[PATCH v2 30/35] bluetooth: optimize cmtp_alloc_block_id()

Yury Norov
2023-12-03T19:37:28Z

Instead of polling every bit in blockids, switch it to using a
dedicated find_and_set_bit(), and make the function a simple one-liner.

Signed-off-by: Yury Norov <yury.norov@gmail.com>
---
net/bluetooth/cmtp/core.c | 10 ++--------
1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/net/bluetooth/cmtp/core.c b/net/bluetooth/cmtp/core.c
index 90d130588a3e..b1330acbbff3 100644
--- a/net/bluetooth/cmtp/core.c
+++ b/net/bluetooth/cmtp/core.c
@@ -88,15 +88,9 @@ static void __cmtp_copy_session(struct cmtp_session *session, struct cmtp_connin

static inline int cmtp_alloc_block_id(struct cmtp_session *session)
{
- int i, id = -1;
+ int id = find_and_set_bit(&session->blockids, 16);

- for (i = 0; i < 16; i++)
- if (!test_and_set_bit(i, &session->blockids)) {
- id = i;
- break;
- }
-
- return id;
+ return id < 16 ? id : -1;
}

static inline void cmtp_free_block_id(struct cmtp_session *session, int id)
--
2.40.1