Leonardo Pappagallo wrote: > Hi Jan, > > I have this problem: > > I have a two PC with realtek 8139too ethernet card. > > If I start up the master before the slave, when the slave rtnet script runs, > > it calls "rtifconfig > > rteth0 up x.y.z.w" and I have this message: "Too much work at interrupt, > > IntrStatus= 0x0001". > And if you start the slave before the master, this does not happen?
> The IRQ of network card is not shared by other devices.
>
> Do you have an idea about this strange behaviour? What can I do to avoid
>
> this problem?
What versions are you using: RTnet, Xenomai or RTAI, kernel & I-pipe
patch?
Let's try something new (at least when it comes to remote-diagnosis of
RTnet):
--- drivers/rt_8139too.c (Revision 1106)
+++ drivers/rt_8139too.c (Arbeitskopie)
@@ -1722,6 +1722,7 @@ static int rtl8139_interrupt(rtdm_irq_t
boguscnt--;
} while (boguscnt > 0);
if (boguscnt <= 0) {
+ ipipe_trace_freeze(0);
rtdm_printk(KERN_WARNING "%s: Too much work at interrupt, "
"IntrStatus=0x%4.4x.\n", rtdev->name, status);
/* Clear all interrupt sources. */
Apply this patch to the driver, switch on CONFIG_IPIPE_TRACE (=> Kernel
hacking), and rebuild both kernel and RTnet. When the driver is about
the complain, a backtrace will be captured. You can obtain it later via
/proc/ipipe/trace/frozen. Do an "echo 1 > /proc/ipipe/trace/verbose" and
"echo 10000 > /proc/ipipe/trace/back_trace_points" to enhance the
reported trace. Pack the result and post it.
The tracer will definitely work with Xenomai (kernel <= 2.6.19, tracer
fixes for 2.6.20 are pending), but RTAI /should/ be fine as well (but
I haven't tried for a year or so).
Jan
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