[PATCH v4 3/6] drm/amdgpu: delay the use of amdgpu_vm_set_task_info

[Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>]

At the point the VM is locked (through the root PDs dma_resv object), so
it's safer to call amdgpu_vm_set_task_info.

The original place was not protected against concurrent access, but the
risk was limited to mangled process/task name.

Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index 1e475eb01417..891128ecee6d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -309,9 +309,6 @@ static int amdgpu_cs_pass1(struct amdgpu_cs_parser *p,
 		p->gang_leader->uf_addr = uf_offset;
 	kvfree(chunk_array);
 
-	/* Use this opportunity to fill in task info for the vm */
-	amdgpu_vm_set_task_info(vm);
-
 	return 0;
 
 free_all_kdata:
@@ -1180,6 +1177,9 @@ static int amdgpu_cs_vm_handling(struct amdgpu_cs_parser *p)
 		job->vm_pd_addr = amdgpu_gmc_pd_addr(vm->root.bo);
 	}
 
+	/* Use this opportunity to fill in task info for the vm */
+	amdgpu_vm_set_task_info(vm);
+
 	if (adev->debug_vm) {
 		/* Invalidate all BOs to test for userspace bugs */
 		amdgpu_bo_list_for_each_entry(e, p->bo_list) {
-- 
2.40.1