Re: [Jack-Devel] jack is broken on ARM without bogomips

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DateFri, 17 Jan 2014 07:22:07 -0800
From Grant <[hidden] at gmail dot com>
ToPeter Nelson <[hidden] at fuzzle dot org>
CcJACK <[hidden] at lists dot jackaudio dot org>
In-Reply-ToPeter Nelson Re: [Jack-Devel] jack is broken on ARM without bogomips
Follow-UpPeter Nelson Re: [Jack-Devel] jack is broken on ARM without bogomips
>> bogomips was removed from /proc/cpuinfo on ARM:
>>
>> http://lists.infradead.org/pipermail/linux-arm-kernel/2013-June/178645.html
>>
>> which breaks jackd:
>>
>> https://github.com/archlinuxarm/PKGBUILDs/issues/601
>>
>> I tried the latest jack1 and jack2 from git but neither work on ARM
>> because of this.
>
> jack1 (at least) can use different clock sources. I'll assume there's no
> HPET on ARM but "--clocksource system" should work, I think.
>
> [ --clocksource OR -c [ c(ycle) | h(pet) | s(ystem) ]

I think jackd checks (and fails without) "cpu MHz" regardless of clocksource:

# jackd -d net -cs
jackd 0.124.0
Copyright 2001-2009 Paul Davis, Stephane Letz, Jack O'Quinn, Torben
Hohn and others.
jackd comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details

JACK compiled with System V SHM support.
FATAL: cannot locate cpu MHz in /proc/cpuinfo
#

- Grant
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