Embedded Linux Made Easy (4) A look at the kernel

摘要

GNU/Linux provides interfaces and applications for devices that we are used to seeing on desktop computers and servers. Much of this transfers to the embedded domain, where Linux relieves the programmer of a lot of work by handling networking, USB, Bluetooth and more without the need to write complex dedicated C programs. And as we shall see, using a modern operating system brings many other benefits too. In the previous instalments in the series we have looked at how the toolchain, the kernel and bootloader, and a standard file system can be got up and running. One aim of the series is to show developers what is happening 'under the bonnet', for example in how devices and processes are implemented.