Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / kernel / locking / mutex.h

diff --git a/kernel/kernel/locking/mutex.h b/kernel/kernel/locking/mutex.h
new file mode 100644 (file)
index 0000000..5cda397
--- /dev/null
+++ b/kernel/kernel/locking/mutex.h
@@ -0,0 +1,48 @@
+/*
+ * Mutexes: blocking mutual exclusion locks
+ *
+ * started by Ingo Molnar:
+ *
+ *  Copyright (C) 2004, 2005, 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
+ *
+ * This file contains mutex debugging related internal prototypes, for the
+ * !CONFIG_DEBUG_MUTEXES case. Most of them are NOPs:
+ */
+
+#define spin_lock_mutex(lock, flags) \
+               do { spin_lock(lock); (void)(flags); } while (0)
+#define spin_unlock_mutex(lock, flags) \
+               do { spin_unlock(lock); (void)(flags); } while (0)
+#define mutex_remove_waiter(lock, waiter, ti) \
+               __list_del((waiter)->list.prev, (waiter)->list.next)
+
+#ifdef CONFIG_MUTEX_SPIN_ON_OWNER
+static inline void mutex_set_owner(struct mutex *lock)
+{
+       lock->owner = current;
+}
+
+static inline void mutex_clear_owner(struct mutex *lock)
+{
+       lock->owner = NULL;
+}
+#else
+static inline void mutex_set_owner(struct mutex *lock)
+{
+}
+
+static inline void mutex_clear_owner(struct mutex *lock)
+{
+}
+#endif
+
+#define debug_mutex_wake_waiter(lock, waiter)          do { } while (0)
+#define debug_mutex_free_waiter(waiter)                        do { } while (0)
+#define debug_mutex_add_waiter(lock, waiter, ti)       do { } while (0)
+#define debug_mutex_unlock(lock)                       do { } while (0)
+#define debug_mutex_init(lock, name, key)              do { } while (0)
+
+static inline void
+debug_mutex_lock_common(struct mutex *lock, struct mutex_waiter *waiter)
+{
+}