Messages in this thread | | | Date | Wed, 30 Oct 2002 10:42:54 +0000 | From | Padraig Brady <> | Subject | Re: [PATCH 2.5] Retrieve configuration information from kernel |
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Khalid Aziz wrote: > Paul Clements wrote: > >>Have you considered compressing the config info in order to reduce >>the space wastage in the loaded kernel image? Could easily be 10's of KB >>(not that that's a lot these days). The info would then be retrieved via >>"gunzip -c", et al. instead of a simple "cat". > > I wanted to start with a simple implementation first. There are a couple > of things that can be done in future to further improve meory usage: (1) > Drop "CONFIG_" and "# CONFIG_" from each line and add it back when > printing from /proc/ikconfig and extract-ikconfig script, (2) Compress > the resulting configuration. Something to do in near future :)
$ wc -c /usr/src/linux-2.4/.config 38092 /usr/src/linux-2.4/.config $ gzip -c /usr/src/linux-2.4/.config | wc -c 10305 $ sed '/^ *$/d;/^#/d;s/^CONFIG_//' /usr/src/linux-2.4/.config | wc -c 17267 $ sed '/^ *$/d;/^#/d;s/^CONFIG_//' /usr/src/linux-2.4/.config | gzip | wc -c 6155
Also it seems like it would be more useful to have the config in the kernel image rather than (just) proc?
Pádraig.
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