Messages in this thread | | | Subject | Re: [PATCH] mm: don't rely on system state to detect hot-plug operations | From | David Hildenbrand <> | Date | Wed, 9 Sep 2020 11:24:24 +0200 |
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>> I am not sure an enum is going to make the existing situation less >> messy. Sure we somehow have to distinguish boot init and runtime hotplug >> because they have different constrains. I am arguing that a) we should >> have a consistent way to check for those and b) we shouldn't blow up >> easily just because sysfs infrastructure has failed to initialize. > > For the point a, using the enum allows to know in register_mem_sect_under_node() > if the link operation is due to a hotplug operation or done at boot time. > > For the point b, one option would be ignore the link error in the case the link > is already existing, but that BUG_ON() had the benefit to highlight the root issue. >
WARN_ON_ONCE() would be preferred - not crash the system but still highlight the issue.
> Cheers, > Laurent. >
-- Thanks,
David / dhildenb
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