hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

[AX.25]: Optimize AX.25 socket list lock 

Right now all uses of the ax25_list_lock lock are _bh locks but knowing
some code is only ever getting invoked from _bh context we can better.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ralf Baechle 2006-07-12 13:25:23 -07:00 committed by David S. Miller
parent da952315c9
commit c19c4b9c9a
3 changed files with 13 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
net/ax25/af_ax25.c
View File

@ -145,7 +145,7 @@ struct sock *ax25_find_listener(ax25_address *addr, int digi,
ax25_cb *s;
struct hlist_node *node;
spin_lock_bh(&ax25_list_lock);
spin_lock(&ax25_list_lock);
ax25_for_each(s, node, &ax25_list) {
if ((s->iamdigi && !digi) || (!s->iamdigi && digi))
continue;
@ -154,12 +154,12 @@ struct sock *ax25_find_listener(ax25_address *addr, int digi,
/* If device is null we match any device */
if (s->ax25_dev == NULL || s->ax25_dev->dev == dev) {
sock_hold(s->sk);
spin_unlock_bh(&ax25_list_lock);
spin_unlock(&ax25_list_lock);
return s->sk;
}
}
}
spin_unlock_bh(&ax25_list_lock);
spin_unlock(&ax25_list_lock);
return NULL;
}
@ -174,7 +174,7 @@ struct sock *ax25_get_socket(ax25_address *my_addr, ax25_address *dest_addr,
ax25_cb *s;
struct hlist_node *node;
spin_lock_bh(&ax25_list_lock);
spin_lock(&ax25_list_lock);
ax25_for_each(s, node, &ax25_list) {
if (s->sk && !ax25cmp(&s->source_addr, my_addr) &&
!ax25cmp(&s->dest_addr, dest_addr) &&
@ -185,7 +185,7 @@ struct sock *ax25_get_socket(ax25_address *my_addr, ax25_address *dest_addr,
}
}
spin_unlock_bh(&ax25_list_lock);
spin_unlock(&ax25_list_lock);
return sk;
}
@ -235,7 +235,7 @@ void ax25_send_to_raw(ax25_address *addr, struct sk_buff *skb, int proto)
struct sk_buff *copy;
struct hlist_node *node;
spin_lock_bh(&ax25_list_lock);
spin_lock(&ax25_list_lock);
ax25_for_each(s, node, &ax25_list) {
if (s->sk != NULL && ax25cmp(&s->source_addr, addr) == 0 &&
s->sk->sk_type == SOCK_RAW &&
@ -248,7 +248,7 @@ void ax25_send_to_raw(ax25_address *addr, struct sk_buff *skb, int proto)
kfree_skb(copy);
}
}
spin_unlock_bh(&ax25_list_lock);
spin_unlock(&ax25_list_lock);
}
/*

8
net/ax25/ax25_ds_subr.c
View File

@ -80,7 +80,7 @@ void ax25_ds_enquiry_response(ax25_cb *ax25)
ax25_start_t3timer(ax25);
ax25_ds_set_timer(ax25->ax25_dev);
spin_lock_bh(&ax25_list_lock);
spin_lock(&ax25_list_lock);
ax25_for_each(ax25o, node, &ax25_list) {
if (ax25o == ax25)
continue;
@ -106,7 +106,7 @@ void ax25_ds_enquiry_response(ax25_cb *ax25)
if (ax25o->state != AX25_STATE_0)
ax25_start_t3timer(ax25o);
}
spin_unlock_bh(&ax25_list_lock);
spin_unlock(&ax25_list_lock);
}
void ax25_ds_establish_data_link(ax25_cb *ax25)
@ -162,13 +162,13 @@ static int ax25_check_dama_slave(ax25_dev *ax25_dev)
int res = 0;
struct hlist_node *node;
spin_lock_bh(&ax25_list_lock);
spin_lock(&ax25_list_lock);
ax25_for_each(ax25, node, &ax25_list)
if (ax25->ax25_dev == ax25_dev && (ax25->condition & AX25_COND_DAMA_MODE) && ax25->state > AX25_STATE_1) {
res = 1;
break;
}
spin_unlock_bh(&ax25_list_lock);
spin_unlock(&ax25_list_lock);
return res;
}

4
net/ax25/ax25_ds_timer.c
View File

@ -85,7 +85,7 @@ static void ax25_ds_timeout(unsigned long arg)
return;
}
spin_lock_bh(&ax25_list_lock);
spin_lock(&ax25_list_lock);
ax25_for_each(ax25, node, &ax25_list) {
if (ax25->ax25_dev != ax25_dev || !(ax25->condition & AX25_COND_DAMA_MODE))
continue;
@ -93,7 +93,7 @@ static void ax25_ds_timeout(unsigned long arg)
ax25_send_control(ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
ax25_disconnect(ax25, ETIMEDOUT);
}
spin_unlock_bh(&ax25_list_lock);
spin_unlock(&ax25_list_lock);
ax25_dev_dama_off(ax25_dev);
}