net: dsa: User per-cpu 64-bit statistics

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During testing with a background iperf pushing 1Gbit/sec worth of
traffic and having both ifconfig and ethtool collect statistics, we
could see quite frequent deadlocks. Convert the often accessed DSA slave
network devices statistics to per-cpu 64-bit statistics to remove these
deadlocks and provide fast efficient statistics updates.

Fixes: f613ed665b ("net: dsa: Add support for 64-bit statistics")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Florian Fainelli 2017-08-03 21:33:27 -07:00 • committed by David S. Miller

parent eaf6dc0338

commit 5f6b4e14ca

3 changed files with 59 additions and 25 deletions

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10

net/dsa/dsa.c

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2

net/dsa/dsa_priv.h

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70

net/dsa/slave.c

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