Message ID | 1475464365-18437-5-git-send-email-sjg@chromium.org |
---|---|
State | Accepted |
Commit | 5023bd7a804e09d0bf4937d8fecb5d85af6dba3c |
Delegated to: | Bin Meng |
Headers | show |
On Mon, Oct 3, 2016 at 11:12 AM, Simon Glass <sjg@chromium.org> wrote: > We have list_first_entry() but in some cases it is useful to find the last > item added to the list. Add a macro for this. > > Signed-off-by: Simon Glass <sjg@chromium.org> > --- > > include/linux/list.h | 11 +++++++++++ > 1 file changed, 11 insertions(+) > Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/include/linux/list.h b/include/linux/list.h index b78851c..5b8d1df 100644 --- a/include/linux/list.h +++ b/include/linux/list.h @@ -338,6 +338,17 @@ static inline void list_splice_tail_init(struct list_head *list, list_entry((ptr)->next, type, member) /** + * list_last_entry - get the last element from a list + * @ptr: the list head to take the element from. + * @type: the type of the struct this is embedded in. + * @member: the name of the list_struct within the struct. + * + * Note, that list is expected to be not empty. + */ +#define list_last_entry(ptr, type, member) \ + list_entry((ptr)->prev, type, member) + +/** * list_for_each - iterate over a list * @pos: the &struct list_head to use as a loop cursor. * @head: the head for your list.
We have list_first_entry() but in some cases it is useful to find the last item added to the list. Add a macro for this. Signed-off-by: Simon Glass <sjg@chromium.org> --- include/linux/list.h | 11 +++++++++++ 1 file changed, 11 insertions(+)