Re: [PATCHv4 2/3] fs: Make core dump functionality optional

[Josh Triplett <josh@joshtriplett.org>]

On Fri, Aug 10, 2012 at 08:23:23AM -0500, Serge Hallyn wrote:
> Quoting Alex Kelly (alex.page.kelly@gmail.com):
> > Adds an expert Kconfig option, CONFIG_COREDUMP, which allows disabling of core dump.
> > This saves approximately 2.6k in the compiled kernel, and complements CONFIG_ELF_CORE,
> > which now depends on it.
> 
> Is there another reason than the 2.6k to do this?  My kernels range
> between 4.8 and 5M, so that's .05% size savings?

A kitchen-sink kernel might take up that much space, but you can build a
minimal embedded kernel that only takes up ~200k, at which point 2.6k
represents a >1% decrease.  Add a few more changes like this, and those
decreases start to add up.  At this point, no one thing you can chop out
of the kernel will give you a 100k decrease by itself; you need a pile
of changes like this one to do that.

- Josh Triplett