Commit 95db7e72 authored Nov 20, 2013 by Mitchel Humpherys

gpu: ion: system_heap: add support for 2MB allocations

Enable 2MB (order 9) allocations from the system heap. This improves the
performance of some heavyweight use cases. The benefit is especially
large for use cases where the buffer is mapped into an IOMMU since we
can leverage the 2MB IOMMU page table mappings.

Change-Id: I869733089b9ccba8090bbca80aac7b5f248b335e
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>

parent fb9f1566

drivers/gpu/ion/ion_system_heap.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -34,7 +34,7 @@ static unsigned int high_order_gfp_flags = (GFP_HIGHUSER \| __GFP_ZERO \|
		__GFP_NO_KSWAPD) & ~__GFP_WAIT;
		static unsigned int low_order_gfp_flags = (GFP_HIGHUSER \| __GFP_ZERO \|
		__GFP_NOWARN);
		static const unsigned int orders[] = {8, 4, 0};
		static const unsigned int orders[] = {9, 8, 4, 0};
		static const int num_orders = ARRAY_SIZE(orders);
		static int order_to_index(unsigned int order)
		{