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SubjectRe: [PATCH 1/3] rbtree: Introduce rb_for_each_entry
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On Wed, 2010-01-13 at 11:01 -0200, Arnaldo Carvalho de Melo wrote:
> From: Arnaldo Carvalho de Melo <acme@redhat.com>
>
> Similar to list_for_each_entry, helps reducing boilerplate in many
> places and makes rbtrees closer to list.h macros.
>
> First conversion will be in the tools/perf.

I'm still not sure you really want to do this, it might give people the
impression its a sane thing to do ;-)

> Cc: Frédéric Weisbecker <fweisbec@gmail.com>
> Cc: Mike Galbraith <efault@gmx.de>
> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
> Cc: Paul Mackerras <paulus@samba.org>
> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
> ---
> include/linux/rbtree.h | 12 ++++++++++++
> 1 files changed, 12 insertions(+), 0 deletions(-)
>
> diff --git a/include/linux/rbtree.h b/include/linux/rbtree.h
> index 9c29541..044b150 100644
> --- a/include/linux/rbtree.h
> +++ b/include/linux/rbtree.h
> @@ -158,4 +158,16 @@ static inline void rb_link_node(struct rb_node * node, struct rb_node * parent,
> *rb_link = node;
> }
>
> +/**
> + * rb_for_each_entry - iterate over rbtree of given type
> + * @pos: the type * to hold the current entry being traversed
> + * @node: the rb_node to hold the current entry being traversed
> + * @root: the root for your tree.
> + * @member: the name of the rb_node within the struct.
> + */
> +#define rb_for_each_entry(pos, node, root, member) \
> + for (node = rb_first(root); \
> + node && (pos = rb_entry(node, typeof(*pos), member)); \
> + node = rb_next(node))
> +
> #endif /* _LINUX_RBTREE_H */


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