From: Eric Dumazet <eric.duma...@gmail.com>
Date: Sat, 16 May 2015 09:50:11 -0700
> Maybe the difference between 3.15 and 4.1 is not coming from
> rhashtable/netlink but other core stuff, like mutex code.
>
> The workload is largely dominated by mutex acquisition anyway.
Hmmm, the only commit that sticks out for me in that time-frame is:
commit 90631822c5d307b5410500806e8ac3e63928aa3e
Author: Jason Low <jason.l...@hp.com>
Date: Mon Jul 14 10:27:49 2014 -0700
locking/spinlocks/mcs: Convert osq lock to atomic_t to reduce overhead
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