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| author |   viresh kumar <viresh.kumar@linaro.org> | 2014-01-22 12:23:32 +0530 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2014-01-22 21:57:05 -0800 |
| commit | 906e073f3e842877b59d669b25aa76f65ba775b3 (patch) | |
| tree | a6ab362f3047e8ac28516b4ecb2d5c9b518c1966 /net/ipv4/devinet.c | |
| parent | ipv6: enable anycast addresses as source addresses for datagrams (diff) | |
| download | linux-dev-906e073f3e842877b59d669b25aa76f65ba775b3.tar.xz linux-dev-906e073f3e842877b59d669b25aa76f65ba775b3.zip | |
net/ipv4: queue work on power efficient wq
Workqueue used in ipv4 layer have no real dependency of scheduling these on the
cpu which scheduled them.
On a idle system, it is observed that an idle cpu wakes up many times just to
service this work. It would be better if we can schedule it on a cpu which the
scheduler believes to be the most appropriate one.
This patch replaces normal workqueues with power efficient versions. This
doesn't change existing behavior of code unless CONFIG_WQ_POWER_EFFICIENT is
enabled.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/devinet.c')
| -rw-r--r-- | net/ipv4/devinet.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index 646023bd5449..ac2dff3c2c1c 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -474,7 +474,7 @@ static int __inet_insert_ifa(struct in_ifaddr *ifa, struct nlmsghdr *nlh, inet_hash_insert(dev_net(in_dev->dev), ifa); cancel_delayed_work(&check_lifetime_work); - schedule_delayed_work(&check_lifetime_work, 0); + queue_delayed_work(system_power_efficient_wq, &check_lifetime_work, 0); /* Send message first, then call notifier. Notifier will trigger FIB update, so that @@ -684,7 +684,8 @@ static void check_lifetime(struct work_struct *work) if (time_before(next_sched, now + ADDRCONF_TIMER_FUZZ_MAX)) next_sched = now + ADDRCONF_TIMER_FUZZ_MAX; - schedule_delayed_work(&check_lifetime_work, next_sched - now); + queue_delayed_work(system_power_efficient_wq, &check_lifetime_work, + next_sched - now); } static void set_ifa_lifetime(struct in_ifaddr *ifa, __u32 valid_lft, @@ -842,7 +843,8 @@ static int inet_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh) ifa = ifa_existing; set_ifa_lifetime(ifa, valid_lft, prefered_lft); cancel_delayed_work(&check_lifetime_work); - schedule_delayed_work(&check_lifetime_work, 0); + queue_delayed_work(system_power_efficient_wq, + &check_lifetime_work, 0); rtmsg_ifa(RTM_NEWADDR, ifa, nlh, NETLINK_CB(skb).portid); blocking_notifier_call_chain(&inetaddr_chain, NETDEV_UP, ifa); } @@ -2322,7 +2324,7 @@ void __init devinet_init(void) register_gifconf(PF_INET, inet_gifconf); register_netdevice_notifier(&ip_netdev_notifier); - schedule_delayed_work(&check_lifetime_work, 0); + queue_delayed_work(system_power_efficient_wq, &check_lifetime_work, 0); rtnl_af_register(&inet_af_ops); |