[RFC PATCH 08/19] lockdep: generate the state bit definitions

[Peter Zijlstra]

Generate the state bit definitions from the lockdep_states.h file.

Also, move LOCK_USED to last, so that the 

 USED_IN
 USED_IN_READ
 ENABLED
 ENABLED_READ

states are nicely bit aligned -- we're going to use that property

Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
---
 kernel/lockdep_internals.h |   47 +++++++++++++++++++--------------------------
 1 file changed, 20 insertions(+), 27 deletions(-)

Index: linux-2.6/kernel/lockdep_internals.h
===================================================================
--- linux-2.6.orig/kernel/lockdep_internals.h
+++ linux-2.6/kernel/lockdep_internals.h
@@ -10,43 +10,36 @@
  * Lock-class usage-state bits:
  */
 enum lock_usage_bit {
-	LOCK_USED = 0,
-	LOCK_USED_IN_HARDIRQ,
-	LOCK_USED_IN_SOFTIRQ,
-	LOCK_USED_IN_RECLAIM_FS,
-	LOCK_ENABLED_SOFTIRQ,
-	LOCK_ENABLED_HARDIRQ,
-	LOCK_ENABLED_RECLAIM_FS,
-	LOCK_USED_IN_HARDIRQ_READ,
-	LOCK_USED_IN_SOFTIRQ_READ,
-	LOCK_USED_IN_RECLAIM_FS_READ,
-	LOCK_ENABLED_SOFTIRQ_READ,
-	LOCK_ENABLED_HARDIRQ_READ,
-	LOCK_ENABLED_RECLAIM_FS_READ,
+#define LOCKDEP_STATE(__STATE)		\
+	LOCK_USED_IN_##__STATE,		\
+	LOCK_USED_IN_##__STATE##_READ,	\
+	LOCK_ENABLED_##__STATE,		\
+	LOCK_ENABLED_##__STATE##_READ,
+#include "lockdep_states.h"
+#undef LOCKDEP_STATE
+	LOCK_USED,
 	LOCK_USAGE_STATES
 };
 
 /*
  * Usage-state bitmasks:
  */
-#define LOCKF_USED			(1 << LOCK_USED)
-#define LOCKF_USED_IN_HARDIRQ		(1 << LOCK_USED_IN_HARDIRQ)
-#define LOCKF_USED_IN_SOFTIRQ		(1 << LOCK_USED_IN_SOFTIRQ)
-#define LOCKF_USED_IN_RECLAIM_FS	(1 << LOCK_USED_IN_RECLAIM_FS)
-#define LOCKF_ENABLED_HARDIRQ		(1 << LOCK_ENABLED_HARDIRQ)
-#define LOCKF_ENABLED_SOFTIRQ		(1 << LOCK_ENABLED_SOFTIRQ)
-#define LOCKF_ENABLED_RECLAIM_FS	(1 << LOCK_ENABLED_RECLAIM_FS)
+#define __LOCKF(__STATE)	LOCKF_##__STATE = (1 << LOCK_##__STATE),
+
+enum {
+#define LOCKDEP_STATE(__STATE)						\
+	__LOCKF(USED_IN_##__STATE)					\
+	__LOCKF(USED_IN_##__STATE##_READ)				\
+	__LOCKF(ENABLED_##__STATE)					\
+	__LOCKF(ENABLED_##__STATE##_READ)
+#include "lockdep_states.h"
+#undef LOCKDEP_STATE
+	__LOCKF(USED)
+};
 
 #define LOCKF_ENABLED_IRQ (LOCKF_ENABLED_HARDIRQ | LOCKF_ENABLED_SOFTIRQ)
 #define LOCKF_USED_IN_IRQ (LOCKF_USED_IN_HARDIRQ | LOCKF_USED_IN_SOFTIRQ)
 
-#define LOCKF_USED_IN_HARDIRQ_READ	(1 << LOCK_USED_IN_HARDIRQ_READ)
-#define LOCKF_USED_IN_SOFTIRQ_READ	(1 << LOCK_USED_IN_SOFTIRQ_READ)
-#define LOCKF_USED_IN_RECLAIM_FS_READ	(1 << LOCK_USED_IN_RECLAIM_FS_READ)
-#define LOCKF_ENABLED_HARDIRQ_READ	(1 << LOCK_ENABLED_HARDIRQ_READ)
-#define LOCKF_ENABLED_SOFTIRQ_READ	(1 << LOCK_ENABLED_SOFTIRQ_READ)
-#define LOCKF_ENABLED_RECLAIM_FS_READ	(1 << LOCK_ENABLED_RECLAIM_FS_READ)
-
 #define LOCKF_ENABLED_IRQ_READ \
 		(LOCKF_ENABLED_HARDIRQ_READ | LOCKF_ENABLED_SOFTIRQ_READ)
 #define LOCKF_USED_IN_IRQ_READ \

-- 

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