From: Marek Olšák <marek.olsak@amd.com>
Date: Sat, 1 Mar 2014 23:56:21 +0000 (+0100)
Subject: drm/radeon: validate relocations in the order determined by userspace v3
X-Git-Tag: v3.15-rc1~51^2~58^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c9b76548899cde2e729e3bca015d7e78ec5baad7;p=pandora-kernel.git

drm/radeon: validate relocations in the order determined by userspace v3

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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