Subject: Re: Syscalls to set CPU affinity
To: Mindaugas R. <rmind@NetBSD.org>
From: David Holland <dholland+netbsd@eecs.harvard.edu>
List: tech-kern
Date: 09/17/2007 20:52:13
On Sat, Sep 15, 2007 at 09:54:09PM +0300, Mindaugas R. wrote:
> > int pset_bind(psetid_t pset, idtype_t idtype, id_t id, psetid_t *opset);
> > int pset_create(psetid_t *newpset);
> > int pset_destroy(psetid_t pset);
> > int pset_assign(psetid_t pset, processorid_t cpu, psetid_t *opset);
>
> The only thing I am not sure is a definition of psetid_t. After some
> thinking, perhaps such one would be OK for now:
>
> typedef int32_t psetid_t;
>
> However, in future I would like to see the ability to control 64 and more
> processors in the set. The API allows dynamic allocation of the set, which
> would be fine for the userland, but perhaps not very conformable in the
> kernel. Any thoughts about these?
I think it would be best if it worked like sigset_t. But it looks like
the API is already wrong for that...
--
- David A. Holland / dholland+netbsd@eecs.harvard.edu