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lib: sbi_list: add a helper for safe list iteration

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Some use cases require iterating safe against removal of list entry.

Signed-off-by: Yong-Xuan Wang <yongxuan.wang@sifive.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20250618025416.5331-1-yongxuan.wang@sifive.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Yong-Xuan Wang
2025-06-18 10:54:16 +08:00
committed by Anup Patel
parent b8f370aa37
commit 61083eb504
1 changed files with 13 additions and 0 deletions
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13
include/sbi/sbi_list.h
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@@ -160,4 +160,17 @@ static inline void sbi_list_del_init(struct sbi_dlist *entry)
&pos->member != (head); \ &pos->member != (head); \
pos = sbi_list_entry(pos->member.next, typeof(*pos), member)) 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 #endif