This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / include / linux / spinlock_types.h

diff --git a/include/linux/spinlock_types.h b/include/linux/spinlock_types.h
new file mode 100644 (file)
index 0000000..9cb51e0
--- /dev/null
+++ b/include/linux/spinlock_types.h
@@ -0,0 +1,67 @@
+#ifndef __LINUX_SPINLOCK_TYPES_H
+#define __LINUX_SPINLOCK_TYPES_H
+
+/*
+ * include/linux/spinlock_types.h - generic spinlock type definitions
+ *                                  and initializers
+ *
+ * portions Copyright 2005, Red Hat, Inc., Ingo Molnar
+ * Released under the General Public License (GPL).
+ */
+
+#if defined(CONFIG_SMP)
+# include <asm/spinlock_types.h>
+#else
+# include <linux/spinlock_types_up.h>
+#endif
+
+typedef struct {
+       raw_spinlock_t raw_lock;
+#if defined(CONFIG_PREEMPT) && defined(CONFIG_SMP)
+       unsigned int break_lock;
+#endif
+#ifdef CONFIG_DEBUG_SPINLOCK
+       unsigned int magic, owner_cpu;
+       void *owner;
+#endif
+} spinlock_t;
+
+#define SPINLOCK_MAGIC         0xdead4ead
+
+typedef struct {
+       raw_rwlock_t raw_lock;
+#if defined(CONFIG_PREEMPT) && defined(CONFIG_SMP)
+       unsigned int break_lock;
+#endif
+#ifdef CONFIG_DEBUG_SPINLOCK
+       unsigned int magic, owner_cpu;
+       void *owner;
+#endif
+} rwlock_t;
+
+#define RWLOCK_MAGIC           0xdeaf1eed
+
+#define SPINLOCK_OWNER_INIT    ((void *)-1L)
+
+#ifdef CONFIG_DEBUG_SPINLOCK
+# define SPIN_LOCK_UNLOCKED                                            \
+       (spinlock_t)    {       .raw_lock = __RAW_SPIN_LOCK_UNLOCKED,   \
+                               .magic = SPINLOCK_MAGIC,                \
+                               .owner = SPINLOCK_OWNER_INIT,           \
+                               .owner_cpu = -1 }
+#define RW_LOCK_UNLOCKED                                               \
+       (rwlock_t)      {       .raw_lock = __RAW_RW_LOCK_UNLOCKED,     \
+                               .magic = RWLOCK_MAGIC,                  \
+                               .owner = SPINLOCK_OWNER_INIT,           \
+                               .owner_cpu = -1 }
+#else
+# define SPIN_LOCK_UNLOCKED \
+       (spinlock_t)    {       .raw_lock = __RAW_SPIN_LOCK_UNLOCKED }
+#define RW_LOCK_UNLOCKED \
+       (rwlock_t)      {       .raw_lock = __RAW_RW_LOCK_UNLOCKED }
+#endif
+
+#define DEFINE_SPINLOCK(x)     spinlock_t x = SPIN_LOCK_UNLOCKED
+#define DEFINE_RWLOCK(x)       rwlock_t x = RW_LOCK_UNLOCKED
+
+#endif /* __LINUX_SPINLOCK_TYPES_H */