From: Chris Wilson Date: Wed, 1 Jan 2020 22:07:35 +0000 (+0000) Subject: drm/i915/gem: Single page objects are naturally contiguous X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=9dae9e5381e02846e523507876966fd80fbb2e97;p=openwrt%2Fstaging%2Fblogic.git drm/i915/gem: Single page objects are naturally contiguous Small objects that only occupy a single page are naturally contiguous, so mark them as such and allow them the special abilities that come with it. A more thorough treatment would extend i915_gem_object_pin_map() to support discontiguous lmem objects, following the example of ioremap_prot() and use get_vm_area() + remap_io_sg(). Signed-off-by: Chris Wilson Cc: Matthew Auld Reviewed-by: Matthew Auld Link: https://patchwork.freedesktop.org/patch/msgid/20200101220736.1073007-1-chris@chris-wilson.co.uk --- diff --git a/drivers/gpu/drm/i915/gem/i915_gem_region.c b/drivers/gpu/drm/i915/gem/i915_gem_region.c index d50adac12249..1515384d7e0e 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_region.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_region.c @@ -107,7 +107,10 @@ void i915_gem_object_init_memory_region(struct drm_i915_gem_object *obj, { INIT_LIST_HEAD(&obj->mm.blocks); obj->mm.region = intel_memory_region_get(mem); + obj->flags |= flags; + if (obj->base.size <= mem->min_page_size) + obj->flags |= I915_BO_ALLOC_CONTIGUOUS; mutex_lock(&mem->objects.lock);