Commit 24fd018a authored by Chris Wilson's avatar Chris Wilson

drm/i915/selftests: Increase size for mock ringbuffer

We don't actually emit any commands into the ringbuffer, so we set it
very small. However, an upcoming change centralises the wait-for-space
into i915_gem_request_alloc() and that imposes a minimum size upon all
ringbuffers (mock or real) of MIN_SPACE_FOR_ADD_REQUEST. Grow the
mock ringbuffer such that we allocate a single page for the struct+buffer,
satisfying the new condition without wasting too much space.
Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: default avatarMika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171115151204.8105-1-chris@chris-wilson.co.uk
parent 4667c2d5
......@@ -124,9 +124,11 @@ static void mock_submit_request(struct drm_i915_gem_request *request)
static struct intel_ring *mock_ring(struct intel_engine_cs *engine)
{
const unsigned long sz = roundup_pow_of_two(sizeof(struct intel_ring));
const unsigned long sz = PAGE_SIZE / 2;
struct intel_ring *ring;
BUILD_BUG_ON(MIN_SPACE_FOR_ADD_REQUEST > sz);
ring = kzalloc(sizeof(*ring) + sz, GFP_KERNEL);
if (!ring)
return NULL;
......
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