From: Jesper Juhl <jesper.juhl@gmail.com>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Cc: Netfilter Core Team <coreteam@netfilter.org>,
Rusty Russell <rusty@rustcorp.com.au>,
Andrew Morton <akpm@osdl.org>,
Jesper Juhl <jesper.juhl@gmail.com>
Subject: [PATCH] Decrease number of pointer derefs in nf_conntrack_core.c
Date: Thu, 8 Dec 2005 23:36:19 +0100 [thread overview]
Message-ID: <200512082336.19695.jesper.juhl@gmail.com> (raw)
Hi,
Here's a small patch to decrease the number of pointer derefs in
net/netfilter/nf_conntrack_core.c
Benefits of the patch:
- Fewer pointer dereferences should make the code slightly faster.
- Size of generated code is smaller
- improved readability
Please consider applying.
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
---
net/netfilter/nf_conntrack_core.c | 7 ++++---
1 files changed, 4 insertions(+), 3 deletions(-)
orig:
text data bss dec hex filename
12636 49 760 13445 3485 net/netfilter/nf_conntrack_core.o
patched:
text data bss dec hex filename
11825 183 632 12640 3160 net/netfilter/nf_conntrack_core.o
--- linux-2.6.15-rc5-git1-orig/net/netfilter/nf_conntrack_core.c 2005-12-04 18:48:58.000000000 +0100
+++ linux-2.6.15-rc5-git1/net/netfilter/nf_conntrack_core.c 2005-12-08 20:13:03.000000000 +0100
@@ -1129,6 +1129,7 @@ static inline int refresh_timer(struct n
int nf_conntrack_expect_related(struct nf_conntrack_expect *expect)
{
struct nf_conntrack_expect *i;
+ struct nf_conn *master = expect->master;
int ret;
DEBUGP("nf_conntrack_expect_related %p\n", related_to);
@@ -1149,9 +1150,9 @@ int nf_conntrack_expect_related(struct n
}
}
/* Will be over limit? */
- if (expect->master->helper->max_expected &&
- expect->master->expecting >= expect->master->helper->max_expected)
- evict_oldest_expect(expect->master);
+ if (master->helper->max_expected &&
+ master->expecting >= master->helper->max_expected)
+ evict_oldest_expect(master);
nf_conntrack_expect_insert(expect);
nf_conntrack_expect_event(IPEXP_NEW, expect);
next reply other threads:[~2005-12-08 22:35 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-08 22:36 Jesper Juhl [this message]
2005-12-09 5:05 ` [netfilter-core] [PATCH] Decrease number of pointer derefs in nf_conntrack_core.c Harald Welte
2005-12-09 11:04 ` Ingo Molnar
2005-12-09 10:18 ` Jesper Juhl
2005-12-09 10:36 ` Tim Schmielau
2005-12-09 11:49 ` Ingo Molnar
2005-12-11 1:47 ` Jesper Juhl
2005-12-12 7:30 ` [netfilter-core] " Patrick McHardy
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