David Schleef writes:
> On Fri, Jun 30, 2000 at 03:29:46PM -0600, Richard Gooch wrote:
> >
> > I don't like that at all. Adding a pile of extra "fast" syscalls is
> > just too hackish. Just say: "if you go into the kernel, you lose RT".
> > It's the thin edge of the wedge. Soon you'll be getting people to say
> > "we need read(2) to keep RT priority".
>
> They wouldn't technically be Linux system calls, but LXRT system
> calls. They also don't tend to be any faster; they just happen
> to be RT-safe.
>
> The nice thing about RT-safe is that means it is thread-safe and
> lock-free. So an RT-safe version of gettimeofday() could easily
> be a replacement for the current gettimeofday. But that would
> require real-time support in the kernel.
I don't really see the point to adding LXRT system calls. If all you
want is a RT-safe gettimeofday, then wait for the user-space
implementation based on the global code page scheme.
Regards,
Richard....
Permanent: rgooch@atnf.csiro.au
Current: rgooch@ras.ucalgary.ca
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