From 9de8f0850ce4b34a849384d119fc9e5a6f3f8d17 Mon Sep 17 00:00:00 2001
From: "Bjoern B. Brandenburg" <bbb@cs.unc.edu>
Date: Fri, 5 Oct 2007 12:41:53 -0400
Subject: Implement user space adaptive task launching interface.
---
include/adaptive.h | 23 +++++++++++++++++++++++
include/litmus.h | 8 ++++++++
2 files changed, 31 insertions(+)
create mode 100644 include/adaptive.h
(limited to 'include')
diff --git a/include/adaptive.h b/include/adaptive.h
new file mode 100644
index 0000000..a67c540
--- /dev/null
+++ b/include/adaptive.h
@@ -0,0 +1,23 @@
+#ifndef ADAPTIVE_H
+#define ADAPTIVE_H
+
+#define MAX_SERVICE_LEVELS 10
+
+typedef struct {
+ unsigned long exec_cost;
+ unsigned long period;
+ /* fixed point */
+ unsigned long utility;
+} service_level_t;
+
+int set_service_levels(pid_t pid,
+ unsigned int nr_levels,
+ service_level_t* levels);
+
+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);
+
+
+#endif
diff --git a/include/litmus.h b/include/litmus.h
index 3595919..01503aa 100644
--- a/include/litmus.h
+++ b/include/litmus.h
@@ -8,6 +8,7 @@
#define CLONE_REALTIME 0x10000000
typedef int (*rt_fn_t)(void*);
+typedef int (*rt_setup_fn_t)(int pid, void* arg);
/* Litmus scheduling policies */
typedef enum {
@@ -99,6 +100,7 @@ void init_litmus(void);
#define exit_litmus() {}
+
int create_rt_task(rt_fn_t rt_prog, void *arg, int cpu, int wcet, int period);
int __create_rt_task(rt_fn_t rt_prog, void *arg, int cpu, int wcet,
int period, task_class_t cls);
@@ -111,4 +113,10 @@ void exit_np(void);
int litmus_task_active();
+
+/* low level operations, not intended for API use */
+int fork_rt(void);
+int __launch_rt_task(rt_fn_t rt_prog, void *rt_arg,
+ rt_setup_fn_t setup, void* setup_arg);
+
#endif
--
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