linux-kernel - Re: [PATCH 4/7] net: dsa: b53: Add PHC clock support

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Date:   Thu, 4 Nov 2021 10:49:44 -0700
From:   Richard Cochran <richardcochran@...il.com>
To:     Martin Kaistra <martin.kaistra@...utronix.de>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        John Stultz <john.stultz@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Stephen Boyd <sboyd@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Marc Kleine-Budde <mkl@...gutronix.de>,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH 4/7] net: dsa: b53: Add PHC clock support

On Thu, Nov 04, 2021 at 10:28:43AM -0700, Richard Cochran wrote:
> Instead of generic work, consider implementing
> ptp_clock_info::do_aux_work instead.
> 
> The advantage is that you get a named kernel thread that can be given
> scheduling priority administratively.

I see you are using do_aux_work in Patch 6.  You could use the kthread
for both overflow avoidance and transmit time stamps.

> Thanks,
> Richard