Paolo Abeni 6c7c98bad4 sock: avoid dirtying sk_stamp, if possible ...

sock_recv_ts_and_drops() unconditionally set sk->sk_stamp for
every packet, even if the SOCK_TIMESTAMP flag is not set in the
related socket.
If selinux is enabled, this cause a cache miss for every packet
since sk->sk_stamp and sk->sk_security share the same cacheline.
With this change sk_stamp is set only if the SOCK_TIMESTAMP
flag is set, and is cleared for the first packet, so that the user
perceived behavior is unchanged.

This gives up to 5% speed-up under udp-flood with small packets.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2017-03-30 20:05:24 -07:00

..

datagram.c

net: Change return type of sk_busy_loop from bool to void

2017-03-24 20:49:30 -07:00

dev_addr_lists.c

net: fix spelling for synchronized

2014-11-18 15:26:32 -05:00

dev_ioctl.c

dev_ioctl: use sizeof(x) instead of sizeof x

2014-11-18 15:27:32 -05:00

dev.c

net: Commonize busy polling code to focus on napi_id instead of socket

2017-03-24 20:49:31 -07:00

devlink.c

devlink: Support for pipeline debug (dpipe)

2017-03-28 17:11:54 -07:00

drop_monitor.c

drop_monitor: use setup_timer

2017-03-12 23:47:16 -07:00

dst_cache.c

net: dst_cache_per_cpu_dst_set() can be static

2016-03-18 17:45:08 -04:00

dst.c

net: pending_confirm is not used anymore

2017-02-07 13:07:47 -05:00

ethtool.c

ethtool: add CRC32 as an RSS hash function

2017-03-09 16:39:58 -08:00

fib_rules.c

ipv4: fib_rules: Check if rule is a default rule

2017-03-16 10:18:33 -07:00

filter.c

Add a eBPF helper function to retrieve socket uid

2017-03-23 17:01:02 -07:00

flow_dissector.c

flow_dissector: Move GRE dissection into a separate function

2017-03-08 23:08:57 -08:00

flow.c

Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2016-12-12 19:25:04 -08:00

gen_estimator.c

Replace <asm/uaccess.h> with <linux/uaccess.h> globally

2016-12-24 11:46:01 -08:00

gen_stats.c

net_sched: gen_estimator: complete rewrite of rate estimators

2016-12-05 15:21:59 -05:00

gro_cells.c

gro_cells: move to net/core/gro_cells.c

2017-02-08 14:38:18 -05:00

hwbm.c

net: hwbm: Fix unbalanced spinlock in error case

2016-05-25 12:35:09 -07:00

link_watch.c

dev: introduce dev_get_iflink()

2015-04-02 14:04:59 -04:00

lwt_bpf.c

lwtunnel: remove device arg to lwtunnel_build_state

2017-01-30 15:14:22 -05:00

lwtunnel.c

lwtunnel: remove unused but set variable

2017-03-13 23:55:45 -07:00

Makefile

gro_cells: move to net/core/gro_cells.c

2017-02-08 14:38:18 -05:00

neighbour.c

neighbour: fix nlmsg_pid in notifications

2017-03-22 10:48:49 -07:00

net_namespace.c

sched/headers: Prepare to move the task_lock()/unlock() APIs to <linux/sched/task.h>

2017-03-02 08:42:38 +01:00

net-procfs.c

net: remove NETDEV_TX_LOCKED support

2016-04-26 15:53:05 -04:00

net-sysfs.c

net: use net->count to check whether a netns is alive or not

2017-03-13 16:02:27 -07:00

net-sysfs.h

net: netdev_kobject_init: annotate with __init

2014-01-05 20:27:54 -05:00

net-traces.c

net: IPv6 fib lookup tracepoint

2015-11-22 11:54:10 -05:00

netclassid_cgroup.c

cgroup, net_cls: iterate the fds of only the tasks which are being migrated

2017-03-22 10:32:46 -07:00

netevent.c

netevent: remove automatic variable in register_netevent_notifier()

2015-05-31 00:03:21 -07:00

netpoll.c

netpoll: more efficient locking

2016-11-16 18:32:02 -05:00

netprio_cgroup.c

net: break include loop netdevice.h, dsa.h, devlink.h

2017-03-28 22:46:04 -07:00

pktgen.c

net-tc: convert tc_verd to integer bitfields

2017-01-08 20:58:52 -05:00

ptp_classifier.c

ptp: Change ptp_class to a proper bitmask

2015-11-03 11:08:22 -05:00

request_sock.c

ipv4: Namespaceify tcp_max_syn_backlog knob

2016-12-29 11:38:31 -05:00

rtnetlink.c

rtnetlink: Add dump all for netconf

2017-03-22 12:45:17 -07:00

scm.c

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/user.h>

2017-03-02 08:42:29 +01:00

secure_seq.c

tcp: rename *_sequence_number() to *_seq_and_tsoff()

2017-03-09 18:25:34 -08:00

skbuff.c

tcp: mark skbs with SCM_TIMESTAMPING_OPT_STATS

2017-03-21 18:44:17 -07:00

sock_diag.c

Add a helper function to get socket cookie in eBPF

2017-03-23 17:01:02 -07:00

sock_reuseport.c

soreuseport: do not export reuseport_add_sock()

2016-10-18 14:18:23 -04:00

sock.c

sock: avoid dirtying sk_stamp, if possible

2017-03-30 20:05:24 -07:00

stream.c

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h>

2017-03-02 08:42:29 +01:00

sysctl_net_core.c

bpf: make jited programs visible in traces

2017-02-17 13:40:05 -05:00

timestamping.c

net: skb_defer_rx_timestamp should check for phydev before setting up classify

2015-07-09 14:17:15 -07:00

tso.c

net: tso: add support for IPv6

2015-10-26 22:24:22 -07:00

utils.c

net: make in_aton() 32-bit internally

2017-03-24 13:27:19 -07:00