adaptive: implement proper kernel interface

Update syscalls, implement fixed-point parameter support.

1 files changed, 18 insertions, 6 deletions

diff --git a/include/adaptive.h b/include/adaptive.h
index a67c540..21e1dfd 100644
--- a/include/adaptive.h
+++ b/include/adaptive.h
@@ -1,23 +1,35 @@
 #ifndef ADAPTIVE_H
 #define ADAPTIVE_H
 
-#define MAX_SERVICE_LEVELS 10
+#define FP_SHIFT 16
+typedef struct
+{
+        long long val;
+} fp_t;
+
+static inline fp_t f2fp(double f)
+{
+        return (fp_t) {f * (1 << FP_SHIFT)};
+}
 
+#define MAX_SERVICE_LEVELS 10
 typedef struct {
-        unsigned long   exec_cost;      
+        fp_t            weight;
         unsigned long   period;
-        /* fixed point */
-        unsigned long   utility;
+        fp_t            value;
 } service_level_t;
 
 int set_service_levels(pid_t pid, 
                        unsigned int nr_levels,
-                       service_level_t* levels);
+                       service_level_t* levels,
+                       fp_t *wt_y, 
+                       fp_t *wt_slope);
 
 int get_cur_service_level(void);
 
 int create_adaptive_rt_task(rt_fn_t rt_prog, void *arg, 
-                            unsigned int no_levels, service_level_t* levels);
+                            unsigned int no_levels, service_level_t* levels,    
+                            fp_t wt_y, fp_t wt_slope);
 
 
 #endif