On Fri, 24 Apr 2009, Rog=C3=A9rio Brito wrote:

Hi, Guennadi, Kumar & Co.
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Guennadi, since you seem to be the one responsible for the
linkstation/kurobox in the kernel,

That's not howI interpret my role in linkstation development / support.

I would like to ask you a few things
that I couldn't quite understand. Please, forgive my ignorance here
while I ask you some things:
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 01. why is anticipatory the default scheduler for linkstations when CFQ
     is the default scheduler for the rest of the kernel?
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 02. since kuroboxes/linkstations are meant to store files, is there any
     reason why they don't have support for large blk devs enabled by
     default?
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 03. why is CONFIG_MIGRATION enabled in such low memory devices?
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 04. why is CONFIG_BLK_DEV_RAM enabled by default?
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 05. why is SCSI_LOWLEVEL enabled, if no device under that tree is used?
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 06. idem for CONFIG_NETDEV_10000.
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 07. idem for CONFIG_WIRELESS.
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 08. idem for CONFIG_HWMON.
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 09. idem for CONFIG_CRYPTO_HW.
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 10. any reason why CONFIG_VIDEO_OUTPUT_CONTROL is configured as a
     module?
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 11. any reason why CIFS is not configured with extended attributes,
     while both ext3 and nfs are?
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 12. wouldn't it be a good thing to enable CONFIG_PRINTK_TIME?
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As I already replied to you earlier, I am not particularly interested in=20
fine-tuning and optimisation of defconfigs. IMHO *_defconfigs are only=20
examples of board configuration, that are known to build and work. The=20
rest is up to the user / packager.

Perhaps similar remarks would apply to the other device that you
maintain? I forgot its name.
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Again, please, forgive my ignorance here regarding the questions above.
I'm really looking for some clarification and to get things in shape
both on my systems and in the default kernel configuration, in general.

Feel free to submit patches with reasoning to the powerpc ML and=20
respective maintainer as per MAINTAINERS file.

Thanks
Guennadi
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Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/