Re: [PATCH 01/12] drm/ttm: add ttm_resource_fini

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On Wed, Nov 24, 2021 at 08:44:19PM +0800, Christian König wrote:
> Make sure we call the common cleanup function in all
> implementations of the resource manager.
> 
> Signed-off-by: Christian König <christian.koenig@xxxxxxx>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c     | 2 ++
>  drivers/gpu/drm/amd/amdgpu/amdgpu_preempt_mgr.c | 1 +
>  drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c    | 2 ++
>  drivers/gpu/drm/i915/i915_ttm_buddy_manager.c   | 1 +
>  drivers/gpu/drm/nouveau/nouveau_mem.c           | 3 ++-
>  drivers/gpu/drm/nouveau/nouveau_mem.h           | 3 ++-
>  drivers/gpu/drm/nouveau/nouveau_ttm.c           | 9 +++++----
>  drivers/gpu/drm/ttm/ttm_range_manager.c         | 2 ++
>  drivers/gpu/drm/ttm/ttm_resource.c              | 6 ++++++
>  drivers/gpu/drm/ttm/ttm_sys_manager.c           | 1 +
>  drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c   | 2 ++
>  drivers/gpu/drm/vmwgfx/vmwgfx_thp.c             | 3 ++-
>  include/drm/ttm/ttm_resource.h                  | 3 +++
>  13 files changed, 31 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
> index 675a72ef305d..ea5470c8c921 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
> @@ -169,6 +169,7 @@ static int amdgpu_gtt_mgr_new(struct ttm_resource_manager *man,
>  	return 0;
>  
>  err_free:
> +	ttm_resource_fini(man, &node->base.base);
>  	kfree(node);
>  
>  err_out:
> @@ -200,6 +201,7 @@ static void amdgpu_gtt_mgr_del(struct ttm_resource_manager *man,
>  	if (!(res->placement & TTM_PL_FLAG_TEMPORARY))
>  		atomic64_sub(res->num_pages, &mgr->used);
>  
> +	ttm_resource_fini(man, res);
>  	kfree(node);
>  }
>  
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_preempt_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_preempt_mgr.c
> index d02c8637f909..ffddec08e931 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_preempt_mgr.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_preempt_mgr.c
> @@ -95,6 +95,7 @@ static void amdgpu_preempt_mgr_del(struct ttm_resource_manager *man,
>  	struct amdgpu_preempt_mgr *mgr = to_preempt_mgr(man);
>  
>  	atomic64_sub(res->num_pages, &mgr->used);
> +	ttm_resource_fini(man, res);
>  	kfree(res);
>  }
>  
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
> index 7b2b0980ec41..55d68408951d 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
> @@ -476,6 +476,7 @@ static int amdgpu_vram_mgr_new(struct ttm_resource_manager *man,
>  	while (i--)
>  		drm_mm_remove_node(&node->mm_nodes[i]);
>  	spin_unlock(&mgr->lock);
> +	ttm_resource_fini(man, &node->base);
>  	kvfree(node);
>  
>  error_sub:
> @@ -515,6 +516,7 @@ static void amdgpu_vram_mgr_del(struct ttm_resource_manager *man,
>  	atomic64_sub(usage, &mgr->usage);
>  	atomic64_sub(vis_usage, &mgr->vis_usage);
>  
> +	ttm_resource_fini(man, res);
>  	kvfree(node);
>  }
>  
> diff --git a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c
> index d59fbb019032..ca3ca1f7f850 100644
> --- a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c
> +++ b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c
> @@ -123,6 +123,7 @@ static void i915_ttm_buddy_man_free(struct ttm_resource_manager *man,
>  	i915_buddy_free_list(&bman->mm, &bman_res->blocks);
>  	mutex_unlock(&bman->lock);
>  
> +	ttm_resource_fini(man, res);
>  	kfree(bman_res);
>  }
>  
> diff --git a/drivers/gpu/drm/nouveau/nouveau_mem.c b/drivers/gpu/drm/nouveau/nouveau_mem.c
> index 2ca3207c13fc..2e517cdc24c9 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_mem.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_mem.c
> @@ -162,11 +162,12 @@ nouveau_mem_vram(struct ttm_resource *reg, bool contig, u8 page)
>  }
>  
>  void
> -nouveau_mem_del(struct ttm_resource *reg)
> +nouveau_mem_del(struct ttm_resource_manager *man, struct ttm_resource *reg)
>  {
>  	struct nouveau_mem *mem = nouveau_mem(reg);
>  
>  	nouveau_mem_fini(mem);
> +	ttm_resource_fini(man, reg);
>  	kfree(mem);
>  }
>  
> diff --git a/drivers/gpu/drm/nouveau/nouveau_mem.h b/drivers/gpu/drm/nouveau/nouveau_mem.h
> index 2c01166a90f2..325551eba5cd 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_mem.h
> +++ b/drivers/gpu/drm/nouveau/nouveau_mem.h
> @@ -23,7 +23,8 @@ nouveau_mem(struct ttm_resource *reg)
>  
>  int nouveau_mem_new(struct nouveau_cli *, u8 kind, u8 comp,
>  		    struct ttm_resource **);
> -void nouveau_mem_del(struct ttm_resource *);
> +void nouveau_mem_del(struct ttm_resource_manager *man,
> +		     struct ttm_resource *);
>  int nouveau_mem_vram(struct ttm_resource *, bool contig, u8 page);
>  int nouveau_mem_host(struct ttm_resource *, struct ttm_tt *);
>  void nouveau_mem_fini(struct nouveau_mem *);
> diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c
> index 2ca9d9a9e5d5..91ef33f8f22c 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_ttm.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c
> @@ -36,9 +36,10 @@
>  #include <core/tegra.h>
>  
>  static void
> -nouveau_manager_del(struct ttm_resource_manager *man, struct ttm_resource *reg)
> +nouveau_manager_del(struct ttm_resource_manager *man,
> +		    struct ttm_resource *reg)
>  {
> -	nouveau_mem_del(reg);
> +	nouveau_mem_del(man, reg);
>  }
>  
>  static int
> @@ -62,7 +63,7 @@ nouveau_vram_manager_new(struct ttm_resource_manager *man,
>  
>  	ret = nouveau_mem_vram(*res, nvbo->contig, nvbo->page);
>  	if (ret) {
> -		nouveau_mem_del(*res);
> +		nouveau_mem_del(man, *res);
>  		return ret;
>  	}
>  
> @@ -118,7 +119,7 @@ nv04_gart_manager_new(struct ttm_resource_manager *man,
>  	ret = nvif_vmm_get(&mem->cli->vmm.vmm, PTES, false, 12, 0,
>  			   (long)(*res)->num_pages << PAGE_SHIFT, &mem->vma[0]);
>  	if (ret) {
> -		nouveau_mem_del(*res);
> +		nouveau_mem_del(man, *res);
>  		return ret;
>  	}
>  
> diff --git a/drivers/gpu/drm/ttm/ttm_range_manager.c b/drivers/gpu/drm/ttm/ttm_range_manager.c
> index 67d68a4a8640..25fcf0d63c2d 100644
> --- a/drivers/gpu/drm/ttm/ttm_range_manager.c
> +++ b/drivers/gpu/drm/ttm/ttm_range_manager.c
> @@ -89,6 +89,7 @@ static int ttm_range_man_alloc(struct ttm_resource_manager *man,
>  	spin_unlock(&rman->lock);
>  
>  	if (unlikely(ret)) {
> +		ttm_resource_fini(man, *res);
>  		kfree(node);
>  		return ret;
>  	}
> @@ -108,6 +109,7 @@ static void ttm_range_man_free(struct ttm_resource_manager *man,
>  	drm_mm_remove_node(&node->mm_nodes[0]);
>  	spin_unlock(&rman->lock);
>  
> +	ttm_resource_fini(man, res);
>  	kfree(node);
>  }
>  
> diff --git a/drivers/gpu/drm/ttm/ttm_resource.c b/drivers/gpu/drm/ttm/ttm_resource.c
> index 035d71332d18..89bcfe22a0ca 100644
> --- a/drivers/gpu/drm/ttm/ttm_resource.c
> +++ b/drivers/gpu/drm/ttm/ttm_resource.c
> @@ -44,6 +44,12 @@ void ttm_resource_init(struct ttm_buffer_object *bo,
>  }
>  EXPORT_SYMBOL(ttm_resource_init);
>  
> +void ttm_resource_fini(struct ttm_resource_manager *man,
> +		       struct ttm_resource *res)
> +{

Maybe we should clean up the res data here. E.X. memset(res, 0, sizeof(*res).
The previous data should invalid while we call fini.

Thanks,
Ray

> +}
> +EXPORT_SYMBOL(ttm_resource_fini);
> +
>  int ttm_resource_alloc(struct ttm_buffer_object *bo,
>  		       const struct ttm_place *place,
>  		       struct ttm_resource **res_ptr)
> diff --git a/drivers/gpu/drm/ttm/ttm_sys_manager.c b/drivers/gpu/drm/ttm/ttm_sys_manager.c
> index 63aca52f75e1..135394dcca95 100644
> --- a/drivers/gpu/drm/ttm/ttm_sys_manager.c
> +++ b/drivers/gpu/drm/ttm/ttm_sys_manager.c
> @@ -23,6 +23,7 @@ static int ttm_sys_man_alloc(struct ttm_resource_manager *man,
>  static void ttm_sys_man_free(struct ttm_resource_manager *man,
>  			     struct ttm_resource *res)
>  {
> +	ttm_resource_fini(man, res);
>  	kfree(res);
>  }
>  
> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c b/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c
> index b2c4af331c9d..bfd686bb8d19 100644
> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c
> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c
> @@ -116,6 +116,7 @@ static int vmw_gmrid_man_get_node(struct ttm_resource_manager *man,
>  	gman->used_gmr_pages -= (*res)->num_pages;
>  	spin_unlock(&gman->lock);
>  	ida_free(&gman->gmr_ida, id);
> +	ttm_resource_fini(man, *res);
>  	kfree(*res);
>  	return -ENOSPC;
>  }
> @@ -129,6 +130,7 @@ static void vmw_gmrid_man_put_node(struct ttm_resource_manager *man,
>  	spin_lock(&gman->lock);
>  	gman->used_gmr_pages -= res->num_pages;
>  	spin_unlock(&gman->lock);
> +	ttm_resource_fini(man, res);
>  	kfree(res);
>  }
>  
> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_thp.c b/drivers/gpu/drm/vmwgfx/vmwgfx_thp.c
> index 2a3d3468e4e0..4fcbd94ccc11 100644
> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_thp.c
> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_thp.c
> @@ -104,6 +104,7 @@ static int vmw_thp_get_node(struct ttm_resource_manager *man,
>  	spin_unlock(&rman->lock);
>  
>  	if (unlikely(ret)) {
> +		ttm_resource_fini(man, &node->base);
>  		kfree(node);
>  	} else {
>  		node->base.start = node->mm_nodes[0].start;
> @@ -122,7 +123,7 @@ static void vmw_thp_put_node(struct ttm_resource_manager *man,
>  	spin_lock(&rman->lock);
>  	drm_mm_remove_node(&node->mm_nodes[0]);
>  	spin_unlock(&rman->lock);
> -
> +	ttm_resource_fini(man, res);
>  	kfree(node);
>  }
>  
> diff --git a/include/drm/ttm/ttm_resource.h b/include/drm/ttm/ttm_resource.h
> index 5952051091cd..df1f06b7b504 100644
> --- a/include/drm/ttm/ttm_resource.h
> +++ b/include/drm/ttm/ttm_resource.h
> @@ -261,6 +261,9 @@ ttm_resource_manager_cleanup(struct ttm_resource_manager *man)
>  void ttm_resource_init(struct ttm_buffer_object *bo,
>                         const struct ttm_place *place,
>                         struct ttm_resource *res);
> +void ttm_resource_fini(struct ttm_resource_manager *man,
> +		       struct ttm_resource *res);
> +
>  int ttm_resource_alloc(struct ttm_buffer_object *bo,
>  		       const struct ttm_place *place,
>  		       struct ttm_resource **res);
> -- 
> 2.25.1
> 



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