From: Andrew Lunn <andrew@lunn.ch>
To: Jakub Kicinski <kuba@kernel.org>
Cc: George McCollister <george.mccollister@gmail.com>,
Vladimir Oltean <olteanv@gmail.com>,
Vivien Didelot <vivien.didelot@gmail.com>,
Florian Fainelli <f.fainelli@gmail.com>,
"David S . Miller" <davem@davemloft.net>,
netdev@vger.kernel.org,
"open list:OPEN FIRMWARE AND..." <devicetree@vger.kernel.org>
Subject: Re: [PATCH net-next v2 2/3] net: dsa: add Arrow SpeedChips XRS700x driver
Date: Sat, 28 Nov 2020 00:30:48 +0100 [thread overview]
Message-ID: <20201127233048.GB2073444@lunn.ch> (raw)
In-Reply-To: <20201127133753.4cf108cb@kicinski-fedora-pc1c0hjn.DHCP.thefacebook.com>
> If there is a better alternative I'm all ears but having /proc and
> ifconfig return zeros for error counts while ip link doesn't will lead
> to too much confusion IMO. While delayed update of stats is a fact of
> life for _years_ now (hence it was backed into the ethtool -C API).
How about dev_seq_start() issues a netdev notifier chain event, asking
devices which care to update their cached rtnl_link_stats64 counters.
They can decide if their cache is too old, and do a blocking read for
new values.
Once the notifier has completed, dev_seq_start() can then
rcu_read_lock() and do the actual collection of stats from the drivers
non-blocking.
Andrew
next prev parent reply other threads:[~2020-11-28 0:21 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-25 19:37 [PATCH net-next v2 0/3] Arrow SpeedChips XRS700x DSA Driver George McCollister
2020-11-25 19:37 ` [PATCH net-next v2 1/3] dsa: add support for Arrow XRS700x tag trailer George McCollister
2020-11-25 20:34 ` Andrew Lunn
2020-11-26 13:50 ` Vladimir Oltean
2020-11-26 14:01 ` Andrew Lunn
2020-11-26 14:28 ` Vladimir Oltean
2020-11-25 20:34 ` Andrew Lunn
2020-11-26 1:31 ` Florian Fainelli
2020-11-25 19:37 ` [PATCH net-next v2 2/3] net: dsa: add Arrow SpeedChips XRS700x driver George McCollister
2020-11-26 1:42 ` Jakub Kicinski
2020-11-26 2:25 ` George McCollister
2020-11-26 13:24 ` Vladimir Oltean
2020-11-26 17:56 ` Vladimir Oltean
2020-11-26 19:07 ` George McCollister
2020-11-26 22:05 ` Vladimir Oltean
2020-11-27 18:35 ` Jakub Kicinski
[not found] ` <CAFSKS=MAdnR2jzmkQfTnSQZ7GY5x5KJE=oeqPCQdbZdf5n=4ZQ@mail.gmail.com>
2020-11-27 19:50 ` Vladimir Oltean
2020-11-27 20:58 ` George McCollister
2020-11-27 21:37 ` Jakub Kicinski
2020-11-27 22:42 ` Vladimir Oltean
2020-11-27 23:21 ` Vladimir Oltean
2020-11-27 23:51 ` Jakub Kicinski
2020-11-27 23:30 ` Andrew Lunn [this message]
2020-11-27 23:39 ` Vladimir Oltean
2020-11-27 23:56 ` Jakub Kicinski
2020-11-28 1:45 ` Vladimir Oltean
2020-11-28 0:02 ` Vladimir Oltean
2020-11-28 0:39 ` Andrew Lunn
2020-11-28 1:41 ` Vladimir Oltean
2020-11-28 2:15 ` Jakub Kicinski
2020-11-30 16:52 ` George McCollister
2020-11-30 23:50 ` Vladimir Oltean
2020-11-30 23:58 ` George McCollister
2020-12-01 0:19 ` Vladimir Oltean
2020-11-27 20:47 ` Andrew Lunn
2020-11-27 21:13 ` Jakub Kicinski
2020-11-27 21:23 ` Vladimir Oltean
2020-11-27 21:36 ` Andrew Lunn
2020-12-02 0:28 ` Vladimir Oltean
2020-12-02 0:54 ` Jakub Kicinski
2020-11-27 22:03 ` Jakub Kicinski
2020-11-27 21:32 ` Andrew Lunn
2020-11-27 22:14 ` Jakub Kicinski
2020-11-27 22:46 ` Andrew Lunn
2020-11-25 19:37 ` [PATCH net-next v2 3/3] dt-bindings: net: dsa: add bindings for xrs700x switches George McCollister
2020-11-26 1:30 ` Florian Fainelli
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