svn commit: r367213 - stable/12/sys/kern

[Michal Meloun]

Author: mmel
Date: Sat Oct 31 15:38:41 2020
New Revision: 367213
URL: https://svnweb.freebsd.org/changeset/base/367213

Log:
  MFC r360464:
  
    Don't try to set frequendcy for enumerated but never started CPUs.

Modified:
  stable/12/sys/kern/kern_cpu.c
Directory Properties:
  stable/12/   (props changed)

Modified: stable/12/sys/kern/kern_cpu.c
==============================================================================
--- stable/12/sys/kern/kern_cpu.c	Sat Oct 31 15:36:41 2020	(r367212)
+++ stable/12/sys/kern/kern_cpu.c	Sat Oct 31 15:38:41 2020	(r367213)
@@ -333,6 +333,12 @@ cf_set_method(device_t dev, const struct cf_level *lev
 
 		/* 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);