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Bluetooth: make use of connection number to optimize the scheduler

Browse source 
This checks if there is any existing connection according to its type
before start iterating in the list and immediately stop iterating when
reaching the number of connections.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This commit is contained in:
Luiz Augusto von Dentz 2011-08-17 16:23:00 +03:00 committed by Gustavo F. Padovan
parent da3ba88a99
commit 52087a792c
2 changed files with 31 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
include/net/bluetooth/hci_core.h
View file

@ -395,6 +395,22 @@ static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
}
}
static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
{
struct hci_conn_hash *h = &hdev->conn_hash;
switch (type) {
case ACL_LINK:
return h->acl_num;
case LE_LINK:
return h->le_num;
case SCO_LINK:
case ESCO_LINK:
return h->sco_num;
default:
return 0;
}
}
static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
__u16 handle)
{

15
net/bluetooth/hci_core.c
View file

@ -2074,6 +2074,9 @@ static inline struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, int
min = c->sent;
conn = c;
}
if (hci_conn_num(hdev, type) == num)
break;
}
if (conn) {
@ -2131,6 +2134,9 @@ static inline void hci_sched_acl(struct hci_dev *hdev)
BT_DBG("%s", hdev->name);
if (!hci_conn_num(hdev, ACL_LINK))
return;
if (!test_bit(HCI_RAW, &hdev->flags)) {
/* ACL tx timeout must be longer than maximum
* link supervision timeout (40.9 seconds) */
@ -2162,6 +2168,9 @@ static inline void hci_sched_sco(struct hci_dev *hdev)
BT_DBG("%s", hdev->name);
if (!hci_conn_num(hdev, SCO_LINK))
return;
while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, &quote))) {
while (quote-- && (skb = skb_dequeue(&conn->data_q))) {
BT_DBG("skb %p len %d", skb, skb->len);
@ -2182,6 +2191,9 @@ static inline void hci_sched_esco(struct hci_dev *hdev)
BT_DBG("%s", hdev->name);
if (!hci_conn_num(hdev, ESCO_LINK))
return;
while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, &quote))) {
while (quote-- && (skb = skb_dequeue(&conn->data_q))) {
BT_DBG("skb %p len %d", skb, skb->len);
@ -2202,6 +2214,9 @@ static inline void hci_sched_le(struct hci_dev *hdev)
BT_DBG("%s", hdev->name);
if (!hci_conn_num(hdev, LE_LINK))
return;
if (!test_bit(HCI_RAW, &hdev->flags)) {
/* LE tx timeout must be longer than maximum
* link supervision timeout (40.9 seconds) */