1 files changed, 12 insertions, 0 deletions

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index ec1a286684a5..59965ec0b7de 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -2366,6 +2366,18 @@ unsigned long nr_running(void)
         return sum;
 }
 
+/*
+ * Check if only the current task is running on the cpu.
+ */
+bool single_task_running(void)
+{
+        if (cpu_rq(smp_processor_id())->nr_running == 1)
+                return true;
+        else
+                return false;
+}
+EXPORT_SYMBOL(single_task_running);
+
 unsigned long long nr_context_switches(void)
 {
         int i;