Allow scheduling during early boot.
- Send IPI wakeups once SMP is started even if cold is true. - Permit preemptions when cold is true. These changes are needed for EARLY_AP_STARTUP. MFC after: 2 weeks Sponsored by: Netflix
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=308565
@ -326,7 +326,6 @@ maybe_preempt(struct thread *td)
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* - The current thread has a higher (numerically lower) or
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* equivalent priority. Note that this prevents curthread from
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* trying to preempt to itself.
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* - It is too early in the boot for context switches (cold is set).
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* - The current thread has an inhibitor set or is in the process of
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* exiting. In this case, the current thread is about to switch
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* out anyways, so there's no point in preempting. If we did,
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@ -347,7 +346,7 @@ maybe_preempt(struct thread *td)
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("maybe_preempt: trying to run inhibited thread"));
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pri = td->td_priority;
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cpri = ctd->td_priority;
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if (panicstr != NULL || pri >= cpri || cold /* || dumping */ ||
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if (panicstr != NULL || pri >= cpri /* || dumping */ ||
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TD_IS_INHIBITED(ctd))
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return (0);
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#ifndef FULL_PREEMPTION
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@ -1105,7 +1104,7 @@ forward_wakeup(int cpunum)
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if ((!forward_wakeup_enabled) ||
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(forward_wakeup_use_mask == 0 && forward_wakeup_use_loop == 0))
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return (0);
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if (!smp_started || cold || panicstr)
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if (!smp_started || panicstr)
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return (0);
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forward_wakeups_requested++;
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