Re: How do I learn the Hurd stuff?

[Almudena Garcia]

> Both components are duplicated its codes to run with a single processor and
> multiprocessor.

Which duplication do you see? sched_prim.c is shared.

For example, I saw the duplicated code in pmap.h and pmap.c. Also in kern/cpu_number.h (the code what I fixed), and many codes in kern/ directory.

I didn't see sched_prim.c, sorry. 

is there any guide to understanding GNU Mach code? To learn about what do each file.

Thanks, and sorry

 

El jue., 30 ago. 2018 a las 20:21, Samuel Thibault (<samuel.thibault@gnu.org>) escribió:

Almudena Garcia, le jeu. 30 août 2018 20:12:07 +0200, a ecrit:
> Both components are duplicated its codes to run with a single processor and
> multiprocessor.

Which duplication do you see? sched_prim.c is shared.

> Also, there is another problem with drivers, what aren't thread-safe. Then, we
> have to isolate these process to avoid concurrency problems

Yes, this is a real concern. For the Linux drivers, the long-term goal
is to move them to userland anyway. For Mach drivers, quite often they
are not performance-sensitive, so big locks would be enough.

Samuel