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-rw-r--r--drivers/base/cpu.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index 321cd7b4d817..a73ab95558f5 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -18,6 +18,7 @@
#include <linux/cpufeature.h>
#include <linux/tick.h>
#include <linux/pm_qos.h>
+#include <linux/sched/isolation.h>
#include "base.h"
@@ -271,8 +272,16 @@ static ssize_t print_cpus_isolated(struct device *dev,
struct device_attribute *attr, char *buf)
{
int n = 0, len = PAGE_SIZE-2;
+ cpumask_var_t isolated;
- n = scnprintf(buf, len, "%*pbl\n", cpumask_pr_args(cpu_isolated_map));
+ if (!alloc_cpumask_var(&isolated, GFP_KERNEL))
+ return -ENOMEM;
+
+ cpumask_andnot(isolated, cpu_possible_mask,
+ housekeeping_cpumask(HK_FLAG_DOMAIN));
+ n = scnprintf(buf, len, "%*pbl\n", cpumask_pr_args(isolated));
+
+ free_cpumask_var(isolated);
return n;
}

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