1 files changed, 13 insertions, 0 deletions

diff --git a/include/litmus/litmus.h b/include/litmus/litmus.h
index 2da61fa58bdc..17d30326034c 100644
--- a/include/litmus/litmus.h
+++ b/include/litmus/litmus.h
@@ -85,6 +85,19 @@ static inline lt_t litmus_clock(void)
         return ktime_to_ns(ktime_get());
 }
 
+static inline int is_persistent(struct task_struct* t)
+{
+        int is_per = ( 0
+                #ifdef CONFIG_REALTIME_AUX_TASKS
+                        || t->rt_param.is_aux_task
+                #endif
+                #ifdef CONFIG_LITMUS_SOFTIRQD
+                        || t->rt_param.is_interrupt_thread
+                #endif
+                        );
+        return is_per;
+}
+
 /* A macro to convert from nanoseconds to ktime_t. */
 #define ns_to_ktime(t)          ktime_add_ns(ktime_set(0, 0), t)