I have a boot time measurement I want to perform in a very precise manner, and I need to instrument init to do so. What version of init does Ubuntu ARM use, and where can I find its source?
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I have a boot time measurement I want to perform in a very precise manner, and I need to instrument init to do so. What version of init does Ubuntu ARM use, and where can I find its source?
I’m not sure if you’re looking for the “init” process, or the Linux bootstrap initialization code.
Either way – they’re part of the standard Linux source tree, freely available, and well-documented:
For example:
http://www.ubuntu.com/
http://www.kernel.org
http://www.cnx-software.com/2012/03/27/cross-compiling-the-arm-linux-kernel-in-ubuntu-12-04-lts/