Fix build of sched instrumentation on linux-rt >= 4.9.27-rt8

--- a/include/instrumentation/events/sched.h
+++ b/include/instrumentation/events/sched.h
@@ -596,7 +596,8 @@
 
 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,12,0) || \
 	LTTNG_RT_KERNEL_RANGE(4,9,27,18, 4,10,0,0) || \
-	LTTNG_RT_KERNEL_RANGE(4,11,5,1, 4,12,0,0))
+	LTTNG_RT_KERNEL_RANGE(4,11,5,1, 4,12,0,0) || \
+	(LTTNG_KERNEL_RANGE(4,9,27, 4,10,0) && defined(CONFIG_PREEMPT_RT_FULL)))
 /*
  * Tracepoint for showing priority inheritance modifying a tasks
  * priority.