On Saturday 03 March 2007 23:50:02 bert hubert wrote:
> > for (;;)
> > asm volatile ("idle");
>
> This looks remarkably like relax_cpu()
Actually not: cpu_relax() is defined as barrier(), it can't
call idle because that might make it sleep for a indefinite
amount of time (until the next interrupt, but only if they
are enabled).
Some nice architectures provide a hardware mechanism to do
cpu_relax, like going to low-power mode for a few microseconds,
but this one doesn't seem to have it.
Arnd <><
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
