linux/include
Paolo Abeni 0a463c78d2 udp: avoid a cache miss on dequeue
Since UDP no more uses sk->destructor, we can clear completely
the skb head state before enqueuing. Amend and use
skb_release_head_state() for that.

All head states share a single cacheline, which is not
normally used/accesses on dequeue. We can avoid entirely accessing
such cacheline implementing and using in the UDP code a specialized
skb free helper which ignores the skb head state.

This saves a cacheline miss at skb deallocation time.

v1 -> v2:
  replaced secpath_reset() with skb_release_head_state()

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-12 10:01:29 -04:00
..
acpi More ACPI updates for v4.12-rc1 2017-05-10 09:35:42 -07:00
asm-generic Kbuild UAPI header export updates for v4.12 2017-05-10 20:45:36 -07:00
clocksource
crypto Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2017-05-03 08:50:52 -07:00
drm drm/dp: start a DPCD based DP sink/branch device quirk database 2017-05-29 13:43:26 +03:00
dt-bindings Sort of on the quieter side this time, which is probably due more 2017-05-10 13:38:18 -07:00
keys
kvm KVM: arm/arm64: Fix bug when registering redist iodevs 2017-05-18 11:18:12 +02:00
linux udp: avoid a cache miss on dequeue 2017-06-12 10:01:29 -04:00
math-emu
media [media] cec: rename MEDIA_CEC_NOTIFIER to CEC_NOTIFIER 2017-06-04 15:23:35 -03:00
memory
misc
net Ipvlan should return an error when an address is already in use. 2017-06-09 12:26:07 -04:00
pcmcia
ras
rdma RDMA/SA: Fix kernel panic in CMA request handler flow 2017-06-01 17:20:14 -04:00
rxrpc rxrpc: Implement service upgrade 2017-06-05 14:30:49 +01:00
scsi Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2017-05-12 11:44:13 -07:00
soc net/wan/fsl_ucc_hdlc: add hdlc-bus support 2017-05-18 10:28:39 -04:00
sound ASoC: Updates for v4.12 2017-05-02 08:25:25 +02:00
target iscsi-target: Fix initial login PDU asynchronous socket close OOPs 2017-05-31 15:12:31 -07:00
trace rxrpc: Add service upgrade support for client connections 2017-06-05 14:30:49 +01:00
uapi bpf: add bpf_set_hash helper for tc progs 2017-06-10 19:05:47 -04:00
video uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
xen xen: Implement EFI reset_system callback 2017-05-02 12:06:50 +02:00