space); -int ttm_bo_wait_cpu(struct ttm_buffer_object *bo, bool no_wait) -{ - if ((atomic_read(&bo->cpu_writers) > 0) && no_wait) - return -EBUSY; - - return wait_event_interruptible(bo->event_queue, - atomic_read(&bo->cpu_writers) == 0); -} -EXPORT_SYMBOL(ttm_bo_wait_cpu); - int ttm_bo_move_buffer(struct ttm_buffer_object *bo, struct ttm_placement *placement, bool interruptible, bool no_wait_reserve, @@ -1788,8 +1778,7 @@ EXPORT_SYMBOL(ttm_bo_synccpu_write_grab); void ttm_bo_synccpu_write_release(struct ttm_buffer_object *bo) { - if (atomic_dec_and_test(&bo->cpu_writers)) - wake_up_all(&bo->event_queue); + atomic_dec(&bo->cpu_writers); } EXPORT_SYMBOL(ttm_bo_synccpu_write_release); diff --git a/drivers/gpu/drm/ttm/ttm_execbuf_util.c b/drivers/gpu/drm/ttm/ttm_execbuf_util.c index b227a9961a0..1986d006c26 100644 --- a/drivers/gpu/drm/ttm/ttm_execbuf_util.c +++ b/drivers/gpu/drm/ttm/ttm_execbuf_util.c @@ -185,10 +185,7 @@ retry_this_bo: ttm_eu_backoff_reservation_locked(list); spin_unlock(&glob->lru_lock); ttm_eu_list_ref_sub(list); - ret = ttm_bo_wait_cpu(bo, false); - if (ret) - return ret; - goto retry; + return -EBUSY; } } |