Messages in this thread | | | Subject | Re: [ACPI] ACPI using smp_processor_id in preemptible code | From | Li Shaohua <> | Date | Tue, 11 Jan 2005 09:04:34 +0800 |
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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.
Thanks, Shaohua
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