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linux/net
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Soheil Hassas Yeganeh 0a38806f31 net: revert "Update RFS target at poll for tcp/udp" 
On multi-threaded processes, one common architecture is to have
one (or a small number of) threads polling sockets, and a
considerably larger pool of threads reading form and writing to the
sockets. When we set RPS core on tcp_poll() or udp_poll() we essentially
steer all packets of all the polled FDs to one (or small number of)
cores, creaing a bottleneck and/or RPS misprediction.

Another common architecture is to shard FDs among threads pinned
to cores. In such a setting, setting RPS core in tcp_poll() and
udp_poll() is redundant because the RFS core is correctly
set in recvmsg and sendmsg.

Thus, revert the following commit:
c3f1dbaf6e ("net: Update RFS target at poll for tcp/udp").

Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-05 11:14:57 -05:00
..
6lowpan License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
9p make sock_alloc_file() do sock_release() on failures 2017-12-05 18:39:29 -05:00
802 treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
8021q Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-12 09:17:05 +09:00
appletalk treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
atm atm: mpoa: remove 32-bit timekeeping 2017-11-30 09:26:32 -05:00
ax25 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
batman-adv batman-adv: Convert packet.h to uapi header 2017-12-21 15:35:53 -05:00
bluetooth Bluetooth: introduce DEFINE_SHOW_ATTRIBUTE() macro 2017-12-13 20:20:34 +01:00
bpf bpf: add meta pointer for direct access 2017-09-26 13:36:44 -07:00
bridge Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-12-22 11:16:31 -05:00
caif License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
can net: use rtnl_register_module where needed 2017-12-04 11:32:39 -05:00
ceph We have a set of file locking improvements from Zheng, rbd rw/ro 2017-11-21 05:38:32 -10:00
core Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-12-29 15:42:26 -05:00
dcb rtnetlink: make rtnl_register accept a flags parameter 2017-08-09 16:57:38 -07:00
dccp net: dccp: Remove dccpprobe module 2018-01-02 14:27:30 -05:00
decnet net: use rtnl_register_module where needed 2017-12-04 11:32:39 -05:00
dns_resolver KEYS: Fix race between updating and finding a negative key 2017-10-18 09:12:40 +01:00
dsa net: dsa: Fix dsa_legacy_register() return value 2018-01-02 21:52:48 -05:00
ethernet
hsr net: hsr: Convert timers to use timer_setup() 2017-10-25 13:00:27 +09:00
ieee802154 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
ife MAINTAINERS: Update Yotam's E-mail 2017-11-01 12:19:03 +09:00
ipv4 net: revert "Update RFS target at poll for tcp/udp" 2018-01-05 11:14:57 -05:00
ipv6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-12-29 15:42:26 -05:00
ipx Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
iucv
kcm make sock_alloc_file() do sock_release() on failures 2017-12-05 18:39:29 -05:00
key af_key: replace BUG_ON on WARN_ON in net_exit hook 2017-11-14 15:45:52 +09:00
l2tp l2tp: remove configurable payload offset 2018-01-05 11:03:19 -05:00
l3mdev
lapb treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts 2017-11-21 16:35:54 -08:00
llc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-11-15 11:56:19 -08:00
mac80211 We have things all over the place, no point listing them. 2018-01-04 14:33:29 -05:00
mac802154 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
mpls net: use rtnl_register_module where needed 2017-12-04 11:32:39 -05:00
ncsi net/ncsi: Don't take any action on HNCDSC AEN 2017-12-18 14:50:11 -05:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-12-16 22:11:55 -05:00
netlabel net/netlabel: Add list_next_rcu() in rcu_dereference(). 2017-11-18 10:32:41 +09:00
netlink Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-12-16 22:11:55 -05:00
netrom treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts 2017-11-21 16:35:54 -08:00
nfc treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
nsh openvswitch: enable NSH support 2017-11-08 16:12:33 +09:00
openvswitch openvswitch: drop unneeded newline 2018-01-02 13:49:53 -05:00
packet net: Add asynchronous callbacks for xfrm on layer 2. 2017-12-20 10:41:36 +01:00
phonet net: use rtnl_register_module where needed 2017-12-04 11:32:39 -05:00
psample MAINTAINERS: Update Yotam's E-mail 2017-11-01 12:19:03 +09:00
qrtr net: use rtnl_register_module where needed 2017-12-04 11:32:39 -05:00
rds Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-12-29 15:42:26 -05:00
rfkill
rose treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts 2017-11-21 16:35:54 -08:00
rxrpc rxrpc: Use correct netns source in rxrpc_release_sock() 2017-12-03 10:05:20 -05:00
sched net: sched: fix skb leak in dev_requeue_skb() 2018-01-02 13:48:29 -05:00
sctp net: sctp: Remove debug SCTP probe module 2018-01-02 14:27:29 -05:00
smc smc: support variable CLC proposal messages 2017-12-07 15:03:12 -05:00
strparser strparser: Call sock_owned_by_user_nocheck 2017-12-28 14:28:22 -05:00
sunrpc NFS client fixes for Linux 4.15-rc4 2017-12-16 13:12:53 -08:00
switchdev net: bridge: Add/del switchdev object on host join/leave 2017-11-10 13:41:40 +09:00
tipc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-12-29 15:42:26 -05:00
tls tls: don't override sk_write_space if tls_set_sw_offload fails. 2017-11-14 16:26:35 +09:00
unix Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
vmw_vsock VSOCK: fix outdated sk_state value in hvs_release() 2017-12-05 15:07:37 -05:00
wimax License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
wireless We have things all over the place, no point listing them. 2018-01-04 14:33:29 -05:00
x25 treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts 2017-11-21 16:35:54 -08:00
xfrm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-12-29 15:42:26 -05:00
compat.c net: compat: assert the size of cmsg copied in is as expected 2017-09-20 15:36:18 -07:00
Kconfig net: tcp: Remove TCP probe module 2018-01-02 14:27:29 -05:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
socket.c sock: Move the socket inuse to namespace. 2017-12-19 09:58:14 -05:00
sysctl_net.c