From 25cc4ae913a46bcc11b03c37bec59568f2122a36 Mon Sep 17 00:00:00 2001 From: Ying Xue Date: Sun, 3 Feb 2013 20:32:57 +0000 Subject: [PATCH] net: remove redundant check for timer pending state before del_timer As in del_timer() there has already placed a timer_pending() function to check whether the timer to be deleted is pending or not, it's unnecessary to check timer pending state again before del_timer() is called. Signed-off-by: Ying Xue Cc: Eric Dumazet Signed-off-by: David S. Miller --- net/bluetooth/rfcomm/core.c | 4 ++-- net/bridge/netfilter/ebt_ulog.c | 6 ++---- net/core/sock.c | 2 +- net/ipv4/netfilter/ipt_ULOG.c | 12 ++++-------- net/irda/af_irda.c | 3 +-- net/netfilter/ipvs/ip_vs_conn.c | 3 +-- net/sctp/associola.c | 5 ++--- net/sctp/input.c | 3 +-- net/sctp/outqueue.c | 4 +--- net/sctp/sm_sideeffect.c | 6 ++---- net/sctp/transport.c | 11 ++++------- 11 files changed, 21 insertions(+), 38 deletions(-) diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c index 201fdf737209..b23e2713fea8 100644 --- a/net/bluetooth/rfcomm/core.c +++ b/net/bluetooth/rfcomm/core.c @@ -257,7 +257,7 @@ static void rfcomm_session_clear_timer(struct rfcomm_session *s) { BT_DBG("session %p state %ld", s, s->state); - if (timer_pending(&s->timer) && del_timer(&s->timer)) + if (del_timer(&s->timer)) rfcomm_session_put(s); } @@ -285,7 +285,7 @@ static void rfcomm_dlc_clear_timer(struct rfcomm_dlc *d) { BT_DBG("dlc %p state %ld", d, d->state); - if (timer_pending(&d->timer) && del_timer(&d->timer)) + if (del_timer(&d->timer)) rfcomm_dlc_put(d); } diff --git a/net/bridge/netfilter/ebt_ulog.c b/net/bridge/netfilter/ebt_ulog.c index 3476ec469740..3bf43f7bb9d4 100644 --- a/net/bridge/netfilter/ebt_ulog.c +++ b/net/bridge/netfilter/ebt_ulog.c @@ -70,8 +70,7 @@ static void ulog_send(unsigned int nlgroup) { ebt_ulog_buff_t *ub = &ulog_buffers[nlgroup]; - if (timer_pending(&ub->timer)) - del_timer(&ub->timer); + del_timer(&ub->timer); if (!ub->skb) return; @@ -319,8 +318,7 @@ static void __exit ebt_ulog_fini(void) xt_unregister_target(&ebt_ulog_tg_reg); for (i = 0; i < EBT_ULOG_MAXNLGROUPS; i++) { ub = &ulog_buffers[i]; - if (timer_pending(&ub->timer)) - del_timer(&ub->timer); + del_timer(&ub->timer); spin_lock_bh(&ub->lock); if (ub->skb) { kfree_skb(ub->skb); diff --git a/net/core/sock.c b/net/core/sock.c index 235fb89e8973..f1e14e20d181 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -2230,7 +2230,7 @@ EXPORT_SYMBOL(sk_reset_timer); void sk_stop_timer(struct sock *sk, struct timer_list* timer) { - if (timer_pending(timer) && del_timer(timer)) + if (del_timer(timer)) __sock_put(sk); } EXPORT_SYMBOL(sk_stop_timer); diff --git a/net/ipv4/netfilter/ipt_ULOG.c b/net/ipv4/netfilter/ipt_ULOG.c index b5ef3cba2250..7d168dcbd135 100644 --- a/net/ipv4/netfilter/ipt_ULOG.c +++ b/net/ipv4/netfilter/ipt_ULOG.c @@ -88,10 +88,8 @@ static void ulog_send(unsigned int nlgroupnum) { ulog_buff_t *ub = &ulog_buffers[nlgroupnum]; - if (timer_pending(&ub->timer)) { - pr_debug("ulog_send: timer was pending, deleting\n"); - del_timer(&ub->timer); - } + pr_debug("ulog_send: timer is deleting\n"); + del_timer(&ub->timer); if (!ub->skb) { pr_debug("ulog_send: nothing to send\n"); @@ -426,10 +424,8 @@ static void __exit ulog_tg_exit(void) /* remove pending timers and free allocated skb's */ for (i = 0; i < ULOG_MAXNLGROUPS; i++) { ub = &ulog_buffers[i]; - if (timer_pending(&ub->timer)) { - pr_debug("timer was pending, deleting\n"); - del_timer(&ub->timer); - } + pr_debug("timer is deleting\n"); + del_timer(&ub->timer); if (ub->skb) { kfree_skb(ub->skb); diff --git a/net/irda/af_irda.c b/net/irda/af_irda.c index b833677d83d6..d07e3a626446 100644 --- a/net/irda/af_irda.c +++ b/net/irda/af_irda.c @@ -2567,8 +2567,7 @@ bed: err); /* If watchdog is still activated, kill it! */ - if(timer_pending(&(self->watchdog))) - del_timer(&(self->watchdog)); + del_timer(&(self->watchdog)); IRDA_DEBUG(1, "%s(), ...waking up !\n", __func__); diff --git a/net/netfilter/ipvs/ip_vs_conn.c b/net/netfilter/ipvs/ip_vs_conn.c index 30e764ad021f..68e368a4beed 100644 --- a/net/netfilter/ipvs/ip_vs_conn.c +++ b/net/netfilter/ipvs/ip_vs_conn.c @@ -796,8 +796,7 @@ static void ip_vs_conn_expire(unsigned long data) */ if (likely(atomic_read(&cp->refcnt) == 1)) { /* delete the timer if it is activated by other users */ - if (timer_pending(&cp->timer)) - del_timer(&cp->timer); + del_timer(&cp->timer); /* does anybody control me? */ if (cp->control) diff --git a/net/sctp/associola.c b/net/sctp/associola.c index b45ed1f96921..2f95f5a5145d 100644 --- a/net/sctp/associola.c +++ b/net/sctp/associola.c @@ -434,8 +434,7 @@ void sctp_association_free(struct sctp_association *asoc) * on our state. */ for (i = SCTP_EVENT_TIMEOUT_NONE; i < SCTP_NUM_TIMEOUT_TYPES; ++i) { - if (timer_pending(&asoc->timers[i]) && - del_timer(&asoc->timers[i])) + if (del_timer(&asoc->timers[i])) sctp_association_put(asoc); } @@ -1497,7 +1496,7 @@ void sctp_assoc_rwnd_increase(struct sctp_association *asoc, unsigned int len) /* Stop the SACK timer. */ timer = &asoc->timers[SCTP_EVENT_TIMEOUT_SACK]; - if (timer_pending(timer) && del_timer(timer)) + if (del_timer(timer)) sctp_association_put(asoc); } } diff --git a/net/sctp/input.c b/net/sctp/input.c index 8bd3c279427e..965bbbbe48d4 100644 --- a/net/sctp/input.c +++ b/net/sctp/input.c @@ -468,8 +468,7 @@ void sctp_icmp_proto_unreachable(struct sock *sk, } else { struct net *net = sock_net(sk); - if (timer_pending(&t->proto_unreach_timer) && - del_timer(&t->proto_unreach_timer)) + if (del_timer(&t->proto_unreach_timer)) sctp_association_put(asoc); sctp_do_sm(net, SCTP_EVENT_T_OTHER, diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c index 9bcdbd02d777..01dca753db16 100644 --- a/net/sctp/outqueue.c +++ b/net/sctp/outqueue.c @@ -1700,10 +1700,8 @@ static void sctp_check_transmitted(struct sctp_outq *q, * address. */ if (!transport->flight_size) { - if (timer_pending(&transport->T3_rtx_timer) && - del_timer(&transport->T3_rtx_timer)) { + if (del_timer(&transport->T3_rtx_timer)) sctp_transport_put(transport); - } } else if (restart_timer) { if (!mod_timer(&transport->T3_rtx_timer, jiffies + transport->rto)) diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c index c9577754a708..8aab894aeabe 100644 --- a/net/sctp/sm_sideeffect.c +++ b/net/sctp/sm_sideeffect.c @@ -674,10 +674,8 @@ static void sctp_cmd_t3_rtx_timers_stop(sctp_cmd_seq_t *cmds, list_for_each_entry(t, &asoc->peer.transport_addr_list, transports) { - if (timer_pending(&t->T3_rtx_timer) && - del_timer(&t->T3_rtx_timer)) { + if (del_timer(&t->T3_rtx_timer)) sctp_transport_put(t); - } } } @@ -1517,7 +1515,7 @@ static int sctp_cmd_interpreter(sctp_event_t event_type, case SCTP_CMD_TIMER_STOP: timer = &asoc->timers[cmd->obj.to]; - if (timer_pending(timer) && del_timer(timer)) + if (del_timer(timer)) sctp_association_put(asoc); break; diff --git a/net/sctp/transport.c b/net/sctp/transport.c index ca5331cc1ed2..fafd2a461ba0 100644 --- a/net/sctp/transport.c +++ b/net/sctp/transport.c @@ -151,13 +151,11 @@ void sctp_transport_free(struct sctp_transport *transport) * structure hang around in memory since we know * the tranport is going away. */ - if (timer_pending(&transport->T3_rtx_timer) && - del_timer(&transport->T3_rtx_timer)) + if (del_timer(&transport->T3_rtx_timer)) sctp_transport_put(transport); /* Delete the ICMP proto unreachable timer if it's active. */ - if (timer_pending(&transport->proto_unreach_timer) && - del_timer(&transport->proto_unreach_timer)) + if (del_timer(&transport->proto_unreach_timer)) sctp_association_put(transport->asoc); sctp_transport_put(transport); @@ -655,10 +653,9 @@ void sctp_transport_reset(struct sctp_transport *t) void sctp_transport_immediate_rtx(struct sctp_transport *t) { /* Stop pending T3_rtx_timer */ - if (timer_pending(&t->T3_rtx_timer)) { - (void)del_timer(&t->T3_rtx_timer); + if (del_timer(&t->T3_rtx_timer)) sctp_transport_put(t); - } + sctp_retransmit(&t->asoc->outqueue, t, SCTP_RTXR_T3_RTX); if (!timer_pending(&t->T3_rtx_timer)) { if (!mod_timer(&t->T3_rtx_timer, jiffies + t->rto)) -- 2.30.2