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net/ipv4: Update ip_tunnel_metadata_cnt static key to modern api

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No changes in refcount semantics -- key init is false; replace

static_key_slow_inc|dec   with   static_branch_inc|dec
static_key_false          with   static_branch_unlikely

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Davidlohr Bueso 2018-05-08 09:06:58 -07:00 committed by David S. Miller
parent 5bafeb6e7e
commit 5263a98f16
2 changed files with 5 additions and 5 deletions
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4
include/net/ip_tunnels.h
View File

@ -477,12 +477,12 @@ static inline struct ip_tunnel_info *lwt_tun_info(struct lwtunnel_state *lwtstat
return (struct ip_tunnel_info *)lwtstate->data;
}
extern struct static_key ip_tunnel_metadata_cnt;
DECLARE_STATIC_KEY_FALSE(ip_tunnel_metadata_cnt);
/* Returns > 0 if metadata should be collected */
static inline int ip_tunnel_collect_metadata(void)
{
return static_key_false(&ip_tunnel_metadata_cnt);
return static_branch_unlikely(&ip_tunnel_metadata_cnt);
}
void __init ip_tunnel_core_init(void);

6
net/ipv4/ip_tunnel_core.c
View File

@ -423,17 +423,17 @@ void __init ip_tunnel_core_init(void)
lwtunnel_encap_add_ops(&ip6_tun_lwt_ops, LWTUNNEL_ENCAP_IP6);
}
struct static_key ip_tunnel_metadata_cnt = STATIC_KEY_INIT_FALSE;
DEFINE_STATIC_KEY_FALSE(ip_tunnel_metadata_cnt);
EXPORT_SYMBOL(ip_tunnel_metadata_cnt);
void ip_tunnel_need_metadata(void)
{
static_key_slow_inc(&ip_tunnel_metadata_cnt);
static_branch_inc(&ip_tunnel_metadata_cnt);
}
EXPORT_SYMBOL_GPL(ip_tunnel_need_metadata);
void ip_tunnel_unneed_metadata(void)
{
static_key_slow_dec(&ip_tunnel_metadata_cnt);
static_branch_dec(&ip_tunnel_metadata_cnt);
}
EXPORT_SYMBOL_GPL(ip_tunnel_unneed_metadata);