From c9b76548899cde2e729e3bca015d7e78ec5baad7 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Marek=20Ol=C5=A1=C3=A1k?= <marek.olsak@amd.com>
Date: Sun, 2 Mar 2014 00:56:21 +0100
Subject: [PATCH] drm/radeon: validate relocations in the order determined by
 userspace v3
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Userspace should set the first 4 bits of drm_radeon_cs_reloc::flags to
a number from 0 to 15. The higher the number, the higher the priority,
which means a buffer with a higher number will be validated sooner.

The old behavior is preserved: Buffers used for write are prioritized over
read-only buffers if the userspace doesn't set the number.

v2: add buffers to buckets directly, then concatenate them
v3: use a stable sort

Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
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