drm/i915: add batch bo to i915_add_request()
In order to track down a batch buffer and context which
caused the ring to hang, store reference to bo into the request struct.
Request can also cause gpu to hang after the batch in the flush section
in the ring. To detect this add start of the flush portion offset into the
request.
v2: Included comment about request vs batch_obj lifetimes (Chris Wilson)
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index d79ac7a..87a3227 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -796,13 +796,14 @@
static void
i915_gem_execbuffer_retire_commands(struct drm_device *dev,
struct drm_file *file,
- struct intel_ring_buffer *ring)
+ struct intel_ring_buffer *ring,
+ struct drm_i915_gem_object *obj)
{
/* Unconditionally force add_request to emit a full flush. */
ring->gpu_caches_dirty = true;
/* Add a breadcrumb for the completion of the batch buffer */
- (void)__i915_add_request(ring, file, NULL);
+ (void)__i915_add_request(ring, file, obj, NULL);
}
static int
@@ -1083,7 +1084,7 @@
trace_i915_gem_ring_dispatch(ring, intel_ring_get_seqno(ring), flags);
i915_gem_execbuffer_move_to_active(&eb->objects, ring);
- i915_gem_execbuffer_retire_commands(dev, file, ring);
+ i915_gem_execbuffer_retire_commands(dev, file, ring, batch_obj);
err:
eb_destroy(eb);