[coldfire-gnu-discuss] NPTL on 547x cpus

[Luigi 'Comio' Mantellini]

FYI, I posted my complete source tree on github:

http://github.com/comio/linux-2.6.25-cf547x/tree/2.6.25-cf547x

We worked on cache handling and fec.

I hope that freescale wakes up and continues the kernel development...

ciao

luigi



venerdì 14 maggio 2010 15:30 "Wong, Ken" <Ken.Wong at christiedigital.com> ha 
scritto:
> We tried the 4.4 toolchain briefly using the 2.6.25 kernel from Freescale. 
> We followed the instructions in the getting started guide and was able to
> patch the kernel without issue.
> 
> Using the new 4.4 toolchain, our threads seemed to consume much more CPU
> time than if we compiled using the old 4.3 toolchain.  We're currently
> still using the 4.3 toolchain with the Linux 2.6.25 kernel until we find
> some more time in our schedule to do the switch over.
> 
> Aside from the unexplained jump in processor usage, our ~2 week evaluation
> didn't uncover any bugs with the 4.4 toolchain related to NPTL.
> 
> -----Original Message-----
> From: Maxim Kuvyrkov [mailto:maxim at codesourcery.com]
> Sent: Friday, May 14, 2010 9:21 AM
> To: Luigi 'Comio' Mantellini
> Cc: coldfire-gnu-discuss at codesourcery.com
> Subject: Re: [coldfire-gnu-discuss] NPTL on 547x cpus
> 
> On 5/14/10 5:08 PM, Luigi 'Comio' Mantellini wrote:
> > Now, I'm interested to use the last 4.4-217 in order to use the nptl
> > implementation, but unfortunately the pthread seems to be broken.
> 
> What do you mean by "broken"?
> 
> Did you apply the kernel patch that the Getting Started Guide mentions?
> 
> To add NPTL support to current ColdFire kernels one needs to apply one
> of the patches linked in this knowledge base entry:
> https://support.codesourcery.com/GNUToolchain/kbentry52 .
> 
> ...
> 
> > Has anyone used and tested the 4.4-x toolchains? I would like to have
> > feedback from cf developers
> 
> We at CodeSourcery run thousands, if not not millions, tests for each
> release.  Testing of 4.4-217 release included GLIBC testsuite which has
> many tests for libpthread.

-- 


Luigi 'Comio' Mantellini
R&D - Software

Industrie Dial Face S.p.A.
Via Canzo, 4
20068 Peschiera Borromeo (MI) Italy
Tel.: +39 02 5167 2813
Fax: +39 02 5167 2459 
E-mail: luigi.mantellini at idf-hit.com 
Website: http://www.idf-hit.com


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