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Bluetooth: make use of connection number to optimize the scheduler

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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
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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) */