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Date:      Mon, 24 Aug 2015 01:41:43 +0200 (CEST)
From:      Andreas Schwarz <freebsd.asc@strcmp.org>
To:        freebsd-arm@FreeBSD.org
Subject:   Re: DWC OTG TX path optimisation for 11-current
Message-ID:  <46ce372c895.20050775@mail.schwarzes.net>
In-Reply-To: <55CF31A1.5080205@selasky.org>
References:  <55A7D8CE.4020809@selasky.org> <CAHNYxxMp9jGDbV-5=-cE6daR-O3eN5pdvO1s-=QfX=A9XYqYmA@mail.gmail.com> <55B23276.8090703@selasky.org> <CAHNYxxNc9uB62hHEv1PM9PcsGgUs=zsvNgatqLD0p%2BiiDA3Aiw@mail.gmail.com> <55B73113.2020308@selasky.org> <CAFHCsPVaPZpqXLS7OApa=Xz5VLnLjVpV5dYV8Pn2uHh1Lcz7Tg@mail.gmail.com> <55B8AB76.7030603@selasky.org> <CAFHCsPUMaYEwJsaGUFuw9yZi_5bmraSBsOYpRWvSeuebpXBJUA@mail.gmail.com> <55B8B297.1010008@selasky.org> <CAFHCsPVGLs8j6LAV%2Bg4rP_ueTOd8pUOupYFGvmgC3XGcJC720Q@mail.gmail.com> <20150729154516.GH78154@funkthat.com> <55B8F5EC.2050908@selasky.org> <46ad096c958.1a82a175@mail.schwarzes.net> <55B9C3E2.5040501@selasky.org> <46ae815c7c3.447237c8@mail.schwarzes.net> <46aece00b53.3c1cdc1f@mail.schwarzes.net> <55BB2A5F.9000502@selasky.org> <46baa16c4ce.6efd29ef@mail.schwarzes.net> <55CF31A1.5080205@selasky.org>

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On 15.08.15, Hans Petter Selasky wrote:
> On 08/09/15 05:09, Andreas Schwarz wrote:
>> On 31.07.15, Hans Petter Selasky wrote:
>>
>> I've applied the patch to r286117 and started to build the world in a
>> loop until the problem occur. See the output below. After the problem
>> was there (last lines), no further debug output was generated by your
>> patch.
>
> Can you re-test the latest 11-current after:
>
> https://svnweb.freebsd.org/changeset/base/286802

I made an extensive test the whole last week. I updated the system to 
r286833 and started to build the world in a loop. 

root@pizelot:/usr/src # cat loop_build.sh
#!/bin/sh

while true
do
  make cleandir
  make -j4 kernel-toolchain
  make -j4 buildkernel
  make -j4 buildworld
  date >> loop_build.log
done


I've tested two kernels, a custom kernel with INVARIANTS disabled and the default 
RPI2 kernel.

With both kernels I was not able to reproduce the initial problem. Nevertheless,
both attempts end with a crash and reboot (after several loops). The custom kernel 
crash after one day, the default RPI2 kernel after 5 days and (6 rounds completed). 
I've no further data related to these crashes, I don't think that it has to do with 
with our problem.

The used SD Card was a "Samsung SDHC 32 GB C10 UHS-1 MB-MGBGB".

-asc




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