The following commit has been merged into the sched/core branch of tip: Commit-ID: 8bf0cdfac7f8aa3fa6151b5c5f5eebdb44a64e89 Gitweb: https://git.kernel.org/tip/8bf0cdfac7f8aa3fa6151b5c5f5eebdb44a64e89 Author: Ingo Molnar <mingo@xxxxxxxxxx> AuthorDate: Thu, 21 Sep 2023 11:32:58 +02:00 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitterDate: Fri, 22 Sep 2023 09:38:42 +02:00 <linux/list.h>: Introduce the list_for_each_reverse() method The list_head counterpart of list_for_each_entry_reverse() was missing, add it to complete the list handling APIs in <linux/list.h>. [ This new API is also relied on by a WIP scheduler patch, so this variant is not a theoretical possibility only. ] Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: linux-kernel@xxxxxxxxxxxxxxx --- include/linux/list.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/list.h b/include/linux/list.h index 164b4d0..1837cae 100644 --- a/include/linux/list.h +++ b/include/linux/list.h @@ -687,6 +687,14 @@ static inline void list_splice_tail_init(struct list_head *list, for (pos = (head)->next; !list_is_head(pos, (head)); pos = pos->next) /** + * list_for_each_reverse - iterate backwards over a list + * @pos: the &struct list_head to use as a loop cursor. + * @head: the head for your list. + */ +#define list_for_each_reverse(pos, head) \ + for (pos = (head)->prev; pos != (head); pos = pos->prev) + +/** * list_for_each_rcu - Iterate over a list in an RCU-safe fashion * @pos: the &struct list_head to use as a loop cursor. * @head: the head for your list.
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