diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_request.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_request.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c index 2cd1f51963f3..c8603a26606e 100644 --- a/drivers/gpu/drm/i915/i915_request.c +++ b/drivers/gpu/drm/i915/i915_request.c @@ -521,10 +521,6 @@ i915_request_alloc(struct intel_engine_cs *engine, struct i915_gem_context *ctx) reserve_gt(i915); - ret = intel_ring_wait_for_space(ce->ring, MIN_SPACE_FOR_ADD_REQUEST); - if (ret) - goto err_unreserve; - /* Move our oldest request to the slab-cache (if not in use!) */ rq = list_first_entry(&ce->ring->request_list, typeof(*rq), ring_link); if (!list_is_last(&rq->ring_link, &ce->ring->request_list) && @@ -616,9 +612,13 @@ i915_request_alloc(struct intel_engine_cs *engine, struct i915_gem_context *ctx) * i915_request_add() call can't fail. Note that the reserve may need * to be redone if the request is not actually submitted straight * away, e.g. because a GPU scheduler has deferred it. + * + * Note that due to how we add reserved_space to intel_ring_begin() + * we need to double our request to ensure that if we need to wrap + * around inside i915_request_add() there is sufficient space at + * the beginning of the ring as well. */ - rq->reserved_space = MIN_SPACE_FOR_ADD_REQUEST; - GEM_BUG_ON(rq->reserved_space < engine->emit_breadcrumb_sz); + rq->reserved_space = 2 * engine->emit_breadcrumb_sz * sizeof(u32); /* * Record the position of the start of the request so that @@ -860,8 +860,8 @@ void i915_request_add(struct i915_request *request) * should already have been reserved in the ring buffer. Let the ring * know that it is time to use that space up. */ + GEM_BUG_ON(request->reserved_space > request->ring->space); request->reserved_space = 0; - engine->emit_flush(request, EMIT_FLUSH); /* * Record the position of the start of the breadcrumb so that |