linux-kernel - Re: ARM imx.6 SATA speed regression

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Message-ID: <CANOoOjv-3TnyQfWz-tGOfSNcBvi-GU29TGeEuvAD4ksRHW4+Og@mail.gmail.com>
Date:   Tue, 7 Feb 2017 15:45:55 +0000
From:   Dan MacDonald <allcoms@...il.com>
To:     Fabio Estevam <fabio.estevam@....com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Gary Bisson <gary.bisson@...ndarydevices.com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "tj@...nel.org" <tj@...nel.org>,
        "festevam@...il.com" <festevam@...il.com>
Subject: Re: ARM imx.6 SATA speed regression

This is one of the cross-compilation guides I tried and failed to get to work.

https://archlinuxarm.org/wiki/Distcc_Cross-Compiling

It's been a year or two since I last tried to get distcc working. I
followed all those instructions but packages would only ever compile
locally. I can't remember what other guides I tried but that one was
the most directly relevant and most likely to work as I use Arch on
all my machines, x86 and ARM.

On Tue, Feb 7, 2017 at 3:18 PM, Dan MacDonald <allcoms@...il.com> wrote:
> Hi Fabio
>
> I've never used bisect before and I have thusfar failed to get ARM
> cross-compilation to work so I'm a bit wary of having to spend several
> days rebuilding Linux several times on my board.
>
> I think the first thing I need to do is to see what other archived
> Arch kernel packages I can get - hopefully I can find packages for
> 4.9.1, 4.9.2 etc. I would imagine that if I can find the stable
> release post 4.9.0 where imx6 SATA speed took a nosedive, that will
> make bisecting much faster.
>
> If anyone has an easy to follow, known working guide to setting up
> cross-compilation from amd64 -> armv7h, that would be massively
> helpful as none of the ones I have tried in the past have worked.
>
> Thanks
>
> On Tue, Feb 7, 2017 at 2:58 PM, Fabio Estevam <fabio.estevam@....com> wrote:
>> [Sorry for the top-post]
>>
>>
>> Hi Dan,
>>
>>
>> Could you run 'git bisect' between kernel 4.9.0 and 4.9.8 to understand
>> where this performance regression come from?
>>
>> ________________________________
>> From: Dan MacDonald <allcoms@...il.com>
>> Sent: Tuesday, February 7, 2017 12:31:10 PM
>> To: linux-kernel@...r.kernel.org
>> Cc: Gary Bisson; Fabio Estevam; shawnguo@...nel.org; tj@...nel.org
>> Subject: Re: ARM imx.6 SATA speed regression
>>
>> (Fake) Reply to CC in relevant people.