Feather-Trace: cosmetic change in latency callback

Have symbol for traced delta. This is a purely cosmetic change that
makes it easier to stick in a WARN_ON() during debugging...

1 files changed, 2 insertions, 1 deletions

diff --git a/litmus/trace.c b/litmus/trace.c
index 99846039286e..1dcb9a65b480 100644
--- a/litmus/trace.c
+++ b/litmus/trace.c
@@ -263,11 +263,12 @@ feather_callback void save_cpu_task_latency(unsigned long event,
 {
         lt_t now = litmus_clock();
         lt_t *when = (lt_t*) when_ptr;
+        lt_t delta = now - *when;
 
         write_cpu_timestamp(event, TSK_RT,
                             0,
                             0, LOCAL_IRQ_COUNT, 0,
-                            now - *when, DO_NOT_RECORD_TIMESTAMP);
+                            delta, DO_NOT_RECORD_TIMESTAMP);
 }
 
 /* Record to remote trace buffer */