Make release master support optional

Introduces CONFIG_RELEASE_MASTER and makes release
master support dependent on the new symbol. This is
useful because dedicated interrupt handling only applies
to "large" multicore platforms. This will allow us to
not implement smp_send_pull_timers() for all platforms.

2 files changed, 8 insertions, 0 deletions

diff --git a/include/litmus/litmus.h b/include/litmus/litmus.h
index d515d1af1096..674528eece14 100644
--- a/include/litmus/litmus.h
+++ b/include/litmus/litmus.h
@@ -9,7 +9,9 @@
 #include <linux/jiffies.h>
 #include <litmus/sched_trace.h>
 
+#ifdef CONFIG_RELEASE_MASTER
 extern atomic_t release_master_cpu;
+#endif
 
 extern atomic_t __log_seq_no;
 
diff --git a/include/litmus/rt_domain.h b/include/litmus/rt_domain.h
index 9bf980713474..59e6b54e9281 100644
--- a/include/litmus/rt_domain.h
+++ b/include/litmus/rt_domain.h
@@ -28,7 +28,10 @@ typedef struct _rt_domain {
         /* real-time tasks waiting for release are in here */
         raw_spinlock_t                  release_lock;
         struct release_queue            release_queue;
+
+#ifdef CONFIG_RELEASE_MASTER
         int                             release_master;
+#endif
 
         /* for moving tasks to the release queue */
         raw_spinlock_t                  tobe_lock;
@@ -52,8 +55,11 @@ struct release_heap {
         struct bheap                    heap;
         /* used to trigger the release */
         struct hrtimer                  timer;
+
+#ifdef CONFIG_RELEASE_MASTER
         /* used to delegate releases */
         struct hrtimer_start_on_info    info;
+#endif
         /* required for the timer callback */
         rt_domain_t*                    dom;
 };