Make sure priority-boosting is in effect

... before virtual spinning starts. This avoids a virtually spinning
job from being preempted by a newly released job just before
a global request is issued.

1 files changed, 5 insertions, 5 deletions

diff --git a/litmus/sched_pfp.c b/litmus/sched_pfp.c
index 227efe20d3da..2b755ecab76e 100644
--- a/litmus/sched_pfp.c
+++ b/litmus/sched_pfp.c
@@ -650,6 +650,11 @@ int pfp_mpcp_lock(struct litmus_lock* l)
 
         preempt_disable();
 
+        /* Priority-boost ourself *before* we suspend so that
+         * our priority is boosted when we resume. Use the priority
+         * ceiling for the local partition. */
+        boost_priority(t, sem->prio_ceiling[get_partition(t)]);
+
         if (sem->vspin)
                 mpcp_vspin_enter();
 
@@ -657,11 +662,6 @@ int pfp_mpcp_lock(struct litmus_lock* l)
 
         preempt_enable_no_resched();
 
-        /* Priority-boost ourself *before* we suspend so that
-         * our priority is boosted when we resume. Use the priority
-         * ceiling for the local partition. */
-        boost_priority(t, sem->prio_ceiling[get_partition(t)]);
-
         if (sem->owner) {
                 /* resource is not free => must suspend and wait */