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Re: "debug mode" for config(1)

On Sat, 28 Dec 2013, Paul Goyette wrote:

Is there a "debug" mode available for config?

I would like to know why a particular source file is being included in my kernel. :)


OK, problem solved, with a large dose of embarassment!

It seems that I had forgotten that my kernel config included both of

        pseudo-device crypto
        pseudo-device swcrypto

which obviously cause all of opencrypto to be brought in to the kernel.


Why do I care, if everything works? Well, VND_COMPRESSION is defined when building src/sys/modules/vnd/ and that appears to require access to the stuff in net/zlib.c. But net/zlib.c is not linked as part of the module, so loading the module would/should fail if the appropriate symbols/routines are not available in the kernel. So it would seem that some mechanism needs to exist to ensure that the zlib stuff can be made available, perhaps as a separate module (similar to the way that the dev/dksubr.c stuff is now available for use in the vnd, cgd, and ccd modules).

Yup. If I remove the pseudo-devices from my kernel config, then the vnd module fails to load.

I'll make net/zlib.c into its own tiny module tomorrow.

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