| To: | "Rojhalat Ibrahim" <imr@rtschenk.de> |
|---|---|
| Subject: | Re: Tracking down exception in sched.c |
| From: | "Kevin D. Kissell" <kevink@mips.com> |
| Date: | Mon, 20 Feb 2006 15:52:52 +0100 |
| Cc: | "Mark E Mason" <mark.e.mason@broadcom.com>, <linux-mips@linux-mips.org> |
| Original-recipient: | rfc822;linux-mips@linux-mips.org |
| References: | <7E000E7F06B05C49BDBB769ADAF44D0773A636@NT-SJCA-0750.brcm.ad.broadcom.com> <43F9B168.6090105@rtschenk.de> <43F9C58E.4020606@mips.com> <43F9D215.3090506@rtschenk.de> |
| Sender: | linux-mips-bounce@linux-mips.org |
> The behavior of the two loops is not the same because sched_init
> is called long before smp_prepare_cpus. Therefore for_each_cpu
> only loops once for CPU 0. I know this is not a great fix.
> I simply reverted the code to what's worked before.
It's certainly the code that I'm still using! ;o) So prom_build_cpu_map
needs to be called earlier (as in maybe from smp_prepare_boot_cpu?).
Either that, or each secondary needs to take responsibility for initializing
its own run queue, but I find the thought of having the system up and
running SMP with some run queues not yet initialized makes me nervous.
Regards,
Kevin K.
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