rt-app: add delay thread property

Add a new thread property called 'delay' with which the initial starting
time of a thread can be delayed. Parameter is expressed in usec.

Usage is:

 "tasks" : {
   "thread0" : {
     ...
     "delay" : 1000000,
     ...
   }
 }

Signed-off-by: Juri Lelli <juri.lelli@arm.com>
Acked-by: Vincent Guittot <vincent.guittot@linaro.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/doc/tutorial.txt b/doc/tutorial.txt
index bb6734c..dfcc405 100644
--- a/doc/tutorial.txt
+++ b/doc/tutorial.txt
@@ -200,6 +200,9 @@ class. Default value is period. The unit is usec.
 * cpus: Array of Integer. Define the CPU affinity of the thread. Default
 value is all CPUs of the system. An example :  "cpus" : [0, 2, 3]
 
+* delay: Integer. Initial delay before a thread starts execution. The unit
+is usec.
+
 * phases: Object. The phases object described TBF
 
 If there is only 1 phase, the sequence of events can be directly put in the