Implementation of Adaptive-EDZL

This patch introduces the Adaptive-EDZL (AEDZL) scheduler.  AEDZL
uses feedback-control to estimate job execution time.  This improves
the detection of zero-laxity points if WCETs are not tight.

1 files changed, 13 insertions, 0 deletions

diff --git a/include/litmus/rt_param.h b/include/litmus/rt_param.h
index 53741727d5d0..d1a1f6ab523a 100644
--- a/include/litmus/rt_param.h
+++ b/include/litmus/rt_param.h
@@ -33,6 +33,14 @@ typedef enum {
         PRECISE_ENFORCEMENT  /* NOT IMPLEMENTED - enforced with hrtimers */
 } budget_policy_t;
 
+#ifdef CONFIG_PLUGIN_AEDZL
+typedef long fpbuf_t;
+typedef struct
+{
+        fpbuf_t val;
+} fp_t;
+#endif
+
 struct rt_task {
         lt_t            exec_cost;
         lt_t            period;
@@ -40,6 +48,11 @@ struct rt_task {
         unsigned int    cpu;
         task_class_t    cls;
         budget_policy_t budget_policy; /* ignored by pfair */
+
+#ifdef CONFIG_PLUGIN_AEDZL
+        fp_t            util_est;
+        fp_t            accum_err;
+#endif
 };
 
 /* The definition of the data that is shared between the kernel and real-time