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Subject[RFC PATCH 08/19] lockdep: generate the state bit definitions
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@chello.nl>
---
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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