Index: linux-2.6.20-rt5/kernel/sched.c
===================================================================
--- linux-2.6.20-rt5.orig/kernel/sched.c	2007-02-13 00:02:07.000000000 -0500
+++ linux-2.6.20-rt5/kernel/sched.c	2007-02-13 00:02:54.000000000 -0500
@@ -57,6 +57,8 @@
 #include <linux/delayacct.h>
 #include <asm/tlb.h>
 
+#include <linux/logdev.h>
+
 #include <asm/unistd.h>
 
 /*
@@ -2251,6 +2253,8 @@ context_switch(struct rq *rq, struct tas
 	*current_ptr = next;
 	*current_ti_ptr = next->thread_info;
 #endif
+	logdev_record_switch(prev, next);
+
 	/* Here we just switch the register state and the stack. */
 	switch_to(prev, next, prev);