KIQ is used for interaction between driver and
CP, and not exposed to outside client, as such it
doesn't need to be handled by GPU scheduler.
Signed-off-by: Monk Liu <Monk.Liu at amd.com>
Signed-off-by: Xiangliang Yu <Xiangliang.Yu at amd.com>
Signed-off-by: Trigger Huang <trigger.huang at amd.com>
Changes in v2:
- According to Alex's suggestion, wrapping the scheduler setup
conditionally instead of returning early.
- Use another simple method to check if is a KIQ ring.
---
drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c | 39 +++++++++++++++++--------------
1 file changed, 21 insertions(+), 18 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
index 77b34ec..5772ef2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
@@ -382,24 +382,27 @@ int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring,
if (!ring->fence_drv.fences)
return -ENOMEM;
- timeout = msecs_to_jiffies(amdgpu_lockup_timeout);
- if (timeout == 0) {
- /*
- * FIXME:
- * Delayed workqueue cannot use it directly,
- * so the scheduler will not use delayed workqueue if
- * MAX_SCHEDULE_TIMEOUT is set.
- * Currently keep it simple and silly.
- */
- timeout = MAX_SCHEDULE_TIMEOUT;
- }
- r = amd_sched_init(&ring->sched, &amdgpu_sched_ops,
- num_hw_submission,
- timeout, ring->name);
- if (r) {
- DRM_ERROR("Failed to create scheduler on ring %s.\n",
- ring->name);
- return r;
+ /* No need to setup the GPU scheduler for KIQ ring */
+ if (ring->funcs->type != AMDGPU_RING_TYPE_KIQ) {
+ timeout = msecs_to_jiffies(amdgpu_lockup_timeout);
+ if (timeout == 0) {
+ /*
+ * FIXME:
+ * Delayed workqueue cannot use it directly,
+ * so the scheduler will not use delayed workqueue if
+ * MAX_SCHEDULE_TIMEOUT is set.
+ * Currently keep it simple and silly.
+ */
+ timeout = MAX_SCHEDULE_TIMEOUT;
+ }
+ r = amd_sched_init(&ring->sched, &amdgpu_sched_ops,
+ num_hw_submission,
+ timeout, ring->name);
+ if (r) {
+ DRM_ERROR("Failed to create scheduler on ring %s.\n",
+ ring->name);
+ return r;
+ }
}
return 0;
--
2.7.4
