linux-kernel - Re: [PATCH 8/8] LinuxPPS: pps_gen_parport: Add check for bad clocksource.

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Message-ID: <84a7df19-109a-7ebd-b630-a6e4f424cbd2@enneenne.com>
Date:   Sat, 4 Mar 2017 14:25:20 +0100
From:   Rodolfo Giometti <giometti@...eenne.com>
To:     Alexander Gerasiov <gq@...msu.su>
Cc:     Andrey Drobyshev <immortalguardian1@...il.com>,
        linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 8/8] LinuxPPS: pps_gen_parport: Add check for bad
 clocksource.

On 03/04/17 10:19, Alexander Gerasiov wrote:
> Hello Rodolfo,
>
> I should say, that I found this solution is not the best. For example on
> high speed PCs (I think over 3GHz) 5 iteration is not enough and module
> stops working after several hours. That makes it not user-friendly,
> cause user had to calibrate and set failure_iterations manually.
>
> It would be better to use pre-measured loops_per_jiffy (from delay.h)
> some way.

I see... however I cannot test the patch so if you tried it and you noticed 
these issues we should consider to add it but with the experimental warning?

Ciao,

Rodolfo

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