Hi,
drivers/net/ethernet/intel/e100.c:
for (i = 0; i < 100; i++) {
udelay(20);
if ((data_out = ioread32(&nic->csr->mdi_ctrl)) & mdi_ready)
break;
}
On my system this calls delay_tsc and if I understand this
correctly, this will block ksoftirqd and everything having
a lower priority for up to 2 ms. Which is what I am seeing
in my traces - this loop most probably causes the ~1 ms
latencies I am regularly seeing.
Is there something that can be done about it except trying
the split softirq feature? I need to have the timers above
some of my threads, but I don't like the networking blocking
them...
Anyone has some experiences/hints for using e100 with linux-rt?
The kernel is the current 3.4-rt one.
Thanks
--
Stano
--
To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
