uprobe: Support multiple call sites for the same uprobe event

[lttng-modules.git] / wrapper / spinlock.h

diff --git a/wrapper/spinlock.h b/wrapper/spinlock.h
index e38d3891216cc8a81272755fe32e951e78f27321..b3570d4080b0ceed82df1a99541bec2c164717c6 100644 (file)
--- a/wrapper/spinlock.h
+++ b/wrapper/spinlock.h
@@ -1,23 +1,34 @@
-#ifndef _LTT_WRAPPER_SPINLOCK_H
-#define _LTT_WRAPPER_SPINLOCK_H
-
-/*
- * Copyright (C) 2011 Mathieu Desnoyers (mathieu.desnoyers@efficios.com)
+/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
+ *
+ * wrapper/spinlock.h
  *
- * Dual LGPL v2.1/GPL v2 license.
+ * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  */
 
+#ifndef _LTTNG_WRAPPER_SPINLOCK_H
+#define _LTTNG_WRAPPER_SPINLOCK_H
+
 #include <linux/version.h>
 
 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33))
 
-#define raw_spin_lock_init(lock)                               \
-       do {                                                    \
-               *(lock) = __RAW_SPIN_LOCK_UNLOCKED;             \
+#include <linux/string.h>
+
+#define raw_spin_lock_init(lock)                                       \
+       do {                                                            \
+               raw_spinlock_t __lock = __RAW_SPIN_LOCK_UNLOCKED;       \
+               memcpy(lock, &__lock, sizeof(lock));                    \
        } while (0)
 
 #define raw_spin_is_locked(lock)       __raw_spin_is_locked(lock)
 
+#define wrapper_desc_spin_lock(lock)   spin_lock(lock)
+#define wrapper_desc_spin_unlock(lock) spin_unlock(lock)
+
+#else
+
+#define wrapper_desc_spin_lock(lock)   raw_spin_lock(lock)
+#define wrapper_desc_spin_unlock(lock) raw_spin_unlock(lock)
 
 #endif
-#endif /* _LTT_WRAPPER_SPINLOCK_H */
+#endif /* _LTTNG_WRAPPER_SPINLOCK_H */