linux/include
Eric Dumazet c84d949057 udp: copy skb->truesize in the first cache line
In UDP RX handler, we currently clear skb->dev before skb
is added to receive queue, because device pointer is no longer
available once we exit from RCU section.

Since this first cache line is always hot, lets reuse this space
to store skb->truesize and thus avoid a cache line miss at
udp_recvmsg()/udp_skb_destructor time while receive queue
spinlock is held.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-09 22:12:21 -05:00
..
acpi Merge branches 'acpica-fixes', 'acpi-cppc-fixes' and 'acpi-tools-fixes' 2016-11-18 21:34:42 +01:00
asm-generic default exported asm symbols to zero 2016-12-02 08:51:22 -08:00
clocksource
crypto crypto: drbg - prevent invalid SG mappings 2016-11-30 19:46:44 +08:00
drm drm: Don't force all planes to be added to the state due to zpos 2016-10-26 18:48:05 +02:00
dt-bindings dt-bindings: net: add EEE capability constants 2016-11-29 19:38:31 -05:00
keys
kvm
linux udp: copy skb->truesize in the first cache line 2016-12-09 22:12:21 -05:00
math-emu
media Linux 4.8 2016-10-05 16:43:53 -03:00
memory
misc
net net: do not read sk_drops if application does not care 2016-12-08 13:30:22 -05:00
pcmcia
ras
rdma Merge of primary rdma-core code for 4.9 2016-10-09 17:04:33 -07:00
rxrpc
scsi
soc powerpc updates for 4.9 #2 2016-10-14 11:07:42 -07:00
sound
target target: Make EXTENDED_COPY 0xe4 failure return COPY TARGET DEVICE NOT REACHABLE 2016-10-19 21:22:32 -07:00
trace net/phy: add trace events for mdio accesses 2016-11-24 11:55:43 -05:00
uapi bpf: xdp: Allow head adjustment in XDP prog 2016-12-08 14:25:13 -05:00
video fbdev changes for 4.9 2016-10-12 11:01:37 -07:00
xen xen: features and fixes for 4.9-rc0 2016-10-06 11:19:10 -07:00
Kbuild