On Mon, 2005-01-10 at 17:55, Pavel Machek wrote:
I enabled CPU hotplug and preemptible debugging... now I get...
BUG: using smp_processor_id() in preemptible [00000001] code:
swapper/0
caller is acpi_processor_idle+0xb/0x235
[<c020ba28>] smp_processor_id+0xa8/0xc0
[<c02338ce>] acpi_processor_idle+0xb/0x235
[<c02338c3>] acpi_processor_idle+0x0/0x235
[<c02338ce>] acpi_processor_idle+0xb/0x235
[<c02338c3>] acpi_processor_idle+0x0/0x235
[<c02338c3>] acpi_processor_idle+0x0/0x235
[<c02338c3>] acpi_processor_idle+0x0/0x235
[<c0101115>] cpu_idle+0x75/0x110
[<c04f5988>] start_kernel+0x158/0x180
[<c04f5390>] unknown_bootoption+0x0/0x1e0
It doesn't trouble to me. It's in idle thread.
You mean it does not happen to you? On my machine it fills logs very
quickly...
What I mean is idle thread can't be migrated so this doesn't impact the
correctness. I guess the preemptible debugging can't recognise such
situation.