Messages in this thread | | | Date | Thu, 27 May 2021 16:55:32 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH v7 16/22] sched: Defer wakeup in ttwu() for unschedulable frozen tasks |
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On Thu, May 27, 2021 at 03:44:12PM +0100, Will Deacon wrote: > I'm not seeing how this handles tasks which weren't put in the freezer > because they have PF_FREEZER_SKIP set. For these tasks, we need to make > sure that they don't become runnable before we have onlined a core which > is capable of running them, and this could occur because of any old > wakeup (i.e. whatever it was that they blocked on).
I was under the impression that userspace tasks could not have PF_FREEZER_SKIP set.. let me look harder.
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