Added support for choices in budget policy enforcement.

NO_ENFORCEMENT - A job may execute beyond its declared execution time.
  Jobs notify the kernel that they are complete via liblitmus's
  sleep_next_period()
QUANTUM_ENFORCEMENT - The kernel terminates a job if its actual execution
  time exceeds the declared execution time.
PRECISE_ENFORCEMENT - Hook declared, but not yet implemented.  Plan to
  support this policy through hrtimers.  Error thrown if specified.

1 files changed, 4 insertions, 2 deletions

diff --git a/litmus/sched_gsn_edf.c b/litmus/sched_gsn_edf.c
index 7424c183d8b2..c0c63eba70ce 100644
--- a/litmus/sched_gsn_edf.c
+++ b/litmus/sched_gsn_edf.c
@@ -336,7 +336,7 @@ static noinline void job_completion(struct task_struct *t, int forced)
  */
 static void gsnedf_tick(struct task_struct* t)
 {
-        if (is_realtime(t) && budget_exhausted(t)) {
+        if (is_realtime(t) && budget_enforced(t) && budget_exhausted(t)) {
                 if (!is_np(t)) {
                         /* np tasks will be preempted when they become
                          * preemptable again
@@ -399,7 +399,9 @@ static struct task_struct* gsnedf_schedule(struct task_struct * prev)
         /* (0) Determine state */
         exists      = entry->scheduled != NULL;
         blocks      = exists && !is_running(entry->scheduled);
-        out_of_time = exists && budget_exhausted(entry->scheduled);
+        out_of_time = exists &&
+                                  budget_enforced(entry->scheduled) &&
+                                  budget_exhausted(entry->scheduled);
         np          = exists && is_np(entry->scheduled);
         sleep       = exists && get_rt_flags(entry->scheduled) == RT_F_SLEEP;
         preempt     = entry->scheduled != entry->linked;