linux-kernel - Re: [PATCH v2 18/20] mips: csrc-r4k: Decrease r4k-clocksource rating if CPU

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Message-ID: <20200516115505.6ybwxuv2bsu2myry@mobilestation>
Date:   Sat, 16 May 2020 14:55:05 +0300
From:   Serge Semin <Sergey.Semin@...kalelectronics.ru>
To:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>
CC:     Serge Semin <fancer.lancer@...il.com>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Paul Burton <paulburton@...nel.org>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arnd Bergmann <arnd@...db.de>,
        Rob Herring <robh+dt@...nel.org>, <linux-pm@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        Vincenzo Frascino <vincenzo.frascino@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        <linux-mips@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 18/20] mips: csrc-r4k: Decrease r4k-clocksource rating
 if CPU_FREQ enabled

On Fri, May 15, 2020 at 11:06:47PM +0200, Thomas Bogendoerfer wrote:
> On Fri, May 15, 2020 at 10:48:27AM +0300, Serge Semin wrote:
> > Thomas,
> > Could you take a look at my comment below so I could proceed with the
> > patchset v3 development?
> 
> I can't help, but using r4k clocksource with changing frequency is
> probaly only usefull as a random generator. So IMHO the only two
> options are disabling it or implement what arch/x86/kernel/tsc.c does.

Then it's settled. I'll resend the series with csrc-r4k updated to have the
tsc-like design implemented.

-Sergey

> 
> Thomas.
> 
> -- 
> Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
> good idea.                                                [ RFC1925, 2.3 ]