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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2022-11-30 15:48:35 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-01-06 16:37:46 +0100 |
| commit | 4d70c74659d9746502b23d055dba03d1d28ec388 (patch) | |
| tree | 50f46a418c97471e6cde7228c62e70accb346313 /include/linux/list.h | |
| parent | b04e1747fbcc6bf4a93a95b5c2505bf2a6467ee8 (diff) | |
| download | linux-4d70c74659d9746502b23d055dba03d1d28ec388.tar.gz | |
i915: Move list_count() to list.h as list_count_nodes() for broader use
Some of the existing users, and definitely will be new ones, want to
count existing nodes in the list. Provide a generic API for that by
moving code from i915 to list.h.
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20221130134838.23805-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/list.h')
| -rw-r--r-- | include/linux/list.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/list.h b/include/linux/list.h index 61762054b4be92..f10344dbad4dfe 100644 --- a/include/linux/list.h +++ b/include/linux/list.h @@ -656,6 +656,21 @@ static inline void list_splice_tail_init(struct list_head *list, pos = n, n = pos->prev) /** + * list_count_nodes - count nodes in the list + * @head: the head for your list. + */ +static inline size_t list_count_nodes(struct list_head *head) +{ + struct list_head *pos; + size_t count = 0; + + list_for_each(pos, head) + count++; + + return count; +} + +/** * list_entry_is_head - test if the entry points to the head of the list * @pos: the type * to cursor * @head: the head for your list. |