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45f50bed1d
linux/net
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Eric Dumazet 45f50bed1d net_sched: remove generic throttled management 
__QDISC_STATE_THROTTLED bit manipulation is rather expensive
for HTB and few others.

I already removed it for sch_fq in commit f2600cf02b
("net: sched: avoid costly atomic operation in fq_dequeue()")
and so far nobody complained.

When one ore more packets are stuck in one or more throttled
HTB class, a htb dequeue() performs two atomic operations
to clear/set __QDISC_STATE_THROTTLED bit, while root qdisc
lock is held.

Removing this pair of atomic operations bring me a 8 % performance
increase on 200 TCP_RR tests, in presence of throttled classes.

This patch has no side effect, since nothing actually uses
disc_is_throttled() anymore.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-10 23:58:21 -07:00
..
6lowpan 6lowpan: move mac802154 header 2016-04-13 10:41:10 +02:00
9p remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
802
8021q vlan: Propagate MAC address to VLANs 2016-05-31 11:56:48 -07:00
appletalk
atm net/atm: sk_err_soft must be positive 2016-05-23 13:51:10 -07:00
ax25
batman-adv batman-adv: initialize ELP orig address on secondary interfaces 2016-05-18 11:49:44 +08:00
bluetooth net: add netdev_lockdep_set_classes() helper 2016-06-09 13:28:37 -07:00
bridge bridge: Don't insert unnecessary local fdb entry on changing mac address 2016-06-08 00:31:38 -07:00
caif
can
ceph libceph: use %s instead of %pE in dout()s 2016-05-30 23:00:23 +02:00
core bpf: reject wrong sized filters earlier 2016-06-10 18:00:57 -07:00
dcb
dccp dccp: do not assume DCCP code is non preemptible 2016-05-02 17:02:25 -04:00
decnet decnet: Do not build routes to devices without decnet private data. 2016-04-10 23:01:30 -04:00
dns_resolver KEYS: Add a facility to restrict new links into a keyring 2016-04-11 22:37:37 +01:00
dsa net: dsa: Initialize CPU port ethtool ops per tree 2016-06-08 11:23:42 -07:00
ethernet
hsr net/hsr: Use setup_timer and mod_timer. 2016-05-16 14:00:43 -04:00
ieee802154 net: add netdev_lockdep_set_classes() helper 2016-06-09 13:28:37 -07:00
ipv4 tcp: add NV congestion control 2016-06-10 23:07:49 -07:00
ipv6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-06-10 11:52:24 -07:00
ipx
irda TTY and Serial driver update for 4.7-rc1 2016-05-20 20:57:27 -07:00
iucv
kcm kcm: fix a signedness in kcm_splice_read() 2016-05-19 11:26:51 -07:00
key
l2tp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-06-10 11:52:24 -07:00
l3mdev net: Add l3mdev rule 2016-06-08 11:36:02 -07:00
lapb net/lapb: tuse %*ph to dump buffers 2016-05-29 22:33:25 -07:00
llc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-05-09 15:59:24 -04:00
mac80211 For the next cycle, we have the following: 2016-06-10 23:13:32 -07:00
mac802154
mpls skbuff: introduce skb_gso_validate_mtu 2016-06-03 19:37:21 -04:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-06-10 11:52:24 -07:00
netlabel
netlink net/netlink/af_netlink.h: Remove unused structure. 2016-06-09 22:26:24 -07:00
netrom
nfc nfc: nci: Add nci_nfcc_loopback to the nci core 2016-05-04 01:48:16 +02:00
openvswitch openvswitch: Add packet truncation support. 2016-06-10 17:58:03 -07:00
packet packet: use common code for virtio_net_hdr and skb GSO conversion 2016-06-10 23:03:56 -07:00
phonet
qrtr Merge tag 'qcom-soc-for-4.7-2' into net-next 2016-05-17 14:11:19 -04:00
rds RDS: IB: Remove deprecated create_workqueue 2016-06-10 22:52:28 -07:00
rfkill
rose
rxrpc rxrpc: Limit the listening backlog 2016-06-10 18:14:47 -07:00
sched net_sched: remove generic throttled management 2016-06-10 23:58:21 -07:00
sctp sctp: sctp should change socket state when shutdown is received 2016-06-10 23:21:23 -07:00
sunrpc NFS client updates for Linux 4.7 2016-05-26 10:33:33 -07:00
switchdev switchdev: pass pointer to fib_info instead of copy 2016-05-17 13:58:49 -04:00
tipc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-06-10 11:52:24 -07:00
unix
vmw_vsock Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-05-09 15:59:24 -04:00
wimax
wireless For the next cycle, we have the following: 2016-06-10 23:13:32 -07:00
x25 net: fix a kernel infoleak in x25 module 2016-05-09 22:45:33 -04:00
xfrm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-05-09 15:59:24 -04:00
compat.c packet: compat support for sock_fprog 2016-06-09 23:41:03 -07:00
Kconfig bpf: add generic constant blinding for use in jits 2016-05-16 13:49:32 -04:00
Makefile net: Add Qualcomm IPC router 2016-05-08 23:46:14 -04:00
socket.c fs: poll/select/recvmmsg: use timespec64 for timeout events 2016-05-19 19:12:14 -07:00
sysctl_net.c