On Mon, Jun 10, 2013 at 10:29 AM, Eric Dumazet wrote:
> On Mon, 2013-06-10 at 11:39 +0300, Eliezer Tamir wrote:
>> Adds an ndo_ll_poll method and the code that supports it.
>> This method can be used by low latency applications to busy-poll
>> Ethernet device queues directly from the socket code.
>> sysctl_net_ll_poll controls how many microseconds to poll.
>> Default is zero (disabled).
>> Individual protocol support will be added by subsequent patches.
>>
>> Signed-off-by: Alexander Duyck
>> Signed-off-by: Jesse Brandeburg
>> Signed-off-by: Eliezer Tamir
>> ---
>>
>> Documentation/sysctl/net.txt |7 ++
>> include/linux/netdevice.h|3 +
>> include/linux/skbuff.h |8 ++
>> include/net/ll_poll.h| 148
>> ++
>> include/net/sock.h |4 +
>> include/uapi/linux/snmp.h|1
>> net/Kconfig | 12 +++
>> net/core/skbuff.c|4 +
>> net/core/sock.c |6 ++
>> net/core/sysctl_net_core.c | 10 +++
>> net/ipv4/proc.c |1
>> net/socket.c |6 ++
>> 12 files changed, 208 insertions(+), 2 deletions(-)
>> create mode 100644 include/net/ll_poll.h
>
> Acked-by: Eric Dumazet
>
Tested-by: Willem de Bruijn
Per Eliezer's request, I applied v10 to a small set of workloads
(netperf tcp_rr, udp_rr, 100x tcp_rr, 100x udp_rr and a poll()-based
tcp rr) for some functional testing.
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