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-rw-r--r--kernel/cpu.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 43e741e88691..1e890f548df8 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -9,6 +9,7 @@
#include <linux/notifier.h>
#include <linux/sched/signal.h>
#include <linux/sched/hotplug.h>
+#include <linux/sched/isolation.h>
#include <linux/sched/task.h>
#include <linux/sched/smt.h>
#include <linux/unistd.h>
@@ -1199,8 +1200,15 @@ int freeze_secondary_cpus(int primary)
int cpu, error = 0;
cpu_maps_update_begin();
- if (!cpu_online(primary))
+ if (primary == -1) {
primary = cpumask_first(cpu_online_mask);
+ if (!housekeeping_cpu(primary, HK_FLAG_TIMER))
+ primary = housekeeping_any_cpu(HK_FLAG_TIMER);
+ } else {
+ if (!cpu_online(primary))
+ primary = cpumask_first(cpu_online_mask);
+ }
+
/*
* We take down all of the non-boot CPUs in one shot to avoid races
* with the userspace trying to use the CPU hotplug at the same time