diff --git a/include/nuttx/spinlock.h b/include/nuttx/spinlock.h
index 544352ef53..4d77b8611f 100644
--- a/include/nuttx/spinlock.h
+++ b/include/nuttx/spinlock.h
@@ -390,6 +390,16 @@ irqstate_t spin_lock_irqsave(spinlock_t *lock);
 #  define spin_lock_irqsave(l) ((void)(l), up_irq_save())
 #endif
 
+/****************************************************************************
+ * Name: spin_lock_irqsave_wo_note
+ ****************************************************************************/
+
+#if defined(CONFIG_SMP)
+irqstate_t spin_lock_irqsave_wo_note(spinlock_t *lock);
+#else
+#  define spin_lock_irqsave_wo_note(l) ((void)(l), up_irq_save())
+#endif
+
 /****************************************************************************
  * Name: spin_unlock_irqrestore
  *
@@ -425,4 +435,14 @@ void spin_unlock_irqrestore(spinlock_t *lock, irqstate_t flags);
 #  define spin_unlock_irqrestore(l, f) up_irq_restore(f)
 #endif
 
+/****************************************************************************
+ * Name: spin_unlock_irqrestore_wo_note
+ ****************************************************************************/
+
+#if defined(CONFIG_SMP)
+void spin_unlock_irqrestore_wo_note(spinlock_t *lock, irqstate_t flags);
+#else
+#  define spin_unlock_irqrestore_wo_note(l, f) up_irq_restore(f)
+#endif
+
 #endif /* __INCLUDE_NUTTX_SPINLOCK_H */
diff --git a/sched/irq/irq_spinlock.c b/sched/irq/irq_spinlock.c
index c828b57ca5..8c4f11eb68 100644
--- a/sched/irq/irq_spinlock.c
+++ b/sched/irq/irq_spinlock.c
@@ -106,6 +106,34 @@ irqstate_t spin_lock_irqsave(spinlock_t *lock)
   return ret;
 }
 
+/****************************************************************************
+ * Name: spin_lock_irqsave_wo_note
+ ****************************************************************************/
+
+irqstate_t spin_lock_irqsave_wo_note(spinlock_t *lock)
+{
+  irqstate_t ret;
+  ret = up_irq_save();
+
+  if (NULL == lock)
+    {
+      int me = this_cpu();
+      if (0 == g_irq_spin_count[me])
+        {
+          spin_lock_wo_note(&g_irq_spin);
+        }
+
+      g_irq_spin_count[me]++;
+      DEBUGASSERT(0 != g_irq_spin_count[me]);
+    }
+  else
+    {
+      spin_lock_wo_note(lock);
+    }
+
+  return ret;
+}
+
 /****************************************************************************
  * Name: spin_unlock_irqrestore
  *
@@ -156,4 +184,29 @@ void spin_unlock_irqrestore(spinlock_t *lock, irqstate_t flags)
   up_irq_restore(flags);
 }
 
+/****************************************************************************
+ * Name: spin_lock_irqsave_wo_note
+ ****************************************************************************/
+
+void spin_unlock_irqrestore_wo_note(spinlock_t *lock, irqstate_t flags)
+{
+  if (NULL == lock)
+    {
+      int me = this_cpu();
+      DEBUGASSERT(0 < g_irq_spin_count[me]);
+      g_irq_spin_count[me]--;
+
+      if (0 == g_irq_spin_count[me])
+        {
+          spin_unlock_wo_note(&g_irq_spin);
+        }
+    }
+  else
+    {
+      spin_unlock_wo_note(lock);
+    }
+
+  up_irq_restore(flags);
+}
+
 #endif /* CONFIG_SMP */