From: Eric Dumazet <eric.dumazet@gmail.com>
To: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: linux-kernel <linux-kernel@vger.kernel.org>,
netdev <netdev@vger.kernel.org>, Christoph Lameter <cl@linux.com>,
Tejun Heo <tj@kernel.org>, Patrick McHardy <kaber@trash.net>
Subject: [PATCH net-next] netfilter: nf_conntrack.h: use this_cpu_inc()
Date: Wed, 18 Apr 2012 06:36:40 +0200 [thread overview]
Message-ID: <1334723800.2472.88.camel@edumazet-glaptop> (raw)
From: Eric Dumazet <edumazet@google.com>
this_cpu_inc() is IRQ safe and faster than
local_bh_disable()/__this_cpu_inc()/local_bh_enable(), at least on x86.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Christoph Lameter <cl@linux.com>
Cc: Tejun Heo <tj@kernel.org>
---
include/net/netfilter/nf_conntrack.h | 10 ++--------
1 file changed, 2 insertions(+), 8 deletions(-)
diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h
index ab86036..cce7f6a 100644
--- a/include/net/netfilter/nf_conntrack.h
+++ b/include/net/netfilter/nf_conntrack.h
@@ -321,14 +321,8 @@ extern unsigned int nf_conntrack_max;
extern unsigned int nf_conntrack_hash_rnd;
void init_nf_conntrack_hash_rnd(void);
-#define NF_CT_STAT_INC(net, count) \
- __this_cpu_inc((net)->ct.stat->count)
-#define NF_CT_STAT_INC_ATOMIC(net, count) \
-do { \
- local_bh_disable(); \
- __this_cpu_inc((net)->ct.stat->count); \
- local_bh_enable(); \
-} while (0)
+#define NF_CT_STAT_INC(net, count) __this_cpu_inc((net)->ct.stat->count)
+#define NF_CT_STAT_INC_ATOMIC(net, count) this_cpu_inc((net)->ct.stat->count)
#define MODULE_ALIAS_NFCT_HELPER(helper) \
MODULE_ALIAS("nfct-helper-" helper)
next reply other threads:[~2012-04-18 4:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-18 4:36 Eric Dumazet [this message]
2012-04-18 13:44 ` [PATCH net-next] netfilter: nf_conntrack.h: use this_cpu_inc() Christoph Lameter
2012-04-19 18:16 ` Pablo Neira Ayuso
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