This is a bit like defunctionalization: https://blog.sigplan.org/2019/12/30/defunctionalization-everybody-does-it-nobody-talks-about-it/ https://blog.sigplan.o

This is a bit like defunctionalization: https://blog.sigplan.org/2019/12/30/defunctionalization-everybody-does-it-nobody-talks-about-it/ https://blog.sigplan.org/2019/12/30/defunctionalization-ever... It's basically replacing a function pointer with an enum. The kernel version is particularly simple, because the enum values don't have fields, they are a pure discriminant. Although I think the integritized function pointers aren't enum values or indices into the jump table, they're pointers into it. I think they could be indices; I'm not sure if there's a reason this is a bad idea.