Please send to [EMAIL PROTECTED] if you want to make sure I see it -- I don't look that
the Zentropix list very often.
1. RTL is using soft interrupts to communicate with Linux. So rtl_printf, for example,
is implemented like this:
In RT mode
copy data into a buffer, generate an interrupt for Linux rtl_printf
handler
In Linux
rtl_printf handler copies data from buffer and uses printk to send
to logger.
David Schleef first thought of using the soft interrupts for a rtl_printf although
he is not responsible for any bugs in the current implementation.
2. I think this is an artifact of a cosmetic gap in our emulation, but I'll check on
it.
My suspicion is that xosview is using some method of figuring out when interrupts
are asserted that gives it a false answer.
3. Socorro is a crisp 99 with lows in the 60s expected tonight. Clouds have been
sighted, but rain seems improbable (well it does happen, but it is always
improbable).
On Tue, May 30, 2000 at 10:39:20AM -0600, Philip N Daly wrote:
> Curiosity killed the cat ...
>
> Dr Curiosity here. I installed RTLinux 2.2 over the weekend on a dual
> Pentium III box. Works fine but I'm curious about a couple of points:
>
> 1. I see that /proc/interrupts now has IRQ lines 60-63 assigned to some
> RTLinux "devices" - fifo, RTL-scheduler, rtl_printf and RTL-clock.
> I think I understand why but a couple of sentences explanation from
> the developers would be nice.
>
> 2. I run xosview and prior to inserting the RTLinux modules (using insrtl)
> there is some common activity. After insertion, IRQ lines 14 and 19 are
> constantly "on" for one CPU. IRQ line 14 is associated with ide0 and
> 19 with the ethernet controller. I don't understand why these are
> asserted - or if they are? There is no increased usage value
> reported by either CPU in /proc/interrupts but xosview insists that
> they are constantly active on one CPU. What's happening (although it
> doesn't affect the responsivity of the machine because it's dual PIII).
>
> Regards amigos,
>
> (Tucson will be a cool 107 today with an overnight low of 72 ... aren't we
> lucky?).
>
> +==================================================================+
> Phil Daly, NOAO/AURA, 950 N. Cherry Avenue, Tucson AZ 85719, U S A
> E-mail: [EMAIL PROTECTED] V-mail: (520) 318 8438 Fax: (520) 318 8360
>
--
---------------------------------------------------------
Victor Yodaiken
FSMLabs: www.fsmlabs.com www.rtlinux.com
FSMLabs is a servicemark and a service of
VJY Associates L.L.C, New Mexico.
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