Messages in this thread | | | Date | Thu, 21 Apr 2022 16:31:13 +0200 | Subject | Re: [RFC PATCH] kernel/cpu: restart cpu_up when hotplug is disabled | From | David Hildenbrand <> |
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>> It's far from perfect I would say, but we really wanted to avoid >> letting user space having to deal with retry logic. > > What's so hard with retry logic in user space? > > If you can come up with a reasonable argument why user space cannot be > fixed, then there is certainly a better solution than slapping a > msleep(5) at some random place into the code. Most probably you're right and we should just retry in udev. Staring at the history, it looks like the -EBUSY might have been returned forever, so user space just never really triggered it on actual CPU hotplug because it doesn't usually happen that cpu hotplug is disabled.
-- Thanks,
David / dhildenb
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