Re: [PATCH] DevFS support for /dev/cpu/X/(cpuid|msr)

Richard Gooch
2002-01-08T17:35:51Z

Matt Dainty writes:
> On Tue, Jan 08, 2002 at 08:14:51PM +1100, Rusty Russell wrote:
> > On Tue, 8 Jan 2002 11:13:02 +0000
> > Matt Dainty <matt@bodgit-n-scarper.com> wrote:
> >
> > > On Sun, Jan 06, 2002 at 06:40:58PM -0700, Richard Gooch wrote:
> > > >
> > > > So I'd like to propose a new file (say kernel/smp.c) which has generic
> > > > startup code for each CPU. To start with, it can have a
> > > > generic_cpu_init() function, which is called by each arch. Note that
> > > > this function would be called for the boot CPU too.
> > >
> > > Would this also be hacked into whatever Hotswap CPU support exists? Such

Hm, that would be nice.

> > We use /proc/sys/cpu/#/. I don't understand what /dev/cpu/xxx is supposed to
> > do.
>
> /dev/cpu/[0...]/... contains (on i386 at least), the cpuid and msr
> character devices, except on devfs-enabled boxen, these don't appear
> automatically.

Indeed.

Regards,

Richard....
Permanent: rgooch@atnf.csiro.au
Current: rgooch@ras.ucalgary.ca