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Commit 1b5243e7 authored by Mitchel Humpherys's avatar Mitchel Humpherys
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ion: system_heap: only use low gfp flags for order-0 pages 



By trying a little harder to get high-order pages (by virtue of the
liberal gfp flags used for high-order allocations) we can actually
optimize performance since high-order pages seem to help a lot. Only use
the low-order flags as a last resort, when trying to allocate an order-0
page.

Change-Id: If8d8f4b1b4503b0c7546cf5a4bcdcaecd2bb5905
Signed-off-by: default avatarMitchel Humpherys <mitchelh@codeaurora.org>
parent 162ed786

drivers/gpu/ion/ion_system_heap.c

+2 −2
Original line number Diff line number Diff line
@@ -2,7 +2,7 @@ 
 * drivers/gpu/ion/ion_system_heap.c

 *

 * Copyright (C) 2011 Google, Inc.

 * Copyright (c) 2011-2013, The Linux Foundation. All rights reserved.

 * Copyright (c) 2011-2014, The Linux Foundation. All rights reserved.

 *

 * This software is licensed under the terms of the GNU General Public

 * License version 2, as published by the Free Software Foundation, and
@@ -362,7 +362,7 @@ static int ion_system_heap_create_pools(struct ion_page_pool **pools) 
		struct ion_page_pool *pool;

		gfp_t gfp_flags = low_order_gfp_flags;



		if (orders[i] > 4)

		if (orders[i])

			gfp_flags = high_order_gfp_flags;

		pool = ion_page_pool_create(gfp_flags, orders[i]);

		if (!pool)