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netlink: Eliminate kmalloc in netlink dump operation.

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Following patch stores struct netlink_callback in netlink_sock
to avoid allocating and freeing it on every netlink dump msg.
Only one dump operation is allowed for a given socket at a time
therefore we can safely convert cb pointer to cb struct inside
netlink_sock.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pravin B Shelar
2013-08-15 15:31:06 -07:00
committed by David S. Miller
parent de98ac5eee
commit 16b304f340
2 changed files with 47 additions and 59 deletions
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3
net/netlink/af_netlink.h
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@@ -32,7 +32,8 @@ struct netlink_sock {
unsigned long *groups;
unsigned long state;
wait_queue_head_t wait;
struct netlink_callback *cb;
bool cb_running;
struct netlink_callback cb;
struct mutex *cb_mutex;
struct mutex cb_def_mutex;
void (*netlink_rcv)(struct sk_buff *skb);