Add unlocked functions to common EDF code.

Allow access to the release and ready queues for GSN-EDF. GSN-EDF doesn't
use the locks embedded in the domain.

1 files changed, 25 insertions, 2 deletions

diff --git a/include/linux/edf_common.h b/include/linux/edf_common.h
index 9c00bb1937..7a222d419c 100644
--- a/include/linux/edf_common.h
+++ b/include/linux/edf_common.h
@@ -25,18 +25,41 @@ typedef struct _edf_domain {
         (list_entry((edf)->ready_queue.next, struct task_struct, rt_list))
 
 void edf_domain_init(edf_domain_t *edf, edf_check_resched_needed_t f);
-void  add_ready(edf_domain_t* edf, struct task_struct *new);
+
+void __add_ready(edf_domain_t* edf, struct task_struct *new);
+void __add_release(edf_domain_t* edf, struct task_struct *task);
+
 struct task_struct* __take_ready(edf_domain_t* edf);
-void add_release(edf_domain_t* edf, struct task_struct *task);
+
 void try_release_pending(edf_domain_t* edf);
 void __prepare_new_release(struct task_struct *t, jiffie_t start);
 #define prepare_new_release(t) __prepare_new_release(t, jiffies)
 void prepare_for_next_period(struct task_struct *t);
 void prepare_new_releases(edf_domain_t *edf, jiffie_t start);
+void __prepare_new_releases(edf_domain_t *edf, jiffie_t start);
 int preemption_needed(edf_domain_t* edf, struct task_struct *t);
 long edf_sleep_next_period(void);
 
 #define job_completed(t) (!is_be(t) && \
         (t)->rt_param.times.exec_time == (t)->rt_param.basic_params.exec_cost)
 
+static inline void add_ready(edf_domain_t* edf, struct task_struct *new)
+{
+        unsigned long flags;    
+        /* first we need the write lock for edf_ready_queue */  
+        write_lock_irqsave(&edf->ready_lock, flags);
+        __add_ready(edf, new);
+        write_unlock_irqrestore(&edf->ready_lock, flags);
+}
+
+static inline void add_release(edf_domain_t* edf, struct task_struct *task)
+{
+        unsigned long flags;    
+        /* first we need the write lock for edf_ready_queue */  
+        spin_lock_irqsave(&edf->release_lock, flags);
+        __add_release(edf, task);
+        spin_unlock_irqrestore(&edf->release_lock, flags);
+}
+
+
 #endif