Re: [PATCH 1/4] drm/amd/amdgpu: Fold TTM debugfs entries into array

[Christian König <ckoenig.leichtzumerken@xxxxxxxxx>]

Am 18.09.2017 um 14:35 schrieb Tom St Denis:
> Signed-off-by: Tom St Denis <tom.stdenis@xxxxxxx>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 53 ++++++++++++++++++---------------
>   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h |  4 +--
>   2 files changed, 31 insertions(+), 26 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> index 8ee16dfdb8af..7848ffa99eb4 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> @@ -1809,6 +1809,18 @@ static const struct file_operations amdgpu_ttm_gtt_fops = {
>   
>   #endif
>   
> +
> +
> +static const struct {
> +	char *name;
> +	const struct file_operations *fops;
> +} ttm_debugfs_entries[] = {
> +	{ "amdgpu_vram", &amdgpu_ttm_vram_fops },
> +#ifdef CONFIG_DRM_AMDGPU_GART_DEBUGFS
> +	{ "amdgpu_gtt", &amdgpu_ttm_gtt_fops },
> +#endif
> +};
> +
>   #endif
>   
>   static int amdgpu_ttm_debugfs_init(struct amdgpu_device *adev)
> @@ -1819,22 +1831,21 @@ static int amdgpu_ttm_debugfs_init(struct amdgpu_device *adev)
>   	struct drm_minor *minor = adev->ddev->primary;
>   	struct dentry *ent, *root = minor->debugfs_root;
>   
> -	ent = debugfs_create_file("amdgpu_vram", S_IFREG | S_IRUGO, root,
> -				  adev, &amdgpu_ttm_vram_fops);
> -	if (IS_ERR(ent))
> -		return PTR_ERR(ent);
> -	i_size_write(ent->d_inode, adev->mc.mc_vram_size);
> -	adev->mman.vram = ent;
> -
> -#ifdef CONFIG_DRM_AMDGPU_GART_DEBUGFS
> -	ent = debugfs_create_file("amdgpu_gtt", S_IFREG | S_IRUGO, root,
> -				  adev, &amdgpu_ttm_gtt_fops);
> -	if (IS_ERR(ent))
> -		return PTR_ERR(ent);
> -	i_size_write(ent->d_inode, adev->mc.gart_size);
> -	adev->mman.gtt = ent;
> +	for (count = 0; count < ARRAY_SIZE(ttm_debugfs_entries); count++) {
> +		ent = debugfs_create_file(
> +				ttm_debugfs_entries[count].name,
> +				S_IFREG | S_IRUGO, root,
> +				adev,
> +				ttm_debugfs_entries[count].fops);
> +		if (IS_ERR(ent))
> +			return PTR_ERR(ent);
> +		if (!strcmp(ttm_debugfs_entries[count].name, "amdgpu_vram"))
> +			i_size_write(ent->d_inode, adev->mc.mc_vram_size);
> +		else if (!strcmp(ttm_debugfs_entries[count].name, "amdgpu_gtt"))
> +			i_size_write(ent->d_inode, adev->mc.gart_size);

Uff, string compare? That is screaming break me by typo.

Maybe but the domain type into the struct as well?

Apart from that looks good to me,
Christian.

> +		adev->mman.debugfs_entries[count] = ent;
> +	}
>   
> -#endif
>   	count = ARRAY_SIZE(amdgpu_ttm_debugfs_list);
>   
>   #ifdef CONFIG_SWIOTLB
> @@ -1844,7 +1855,6 @@ static int amdgpu_ttm_debugfs_init(struct amdgpu_device *adev)
>   
>   	return amdgpu_debugfs_add_files(adev, amdgpu_ttm_debugfs_list, count);
>   #else
> -
>   	return 0;
>   #endif
>   }
> @@ -1852,14 +1862,9 @@ static int amdgpu_ttm_debugfs_init(struct amdgpu_device *adev)
>   static void amdgpu_ttm_debugfs_fini(struct amdgpu_device *adev)
>   {
>   #if defined(CONFIG_DEBUG_FS)
> +	unsigned i;
>   
> -	debugfs_remove(adev->mman.vram);
> -	adev->mman.vram = NULL;
> -
> -#ifdef CONFIG_DRM_AMDGPU_GART_DEBUGFS
> -	debugfs_remove(adev->mman.gtt);
> -	adev->mman.gtt = NULL;
> -#endif
> -
> +	for (i = 0; i < ARRAY_SIZE(ttm_debugfs_entries); i++)
> +		debugfs_remove(adev->mman.debugfs_entries[i]);
>   #endif
>   }
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
> index 64709e041d5b..7abae6867339 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
> @@ -24,6 +24,7 @@
>   #ifndef __AMDGPU_TTM_H__
>   #define __AMDGPU_TTM_H__
>   
> +#include "amdgpu.h"
>   #include "gpu_scheduler.h"
>   
>   #define AMDGPU_PL_GDS		(TTM_PL_PRIV + 0)
> @@ -45,8 +46,7 @@ struct amdgpu_mman {
>   	bool				initialized;
>   
>   #if defined(CONFIG_DEBUG_FS)
> -	struct dentry			*vram;
> -	struct dentry			*gtt;
> +	struct dentry			*debugfs_entries[8];
>   #endif
>   
>   	/* buffer handling */


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