Am 17.01.25 um 08:55 schrieb Jiang Liu:
Introduce amdgpu_device_fini_schedulers() to clean scheduler related
resources, and avoid possible invalid memory access.
Signed-off-by: Jiang Liu <gerry@xxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 35 +++++++++++++++++++---
drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c | 9 ------
2 files changed, 31 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index ee695e70fb4f..dd94f87c1f7c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2821,6 +2821,26 @@ static int amdgpu_device_fw_loading(struct amdgpu_device *adev)
return r;
}
+static void __amdgpu_device_fini_schedulers(struct amdgpu_device *adev,
+ int num_rings)
+{
+ int i;
+
+ for (i = 0; i < num_rings; ++i) {
+ struct amdgpu_ring *ring = adev->rings[i];
+
+ if (!ring || ring->no_scheduler)
+ continue;
+
+ drm_sched_fini(&ring->sched);
+ }
+}
+
+static void amdgpu_device_fini_schedulers(struct amdgpu_device *adev)
+{
+ __amdgpu_device_fini_schedulers(adev, AMDGPU_MAX_RINGS);
+}
+
static int amdgpu_device_init_schedulers(struct amdgpu_device *adev)
{
long timeout;
@@ -2857,27 +2877,32 @@ static int amdgpu_device_init_schedulers(struct amdgpu_device *adev)
if (r) {
DRM_ERROR("Failed to create scheduler on ring %s.\n",
ring->name);
- return r;
+ goto out_err;
}
r = amdgpu_uvd_entity_init(adev, ring);
if (r) {
DRM_ERROR("Failed to create UVD scheduling entity on ring %s.\n",
ring->name);
- return r;
+ goto out_sched_fini;
}
r = amdgpu_vce_entity_init(adev, ring);
if (r) {
DRM_ERROR("Failed to create VCE scheduling entity on ring %s.\n",
ring->name);
- return r;
+ goto out_sched_fini;
}
}
amdgpu_xcp_update_partition_sched_list(adev);
return 0;
-}
+out_sched_fini:
+ drm_sched_fini(&adev->rings[i]->sched);
+out_err:
+ __amdgpu_device_fini_schedulers(adev, i);
I would just open code that as:
while (i--)
if (adev->rings[i] && !adev->rings[i]->no_scheduler)
drm_sched_fini(adev->rings[i]);
instead of delegating that to the __amdgpu_device_fini_schedulers()
function.
That makes code maintenance easier should anything more need to be added
to the amdgpu_device_fini_schedulers() function in the future.
Regards,
Christian.
+ return r;
+}
/**
* amdgpu_device_ip_init - run init for hardware IPs
@@ -3424,6 +3449,8 @@ static int amdgpu_device_ip_fini(struct amdgpu_device *adev)
amdgpu_amdkfd_device_fini_sw(adev);
+ amdgpu_device_fini_schedulers(adev);
+
for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
if (!adev->ip_blocks[i].status.sw)
continue;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
index 2f24a6aa13bf..c95895a7b888 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
@@ -650,15 +650,6 @@ void amdgpu_fence_driver_sw_fini(struct amdgpu_device *adev)
if (!ring || !ring->fence_drv.initialized)
continue;
- /*
- * Notice we check for sched.ops since there's some
- * override on the meaning of sched.ready by amdgpu.
- * The natural check would be sched.ready, which is
- * set as drm_sched_init() finishes...
- */
- if (ring->sched.ops)
- drm_sched_fini(&ring->sched);
-
for (j = 0; j <= ring->fence_drv.num_fences_mask; ++j)
dma_fence_put(ring->fence_drv.fences[j]);
kfree(ring->fence_drv.fences);
