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Date: Wed, 2 Mar 2022 10:52:07 +0800
From: kernel test robot <lkp@...el.com>
To: Xiaomeng Tong <xiam0nd.tong@...il.com>,
torvalds@...ux-foundation.org
Cc: kbuild-all@...ts.01.org, arnd@...db.de, jakobkoschel@...il.com,
linux-kernel@...r.kernel.org, gregkh@...uxfoundation.org,
keescook@...omium.org, jannh@...gle.com,
linux-kbuild@...r.kernel.org, linux-mm@...ck.org,
netdev@...r.kernel.org, Xiaomeng Tong <xiam0nd.tong@...il.com>
Subject: Re: [PATCH 2/6] list: add new MACROs to make iterator invisiable
outside the loop
Hi Xiaomeng,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on linux/master]
[also build test WARNING on vkoul-dmaengine/next soc/for-next linus/master v5.17-rc6 next-20220301]
[cannot apply to hnaz-mm/master]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Xiaomeng-Tong/list_for_each_entry-make-iterator-invisiable-outside-the-loop/20220301-160113
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 2c271fe77d52a0555161926c232cd5bc07178b39
reproduce: make htmldocs
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
>> include/linux/list.h:931: warning: expecting prototype for list_for_each_entry_safe_reverse_insde(). Prototype was for list_for_each_entry_safe_reverse_inside() instead
vim +931 include/linux/list.h
557
558 /**
559 * list_next_entry - get the next element in list
560 * @pos: the type * to cursor
561 * @member: the name of the list_head within the struct.
562 */
563 #define list_next_entry(pos, member) \
564 list_entry((pos)->member.next, typeof(*(pos)), member)
565
566 /**
567 * list_prev_entry - get the prev element in list
568 * @pos: the type * to cursor
569 * @member: the name of the list_head within the struct.
570 */
571 #define list_prev_entry(pos, member) \
572 list_entry((pos)->member.prev, typeof(*(pos)), member)
573
574 /**
575 * list_for_each - iterate over a list
576 * @pos: the &struct list_head to use as a loop cursor.
577 * @head: the head for your list.
578 */
579 #define list_for_each(pos, head) \
580 for (pos = (head)->next; !list_is_head(pos, (head)); pos = pos->next)
581
582 /**
583 * list_for_each_continue - continue iteration over a list
584 * @pos: the &struct list_head to use as a loop cursor.
585 * @head: the head for your list.
586 *
587 * Continue to iterate over a list, continuing after the current position.
588 */
589 #define list_for_each_continue(pos, head) \
590 for (pos = pos->next; !list_is_head(pos, (head)); pos = pos->next)
591
592 /**
593 * list_for_each_prev - iterate over a list backwards
594 * @pos: the &struct list_head to use as a loop cursor.
595 * @head: the head for your list.
596 */
597 #define list_for_each_prev(pos, head) \
598 for (pos = (head)->prev; !list_is_head(pos, (head)); pos = pos->prev)
599
600 /**
601 * list_for_each_safe - iterate over a list safe against removal of list entry
602 * @pos: the &struct list_head to use as a loop cursor.
603 * @n: another &struct list_head to use as temporary storage
604 * @head: the head for your list.
605 */
606 #define list_for_each_safe(pos, n, head) \
607 for (pos = (head)->next, n = pos->next; \
608 !list_is_head(pos, (head)); \
609 pos = n, n = pos->next)
610
611 /**
612 * list_for_each_prev_safe - iterate over a list backwards safe against removal of list entry
613 * @pos: the &struct list_head to use as a loop cursor.
614 * @n: another &struct list_head to use as temporary storage
615 * @head: the head for your list.
616 */
617 #define list_for_each_prev_safe(pos, n, head) \
618 for (pos = (head)->prev, n = pos->prev; \
619 !list_is_head(pos, (head)); \
620 pos = n, n = pos->prev)
621
622 /**
623 * list_entry_is_head - test if the entry points to the head of the list
624 * @pos: the type * to cursor
625 * @head: the head for your list.
626 * @member: the name of the list_head within the struct.
627 */
628 #define list_entry_is_head(pos, head, member) \
629 (&pos->member == (head))
630
631 /**
632 * list_for_each_entry - iterate over list of given type
633 * @pos: the type * to use as a loop cursor.
634 * @head: the head for your list.
635 * @member: the name of the list_head within the struct.
636 */
637 #define list_for_each_entry(pos, head, member) \
638 for (pos = list_first_entry(head, typeof(*pos), member); \
639 !list_entry_is_head(pos, head, member); \
640 pos = list_next_entry(pos, member))
641
642 /**
643 * list_for_each_entry_inside
644 * - iterate over list of given type and keep iterator inside the loop
645 * @pos: the type * to use as a loop cursor.
646 * @type: the type of the container struct this is embedded in.
647 * @head: the head for your list.
648 * @member: the name of the list_head within the struct.
649 */
650 #define list_for_each_entry_inside(pos, type, head, member) \
651 for (type * pos = list_first_entry(head, type, member); \
652 !list_entry_is_head(pos, head, member); \
653 pos = list_next_entry(pos, member))
654
655 /**
656 * list_for_each_entry_reverse - iterate backwards over list of given type.
657 * @pos: the type * to use as a loop cursor.
658 * @head: the head for your list.
659 * @member: the name of the list_head within the struct.
660 */
661 #define list_for_each_entry_reverse(pos, head, member) \
662 for (pos = list_last_entry(head, typeof(*pos), member); \
663 !list_entry_is_head(pos, head, member); \
664 pos = list_prev_entry(pos, member))
665
666 /**
667 * list_for_each_entry_reverse_inside
668 * - iterate backwards over list of given type and keep iterator inside the loop.
669 * @pos: the type * to use as a loop cursor.
670 * @type: the type of the container struct this is embedded in.
671 * @head: the head for your list.
672 * @member: the name of the list_head within the struct.
673 */
674 #define list_for_each_entry_reverse_inside(pos, type, head, member) \
675 for (type * pos = list_last_entry(head, type, member); \
676 !list_entry_is_head(pos, head, member); \
677 pos = list_prev_entry(pos, member))
678
679 /**
680 * list_prepare_entry - prepare a pos entry for use in list_for_each_entry_continue()
681 * @pos: the type * to use as a start point
682 * @head: the head of the list
683 * @member: the name of the list_head within the struct.
684 *
685 * Prepares a pos entry for use as a start point in list_for_each_entry_continue().
686 */
687 #define list_prepare_entry(pos, head, member) \
688 ((pos) ? : list_entry(head, typeof(*pos), member))
689
690 /**
691 * list_for_each_entry_continue - continue iteration over list of given type
692 * @pos: the type * to use as a loop cursor.
693 * @head: the head for your list.
694 * @member: the name of the list_head within the struct.
695 *
696 * Continue to iterate over list of given type, continuing after
697 * the current position.
698 */
699 #define list_for_each_entry_continue(pos, head, member) \
700 for (pos = list_next_entry(pos, member); \
701 !list_entry_is_head(pos, head, member); \
702 pos = list_next_entry(pos, member))
703
704 /**
705 * list_for_each_entry_continue_inside
706 * - continue iteration over list of given type and keep iterator inside the loop
707 * @pos: the type * to use as a loop cursor.
708 * @start: the given iterator to start with.
709 * @head: the head for your list.
710 * @member: the name of the list_head within the struct.
711 *
712 * Continue to iterate over list of given type, continuing after
713 * the current position.
714 */
715 #define list_for_each_entry_continue_inside(pos, start, head, member) \
716 for (typeof(*start) *pos = list_next_entry(start, member); \
717 !list_entry_is_head(pos, head, member); \
718 pos = list_next_entry(pos, member))
719
720 /**
721 * list_for_each_entry_continue_reverse - iterate backwards from the given point
722 * @pos: the type * to use as a loop cursor.
723 * @head: the head for your list.
724 * @member: the name of the list_head within the struct.
725 *
726 * Start to iterate over list of given type backwards, continuing after
727 * the current position.
728 */
729 #define list_for_each_entry_continue_reverse(pos, head, member) \
730 for (pos = list_prev_entry(pos, member); \
731 !list_entry_is_head(pos, head, member); \
732 pos = list_prev_entry(pos, member))
733
734 /**
735 * list_for_each_entry_continue_reverse_inside
736 * - iterate backwards from the given point and keep iterator inside the loop
737 * @pos: the type * to use as a loop cursor.
738 * @start: the given iterator to start with.
739 * @head: the head for your list.
740 * @member: the name of the list_head within the struct.
741 *
742 * Start to iterate over list of given type backwards, continuing after
743 * the current position.
744 */
745 #define list_for_each_entry_continue_reverse_inside(pos, start, head, member) \
746 for (typeof(*start) *pos = list_prev_entry(start, member); \
747 !list_entry_is_head(pos, head, member); \
748 pos = list_prev_entry(pos, member))
749
750 /**
751 * list_for_each_entry_from - iterate over list of given type from the current point
752 * @pos: the type * to use as a loop cursor.
753 * @head: the head for your list.
754 * @member: the name of the list_head within the struct.
755 *
756 * Iterate over list of given type, continuing from current position.
757 */
758 #define list_for_each_entry_from(pos, head, member) \
759 for (; !list_entry_is_head(pos, head, member); \
760 pos = list_next_entry(pos, member))
761
762 /**
763 * list_for_each_entry_from_inside
764 * - iterate over list of given type from the current point and keep iterator inside the loop
765 * @pos: the type * to use as a loop cursor.
766 * @start: the given iterator to start with.
767 * @head: the head for your list.
768 * @member: the name of the list_head within the struct.
769 *
770 * Iterate over list of given type, continuing from current position.
771 */
772 #define list_for_each_entry_from_inside(pos, start, head, member) \
773 for (typeof(*start) *pos = start; !list_entry_is_head(pos, head, member); \
774 pos = list_next_entry(pos, member))
775
776 /**
777 * list_for_each_entry_from_reverse - iterate backwards over list of given type
778 * from the current point
779 * @pos: the type * to use as a loop cursor.
780 * @head: the head for your list.
781 * @member: the name of the list_head within the struct.
782 *
783 * Iterate backwards over list of given type, continuing from current position.
784 */
785 #define list_for_each_entry_from_reverse(pos, head, member) \
786 for (; !list_entry_is_head(pos, head, member); \
787 pos = list_prev_entry(pos, member))
788
789 /**
790 * list_for_each_entry_from_reverse_inside
791 * - iterate backwards over list of given type from the current point
792 * and keep iterator inside the loop
793 * @pos: the type * to use as a loop cursor.
794 * @start: the given iterator to start with.
795 * @head: the head for your list.
796 * @member: the name of the list_head within the struct.
797 *
798 * Iterate backwards over list of given type, continuing from current position.
799 */
800 #define list_for_each_entry_from_reverse_inside(pos, start, head, member) \
801 for (typeof(*start) *pos = start; !list_entry_is_head(pos, head, member); \
802 pos = list_prev_entry(pos, member))
803
804 /**
805 * list_for_each_entry_safe - iterate over list of given type safe against removal of list entry
806 * @pos: the type * to use as a loop cursor.
807 * @n: another type * to use as temporary storage
808 * @head: the head for your list.
809 * @member: the name of the list_head within the struct.
810 */
811 #define list_for_each_entry_safe(pos, n, head, member) \
812 for (pos = list_first_entry(head, typeof(*pos), member), \
813 n = list_next_entry(pos, member); \
814 !list_entry_is_head(pos, head, member); \
815 pos = n, n = list_next_entry(n, member))
816
817 /**
818 * list_for_each_entry_safe_inside
819 * - iterate over list of given type safe against removal of list entry
820 * and keep iterator inside the loop
821 * @pos: the type * to use as a loop cursor.
822 * @n: another type * to use as temporary storage
823 * @type: the type of the container struct this is embedded in.
824 * @head: the head for your list.
825 * @member: the name of the list_head within the struct.
826 */
827 #define list_for_each_entry_safe_inside(pos, n, type, head, member) \
828 for (type * pos = list_first_entry(head, type, member), \
829 *n = list_next_entry(pos, member); \
830 !list_entry_is_head(pos, head, member); \
831 pos = n, n = list_next_entry(n, member))
832
833 /**
834 * list_for_each_entry_safe_continue - continue list iteration safe against removal
835 * @pos: the type * to use as a loop cursor.
836 * @n: another type * to use as temporary storage
837 * @head: the head for your list.
838 * @member: the name of the list_head within the struct.
839 *
840 * Iterate over list of given type, continuing after current point,
841 * safe against removal of list entry.
842 */
843 #define list_for_each_entry_safe_continue(pos, n, head, member) \
844 for (pos = list_next_entry(pos, member), \
845 n = list_next_entry(pos, member); \
846 !list_entry_is_head(pos, head, member); \
847 pos = n, n = list_next_entry(n, member))
848
849 /**
850 * list_for_each_entry_safe_continue_inside
851 * - continue list iteration safe against removal and keep iterator inside the loop
852 * @pos: the type * to use as a loop cursor.
853 * @n: another type * to use as temporary storage
854 * @start: the given iterator to start with.
855 * @head: the head for your list.
856 * @member: the name of the list_head within the struct.
857 *
858 * Iterate over list of given type, continuing after current point,
859 * safe against removal of list entry.
860 */
861 #define list_for_each_entry_safe_continue_inside(pos, n, start, head, member) \
862 for (typeof(*start) *pos = list_next_entry(start, member), \
863 *n = list_next_entry(pos, member); \
864 !list_entry_is_head(pos, head, member); \
865 pos = n, n = list_next_entry(n, member))
866
867 /**
868 * list_for_each_entry_safe_from - iterate over list from current point safe against removal
869 * @pos: the type * to use as a loop cursor.
870 * @n: another type * to use as temporary storage
871 * @head: the head for your list.
872 * @member: the name of the list_head within the struct.
873 *
874 * Iterate over list of given type from current point, safe against
875 * removal of list entry.
876 */
877 #define list_for_each_entry_safe_from(pos, n, head, member) \
878 for (n = list_next_entry(pos, member); \
879 !list_entry_is_head(pos, head, member); \
880 pos = n, n = list_next_entry(n, member))
881
882 /**
883 * list_for_each_entry_safe_from_inside
884 * - iterate over list from current point safe against removal and keep iterator inside the loop
885 * @pos: the type * to use as a loop cursor.
886 * @n: another type * to use as temporary storage
887 * @start: the given iterator to start with.
888 * @head: the head for your list.
889 * @member: the name of the list_head within the struct.
890 *
891 * Iterate over list of given type from current point, safe against
892 * removal of list entry.
893 */
894 #define list_for_each_entry_safe_from_inside(pos, n, start, head, member) \
895 for (typeof(*start) *pos = start, *n = list_next_entry(pos, member); \
896 !list_entry_is_head(pos, head, member); \
897 pos = n, n = list_next_entry(n, member))
898
899 /**
900 * list_for_each_entry_safe_reverse - iterate backwards over list safe against removal
901 * @pos: the type * to use as a loop cursor.
902 * @n: another type * to use as temporary storage
903 * @head: the head for your list.
904 * @member: the name of the list_head within the struct.
905 *
906 * Iterate backwards over list of given type, safe against removal
907 * of list entry.
908 */
909 #define list_for_each_entry_safe_reverse(pos, n, head, member) \
910 for (pos = list_last_entry(head, typeof(*pos), member), \
911 n = list_prev_entry(pos, member); \
912 !list_entry_is_head(pos, head, member); \
913 pos = n, n = list_prev_entry(n, member))
914
915 /**
916 * list_for_each_entry_safe_reverse_insde
917 * - iterate backwards over list safe against removal and keep iterator inside the loop
918 * @pos: the type * to use as a loop cursor.
919 * @n: another type * to use as temporary storage
920 * @type: the type of the struct this is enmbeded in.
921 * @head: the head for your list.
922 * @member: the name of the list_head within the struct.
923 *
924 * Iterate backwards over list of given type, safe against removal
925 * of list entry.
926 */
927 #define list_for_each_entry_safe_reverse_inside(pos, n, type, head, member) \
928 for (type * pos = list_last_entry(head, type, member), \
929 *n = list_prev_entry(pos, member); \
930 !list_entry_is_head(pos, head, member); \
> 931 pos = n, n = list_prev_entry(n, member))
932
---
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