Add time stamps for schedule(), the timer interrupt, and the plugin

scheduler_tick() and schedule() callbacks.

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/i386/kernel/apic.c b/arch/i386/kernel/apic.c
index f8c5f2abd2..2e8909f570 100644
--- a/arch/i386/kernel/apic.c
+++ b/arch/i386/kernel/apic.c
@@ -44,6 +44,8 @@
 
 #include "io_ports.h"
 
+#include <linux/trace.h>
+
 /*
  * cpu_mask that denotes the CPUs that needs timer interrupt coming in as
  * IPIs in place of local APIC timers
@@ -1279,6 +1281,8 @@ inline void smp_local_timer_interrupt(void)
 {
 /*      s64 offset; */
 
+        TS_TICK_START;
+
         profile_tick(CPU_PROFILING);
 #ifdef CONFIG_SMP
         update_process_times(user_mode_vm(get_irq_regs()));
@@ -1311,6 +1315,7 @@ inline void smp_local_timer_interrupt(void)
          * Currently this isn't too much of an issue (performance wise),
          * we can take more than 100K local irqs per second on a 100 MHz P5.
          */
+        TS_TICK_END;
 }
 
 /*