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Don't try to set frequendcy for enumerated but newer started CPUs.

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Openfirmare enumerates and installs the driver for all processors,
regardless of whether they will be started later (because of power
constrains for example).

MFC after: 3 weeks
This commit is contained in:
Michal Meloun 2020-04-29 14:14:15 +00:00
parent 7838a78269
commit 5ab94f48a2
1 changed files with 6 additions and 0 deletions
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6
sys/kern/kern_cpu.c
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@ -325,6 +325,12 @@ cf_set_method(device_t dev, const struct cf_level *level, int priority)
/* Bind to the target CPU before switching. */
pc = cpu_get_pcpu(set->dev);
/* Skip settings if CPU is not started. */
if (pc == NULL) {
error = 0;
goto out;
}
thread_lock(curthread);
pri = curthread->td_priority;
sched_prio(curthread, PRI_MIN);