linux-kernel - [PATCH 3.16.y-ckt 151/168] drm/radeon: sync all BOs involved in a CS v2

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Message-Id: <1418653622-21105-152-git-send-email-luis.henriques@canonical.com>
Date:	Mon, 15 Dec 2014 14:26:45 +0000
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Christian König <christian.koenig@....com>,
	Alex Deucher <alexander.deucher@....com>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.16.y-ckt 151/168] drm/radeon: sync all BOs involved in a CS v2

3.16.7-ckt3 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@....com>

commit 86b276385c6a986872e4cd144f5940b156053c3f upstream.

Not just the userspace relocs, otherwise we won't wait
for a swapped out page tables to be swapped in again.

v2: rebased on Alex current drm-fixes-3.18

Signed-off-by: Christian König <christian.koenig@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
[ luis: backported to 3.16: used Christian's backport to 3.17 ]
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 drivers/gpu/drm/radeon/radeon_cs.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c
index c50a1da6c12a..4aa1ede7b7b5 100644
--- a/drivers/gpu/drm/radeon/radeon_cs.c
+++ b/drivers/gpu/drm/radeon/radeon_cs.c
@@ -226,14 +226,11 @@ static int radeon_cs_get_ring(struct radeon_cs_parser *p, u32 ring, s32 priority
 
 static void radeon_cs_sync_rings(struct radeon_cs_parser *p)
 {
-	int i;
-
-	for (i = 0; i < p->nrelocs; i++) {
-		if (!p->relocs[i].robj)
-			continue;
+	struct radeon_cs_reloc *reloc;
 
+	list_for_each_entry(reloc, &p->validated, tv.head) {
 		radeon_semaphore_sync_to(p->ib.semaphore,
-					 p->relocs[i].robj->tbo.sync_obj);
+					 reloc->robj->tbo.sync_obj);
 	}
 }
 
-- 
2.1.3

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