drm/i915: Mark shadow batch buffers as purgeable

By adding a new exec_entry flag, we cleanly mark the shadow objects
as purgeable after they are on the active list.

v2:
- Move 'shadow_batch_obj->madv = I915_MADV_WILLNEED' inside _get
  fnc (danvet, from v4 6/7 feedback)

v3:
- Remove duplicate 'madv = I915_MADV_WILLNEED' (danvet, from v6 4/5)

Issue: VIZ-4719
Signed-off-by: Brad Volkin <bradley.d.volkin@intel.com>
Reviewed-By: Jon Bloomfield <jon.bloomfield@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/i915_gem_batch_pool.c b/drivers/gpu/drm/i915/i915_gem_batch_pool.c
index 6016125..c690170 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem_batch_pool.c
+++ b/drivers/gpu/drm/i915/i915_gem_batch_pool.c
@@ -131,5 +131,7 @@ i915_gem_batch_pool_get(struct i915_gem_batch_pool *pool,
                /* Keep list in LRU order */
                list_move_tail(&obj->batch_pool_list, &pool->cache_list);
 
+       obj->madv = I915_MADV_WILLNEED;
+
        return obj;
 }

diff --cc drivers/gpu/drm/i915/i915_gem_execbuffer.c
Simple merge