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540eb7bf0b
kernel-ark/net
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Alexander Duyck 540eb7bf0b net: Update alloc frag to reduce get/put page usage and recycle pages 
This patch is meant to help improve performance by reducing the number of
locked operations required to allocate a frag on x86 and other platforms.
This is accomplished by using atomic_set operations on the page count
instead of calling get_page and put_page.  It is based on work originally
provided by Eric Dumazet.

In addition it also helps to reduce memory overhead when using TCP.  This
is done by recycling the page if the only holder of the frame is the
netdev_alloc_frag call itself.  This can occur when skb heads are stolen by
either GRO or TCP and the driver providing the packets is using paged frags
to store all of the data for the packets.

Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-13 05:48:36 -07:00
..
9p net: Fix (nearly-)kernel-doc comments for various functions 2012-07-10 23:13:45 -07:00
802 tokenring: delete all remaining driver support 2012-05-15 20:23:16 -04:00
8021q net: Fix memory leak - vlan_info struct 2012-07-10 23:32:27 -07:00
appletalk net: Fix (nearly-)kernel-doc comments for various functions 2012-07-10 23:13:45 -07:00
atm net: Remove casts to same type 2012-06-04 11:45:11 -04:00
ax25 small cleanup in ax25_addr_parse() 2012-07-09 00:16:16 -07:00
batman-adv Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-07-10 23:56:33 -07:00
bluetooth Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless 2012-06-29 12:07:37 -04:00
bridge net: Add dummy dst_ops->redirect method where needed. 2012-07-12 00:39:24 -07:00
caif Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-06-28 17:37:00 -07:00
can can: gw: Remove pointless casts 2012-07-10 22:36:17 +02:00
ceph net: Fix non-kernel-doc comments with kernel-doc start marker 2012-07-10 23:13:45 -07:00
core net: Update alloc frag to reduce get/put page usage and recycle pages 2012-07-13 05:48:36 -07:00
dcb net: Fix non-kernel-doc comments with kernel-doc start marker 2012-07-10 23:13:45 -07:00
dccp net: Remove checks for dst_ops->redirect being NULL. 2012-07-12 00:41:25 -07:00
decnet net: Add dummy dst_ops->redirect method where needed. 2012-07-12 00:39:24 -07:00
dns_resolver Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2012-05-21 20:27:36 -07:00
dsa
ethernet net: Fix (nearly-)kernel-doc comments for various functions 2012-07-10 23:13:45 -07:00
ieee802154 6lowpan: rework fragment-deleting routine 2012-07-12 07:54:46 -07:00
ipv4 ipv4: Remove tb_peers from fib_table. 2012-07-12 09:39:28 -07:00
ipv6 net: Remove checks for dst_ops->redirect being NULL. 2012-07-12 00:41:25 -07:00
ipx ipx: Remove spurious NULL checking in ipx_ioctl(). 2012-05-19 00:51:04 -04:00
irda net: Remove casts to same type 2012-06-04 11:45:11 -04:00
iucv net: remove skb_orphan_try() 2012-06-15 15:30:15 -07:00
key
l2tp net: l2tp_eth: provide tx_dropped counter 2012-06-29 00:52:32 -07:00
lapb lapb: Neaten debugging 2012-05-17 18:45:20 -04:00
llc net: Fix (nearly-)kernel-doc comments for various functions 2012-07-10 23:13:45 -07:00
mac80211 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-07-10 23:56:33 -07:00
mac802154 mac802154: sparse warnings: make symbols static 2012-07-12 07:54:45 -07:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-07-10 23:56:33 -07:00
netlabel
netlink net: Fix (nearly-)kernel-doc comments for various functions 2012-07-10 23:13:45 -07:00
netrom
nfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-07-10 23:56:33 -07:00
openvswitch Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-05-16 22:17:37 -04:00
packet net: added support for 40GbE link. 2012-06-27 15:42:24 -07:00
phonet net: remove my future former mail address 2012-06-17 16:29:38 -07:00
rds net: Fix (nearly-)kernel-doc comments for various functions 2012-07-10 23:13:45 -07:00
rfkill rfkill: Add the capability to switch all devices of all type in __rfkill_switch_all(). 2012-06-06 15:18:17 -04:00
rose
rxrpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-07-10 23:56:33 -07:00
sched net: sched: add ipset ematch 2012-07-12 07:54:46 -07:00
sctp net: Remove checks for dst_ops->redirect being NULL. 2012-07-12 00:41:25 -07:00
sunrpc net: Fix (nearly-)kernel-doc comments for various functions 2012-07-10 23:13:45 -07:00
tipc net: Fix non-kernel-doc comments with kernel-doc start marker 2012-07-10 23:13:45 -07:00
unix unix_diag: Do not use RTA_PUT() macros 2012-06-27 15:36:43 -07:00
wanrouter net/wanrouter: Deprecate and schedule for removal 2012-05-24 16:22:53 -04:00
wimax
wireless Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem 2012-06-29 12:42:14 -04:00
x25 net: Fix (nearly-)kernel-doc comments for various functions 2012-07-10 23:13:45 -07:00
xfrm xfrm: No need to copy generic neighbour pointer. 2012-07-05 02:42:00 -07:00
compat.c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2012-05-21 20:27:36 -07:00
Kconfig net: drop NET dependency from HAVE_BPF_JIT 2012-05-21 12:50:12 -07:00
Makefile econet: remove ancient bug ridden protocol 2012-05-18 01:35:08 -04:00
nonet.c
socket.c Merge branch 'for-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2012-05-22 17:37:47 -07:00
sysctl_net.c net: delete all instances of special processing for token ring 2012-05-15 20:14:35 -04:00