linux-kernel - Re: [PATCH v2] drm/mm: rewrite drm_mm_for_each_hole

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Date:	Mon, 23 Nov 2015 10:05:43 +0100
From:	Daniel Vetter <daniel@...ll.ch>
To:	Geliang Tang <geliangtang@....com>
Cc:	David Airlie <airlied@...ux.ie>, lkp@...el.com,
	linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
	kbuild-all@...org
Subject: Re: [PATCH v2] drm/mm: rewrite drm_mm_for_each_hole

On Sat, Nov 21, 2015 at 10:04:04PM +0800, Geliang Tang wrote:
> When backwards is 0, __drm_mm_for_each_hole is same as
> drm_mm_for_each_hole. So I rewrite drm_mm_for_each_hole
> by using __drm_mm_for_each_hole.
> 
> Signed-off-by: Geliang Tang <geliangtang@....com>

Applied to drm-misc, thanks.
-Daniel

> ---
> Changes in v2:
>  - fix make htmldocs warning
> ---
>  include/drm/drm_mm.h | 23 +++++++++--------------
>  1 file changed, 9 insertions(+), 14 deletions(-)
> 
> diff --git a/include/drm/drm_mm.h b/include/drm/drm_mm.h
> index 0de6290..a58cc6c 100644
> --- a/include/drm/drm_mm.h
> +++ b/include/drm/drm_mm.h
> @@ -180,6 +180,14 @@ static inline u64 drm_mm_hole_node_end(struct drm_mm_node *hole_node)
>  						&(mm)->head_node.node_list, \
>  						node_list)
>  
> +#define __drm_mm_for_each_hole(entry, mm, hole_start, hole_end, backwards) \
> +	for (entry = list_entry((backwards) ? (mm)->hole_stack.prev : (mm)->hole_stack.next, struct drm_mm_node, hole_stack); \
> +	     &entry->hole_stack != &(mm)->hole_stack ? \
> +	     hole_start = drm_mm_hole_node_start(entry), \
> +	     hole_end = drm_mm_hole_node_end(entry), \
> +	     1 : 0; \
> +	     entry = list_entry((backwards) ? entry->hole_stack.prev : entry->hole_stack.next, struct drm_mm_node, hole_stack))
> +
>  /**
>   * drm_mm_for_each_hole - iterator to walk over all holes
>   * @entry: drm_mm_node used internally to track progress
> @@ -200,20 +208,7 @@ static inline u64 drm_mm_hole_node_end(struct drm_mm_node *hole_node)
>   * going backwards.
>   */
>  #define drm_mm_for_each_hole(entry, mm, hole_start, hole_end) \
> -	for (entry = list_entry((mm)->hole_stack.next, struct drm_mm_node, hole_stack); \
> -	     &entry->hole_stack != &(mm)->hole_stack ? \
> -	     hole_start = drm_mm_hole_node_start(entry), \
> -	     hole_end = drm_mm_hole_node_end(entry), \
> -	     1 : 0; \
> -	     entry = list_entry(entry->hole_stack.next, struct drm_mm_node, hole_stack))
> -
> -#define __drm_mm_for_each_hole(entry, mm, hole_start, hole_end, backwards) \
> -	for (entry = list_entry((backwards) ? (mm)->hole_stack.prev : (mm)->hole_stack.next, struct drm_mm_node, hole_stack); \
> -	     &entry->hole_stack != &(mm)->hole_stack ? \
> -	     hole_start = drm_mm_hole_node_start(entry), \
> -	     hole_end = drm_mm_hole_node_end(entry), \
> -	     1 : 0; \
> -	     entry = list_entry((backwards) ? entry->hole_stack.prev : entry->hole_stack.next, struct drm_mm_node, hole_stack))
> +	__drm_mm_for_each_hole(entry, mm, hole_start, hole_end, 0)
>  
>  /*
>   * Basic range manager support (drm_mm.c)
> -- 
> 2.5.0
> 
> 
> _______________________________________________
> dri-devel mailing list
> dri-devel@...ts.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/dri-devel

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
--
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