Added some quantum alignment measurement capabilities, so that alignments

could be re-validated after some changes.

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/i386/kernel/apic.c b/arch/i386/kernel/apic.c
index dcf104b42c..953b49d51a 100644
--- a/arch/i386/kernel/apic.c
+++ b/arch/i386/kernel/apic.c
@@ -1282,6 +1282,11 @@ inline void smp_local_timer_interrupt(void)
         update_process_times(user_mode_vm(get_irq_regs()));
 #endif
 
+        /* Print out timing data - comment out if unneeded. */
+        s64 offset = get_nsec_offset();
+        int cpu = smp_processor_id();
+        sched_trace_log_message("%d %d\n", cpu, offset);
+
         /*
          * Synchronize quanta if we have reached qsync_time plus wait
          * interval. The synchronization code itself is placed in its own