init/main.c |    9 +++++++++
 1 files changed, 9 insertions(+)

Index: linux-latency-tracing.q/init/main.c
===================================================================
--- linux-latency-tracing.q.orig/init/main.c
+++ linux-latency-tracing.q/init/main.c
@@ -108,6 +108,8 @@ extern void tc_init(void);
 enum system_states system_state;
 EXPORT_SYMBOL(system_state);
 
+extern unsigned long preempt_max_latency;
+
 /*
  * Boot command-line arguments
  */
@@ -544,6 +546,13 @@ asmlinkage void __init start_kernel(void
 
 	acpi_early_init(); /* before LAPIC and SMP init */
 
+#ifdef CONFIG_LATENCY_TIMING
+	/*
+	 * Start tracing now - the bootup traces arent too interesting:
+	 */
+	preempt_max_latency = 1000;
+#endif
+
 	/* Do the rest non-__init'ed, we're now alive */
 	rest_init();
 }