configs: add option for repeatedly switching back-and-forth between cpu types.

This patch adds a --repeat-switch option that will enable repeat core
switching at a user defined period (set with --switch-freq option).
currently, a switch can only occur between like CPU types. inorder CPU
switching is not supported.

*note*
this patch simply allows a config that will perform repeat switching, it
does not fix drain/switchout functionality. if you run with repeat switching
you will hit assertion failures and/or your workload with hang or die.

1 files changed, 6 insertions, 5 deletions

diff --git a/configs/common/Options.py b/configs/common/Options.py
index c625ab179..6f7059f26 100644
--- a/configs/common/Options.py
+++ b/configs/common/Options.py
@@ -104,11 +104,12 @@ def addCommonOptions(parser):
     # CPU Switching - default switch model goes from a checkpoint
     # to a timing simple CPU with caches to warm up, then to detailed CPU for
     # data measurement
-    parser.add_option("-s", "--standard-switch", action="store_true",
-        help="switch from timing CPU to Detailed CPU")
-    parser.add_option("-w", "--warmup", action="store", type="int",
-        help="if -s, then this is the warmup period.  else, this is ignored",
-        default=5000000000)
+    parser.add_option("--repeat-switch", action="store", type="int",
+        default=None,
+        help="switch back and forth between CPUs with period <N>")
+    parser.add_option("-s", "--standard-switch", action="store", type="int",
+        default=None,
+        help="switch from timing to Detailed CPU after warmup period of <N>")
     parser.add_option("-p", "--prog-interval", type="int",
         help="CPU Progress Interval")