Re: liburcu: debian sparc fail to configure

Re: liburcu: debian sparc fail to configure

[Mathieu Desnoyers]

* Jon Bernard (jbernard@debian.org) wrote:
> * Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> wrote:
> > Hi Jon,
> > 
> > What's the cpuinfo spec of the build machine ?
> 
> Here is the contents of /proc/cpuinfo:
> 
>     cpu     : TI UltraSparc IIIi (Jalapeno)

http://en.wikipedia.org/wiki/SPARC#SPARC_microprocessor_specifications

UltraSPARC IIIi (Jalapeño)    ....   V9 / JPS1

so it should be a sparcv9.

Can you try a uname -a  to see which kernel version/architecture this
is? I wonder if it's a 32 or 64-bit kernel.

You might also want to try modifying configure.ac to add:

        sparc) ARCHTYPE="sparc64" ;;

below (or above)
        sparc64) ARCHTYPE="sparc64" ;;

and try to build this (and run the library tests) on the machine to see
if it works.

I suspect that this machine has a 32-bit kernel, hence the "sparc"
rather than sparc64 host cpu. I'm not sure what's the best way to detect
the machine type for these though, as really old sparcs before v9 will
be tagged as "sparc". So basically, shipping the library with a distro
targeting sparc64 is always fine, because these are v9+, but shipping
the lib with a distro targeting old sparcs would be incorrect (at
runtime) on these old machines. Now when the distro for old sparcs is
deployed on the v9+ machines, then that works. So I really don't know
what's the best approach there. Is the Linux kernel still supporting
pre-v9 sparc boxes ?

Thanks,

Mathieu

>     fpu     : UltraSparc IIIi integrated FPU
>     pmu     : ultra3i
>     prom        : OBP 4.11.4 2003/07/23 08:04
>     type        : sun4u
>     ncpus probed    : 2
>     ncpus active    : 2
>     D$ parity tl1   : 0
>     I$ parity tl1   : 0
>     Cpu0ClkTck  : 000000003bb94e80
>     Cpu1ClkTck  : 000000003bb94e80
>     MMU Type    : Cheetah+
>     State:
>     CPU0:       online
>     CPU1:       online
> 
> I belive sun4u means this is a pre-sparcv9 box, no?
> 
> J
> 
> > 
> > Basically, liburcu supports sparc starting from v9. Hopefully the build
> > machine you are trying to use is at least a v9.
> > 
> > So yes, liburcu only recornises host "sparc64", not "sparc", because
> > AFAIK all sparcv9+ are labeled "sparc64" rather than "sparc". But I
> > might be wrong here. This is why having the cpuinfo information would be
> > helpful. Also knowing the kernel configuration might help.
> > 
> > Usually, sparcv9+ are 64-bit Linux kernels with a 32-bit userland.
> > 
> > Thanks,
> > 
> > Mathieu
> > 
> > * Pierre-Marc Fournier (pierre-marc.fournier@polymtl.ca) wrote:
> > > As the maintainer of liburcu, Mathieu will be more able to help with  
> > > this than me. We do have a sparc machine in the lab. Maybe it will be  
> > > possible to reproduce the bug on it.
> > >
> > > pmf
> > >
> > > On 08/03/2010 05:39 PM, Jon Bernard wrote:
> > >> Hey Pierre-Marc, I have a bug filled against liburcu in debian [1] that
> > >> fails to build and I am hoping you have an idea for this. The full build
> > >> log is here [2]. Unfortunately, the build daemon box that the build
> > >> fails on is determined to be of host type 'sparc', but the porterboxes
> > >> that I have access to are determined to be of host type 'sparc64', and
> > >> so the build doesn't fail for me, only on the buildd machine ;) I cannot
> > >> think of a way to duplicate this environment and so I thought you may
> > >> have an idea. Any suggestions on this are much appreciated. If you need
> > >> any additional information, don't hesitate to ask.
> > >>
> > >> Cheers,
> > >>
> > >> J
> > >>
> > >> [1]: http://bugs.debian.org/cgi-bin/bugreport.cgi?bugX6543
> > >> [2]: https://buildd.debian.org/fetch.cgi?pkg=liburcu&arch=sparc&ver=0.4.6-1&stamp\x1277013595&file=log&as=raw
> > >
> > 
> > -- 
> > Mathieu Desnoyers
> > Operating System Efficiency R&D Consultant
> > EfficiOS Inc.
> > http://www.efficios.com

-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com

Re: liburcu: debian sparc fail to configure

[David Miller]

From: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Date: Thu, 5 Aug 2010 18:13:52 -0400

> * Jon Bernard (jbernard@debian.org) wrote:
>> * Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> wrote:
>> > Hi Jon,
>> > 
>> > What's the cpuinfo spec of the build machine ?
>> 
>> Here is the contents of /proc/cpuinfo:
>> 
>>     cpu     : TI UltraSparc IIIi (Jalapeno)
> 
> http://en.wikipedia.org/wiki/SPARC#SPARC_microprocessor_specifications
> 
> UltraSPARC IIIi (Jalapeño)    ....   V9 / JPS1
> 
> so it should be a sparcv9.
> 
> Can you try a uname -a  to see which kernel version/architecture this
> is? I wonder if it's a 32 or 64-bit kernel.

Yes it's a 64-bit kernel.

Why are you checking /proc/cpuinfo's "cpu" field anyways?

Parse instead the "type" field and if it's sun4u or sun4v you
have a 64-bit box.

Re: liburcu: debian sparc fail to configure

[Jon Bernard]

* Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> wrote:
> * Jon Bernard (jbernard@debian.org) wrote:
> > * Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> wrote:
> > > Hi Jon,
> > > 
> > > What's the cpuinfo spec of the build machine ?
> > 
> > Here is the contents of /proc/cpuinfo:
> > 
> >     cpu     : TI UltraSparc IIIi (Jalapeno)
> 
> http://en.wikipedia.org/wiki/SPARC#SPARC_microprocessor_specifications
> 
> UltraSPARC IIIi (Jalapeño)    ....   V9 / JPS1
> 
> so it should be a sparcv9.
> 
> Can you try a uname -a  to see which kernel version/architecture this
> is? I wonder if it's a 32 or 64-bit kernel.

Looks to be 64-bit:

    Linux lebrun 2.6.32-bpo.5-sparc64-smp #1 SMP Sat Jun 12 03:45:52 UTC 2010 sparc64 GNU/Linux

> You might also want to try modifying configure.ac to add:
> 
>         sparc) ARCHTYPE="sparc64" ;;
> 
> below (or above)
>         sparc64) ARCHTYPE="sparc64" ;;
> 
> and try to build this (and run the library tests) on the machine to see
> if it works.

This /should/ work. Debian has dropped support for pre-v9 sparc
processors [1]. So regardless of wether autoconf detects sparc or
sparc64, setting ARCHTYPE="sparc64" seems the right thing to do in this
case.

[1]: http://wiki.debian.org/Sparc64

J

> I suspect that this machine has a 32-bit kernel, hence the "sparc"
> rather than sparc64 host cpu. I'm not sure what's the best way to detect
> the machine type for these though, as really old sparcs before v9 will
> be tagged as "sparc". So basically, shipping the library with a distro
> targeting sparc64 is always fine, because these are v9+, but shipping
> the lib with a distro targeting old sparcs would be incorrect (at
> runtime) on these old machines. Now when the distro for old sparcs is
> deployed on the v9+ machines, then that works. So I really don't know
> what's the best approach there. Is the Linux kernel still supporting
> pre-v9 sparc boxes ?
> 
> Thanks,
> 
> Mathieu
> 
> >     fpu     : UltraSparc IIIi integrated FPU
> >     pmu     : ultra3i
> >     prom        : OBP 4.11.4 2003/07/23 08:04
> >     type        : sun4u
> >     ncpus probed    : 2
> >     ncpus active    : 2
> >     D$ parity tl1   : 0
> >     I$ parity tl1   : 0
> >     Cpu0ClkTck  : 000000003bb94e80
> >     Cpu1ClkTck  : 000000003bb94e80
> >     MMU Type    : Cheetah+
> >     State:
> >     CPU0:       online
> >     CPU1:       online
> > 
> > I belive sun4u means this is a pre-sparcv9 box, no?
> > 
> > J
> > 
> > > 
> > > Basically, liburcu supports sparc starting from v9. Hopefully the build
> > > machine you are trying to use is at least a v9.
> > > 
> > > So yes, liburcu only recornises host "sparc64", not "sparc", because
> > > AFAIK all sparcv9+ are labeled "sparc64" rather than "sparc". But I
> > > might be wrong here. This is why having the cpuinfo information would be
> > > helpful. Also knowing the kernel configuration might help.
> > > 
> > > Usually, sparcv9+ are 64-bit Linux kernels with a 32-bit userland.
> > > 
> > > Thanks,
> > > 
> > > Mathieu
> > > 
> > > * Pierre-Marc Fournier (pierre-marc.fournier@polymtl.ca) wrote:
> > > > As the maintainer of liburcu, Mathieu will be more able to help with  
> > > > this than me. We do have a sparc machine in the lab. Maybe it will be  
> > > > possible to reproduce the bug on it.
> > > >
> > > > pmf
> > > >
> > > > On 08/03/2010 05:39 PM, Jon Bernard wrote:
> > > >> Hey Pierre-Marc, I have a bug filled against liburcu in debian [1] that
> > > >> fails to build and I am hoping you have an idea for this. The full build
> > > >> log is here [2]. Unfortunately, the build daemon box that the build
> > > >> fails on is determined to be of host type 'sparc', but the porterboxes
> > > >> that I have access to are determined to be of host type 'sparc64', and
> > > >> so the build doesn't fail for me, only on the buildd machine ;) I cannot
> > > >> think of a way to duplicate this environment and so I thought you may
> > > >> have an idea. Any suggestions on this are much appreciated. If you need
> > > >> any additional information, don't hesitate to ask.
> > > >>
> > > >> Cheers,
> > > >>
> > > >> J
> > > >>
> > > >> [1]: http://bugs.debian.org/cgi-bin/bugreport.cgi?bugX6543
> > > >> [2]: https://buildd.debian.org/fetch.cgi?pkg=liburcu&arch=sparc&ver=0.4.6-1&stamp\x1277013595&file=log&as=raw
> > > >
> > > 
> > > -- 
> > > Mathieu Desnoyers
> > > Operating System Efficiency R&D Consultant
> > > EfficiOS Inc.
> > > http://www.efficios.com
> 
> -- 
> Mathieu Desnoyers
> Operating System Efficiency R&D Consultant
> EfficiOS Inc.
> http://www.efficios.com