Re: [Intel-gfx] [PATCH 04/66] drm: Optionally create mm blocks from top-to-bottom

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On Thu, Jun 27, 2013 at 04:30:05PM -0700, Ben Widawsky wrote:
> From: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> 
> Clients like i915 needs to segregate cache domains within the GTT which
> can lead to small amounts of fragmentation. By allocating the uncached
> buffers from the bottom and the cacheable buffers from the top, we can
> reduce the amount of wasted space and also optimize allocation of the
> mappable portion of the GTT to only those buffers that require CPU
> access through the GTT.
> 
> v2 by Ben:
> Update callers in i915_gem_object_bind_to_gtt()
> Turn search flags and allocation flags into separate enums
> Make checkpatch happy where logical/easy
> 
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Ben Widawsky <ben@xxxxxxxxxxxx>

Since this is a core drm patch it must be cc'ed to dri-devel (and acked by
Dave) before I can merge it. Can you please resend?
-Daniel

> ---
>  drivers/gpu/drm/drm_mm.c        | 122 ++++++++++++++++++---------------
>  drivers/gpu/drm/i915/i915_gem.c |   4 +-
>  include/drm/drm_mm.h            | 148 ++++++++++++++++++++++++----------------
>  3 files changed, 161 insertions(+), 113 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c
> index 07cf99c..7095328 100644
> --- a/drivers/gpu/drm/drm_mm.c
> +++ b/drivers/gpu/drm/drm_mm.c
> @@ -49,7 +49,7 @@
>  
>  #define MM_UNUSED_TARGET 4
>  
> -static struct drm_mm_node *drm_mm_kmalloc(struct drm_mm *mm, int atomic)
> +static struct drm_mm_node *drm_mm_kmalloc(struct drm_mm *mm, bool atomic)
>  {
>  	struct drm_mm_node *child;
>  
> @@ -105,7 +105,8 @@ EXPORT_SYMBOL(drm_mm_pre_get);
>  static void drm_mm_insert_helper(struct drm_mm_node *hole_node,
>  				 struct drm_mm_node *node,
>  				 unsigned long size, unsigned alignment,
> -				 unsigned long color)
> +				 unsigned long color,
> +				 enum drm_mm_allocator_flags flags)
>  {
>  	struct drm_mm *mm = hole_node->mm;
>  	unsigned long hole_start = drm_mm_hole_node_start(hole_node);
> @@ -118,12 +119,22 @@ static void drm_mm_insert_helper(struct drm_mm_node *hole_node,
>  	if (mm->color_adjust)
>  		mm->color_adjust(hole_node, color, &adj_start, &adj_end);
>  
> +	if (flags & DRM_MM_CREATE_TOP)
> +		adj_start = adj_end - size;
> +
>  	if (alignment) {
>  		unsigned tmp = adj_start % alignment;
> -		if (tmp)
> -			adj_start += alignment - tmp;
> +		if (tmp) {
> +			if (flags & DRM_MM_CREATE_TOP)
> +				adj_start -= tmp;
> +			else
> +				adj_start += alignment - tmp;
> +		}
>  	}
>  
> +	BUG_ON(adj_start < hole_start);
> +	BUG_ON(adj_end > hole_end);
> +
>  	if (adj_start == hole_start) {
>  		hole_node->hole_follows = 0;
>  		list_del(&hole_node->hole_stack);
> @@ -150,7 +161,7 @@ static void drm_mm_insert_helper(struct drm_mm_node *hole_node,
>  struct drm_mm_node *drm_mm_create_block(struct drm_mm *mm,
>  					unsigned long start,
>  					unsigned long size,
> -					bool atomic)
> +					enum drm_mm_allocator_flags flags)
>  {
>  	struct drm_mm_node *hole, *node;
>  	unsigned long end = start + size;
> @@ -161,7 +172,7 @@ struct drm_mm_node *drm_mm_create_block(struct drm_mm *mm,
>  		if (hole_start > start || hole_end < end)
>  			continue;
>  
> -		node = drm_mm_kmalloc(mm, atomic);
> +		node = drm_mm_kmalloc(mm, flags & DRM_MM_CREATE_ATOMIC);
>  		if (unlikely(node == NULL))
>  			return NULL;
>  
> @@ -196,15 +207,15 @@ struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *hole_node,
>  					     unsigned long size,
>  					     unsigned alignment,
>  					     unsigned long color,
> -					     int atomic)
> +					     enum drm_mm_allocator_flags flags)
>  {
>  	struct drm_mm_node *node;
>  
> -	node = drm_mm_kmalloc(hole_node->mm, atomic);
> +	node = drm_mm_kmalloc(hole_node->mm, flags & DRM_MM_CREATE_ATOMIC);
>  	if (unlikely(node == NULL))
>  		return NULL;
>  
> -	drm_mm_insert_helper(hole_node, node, size, alignment, color);
> +	drm_mm_insert_helper(hole_node, node, size, alignment, color, flags);
>  
>  	return node;
>  }
> @@ -217,32 +228,28 @@ EXPORT_SYMBOL(drm_mm_get_block_generic);
>   */
>  int drm_mm_insert_node_generic(struct drm_mm *mm, struct drm_mm_node *node,
>  			       unsigned long size, unsigned alignment,
> -			       unsigned long color)
> +			       unsigned long color,
> +			       enum drm_mm_allocator_flags aflags,
> +			       enum drm_mm_search_flags sflags)
>  {
>  	struct drm_mm_node *hole_node;
>  
>  	hole_node = drm_mm_search_free_generic(mm, size, alignment,
> -					       color, 0);
> +					       color, sflags);
>  	if (!hole_node)
>  		return -ENOSPC;
>  
> -	drm_mm_insert_helper(hole_node, node, size, alignment, color);
> +	drm_mm_insert_helper(hole_node, node, size, alignment, color, aflags);
>  	return 0;
>  }
>  EXPORT_SYMBOL(drm_mm_insert_node_generic);
>  
> -int drm_mm_insert_node(struct drm_mm *mm, struct drm_mm_node *node,
> -		       unsigned long size, unsigned alignment)
> -{
> -	return drm_mm_insert_node_generic(mm, node, size, alignment, 0);
> -}
> -EXPORT_SYMBOL(drm_mm_insert_node);
> -
>  static void drm_mm_insert_helper_range(struct drm_mm_node *hole_node,
>  				       struct drm_mm_node *node,
>  				       unsigned long size, unsigned alignment,
>  				       unsigned long color,
> -				       unsigned long start, unsigned long end)
> +				       unsigned long start, unsigned long end,
> +				       enum drm_mm_search_flags flags)
>  {
>  	struct drm_mm *mm = hole_node->mm;
>  	unsigned long hole_start = drm_mm_hole_node_start(hole_node);
> @@ -257,13 +264,20 @@ static void drm_mm_insert_helper_range(struct drm_mm_node *hole_node,
>  	if (adj_end > end)
>  		adj_end = end;
>  
> +	if (flags & DRM_MM_CREATE_TOP)
> +		adj_start = adj_end - size;
> +
>  	if (mm->color_adjust)
>  		mm->color_adjust(hole_node, color, &adj_start, &adj_end);
>  
>  	if (alignment) {
>  		unsigned tmp = adj_start % alignment;
> -		if (tmp)
> -			adj_start += alignment - tmp;
> +		if (tmp) {
> +			if (flags & DRM_MM_CREATE_TOP)
> +				adj_start -= tmp;
> +			else
> +				adj_start += alignment - tmp;
> +		}
>  	}
>  
>  	if (adj_start == hole_start) {
> @@ -280,6 +294,8 @@ static void drm_mm_insert_helper_range(struct drm_mm_node *hole_node,
>  	INIT_LIST_HEAD(&node->hole_stack);
>  	list_add(&node->node_list, &hole_node->node_list);
>  
> +	BUG_ON(node->start < start);
> +	BUG_ON(node->start < adj_start);
>  	BUG_ON(node->start + node->size > adj_end);
>  	BUG_ON(node->start + node->size > end);
>  
> @@ -290,22 +306,23 @@ static void drm_mm_insert_helper_range(struct drm_mm_node *hole_node,
>  	}
>  }
>  
> -struct drm_mm_node *drm_mm_get_block_range_generic(struct drm_mm_node *hole_node,
> -						unsigned long size,
> -						unsigned alignment,
> -						unsigned long color,
> -						unsigned long start,
> -						unsigned long end,
> -						int atomic)
> +struct drm_mm_node *
> +drm_mm_get_block_range_generic(struct drm_mm_node *hole_node,
> +			       unsigned long size,
> +			       unsigned alignment,
> +			       unsigned long color,
> +			       unsigned long start,
> +			       unsigned long end,
> +			       enum drm_mm_allocator_flags flags)
>  {
>  	struct drm_mm_node *node;
>  
> -	node = drm_mm_kmalloc(hole_node->mm, atomic);
> +	node = drm_mm_kmalloc(hole_node->mm, flags & DRM_MM_CREATE_ATOMIC);
>  	if (unlikely(node == NULL))
>  		return NULL;
>  
>  	drm_mm_insert_helper_range(hole_node, node, size, alignment, color,
> -				   start, end);
> +				   start, end, flags);
>  
>  	return node;
>  }
> @@ -318,31 +335,25 @@ EXPORT_SYMBOL(drm_mm_get_block_range_generic);
>   */
>  int drm_mm_insert_node_in_range_generic(struct drm_mm *mm, struct drm_mm_node *node,
>  					unsigned long size, unsigned alignment, unsigned long color,
> -					unsigned long start, unsigned long end)
> +					unsigned long start, unsigned long end,
> +					enum drm_mm_allocator_flags aflags,
> +					enum drm_mm_search_flags sflags)
>  {
>  	struct drm_mm_node *hole_node;
>  
>  	hole_node = drm_mm_search_free_in_range_generic(mm,
>  							size, alignment, color,
> -							start, end, 0);
> +							start, end, sflags);
>  	if (!hole_node)
>  		return -ENOSPC;
>  
>  	drm_mm_insert_helper_range(hole_node, node,
>  				   size, alignment, color,
> -				   start, end);
> +				   start, end, aflags);
>  	return 0;
>  }
>  EXPORT_SYMBOL(drm_mm_insert_node_in_range_generic);
>  
> -int drm_mm_insert_node_in_range(struct drm_mm *mm, struct drm_mm_node *node,
> -				unsigned long size, unsigned alignment,
> -				unsigned long start, unsigned long end)
> -{
> -	return drm_mm_insert_node_in_range_generic(mm, node, size, alignment, 0, start, end);
> -}
> -EXPORT_SYMBOL(drm_mm_insert_node_in_range);
> -
>  /**
>   * Remove a memory node from the allocator.
>   */
> @@ -418,7 +429,7 @@ struct drm_mm_node *drm_mm_search_free_generic(const struct drm_mm *mm,
>  					       unsigned long size,
>  					       unsigned alignment,
>  					       unsigned long color,
> -					       bool best_match)
> +					       enum drm_mm_search_flags flags)
>  {
>  	struct drm_mm_node *entry;
>  	struct drm_mm_node *best;
> @@ -431,7 +442,8 @@ struct drm_mm_node *drm_mm_search_free_generic(const struct drm_mm *mm,
>  	best = NULL;
>  	best_size = ~0UL;
>  
> -	drm_mm_for_each_hole(entry, mm, adj_start, adj_end) {
> +	__drm_mm_for_each_hole(entry, mm, adj_start, adj_end,
> +			       flags & DRM_MM_SEARCH_BELOW) {
>  		if (mm->color_adjust) {
>  			mm->color_adjust(entry, color, &adj_start, &adj_end);
>  			if (adj_end <= adj_start)
> @@ -441,7 +453,7 @@ struct drm_mm_node *drm_mm_search_free_generic(const struct drm_mm *mm,
>  		if (!check_free_hole(adj_start, adj_end, size, alignment))
>  			continue;
>  
> -		if (!best_match)
> +		if ((flags & DRM_MM_SEARCH_BEST) == 0)
>  			return entry;
>  
>  		if (entry->size < best_size) {
> @@ -454,13 +466,14 @@ struct drm_mm_node *drm_mm_search_free_generic(const struct drm_mm *mm,
>  }
>  EXPORT_SYMBOL(drm_mm_search_free_generic);
>  
> -struct drm_mm_node *drm_mm_search_free_in_range_generic(const struct drm_mm *mm,
> -							unsigned long size,
> -							unsigned alignment,
> -							unsigned long color,
> -							unsigned long start,
> -							unsigned long end,
> -							bool best_match)
> +struct drm_mm_node *
> +drm_mm_search_free_in_range_generic(const struct drm_mm *mm,
> +				    unsigned long size,
> +				    unsigned alignment,
> +				    unsigned long color,
> +				    unsigned long start,
> +				    unsigned long end,
> +				    enum drm_mm_search_flags flags)
>  {
>  	struct drm_mm_node *entry;
>  	struct drm_mm_node *best;
> @@ -473,7 +486,8 @@ struct drm_mm_node *drm_mm_search_free_in_range_generic(const struct drm_mm *mm,
>  	best = NULL;
>  	best_size = ~0UL;
>  
> -	drm_mm_for_each_hole(entry, mm, adj_start, adj_end) {
> +	__drm_mm_for_each_hole(entry, mm, adj_start, adj_end,
> +			       flags & DRM_MM_SEARCH_BELOW) {
>  		if (adj_start < start)
>  			adj_start = start;
>  		if (adj_end > end)
> @@ -488,7 +502,7 @@ struct drm_mm_node *drm_mm_search_free_in_range_generic(const struct drm_mm *mm,
>  		if (!check_free_hole(adj_start, adj_end, size, alignment))
>  			continue;
>  
> -		if (!best_match)
> +		if ((flags & DRM_MM_SEARCH_BEST) == 0)
>  			return entry;
>  
>  		if (entry->size < best_size) {
> diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
> index bbc3beb..6806bb9 100644
> --- a/drivers/gpu/drm/i915/i915_gem.c
> +++ b/drivers/gpu/drm/i915/i915_gem.c
> @@ -3131,7 +3131,9 @@ i915_gem_object_bind_to_gtt(struct drm_i915_gem_object *obj,
>  search_free:
>  	ret = drm_mm_insert_node_in_range_generic(&dev_priv->mm.gtt_space, node,
>  						  size, alignment,
> -						  obj->cache_level, 0, gtt_max);
> +						  obj->cache_level, 0, gtt_max,
> +						  DRM_MM_CREATE_DEFAULT,
> +						  DRM_MM_SEARCH_DEFAULT);
>  	if (ret) {
>  		ret = i915_gem_evict_something(dev, size, alignment,
>  					       obj->cache_level,
> diff --git a/include/drm/drm_mm.h b/include/drm/drm_mm.h
> index 88591ef..8935710 100644
> --- a/include/drm/drm_mm.h
> +++ b/include/drm/drm_mm.h
> @@ -41,6 +41,21 @@
>  #include <linux/seq_file.h>
>  #endif
>  
> +enum drm_mm_allocator_flags {
> +	DRM_MM_CREATE_DEFAULT = 0,
> +	DRM_MM_CREATE_ATOMIC = 1<<0,
> +	DRM_MM_CREATE_TOP = 1<<1,
> +};
> +
> +enum drm_mm_search_flags {
> +	DRM_MM_SEARCH_DEFAULT = 0,
> +	DRM_MM_SEARCH_BEST = 1<<0,
> +	DRM_MM_SEARCH_BELOW = 1<<1,
> +};
> +
> +#define DRM_MM_BOTTOMUP DRM_MM_CREATE_DEFAULT, DRM_MM_SEARCH_DEFAULT
> +#define DRM_MM_TOPDOWN DRM_MM_CREATE_TOP, DRM_MM_SEARCH_BELOW
> +
>  struct drm_mm_node {
>  	struct list_head node_list;
>  	struct list_head hole_stack;
> @@ -135,26 +150,37 @@ static inline unsigned long drm_mm_hole_node_end(struct drm_mm_node *hole_node)
>  	     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))
> +
>  /*
>   * Basic range manager support (drm_mm.c)
>   */
> -extern struct drm_mm_node *drm_mm_create_block(struct drm_mm *mm,
> -					       unsigned long start,
> -					       unsigned long size,
> -					       bool atomic);
> -extern struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *node,
> -						    unsigned long size,
> -						    unsigned alignment,
> -						    unsigned long color,
> -						    int atomic);
> -extern struct drm_mm_node *drm_mm_get_block_range_generic(
> -						struct drm_mm_node *node,
> -						unsigned long size,
> -						unsigned alignment,
> -						unsigned long color,
> -						unsigned long start,
> -						unsigned long end,
> -						int atomic);
> +extern struct drm_mm_node *
> +drm_mm_create_block(struct drm_mm *mm,
> +		    unsigned long start,
> +		    unsigned long size,
> +		    enum drm_mm_allocator_flags flags);
> +extern struct drm_mm_node *
> +drm_mm_get_block_generic(struct drm_mm_node *node,
> +			 unsigned long size,
> +			 unsigned alignment,
> +			 unsigned long color,
> +			 enum drm_mm_allocator_flags flags);
> +extern struct drm_mm_node *
> +drm_mm_get_block_range_generic(struct drm_mm_node *node,
> +			       unsigned long size,
> +			       unsigned alignment,
> +			       unsigned long color,
> +			       unsigned long start,
> +			       unsigned long end,
> +			       enum drm_mm_allocator_flags flags);
> +
>  static inline struct drm_mm_node *drm_mm_get_block(struct drm_mm_node *parent,
>  						   unsigned long size,
>  						   unsigned alignment)
> @@ -165,7 +191,8 @@ static inline struct drm_mm_node *drm_mm_get_block_atomic(struct drm_mm_node *pa
>  							  unsigned long size,
>  							  unsigned alignment)
>  {
> -	return drm_mm_get_block_generic(parent, size, alignment, 0, 1);
> +	return drm_mm_get_block_generic(parent, size, alignment, 0,
> +					DRM_MM_CREATE_ATOMIC);
>  }
>  static inline struct drm_mm_node *drm_mm_get_block_range(
>  						struct drm_mm_node *parent,
> @@ -196,39 +223,41 @@ static inline struct drm_mm_node *drm_mm_get_block_atomic_range(
>  						unsigned long end)
>  {
>  	return drm_mm_get_block_range_generic(parent, size, alignment, 0,
> -						start, end, 1);
> +						start, end,
> +						DRM_MM_CREATE_ATOMIC);
>  }
>  
> -extern int drm_mm_insert_node(struct drm_mm *mm,
> -			      struct drm_mm_node *node,
> -			      unsigned long size,
> -			      unsigned alignment);
> -extern int drm_mm_insert_node_in_range(struct drm_mm *mm,
> -				       struct drm_mm_node *node,
> -				       unsigned long size,
> -				       unsigned alignment,
> -				       unsigned long start,
> -				       unsigned long end);
>  extern int drm_mm_insert_node_generic(struct drm_mm *mm,
>  				      struct drm_mm_node *node,
>  				      unsigned long size,
>  				      unsigned alignment,
> -				      unsigned long color);
> -extern int drm_mm_insert_node_in_range_generic(struct drm_mm *mm,
> -				       struct drm_mm_node *node,
> -				       unsigned long size,
> -				       unsigned alignment,
> -				       unsigned long color,
> -				       unsigned long start,
> -				       unsigned long end);
> +				      unsigned long color,
> +				      enum drm_mm_allocator_flags aflags,
> +				      enum drm_mm_search_flags sflags);
> +#define drm_mm_insert_node(mm, node, size, alignment) \
> +	drm_mm_insert_node_generic(mm, node, size, alignment, 0, 0)
> +extern int
> +drm_mm_insert_node_in_range_generic(struct drm_mm *mm,
> +				    struct drm_mm_node *node,
> +				    unsigned long size,
> +				    unsigned alignment,
> +				    unsigned long color,
> +				    unsigned long start,
> +				    unsigned long end,
> +				    enum drm_mm_allocator_flags aflags,
> +				    enum drm_mm_search_flags sflags);
> +#define drm_mm_insert_node_in_range(mm, node, size, alignment, start, end) \
> +	drm_mm_insert_node_in_range_generic(mm, node, size, alignment, 0, start, end, 0)
>  extern void drm_mm_put_block(struct drm_mm_node *cur);
>  extern void drm_mm_remove_node(struct drm_mm_node *node);
>  extern void drm_mm_replace_node(struct drm_mm_node *old, struct drm_mm_node *new);
> -extern struct drm_mm_node *drm_mm_search_free_generic(const struct drm_mm *mm,
> -						      unsigned long size,
> -						      unsigned alignment,
> -						      unsigned long color,
> -						      bool best_match);
> +
> +extern struct drm_mm_node *
> +drm_mm_search_free_generic(const struct drm_mm *mm,
> +			   unsigned long size,
> +			   unsigned alignment,
> +			   unsigned long color,
> +			   enum drm_mm_search_flags flags);
>  extern struct drm_mm_node *drm_mm_search_free_in_range_generic(
>  						const struct drm_mm *mm,
>  						unsigned long size,
> @@ -236,13 +265,15 @@ extern struct drm_mm_node *drm_mm_search_free_in_range_generic(
>  						unsigned long color,
>  						unsigned long start,
>  						unsigned long end,
> -						bool best_match);
> -static inline struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm,
> -						     unsigned long size,
> -						     unsigned alignment,
> -						     bool best_match)
> +						enum drm_mm_search_flags flags);
> +
> +static inline struct drm_mm_node *
> +drm_mm_search_free(const struct drm_mm *mm,
> +		   unsigned long size,
> +		   unsigned alignment,
> +		   enum drm_mm_search_flags flags)
>  {
> -	return drm_mm_search_free_generic(mm,size, alignment, 0, best_match);
> +	return drm_mm_search_free_generic(mm, size, alignment, 0, flags);
>  }
>  static inline  struct drm_mm_node *drm_mm_search_free_in_range(
>  						const struct drm_mm *mm,
> @@ -250,18 +281,19 @@ static inline  struct drm_mm_node *drm_mm_search_free_in_range(
>  						unsigned alignment,
>  						unsigned long start,
>  						unsigned long end,
> -						bool best_match)
> +						enum drm_mm_search_flags flags)
>  {
>  	return drm_mm_search_free_in_range_generic(mm, size, alignment, 0,
> -						   start, end, best_match);
> +						   start, end, flags);
>  }
> -static inline struct drm_mm_node *drm_mm_search_free_color(const struct drm_mm *mm,
> -							   unsigned long size,
> -							   unsigned alignment,
> -							   unsigned long color,
> -							   bool best_match)
> +static inline struct drm_mm_node *
> +drm_mm_search_free_color(const struct drm_mm *mm,
> +			 unsigned long size,
> +			 unsigned alignment,
> +			 unsigned long color,
> +			 enum drm_mm_search_flags flags)
>  {
> -	return drm_mm_search_free_generic(mm,size, alignment, color, best_match);
> +	return drm_mm_search_free_generic(mm, size, alignment, color, flags);
>  }
>  static inline  struct drm_mm_node *drm_mm_search_free_in_range_color(
>  						const struct drm_mm *mm,
> @@ -270,10 +302,10 @@ static inline  struct drm_mm_node *drm_mm_search_free_in_range_color(
>  						unsigned long color,
>  						unsigned long start,
>  						unsigned long end,
> -						bool best_match)
> +						enum drm_mm_search_flags flags)
>  {
>  	return drm_mm_search_free_in_range_generic(mm, size, alignment, color,
> -						   start, end, best_match);
> +						   start, end, flags);
>  }
>  extern int drm_mm_init(struct drm_mm *mm,
>  		       unsigned long start,
> -- 
> 1.8.3.1
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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