Yeah, the Linux kernel has ~12m lines of code. <1m are the core, the rest are drivers.

5 Millions alone for the AMD graphic driver.

	▲	treyd 7 days ago \| parent [-]
		Much of that 5M are hardware register definitions expanded into C headers. I am not sure how you'd consolidate that but it's not like that's all bespoke C code.

What an inefficient disaster to carry around all those drivers to run hardware that isn't on the device you're running on.

	▲	ch33zer 7 days ago \| parent \| next [-]
		* The vast majority aren't compiled into any given kernel * Those that are are only loaded when needed It's not that bad
	▲	RJIb8RBYxzAMX9u 7 days ago \| parent \| prev \| next [-]
		I sympathize, but the reality is that except for very specialized cases, (hyper) optimizing for CPU performance is unnecessary, even in the embedded space. A Cortex-M0 has roughly the same performance as a 486, and is cheap and power efficient enough to be bundled in disposable test kits, vapes, etc.
	▲	wmf 7 days ago \| parent \| prev \| next [-]
		It's modular so you don't have to compile drivers you don't need.
	▲	beeflet 7 days ago \| parent \| prev [-]
		Most of it is in modules that don't have to be compiled at all (and usually aren't)