---

yaml --- r: 41083 b: refs/heads/master c: ee3ce19 h: refs/heads/master i: 41081: 9b2bdcf 41079: 7bf53b9 v: v3
git-mirror · Nov 25, 2006 · 9469c7e · 9469c7e
1 parent 4d2c5a7
commit 9469c7e
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Showing 3 changed files with 77 additions and 15 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5e66b0b5f187c811419ff10cfb5668c028a64d57
+refs/heads/master: ee3ce191e8eaa4cc15c51a28b34143b36404c4f5
diff --git a/trunk/include/linux/irqflags.h b/trunk/include/linux/irqflags.h
@@ -11,6 +11,12 @@
 #ifndef _LINUX_TRACE_IRQFLAGS_H
 #define _LINUX_TRACE_IRQFLAGS_H
 
+#define BUILD_CHECK_IRQ_FLAGS(flags)					\
+	do {								\
+		BUILD_BUG_ON(sizeof(flags) != sizeof(unsigned long));	\
+		typecheck(unsigned long, flags);			\
+	} while (0)
+
 #ifdef CONFIG_TRACE_IRQFLAGS
   extern void trace_hardirqs_on(void);
   extern void trace_hardirqs_off(void);
@@ -50,10 +56,15 @@
 #define local_irq_disable() \
 	do { raw_local_irq_disable(); trace_hardirqs_off(); } while (0)
 #define local_irq_save(flags) \
-	do { raw_local_irq_save(flags); trace_hardirqs_off(); } while (0)
+	do {					\
+		BUILD_CHECK_IRQ_FLAGS(flags);	\
+		raw_local_irq_save(flags);	\
+		trace_hardirqs_off();		\
+	} while (0)
 
 #define local_irq_restore(flags)				\
 	do {							\
+		BUILD_CHECK_IRQ_FLAGS(flags);			\
 		if (raw_irqs_disabled_flags(flags)) {		\
 			raw_local_irq_restore(flags);		\
 			trace_hardirqs_off();			\
@@ -69,8 +80,16 @@
  */
 # define raw_local_irq_disable()	local_irq_disable()
 # define raw_local_irq_enable()		local_irq_enable()
-# define raw_local_irq_save(flags)	local_irq_save(flags)
-# define raw_local_irq_restore(flags)	local_irq_restore(flags)
+# define raw_local_irq_save(flags)		\
+	do {					\
+		BUILD_CHECK_IRQ_FLAGS(flags);	\
+		local_irq_save(flags);		\
+	} while (0)
+# define raw_local_irq_restore(flags)		\
+	do {					\
+		BUILD_CHECK_IRQ_FLAGS(flags);	\
+		local_irq_restore(flags);	\
+	} while (0)
 #endif /* CONFIG_TRACE_IRQFLAGS_SUPPORT */
 
 #ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT
@@ -80,7 +99,11 @@
 		raw_safe_halt();				\
 	} while (0)
 
-#define local_save_flags(flags)		raw_local_save_flags(flags)
+#define local_save_flags(flags)			\
+	do {					\
+		BUILD_CHECK_IRQ_FLAGS(flags);	\
+		raw_local_save_flags(flags);	\
+	} while (0)
 
 #define irqs_disabled()						\
 ({								\
@@ -90,7 +113,11 @@
 	raw_irqs_disabled_flags(flags);				\
 })
 
-#define irqs_disabled_flags(flags)	raw_irqs_disabled_flags(flags)
+#define irqs_disabled_flags(flags)	\
+({					\
+	BUILD_CHECK_IRQ_FLAGS(flags);	\
+	raw_irqs_disabled_flags(flags);	\
+})
 #endif		/* CONFIG_X86 */
 
 #endif
diff --git a/trunk/include/linux/spinlock.h b/trunk/include/linux/spinlock.h
@@ -52,6 +52,7 @@
 #include <linux/thread_info.h>
 #include <linux/kernel.h>
 #include <linux/stringify.h>
+#include <linux/irqflags.h>
 
 #include <asm/system.h>
 
@@ -183,13 +184,37 @@ do {								\
 #define read_lock(lock)			_read_lock(lock)
 
 #if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)
-#define spin_lock_irqsave(lock, flags)	flags = _spin_lock_irqsave(lock)
-#define read_lock_irqsave(lock, flags)	flags = _read_lock_irqsave(lock)
-#define write_lock_irqsave(lock, flags)	flags = _write_lock_irqsave(lock)
+#define spin_lock_irqsave(lock, flags)			\
+	do {						\
+		BUILD_CHECK_IRQ_FLAGS(flags);		\
+		flags = _spin_lock_irqsave(lock);	\
+	} while (0)
+#define read_lock_irqsave(lock, flags)			\
+	do {						\
+		BUILD_CHECK_IRQ_FLAGS(flags);		\
+		flags = _read_lock_irqsave(lock);	\
+	} while (0)
+#define write_lock_irqsave(lock, flags)			\
+	do {						\
+		BUILD_CHECK_IRQ_FLAGS(flags);		\
+		flags = _write_lock_irqsave(lock);	\
+	} while (0)
 #else
-#define spin_lock_irqsave(lock, flags)	_spin_lock_irqsave(lock, flags)
-#define read_lock_irqsave(lock, flags)	_read_lock_irqsave(lock, flags)
-#define write_lock_irqsave(lock, flags)	_write_lock_irqsave(lock, flags)
+#define spin_lock_irqsave(lock, flags)			\
+	do {						\
+		BUILD_CHECK_IRQ_FLAGS(flags);		\
+		_spin_lock_irqsave(lock, flags);	\
+	} while (0)
+#define read_lock_irqsave(lock, flags)			\
+	do {						\
+		BUILD_CHECK_IRQ_FLAGS(flags);		\
+		_read_lock_irqsave(lock, flags);	\
+	} while (0)
+#define write_lock_irqsave(lock, flags)			\
+	do {						\
+		BUILD_CHECK_IRQ_FLAGS(flags);		\
+		_write_lock_irqsave(lock, flags);	\
+	} while (0)
 #endif
 
 #define spin_lock_irq(lock)		_spin_lock_irq(lock)
@@ -225,15 +250,24 @@ do {								\
 #endif
 
 #define spin_unlock_irqrestore(lock, flags) \
-					_spin_unlock_irqrestore(lock, flags)
+	do {						\
+		BUILD_CHECK_IRQ_FLAGS(flags);		\
+		_spin_unlock_irqrestore(lock, flags);	\
+	} while (0)
 #define spin_unlock_bh(lock)		_spin_unlock_bh(lock)
 
 #define read_unlock_irqrestore(lock, flags) \
-					_read_unlock_irqrestore(lock, flags)
+	do {						\
+		BUILD_CHECK_IRQ_FLAGS(flags);		\
+		_read_unlock_irqrestore(lock, flags);	\
+	} while (0)
 #define read_unlock_bh(lock)		_read_unlock_bh(lock)
 
 #define write_unlock_irqrestore(lock, flags) \
-					_write_unlock_irqrestore(lock, flags)
+	do {						\
+		BUILD_CHECK_IRQ_FLAGS(flags);		\
+		_write_unlock_irqrestore(lock, flags);	\
+	} while (0)
 #define write_unlock_bh(lock)		_write_unlock_bh(lock)
 
 #define spin_trylock_bh(lock)	__cond_lock(lock, _spin_trylock_bh(lock))
@@ -247,6 +281,7 @@ do {								\
 
 #define spin_trylock_irqsave(lock, flags) \
 ({ \
+	BUILD_CHECK_IRQ_FLAGS(flags); \
 	local_irq_save(flags); \
 	spin_trylock(lock) ? \
 	1 : ({ local_irq_restore(flags); 0; }); \