From 61083eb504e853e18c57f9f5794f8318c267d091 Mon Sep 17 00:00:00 2001 From: Yong-Xuan Wang Date: Wed, 18 Jun 2025 10:54:16 +0800 Subject: [PATCH] lib: sbi_list: add a helper for safe list iteration Some use cases require iterating safe against removal of list entry. Signed-off-by: Yong-Xuan Wang Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20250618025416.5331-1-yongxuan.wang@sifive.com Signed-off-by: Anup Patel --- include/sbi/sbi_list.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/include/sbi/sbi_list.h b/include/sbi/sbi_list.h index 9e56c526..be69fc43 100644 --- a/include/sbi/sbi_list.h +++ b/include/sbi/sbi_list.h @@ -160,4 +160,17 @@ static inline void sbi_list_del_init(struct sbi_dlist *entry) &pos->member != (head); \ pos = sbi_list_entry(pos->member.next, typeof(*pos), member)) +/** + * Iterate over list of given type safe against removal of list entry + * @param pos the type * to use as a loop cursor. + * @param n another type * to use as temporary storage. + * @param head the head for your list. + * @param member the name of the list_struct within the struct. + */ +#define sbi_list_for_each_entry_safe(pos, n, head, member) \ + for (pos = sbi_list_entry((head)->next, typeof(*pos), member), \ + n = sbi_list_entry(pos->member.next, typeof(*pos), member); \ + &pos->member != (head); \ + pos = n, n = sbi_list_entry(pos->member.next, typeof(*pos), member)) + #endif