From: Lukas Wunner <lukas@wunner.de>
To: Ferry Toth <fntoth@gmail.com>
Cc: Steve Glendinning <steve.glendinning@shawell.net>,
UNGLinuxDriver@microchip.com, Oliver Neukum <oneukum@suse.com>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
netdev@vger.kernel.org, linux-usb@vger.kernel.org,
Andre Edich <andre.edich@microchip.com>,
Oleksij Rempel <o.rempel@pengutronix.de>,
Martyn Welch <martyn.welch@collabora.com>,
Gabriel Hojda <ghojda@yo2urs.ro>,
Christoph Fritz <chf.fritz@googlemail.com>,
Lino Sanfilippo <LinoSanfilippo@gmx.de>,
Philipp Rosenberger <p.rosenberger@kunbus.com>,
Heiner Kallweit <hkallweit1@gmail.com>,
Andrew Lunn <andrew@lunn.ch>,
Russell King <linux@armlinux.org.uk>
Subject: Re: [PATCH net-next 0/7] Polling be gone on LAN95xx
Date: Tue, 3 May 2022 10:26:12 +0200 [thread overview]
Message-ID: <20220503082612.GA21515@wunner.de> (raw)
In-Reply-To: <a9fcc952-a55f-1eae-c584-d58644bae00d@gmail.com>
On Mon, May 02, 2022 at 10:33:06PM +0200, Ferry Toth wrote:
> Op 27-04-2022 om 07:48 schreef Lukas Wunner:
> > Do away with link status polling on LAN95XX USB Ethernet
> > and rely on interrupts instead, thereby reducing bus traffic,
> > CPU overhead and improving interface bringup latency.
>
> Tested-by: Ferry Toth <fntoth@gmail.com> (Intel Edison-Arduino)
Thank you!
> While testing I noted another problem. I have "DMA-API: debugging enabled by
> kernel config" and this (I guess) shows me before and after the patches:
>
> ------------[ cut here ]------------
> DMA-API: xhci-hcd xhci-hcd.1.auto: cacheline tracking EEXIST, overlapping
> mappings aren't supported
That is under investigation here:
https://bugzilla.kernel.org/show_bug.cgi?id=215740
It's apparently a long-standing bug in the USB core which was exposed
by a new WARN() check introduced in 5.14.
Thanks,
Lukas
next prev parent reply other threads:[~2022-05-03 8:26 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-27 5:48 [PATCH net-next 0/7] Polling be gone on LAN95xx Lukas Wunner
2022-04-27 5:48 ` [PATCH net-next 1/7] usbnet: Run unregister_netdev() before unbind() again Lukas Wunner
2022-04-27 7:44 ` Oliver Neukum
2022-04-27 7:45 ` Oliver Neukum
2022-04-27 5:48 ` [PATCH net-next 2/7] usbnet: smsc95xx: Don't clear read-only PHY interrupt Lukas Wunner
2022-04-27 5:48 ` [PATCH net-next 3/7] usbnet: smsc95xx: Don't reset PHY behind PHY driver's back Lukas Wunner
2022-04-27 5:48 ` [PATCH net-next 4/7] usbnet: smsc95xx: Avoid link settings race on interrupt reception Lukas Wunner
2022-04-27 11:50 ` Andrew Lunn
2022-04-27 5:48 ` [PATCH net-next 5/7] usbnet: smsc95xx: Forward PHY interrupts to PHY driver to avoid polling Lukas Wunner
2022-04-27 12:03 ` Andrew Lunn
2022-04-27 12:26 ` Andrew Lunn
2022-04-27 5:48 ` [PATCH net-next 6/7] net: phy: smsc: Cache interrupt mask Lukas Wunner
2022-04-27 12:14 ` Andrew Lunn
2022-04-27 12:51 ` Lukas Wunner
2022-04-27 5:48 ` [PATCH net-next 7/7] net: phy: smsc: Cope with hot-removal in interrupt handler Lukas Wunner
2022-04-27 7:46 ` Oliver Neukum
2022-04-27 12:37 ` [PATCH net-next 0/7] Polling be gone on LAN95xx Oleksij Rempel
2022-04-28 12:19 ` Lukas Wunner
2022-05-02 20:33 ` Ferry Toth
2022-05-03 8:26 ` Lukas Wunner [this message]
2022-05-03 14:26 ` Ferry Toth
2022-05-04 8:15 ` Lukas Wunner
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