Add syscall get_current_budget()

2 files changed, 17 insertions, 0 deletions

diff --git a/include/litmus.h b/include/litmus.h
index b9dbdb5..72f1ad4 100644
--- a/include/litmus.h
+++ b/include/litmus.h
@@ -402,6 +402,16 @@ static inline int open_dflp_sem(int fd, int name, int cpu)
 }
 
 /**
+ * Get budget information from the scheduler (in nanoseconds).
+ * @param expended pointer to time value in wich the total
+ *        amount of already used-up budget will be stored.
+ * @param remaining pointer to time value in wich the total
+ *        amount of remaining budget will be stored.
+ */
+
+int get_current_budget(lt_t *expended, lt_t *remaining);
+
+/**
  * Do nothing as a syscall
  * @param timestamp Cyclecount before calling
  * Can be used for syscall overhead measuring */
diff --git a/src/syscalls.c b/src/syscalls.c
index c68f15b..0ee1a80 100644
--- a/src/syscalls.c
+++ b/src/syscalls.c
@@ -86,3 +86,10 @@ int null_call(cycles_t *timestamp)
 {
         return syscall(__NR_null_call, timestamp);
 }
+
+int get_current_budget(
+        lt_t *expended,
+        lt_t *remaining)
+{
+        return syscall(__NR_get_current_budget, expended, remaining);
+}