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-rw-r--r--common/recipes-kernel/linux/files/0247-drm-amdgpu-drop-a-dummy-wakeup-scheduler.patch50
1 files changed, 50 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/files/0247-drm-amdgpu-drop-a-dummy-wakeup-scheduler.patch b/common/recipes-kernel/linux/files/0247-drm-amdgpu-drop-a-dummy-wakeup-scheduler.patch
new file mode 100644
index 00000000..3d0a0a59
--- /dev/null
+++ b/common/recipes-kernel/linux/files/0247-drm-amdgpu-drop-a-dummy-wakeup-scheduler.patch
@@ -0,0 +1,50 @@
+From e3340ebb98eae7e066b7eea99edf8c8f9713faa8 Mon Sep 17 00:00:00 2001
+From: Monk Liu <Monk.Liu@amd.com>
+Date: Tue, 26 Jan 2016 14:59:57 +0800
+Subject: [PATCH 0247/1110] drm/amdgpu: drop a dummy wakeup scheduler
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+since the dependency job is also scheduled by the same
+scheduler with the job depended on it, no need to
+call wake up scheduler when the dep is scheduled.
+
+Signed-off-by: Monk Liu <Monk.Liu@amd.com>
+Reviewed-by: Christian König <christian.koenig@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+---
+ drivers/gpu/drm/amd/scheduler/gpu_scheduler.c | 10 +++++++++-
+ 1 file changed, 9 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c
+index 8b2becd..a5ff945 100644
+--- a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c
++++ b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c
+@@ -229,6 +229,14 @@ static void amd_sched_entity_wakeup(struct fence *f, struct fence_cb *cb)
+ amd_sched_wakeup(entity->sched);
+ }
+
++static void amd_sched_entity_clear_dep(struct fence *f, struct fence_cb *cb)
++{
++ struct amd_sched_entity *entity =
++ container_of(cb, struct amd_sched_entity, cb);
++ entity->dependency = NULL;
++ fence_put(f);
++}
++
+ static bool amd_sched_entity_add_dependency_cb(struct amd_sched_entity *entity)
+ {
+ struct amd_gpu_scheduler *sched = entity->sched;
+@@ -251,7 +259,7 @@ static bool amd_sched_entity_add_dependency_cb(struct amd_sched_entity *entity)
+ }
+
+ /* Wait for fence to be scheduled */
+- entity->cb.func = amd_sched_entity_wakeup;
++ entity->cb.func = amd_sched_entity_clear_dep;
+ list_add_tail(&entity->cb.node, &s_fence->scheduled_cb);
+ return true;
+ }
+--
+2.7.4
+