From 93ac53410a82a4f1bf2baf9d65d95cc29f2774ca Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Tue, 17 Jul 2012 14:09:39 -0700 Subject: [PATCH] ipv4: Dirty less cache lines in route caching paths. Don't bother incrementing dst->__use and setting dst->lastuse, they are completely pointless and just slow things down. Signed-off-by: David S. Miller --- net/ipv4/route.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 7e1c0ed0ef70..b8707779b85d 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -1443,7 +1443,7 @@ static int __mkroute_input(struct sk_buff *skb, if (!(flags & RTCF_DIRECTSRC) && !itag) { rth = FIB_RES_NH(*res).nh_rth_input; if (rt_cache_valid(rth)) { - dst_use(&rth->dst, jiffies); + dst_hold(&rth->dst); goto out; } do_cache = true; @@ -1619,7 +1619,7 @@ local_input: if (!(flags & RTCF_DIRECTSRC) && !itag) { rth = FIB_RES_NH(res).nh_rth_input; if (rt_cache_valid(rth)) { - dst_use(&rth->dst, jiffies); + dst_hold(&rth->dst); goto set_and_out; } do_cache = true; @@ -1789,7 +1789,7 @@ static struct rtable *__mkroute_output(const struct fib_result *res, if (!fnhe) { rth = FIB_RES_NH(*res).nh_rth_output; if (rt_cache_valid(rth)) { - dst_use(&rth->dst, jiffies); + dst_hold(&rth->dst); return rth; } } -- 2.34.1