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SubjectRe: Fix 80d20d35af1e ("nohz: Fix local_timer_softirq_pending()") may have revealed another problem
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On 28.09.2018 15:18, Frederic Weisbecker wrote:
> On Thu, Sep 27, 2018 at 06:05:46PM +0200, Thomas Gleixner wrote:
>> On Tue, 28 Aug 2018, Frederic Weisbecker wrote:
>>> On Fri, Aug 24, 2018 at 07:06:32PM +0200, Heiner Kallweit wrote:
>>>> I tested it and Frederic is right, it doesn't help. Can it be somehow related to
>>>> the cpu being brought down during suspend? Because I get the warning only during
>>>> suspend when the cpu is inactive already (but still online).
>>>
>>> It's hard to tell, I haven't been able to reproduce on suspend to disk/mem.
>>>
>>> Does this script eventually trigger it after some time?
>>
>> Any update to this?
>
> Heiner? Can you please test the script I sent to you?
>
> Thanks.
>
Sorry, took some time .. And yes, running your script triggers the message too.

[ 25.646015] x86: Booting SMP configuration:
[ 25.646044] smpboot: Booting Node 0 Processor 1 APIC 0x2
[ 25.664491] smpboot: CPU 1 is now offline
[ 25.679299] x86: Booting SMP configuration:
[ 25.679329] smpboot: Booting Node 0 Processor 1 APIC 0x2
[ 25.698449] smpboot: CPU 1 is now offline
[ 25.711698] x86: Booting SMP configuration:
[ 25.711727] smpboot: Booting Node 0 Processor 1 APIC 0x2
[ 25.729185] NOHZ: local_softirq_pending 202
[ 25.729229] NOHZ: local_softirq_pending 202
[ 25.730759] smpboot: CPU 1 is now offline
[ 25.744053] x86: Booting SMP configuration:
[ 25.744083] smpboot: Booting Node 0 Processor 1 APIC 0x2
[ 25.762520] smpboot: CPU 1 is now offline
[ 25.776834] x86: Booting SMP configuration:
[ 25.776863] smpboot: Booting Node 0 Processor 1 APIC 0x2
[ 25.794189] NOHZ: local_softirq_pending 202
[ 25.796672] smpboot: CPU 1 is now offline
[ 25.805970] x86: Booting SMP configuration:
[ 25.805999] smpboot: Booting Node 0 Processor 1 APIC 0x2
[ 25.827360] smpboot: CPU 1 is now offline
[ 25.839043] x86: Booting SMP configuration:
[ 25.839073] smpboot: Booting Node 0 Processor 1 APIC 0x2
[ 25.858184] NOHZ: local_softirq_pending 202
[ 25.862182] smpboot: CPU 1 is now offline
[ 25.873759] x86: Booting SMP configuration:
[ 25.873789] smpboot: Booting Node 0 Processor 1 APIC 0x2
[ 25.893385] smpboot: CPU 1 is now offline

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