Subject: [PATCH v3 net-next 0/4] net: low latency sockets follow ups

From: Eliezer Tamir <[email-masked]>
Date: Thu, 13 Jun 2013 17:46:13 +0300

David,

Here are three clean up patches, plus one that adds a socket option for LLS.

Patch 1 converts low latency sockets to sched_clock.
Patch 2 removes the config menu for NET_LL_RX_POLL and defaults to y.
Patch 3 converts sysctl_net_ll_poll into an unsigned int
Patch 4 adds an SO_LL socket option to allow per-socket control of busy polling.

I will reply to this thread with a patch to sockperf that enables
the socket option. (unchanged from v2)

Again, thanks to everyone for their comments.

-Eliezer

Change log:

v3
- Suggested by David Miller and Stephen Hemminger:
  added a patch to covert from get_cycles() to sched_clock(),
  remove dependency on X86_TSC.
- Suggested by Eric Dumazet:
  un-exported sysctl_net_ll_poll since for now it's not needed in modules.

v2
- added a patch to convert sysctl_net_ll_poll into an unsigned int.
- suggested by Eric Dimazet: treat sk_ll_usec as a u_int rather than a u_long.
- suggested by Ben Huchings: allow unprivileged user to decrease SO_LL value,
  correct return value when operation is not allowed.

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