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| author | Eric Dumazet <dada1@cosmosbay.com> | 2006-10-12 21:21:06 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-10-15 23:14:17 -0700 |
| commit | 4663afe2c848e2abc8791202beecf40684f13eb4 (patch) | |
| tree | 4d67cf3a9910bb9c224b4495b554560ec438477e /net/ipv4/inetpeer.c | |
| parent | ea614d7f4fb2d436b7a5ee490d1011615f6b38d5 (diff) | |
| download | blackbird-op-linux-4663afe2c848e2abc8791202beecf40684f13eb4.tar.gz blackbird-op-linux-4663afe2c848e2abc8791202beecf40684f13eb4.zip | |
[NET]: reduce sizeof(struct inet_peer), cleanup, change in peer_check_expire()
1) shrink struct inet_peer on 64 bits platforms.
Diffstat (limited to 'net/ipv4/inetpeer.c')
| -rw-r--r-- | net/ipv4/inetpeer.c | 29 |
1 files changed, 22 insertions, 7 deletions
diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c index 2b1a54b59c48..f072f3875af8 100644 --- a/net/ipv4/inetpeer.c +++ b/net/ipv4/inetpeer.c @@ -94,10 +94,8 @@ int inet_peer_minttl = 120 * HZ; /* TTL under high load: 120 sec */ int inet_peer_maxttl = 10 * 60 * HZ; /* usual time to live: 10 min */ static struct inet_peer *inet_peer_unused_head; -/* Exported for inet_putpeer inline function. */ -struct inet_peer **inet_peer_unused_tailp = &inet_peer_unused_head; -DEFINE_SPINLOCK(inet_peer_unused_lock); -#define PEER_MAX_CLEANUP_WORK 30 +static struct inet_peer **inet_peer_unused_tailp = &inet_peer_unused_head; +static DEFINE_SPINLOCK(inet_peer_unused_lock); static void peer_check_expire(unsigned long dummy); static DEFINE_TIMER(peer_periodic_timer, peer_check_expire, 0, 0); @@ -340,7 +338,8 @@ static int cleanup_once(unsigned long ttl) spin_lock_bh(&inet_peer_unused_lock); p = inet_peer_unused_head; if (p != NULL) { - if (time_after(p->dtime + ttl, jiffies)) { + __u32 delta = (__u32)jiffies - p->dtime; + if (delta < ttl) { /* Do not prune fresh entries. */ spin_unlock_bh(&inet_peer_unused_lock); return -1; @@ -432,7 +431,7 @@ out_free: /* Called with local BH disabled. */ static void peer_check_expire(unsigned long dummy) { - int i; + unsigned long now = jiffies; int ttl; if (peer_total >= inet_peer_threshold) @@ -441,7 +440,10 @@ static void peer_check_expire(unsigned long dummy) ttl = inet_peer_maxttl - (inet_peer_maxttl - inet_peer_minttl) / HZ * peer_total / inet_peer_threshold * HZ; - for (i = 0; i < PEER_MAX_CLEANUP_WORK && !cleanup_once(ttl); i++); + while (!cleanup_once(ttl)) { + if (jiffies != now) + break; + } /* Trigger the timer after inet_peer_gc_mintime .. inet_peer_gc_maxtime * interval depending on the total number of entries (more entries, @@ -455,3 +457,16 @@ static void peer_check_expire(unsigned long dummy) peer_total / inet_peer_threshold * HZ; add_timer(&peer_periodic_timer); } + +void inet_putpeer(struct inet_peer *p) +{ + spin_lock_bh(&inet_peer_unused_lock); + if (atomic_dec_and_test(&p->refcnt)) { + p->unused_prevp = inet_peer_unused_tailp; + p->unused_next = NULL; + *inet_peer_unused_tailp = p; + inet_peer_unused_tailp = &p->unused_next; + p->dtime = (__u32)jiffies; + } + spin_unlock_bh(&inet_peer_unused_lock); +} |
