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Eric Dumazet f4a775d144 net: introduce __skb_header_release() 
While profiling TCP stack, I noticed one useless atomic operation
in tcp_sendmsg(), caused by skb_header_release().

It turns out all current skb_header_release() users have a fresh skb,
that no other user can see, so we can avoid one atomic operation.

Introduce __skb_header_release() to clearly document this.

This gave me a 1.5 % improvement on TCP_RR workload.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-26 15:40:06 -04:00
..
6lowpan
6lowpan: Allow 6LoWPAN to be modular
2014-08-07 11:44:18 -07:00
9p
9P: remove unnecessary break after return
2014-07-15 16:27:00 -07:00
802
net: set name_assign_type in alloc_netdev()
2014-07-15 16:12:48 -07:00
8021q
net: Always untag vlan-tagged traffic on input.
2014-08-11 12:16:51 -07:00
appletalk
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2014-07-16 14:09:34 -07:00
atm
atm: Convert pr_warning to pr_warn
2014-09-10 12:40:10 -07:00
ax25
net: Fix use after free by removing length arg from sk_data_ready callbacks.
2014-04-11 16:15:36 -04:00
batman-adv
batman-adv: Fix parameter order of hlist_add_behind
2014-08-16 19:19:08 -07:00
bluetooth
Bluetooth: Fix re-setting RPA as expired when deferring update
2014-09-12 18:34:25 +02:00
bridge
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2014-09-23 12:09:27 -04:00
caif
caif: remove unnecessary break after goto
2014-07-15 16:27:01 -07:00
can
can: add hash based access to single EFF frame filters
2014-05-19 09:38:24 +02:00
ceph
libceph: do not hard code max auth ticket len
2014-09-10 20:08:36 +04:00
core
net: introduce __skb_header_release()
2014-09-26 15:40:06 -04:00
dcb
dcbnl : Fix misleading dcb_app->priority explanation
2014-07-30 17:21:05 -07:00
dccp
inet: move ipv6only in sock_common
2014-07-01 23:46:21 -07:00
decnet
af_decnet: Use time_after_eq
2014-08-22 12:23:11 -07:00
dns_resolver
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2014-08-06 08:06:39 -07:00
dsa
net: dsa: add {get, set}_wol callbacks to slave devices
2014-09-22 14:41:23 -04:00
ethernet
net: Add function for parsing the header length out of linear ethernet frames
2014-09-05 17:47:02 -07:00
hsr
net/hsr: Remove left-over never-true conditional code.
2014-07-11 15:04:40 -07:00
ieee802154
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
2014-09-08 11:14:56 -04:00
ipv4
net: introduce __skb_header_release()
2014-09-26 15:40:06 -04:00
ipv6
net: Remove gso_send_check as an offload callback
2014-09-26 00:22:47 -04:00
ipx
net: Split sk_no_check into sk_no_check_{rx,tx}
2014-05-23 16:28:53 -04:00
irda
irda: Fix rd_frame control field initialization in irlap_send_rd_frame()
2014-08-13 20:05:52 -07:00
iucv
iucv: Convert pr_warning to pr_warn
2014-09-10 12:40:10 -07:00
key
af_key: remove unnecessary break after return
2014-07-15 16:27:00 -07:00
l2tp
l2tp: Refactor l2tp core driver to make use of the common UDP tunnel functions
2014-09-19 15:57:15 -04:00
lapb
net/lapb: re-send packets on timeout
2013-09-23 16:52:45 -04:00
llc
llc: remove noisy WARN from llc_mac_hdr_init
2014-01-28 18:01:32 -08:00
mac80211
Merge tag 'master-2014-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next
2014-09-26 15:39:24 -04:00
mac802154
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
2014-09-08 11:14:56 -04:00
mpls
net: Remove gso_send_check as an offload callback
2014-09-26 00:22:47 -04:00
netfilter
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
2014-09-10 12:46:32 -07:00
netlabel
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2014-08-06 09:38:14 -07:00
netlink
netlink: Annotate RCU locking for seq_file walker
2014-08-14 15:13:40 -07:00
netrom
net: set name_assign_type in alloc_netdev()
2014-07-15 16:12:48 -07:00
nfc
Merge tag 'master-2014-07-31' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next
2014-08-05 13:18:20 -07:00
openvswitch
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2014-09-23 12:09:27 -04:00
packet
net: Pass a "more" indication down into netdev_start_xmit() code paths.
2014-09-01 17:39:55 -07:00
phonet
net: set name_assign_type in alloc_netdev()
2014-07-15 16:12:48 -07:00
rds
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2014-06-12 14:27:40 -07:00
rfkill
net: rfkill: gpio: Fix clock status
2014-09-22 16:02:15 -04:00
rose
rose: use %*ph specifier
2014-09-07 16:07:25 -07:00
rxrpc
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2014-09-23 12:09:27 -04:00
sched
net: sched: use pinned timers
2014-09-26 00:26:48 -04:00
sctp
net/ipv4: bind ip_nonlocal_bind to current netns
2014-09-09 11:27:09 -07:00
sunrpc
NFS client updates for Linux 3.17
2014-08-13 18:13:19 -06:00
tipc
tipc: fix sparse warnings
2014-09-10 14:00:58 -07:00
unix
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2014-06-12 14:27:40 -07:00
vmw_vsock
vsock: Make transport the proto owner
2014-05-05 13:13:50 -04:00
wimax
wimax: remove dead code
2013-11-21 13:09:42 -05:00
wireless
Merge tag 'master-2014-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next
2014-09-26 15:39:24 -04:00
x25
net: Fix use after free by removing length arg from sk_data_ready callbacks.
2014-04-11 16:15:36 -04:00
xfrm
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2014-09-23 12:09:27 -04:00
compat.c
net: sendmsg: fix NULL pointer dereference
2014-07-29 12:20:22 -07:00
Kconfig
6lowpan: introduce new net/6lowpan directory
2014-07-12 01:53:30 +02:00
Makefile
6lowpan: introduce new net/6lowpan directory
2014-07-12 01:53:30 +02:00
nonet.c
…
socket.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2014-09-23 12:09:27 -04:00
sysctl_net.c
net: Update the sysctl permissions handler to test effective uid/gid
2013-10-07 15:57:56 -04:00