From: David Miller <davem@davemloft.net>
To: andrew@lunn.ch
Cc: netdev@vger.kernel.org, vivien.didelot@savoirfairelinux.com
Subject: Re: [PATCH net-next 0/2] net: dsa: mv88e6xxx: Improve PTP access latency
Date: Fri, 16 Feb 2018 15:37:34 -0500 (EST) [thread overview]
Message-ID: <20180216.153734.818833240004820510.davem@davemloft.net> (raw)
In-Reply-To: <1518701915-14346-1-git-send-email-andrew@lunn.ch>
From: Andrew Lunn <andrew@lunn.ch>
Date: Thu, 15 Feb 2018 14:38:33 +0100
> PTP needs to retrieve the hardware timestamps from the switch device
> in a low latency manor. However ethtool -S and bridge fdb show can
> hold the switch register access mutex for a long time. These patches
> changes the reading the statistics and the ATU so that the mutex is
> released and taken again between each statistic or ATU entry. The PTP
> code can then interleave its access to the hardware, keeping its
> latency low.
Series applied, thanks Andrew.
prev parent reply other threads:[~2018-02-16 20:37 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-15 13:38 [PATCH net-next 0/2] net: dsa: mv88e6xxx: Improve PTP access latency Andrew Lunn
2018-02-15 13:38 ` [PATCH net-next 1/2] net: dsa: mv88e6xxx: Release mutex between each statistics read Andrew Lunn
2018-02-15 13:38 ` [PATCH net-next 2/2] net: dsa: mv88e6xxx: Release mutex between each ATU read Andrew Lunn
2018-02-16 20:37 ` David Miller [this message]
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