drm/vc4: Use drm_malloc_ab to fix large rendering jobs.

If you exceeded the size that kmalloc would return, you'd get a dmesg
warning and a return from the job submit.  We can handle much
allocations with vmalloc, and drm_malloc_ab makes that decision.

Fixes failure in piglit's scissor-many.

Signed-off-by: Eric Anholt <eric@anholt.net>

1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/gpu/drm/vc4/vc4_gem.c b/drivers/gpu/drm/vc4/vc4_gem.c
index 62df61f9ac24..bfd1b5280ff3 100644
--- a/drivers/gpu/drm/vc4/vc4_gem.c
+++ b/drivers/gpu/drm/vc4/vc4_gem.c
@@ -534,8 +534,8 @@ vc4_cl_lookup_bos(struct drm_device *dev,
                 return -EINVAL;
         }
 
-        exec->bo = kcalloc(exec->bo_count, sizeof(struct drm_gem_cma_object *),
-                           GFP_KERNEL);
+        exec->bo = drm_calloc_large(exec->bo_count,
+                                    sizeof(struct drm_gem_cma_object *));
         if (!exec->bo) {
                 DRM_ERROR("Failed to allocate validated BO pointers\n");
                 return -ENOMEM;
@@ -608,7 +608,7 @@ vc4_get_bcl(struct drm_device *dev, struct vc4_exec_info *exec)
          * read the contents back for validation, and I think the
          * bo->vaddr is uncached access.
          */
-        temp = kmalloc(temp_size, GFP_KERNEL);
+        temp = drm_malloc_ab(temp_size, 1);
         if (!temp) {
                 DRM_ERROR("Failed to allocate storage for copying "
                           "in bin/render CLs.\n");
@@ -675,7 +675,7 @@ vc4_get_bcl(struct drm_device *dev, struct vc4_exec_info *exec)
         ret = vc4_validate_shader_recs(dev, exec);
 
 fail:
-        kfree(temp);
+        drm_free_large(temp);
         return ret;
 }
 
@@ -688,7 +688,7 @@ vc4_complete_exec(struct drm_device *dev, struct vc4_exec_info *exec)
         if (exec->bo) {
                 for (i = 0; i < exec->bo_count; i++)
                         drm_gem_object_unreference_unlocked(&exec->bo[i]->base);
-                kfree(exec->bo);
+                drm_free_large(exec->bo);
         }
 
         while (!list_empty(&exec->unref_list)) {