diff options
| author | Samuel Holland <[email protected]> | 2025-06-16 20:21:35 -0700 |
|---|---|---|
| committer | Anup Patel <[email protected]> | 2025-09-01 10:39:11 +0530 |
| commit | 64a38525e6b00fa9bab704513b37adf8a89c3f03 (patch) | |
| tree | dd2fa7e2f1c157feb7dfd2115b5c59d6f8ed59f7 | |
| parent | 1ffbd063c4da252f59cc570e537a3c8821ed6967 (diff) | |
lib: sbi_list: Add a helper for reverse list iteration
Some use cases require iterating through a list in both directions.
Signed-off-by: Samuel Holland <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
Tested-by: Anup Patel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Anup Patel <[email protected]>
| -rw-r--r-- | include/sbi/sbi_list.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/sbi/sbi_list.h b/include/sbi/sbi_list.h index be69fc43..587c655c 100644 --- a/include/sbi/sbi_list.h +++ b/include/sbi/sbi_list.h @@ -173,4 +173,15 @@ static inline void sbi_list_del_init(struct sbi_dlist *entry) &pos->member != (head); \ pos = n, n = sbi_list_entry(pos->member.next, typeof(*pos), member)) +/** + * Iterate over list of given type in reverse order + * @param pos the type * to use as a loop cursor. + * @param head the head for your list. + * @param member the name of the list_struct within the struct. + */ +#define sbi_list_for_each_entry_reverse(pos, head, member) \ + for (pos = sbi_list_entry((head)->prev, typeof(*pos), member); \ + &pos->member != (head); \ + pos = sbi_list_entry(pos->member.prev, typeof(*pos), member)) + #endif |