linux-kernel - Re: [PATCH] drm: Remove the unused param "struct drm

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Message-ID: <ffd9508c-ba24-e9ea-ced4-4ce189ef60c5@riseup.net>
Date:   Thu, 25 Aug 2022 08:51:52 -0300
From:   Maíra Canal <mairacanal@...eup.net>
To:     Cai Huoqing <cai.huoqing@...ux.dev>
Cc:     Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...ux.ie>, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH] drm: Remove the unused param "struct drm_buddy *mm"

Hi Cai,

On 6/27/22 05:54, Cai Huoqing wrote:
> Remove the param "struct drm_buddy *mm" which is unused in
> the function drm_block_alloc()/drm_block_free().
> 
> Signed-off-by: Cai Huoqing <cai.huoqing@...ux.dev>

Reviewed-by: Maíra Canal <mairacanal@...eup.net>

Best Regards,
- Maíra Canal

> ---
>  drivers/gpu/drm/drm_buddy.c | 25 +++++++++++--------------
>  1 file changed, 11 insertions(+), 14 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_buddy.c b/drivers/gpu/drm/drm_buddy.c
> index 11bb59399471..192c8b99fb43 100644
> --- a/drivers/gpu/drm/drm_buddy.c
> +++ b/drivers/gpu/drm/drm_buddy.c
> @@ -11,10 +11,8 @@
>  
>  static struct kmem_cache *slab_blocks;
>  
> -static struct drm_buddy_block *drm_block_alloc(struct drm_buddy *mm,
> -					       struct drm_buddy_block *parent,
> -					       unsigned int order,
> -					       u64 offset)
> +static struct drm_buddy_block *
> +drm_block_alloc(struct drm_buddy_block *parent, unsigned int order, u64 offset)
>  {
>  	struct drm_buddy_block *block;
>  
> @@ -32,8 +30,7 @@ static struct drm_buddy_block *drm_block_alloc(struct drm_buddy *mm,
>  	return block;
>  }
>  
> -static void drm_block_free(struct drm_buddy *mm,
> -			   struct drm_buddy_block *block)
> +static void drm_block_free(struct drm_buddy_block *block)
>  {
>  	kmem_cache_free(slab_blocks, block);
>  }
> @@ -131,7 +128,7 @@ int drm_buddy_init(struct drm_buddy *mm, u64 size, u64 chunk_size)
>  		root_size = rounddown_pow_of_two(size);
>  		order = ilog2(root_size) - ilog2(chunk_size);
>  
> -		root = drm_block_alloc(mm, NULL, order, offset);
> +		root = drm_block_alloc(NULL, order, offset);
>  		if (!root)
>  			goto out_free_roots;
>  
> @@ -151,7 +148,7 @@ int drm_buddy_init(struct drm_buddy *mm, u64 size, u64 chunk_size)
>  
>  out_free_roots:
>  	while (i--)
> -		drm_block_free(mm, mm->roots[i]);
> +		drm_block_free(mm->roots[i]);
>  	kfree(mm->roots);
>  out_free_list:
>  	kfree(mm->free_list);
> @@ -172,7 +169,7 @@ void drm_buddy_fini(struct drm_buddy *mm)
>  
>  	for (i = 0; i < mm->n_roots; ++i) {
>  		WARN_ON(!drm_buddy_block_is_free(mm->roots[i]));
> -		drm_block_free(mm, mm->roots[i]);
> +		drm_block_free(mm->roots[i]);
>  	}
>  
>  	WARN_ON(mm->avail != mm->size);
> @@ -191,14 +188,14 @@ static int split_block(struct drm_buddy *mm,
>  	BUG_ON(!drm_buddy_block_is_free(block));
>  	BUG_ON(!drm_buddy_block_order(block));
>  
> -	block->left = drm_block_alloc(mm, block, block_order, offset);
> +	block->left = drm_block_alloc(block, block_order, offset);
>  	if (!block->left)
>  		return -ENOMEM;
>  
> -	block->right = drm_block_alloc(mm, block, block_order,
> +	block->right = drm_block_alloc(block, block_order,
>  				       offset + (mm->chunk_size << block_order));
>  	if (!block->right) {
> -		drm_block_free(mm, block->left);
> +		drm_block_free(block->left);
>  		return -ENOMEM;
>  	}
>  
> @@ -257,8 +254,8 @@ static void __drm_buddy_free(struct drm_buddy *mm,
>  
>  		list_del(&buddy->link);
>  
> -		drm_block_free(mm, block);
> -		drm_block_free(mm, buddy);
> +		drm_block_free(block);
> +		drm_block_free(buddy);
>  
>  		block = parent;
>  	}