drm/amdgpu: Add support for logging process info in amdgpu_vm.

Add process and thread names and pids and a function to extract
this info from relevant amdgpu_vm.

v2: Add documentation and fix identation.

v3: Add getter and setter functions for amdgpu_task_info.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Acked-by: Jim Qu <Jim.Qu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
index 061b99a18cb8..d416f895233d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
@@ -164,6 +164,14 @@ struct amdgpu_vm_pt {
 #define AMDGPU_VM_FAULT_PASID(fault) ((u64)(fault) >> 48)
 #define AMDGPU_VM_FAULT_ADDR(fault)  ((u64)(fault) & 0xfffffffff000ULL)
 
+
+struct amdgpu_task_info {
+        char    process_name[TASK_COMM_LEN];
+        char    task_name[TASK_COMM_LEN];
+        pid_t   pid;
+        pid_t   tgid;
+};
+
 struct amdgpu_vm {
         /* tree of virtual addresses mapped */
         struct rb_root_cached   va;
@@ -215,6 +223,9 @@ struct amdgpu_vm {
 
         /* Valid while the PD is reserved or fenced */
         uint64_t                pd_phys_addr;
+
+        /* Some basic info about the task */
+        struct amdgpu_task_info task_info;
 };
 
 struct amdgpu_vm_manager {
@@ -317,4 +328,9 @@ bool amdgpu_vm_need_pipeline_sync(struct amdgpu_ring *ring,
                                   struct amdgpu_job *job);
 void amdgpu_vm_check_compute_bug(struct amdgpu_device *adev);
 
+void amdgpu_vm_get_task_info(struct amdgpu_device *adev, unsigned int pasid,
+                         struct amdgpu_task_info *task_info);
+
+void amdgpu_vm_set_task_info(struct amdgpu_vm *vm);
+
 #endif