KBUILD_MODNAME

mra90 · 11-29-2019, 09:48 AM

Hi,

I noticed "lspci -v" shows module/driver names that doesn't exist in the module source code. I have figured out that these names are registered via "__pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME);"
And here is my question, how and where is KBUILD_MODNAME assigned with proper name?

I grep for KBUILD_MODNAME in the module source directory and I found it is being assigned to proper name in some .cmd file but these I created after compilation. So where is it done in the first place?

Thanks

smallpond · 12-02-2019, 11:25 AM

The command line when compiling the module will define the name with "-DKBUILD_MODNAME=xxxxx" where the xxxxx comes from the basename of the module. It's set by one of the kernel build scripts, I think here:

https://elixir.bootlin.com/linux/v3....ile.build#L189