Re: [PATCH 3/3] drm/amdgpu: use drm_file name

[kernel test robot <lkp@intel.com>]

Hi Pierre-Eric,

kernel test robot noticed the following build warnings:

[auto build test WARNING on drm-exynos/exynos-drm-next]
[also build test WARNING on drm-intel/for-linux-next drm-intel/for-linux-next-fixes drm-misc/drm-misc-next drm-tip/drm-tip linus/master v6.11-rc7 next-20240912]
[cannot apply to drm/drm-next]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Pierre-Eric-Pelloux-Prayer/drm-use-drm_file-name-in-fdinfo/20240911-230058
base:   https://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git exynos-drm-next
patch link:    https://lore.kernel.org/r/20240911145836.734080-3-pierre-eric.pelloux-prayer%40amd.com
patch subject: [PATCH 3/3] drm/amdgpu: use drm_file name
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20240913/202409130526.fve4aEMs-lkp@intel.com/config)
compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240913/202409130526.fve4aEMs-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202409130526.fve4aEMs-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:2374: warning: Function parameter or struct member 'file' not described in 'amdgpu_vm_set_task_info'
   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:2801: warning: Function parameter or struct member 'ts' not described in 'amdgpu_vm_handle_fault'


vim +2374 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c

b8f67b9ddf4f8f Shashank Sharma            2024-01-18  2367  
b8f67b9ddf4f8f Shashank Sharma            2024-01-18  2368  /**
b8f67b9ddf4f8f Shashank Sharma            2024-01-18  2369   * amdgpu_vm_set_task_info - Sets VMs task info.
b8f67b9ddf4f8f Shashank Sharma            2024-01-18  2370   *
b8f67b9ddf4f8f Shashank Sharma            2024-01-18  2371   * @vm: vm for which to set the info
b8f67b9ddf4f8f Shashank Sharma            2024-01-18  2372   */
cd1125e8edc565 Pierre-Eric Pelloux-Prayer 2024-09-11  2373  void amdgpu_vm_set_task_info(struct amdgpu_vm *vm, struct drm_file *file)
b8f67b9ddf4f8f Shashank Sharma            2024-01-18 @2374  {
b8f67b9ddf4f8f Shashank Sharma            2024-01-18  2375  	if (!vm->task_info)
b8f67b9ddf4f8f Shashank Sharma            2024-01-18  2376  		return;
b8f67b9ddf4f8f Shashank Sharma            2024-01-18  2377  
b8f67b9ddf4f8f Shashank Sharma            2024-01-18  2378  	if (vm->task_info->pid == current->pid)
b8f67b9ddf4f8f Shashank Sharma            2024-01-18  2379  		return;
b8f67b9ddf4f8f Shashank Sharma            2024-01-18  2380  
b8f67b9ddf4f8f Shashank Sharma            2024-01-18  2381  	vm->task_info->pid = current->pid;
b8f67b9ddf4f8f Shashank Sharma            2024-01-18  2382  	get_task_comm(vm->task_info->task_name, current);
b8f67b9ddf4f8f Shashank Sharma            2024-01-18  2383  
b8f67b9ddf4f8f Shashank Sharma            2024-01-18  2384  	if (current->group_leader->mm != current->mm)
b8f67b9ddf4f8f Shashank Sharma            2024-01-18  2385  		return;
b8f67b9ddf4f8f Shashank Sharma            2024-01-18  2386  
b8f67b9ddf4f8f Shashank Sharma            2024-01-18  2387  	vm->task_info->tgid = current->group_leader->pid;
cd1125e8edc565 Pierre-Eric Pelloux-Prayer 2024-09-11  2388  	__get_task_comm(vm->task_info->process_name, TASK_COMM_LEN,
cd1125e8edc565 Pierre-Eric Pelloux-Prayer 2024-09-11  2389  			current->group_leader);
cd1125e8edc565 Pierre-Eric Pelloux-Prayer 2024-09-11  2390  	/* Append drm_client_name if set. */
cd1125e8edc565 Pierre-Eric Pelloux-Prayer 2024-09-11  2391  	if (file && file->name) {
cd1125e8edc565 Pierre-Eric Pelloux-Prayer 2024-09-11  2392  		int n;
cd1125e8edc565 Pierre-Eric Pelloux-Prayer 2024-09-11  2393  
cd1125e8edc565 Pierre-Eric Pelloux-Prayer 2024-09-11  2394  		mutex_lock(&file->name_lock);
cd1125e8edc565 Pierre-Eric Pelloux-Prayer 2024-09-11  2395  		n = strlen(vm->task_info->process_name);
cd1125e8edc565 Pierre-Eric Pelloux-Prayer 2024-09-11  2396  		if (n < NAME_MAX) {
cd1125e8edc565 Pierre-Eric Pelloux-Prayer 2024-09-11  2397  			if (file->name) {
cd1125e8edc565 Pierre-Eric Pelloux-Prayer 2024-09-11  2398  				vm->task_info->process_name[n] = '/';
cd1125e8edc565 Pierre-Eric Pelloux-Prayer 2024-09-11  2399  				strscpy_pad(&vm->task_info->process_name[n + 1],
cd1125e8edc565 Pierre-Eric Pelloux-Prayer 2024-09-11  2400  					    file->name, NAME_MAX - (n + 1));
cd1125e8edc565 Pierre-Eric Pelloux-Prayer 2024-09-11  2401  			}
cd1125e8edc565 Pierre-Eric Pelloux-Prayer 2024-09-11  2402  		}
cd1125e8edc565 Pierre-Eric Pelloux-Prayer 2024-09-11  2403  		mutex_unlock(&file->name_lock);
cd1125e8edc565 Pierre-Eric Pelloux-Prayer 2024-09-11  2404  	}
b8f67b9ddf4f8f Shashank Sharma            2024-01-18  2405  }
b8f67b9ddf4f8f Shashank Sharma            2024-01-18  2406  

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