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d43a396af0
linux/drivers/net
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LEROY Christophe d43a396af0 net: fs_enet: Add NAPI TX 
When using a MPC8xx as a router, 'perf' shows a significant time spent in
fs_enet_interrupt() and fs_enet_start_xmit().
'perf annotate' shows that the time spent in fs_enet_start_xmit is indeed spent
between spin_unlock_irqrestore() and the following instruction, hence in
interrupt handling. This is due to the TX complete interrupt that fires after
each transmitted packet.
This patch modifies the handling of TX complete to use NAPI.
With this patch, my NAT router offers a throughput improved by 21%

Original performance:

[root@localhost tmp]# scp toto pgs:/tmp
toto                                          100%  256MB   2.8MB/s   01:31

Performance with the patch:

[root@localhost tmp]# scp toto pgs:/tmp
toto                                          100%  256MB   3.4MB/s   01:16

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-08 16:01:41 -04:00
..
appletalk net: better IFF_XMIT_DST_RELEASE support 2014-10-07 13:22:11 -04:00
arcnet ARCNET: enable eae arcnet card support 2014-09-29 14:36:26 -04:00
bonding net: better IFF_XMIT_DST_RELEASE support 2014-10-07 13:22:11 -04:00
caif net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
can drivers/net/can/Kconfig: Let CAN_AT91 depend on HAS_IOMEM 2014-10-03 15:52:03 -07:00
cris eth_v10: remove unnecessary break after return 2014-07-20 21:29:49 -07:00
dsa drivers/net/dsa/Kconfig: Let NET_DSA_BCM_SF2 depend on HAS_IOMEM 2014-10-03 15:52:04 -07:00
ethernet net: fs_enet: Add NAPI TX 2014-10-08 16:01:41 -04:00
fddi defxx: DEFEA's ESIC port I/O decoding cleanup 2014-09-28 17:22:10 -04:00
hamradio net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
hippi PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
hyperv Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-10-02 11:25:43 -07:00
ieee802154 mrf24j40: use pr_* / dev_* instead of printk() 2014-09-24 14:14:42 +02:00
irda drivers/net/irda/Kconfig: Let SH_IRDA depend on HAS_IOMEM 2014-10-03 15:52:04 -07:00
phy net: phy: adjust fixed_phy_register() return value 2014-10-07 13:06:45 -04:00
plip
ppp net: better IFF_XMIT_DST_RELEASE support 2014-10-07 13:22:11 -04:00
slip net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
team net: better IFF_XMIT_DST_RELEASE support 2014-10-07 13:22:11 -04:00
usb r8152: nway reset after setting eee 2014-10-06 17:51:38 -04:00
vmxnet3 VMXNET3: Check for map error in vmxnet3_set_mc 2014-09-05 11:50:39 -07:00
wan net: better IFF_XMIT_DST_RELEASE support 2014-10-07 13:22:11 -04:00
wimax net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
wireless Merge tag 'master-2014-10-02' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next 2014-10-05 21:34:39 -04:00
xen-netback xen-netback: move netif_napi_add before binding interrupt 2014-08-25 17:31:42 -07:00
dummy.c net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
eql.c net: better IFF_XMIT_DST_RELEASE support 2014-10-07 13:22:11 -04:00
ifb.c net: better IFF_XMIT_DST_RELEASE support 2014-10-07 13:22:11 -04:00
Kconfig openvswitch: fix a compilation error when CONFIG_INET is not setW! 2014-10-07 00:10:49 -04:00
LICENSE.SRC
loopback.c net: better IFF_XMIT_DST_RELEASE support 2014-10-07 13:22:11 -04:00
macvlan.c net: better IFF_XMIT_DST_RELEASE support 2014-10-07 13:22:11 -04:00
macvtap.c macvtap: Fix race between device delete and open. 2014-09-26 15:20:26 -04:00
Makefile net: reduce USB network driver config options. 2014-08-05 16:48:59 -07:00
mdio.c
mii.c
netconsole.c
nlmon.c
ntb_netdev.c
rionet.c
sb1000.c
Space.c
sungem_phy.c sungem: Fix global namespace pollution of phy accessors. 2014-08-27 23:07:12 -07:00
tun.c net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
veth.c net: rtnetlink - make create_link take name_assign_type 2014-07-15 16:13:07 -07:00
virtio_net.c virtio_net: pass well-formed sgs to virtqueue_add_*() 2014-09-13 12:50:46 -04:00
vxlan.c net: better IFF_XMIT_DST_RELEASE support 2014-10-07 13:22:11 -04:00
xen-netfront.c xen-netfront: Fix handling packets on compound pages with skb_linearize 2014-08-11 14:46:41 -07:00