3 files changed, 56 insertions, 45 deletions

diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index 6d729c9d1d27..5a58ea3e91e9 100644
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
@@ -20,51 +20,10 @@ struct lockdep_map;
 #include <linux/stacktrace.h>
 
 /*
- * Lock-class usage-state bits:
+ * We'd rather not expose kernel/lockdep_states.h this wide, but we do need
+ * the total number of states... :-(
  */
-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,
-        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_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 \
-                (LOCKF_USED_IN_HARDIRQ_READ | LOCKF_USED_IN_SOFTIRQ_READ)
+#define XXX_LOCK_USAGE_STATES           (1+3*4)
 
 #define MAX_LOCKDEP_SUBCLASSES          8UL
 
@@ -105,7 +64,7 @@ struct lock_class {
          * IRQ/softirq usage tracking bits:
          */
         unsigned long                   usage_mask;
-        struct stack_trace              usage_traces[LOCK_USAGE_STATES];
+        struct stack_trace              usage_traces[XXX_LOCK_USAGE_STATES];
 
         /*
          * These fields represent a directed graph of lock dependencies,
diff --git a/kernel/lockdep_internals.h b/kernel/lockdep_internals.h
index e887b783244f..1352409cfef1 100644
--- a/kernel/lockdep_internals.h
+++ b/kernel/lockdep_internals.h
@@ -7,6 +7,52 @@
  */
 
 /*
+ * 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,
+        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_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 \
+                (LOCKF_USED_IN_HARDIRQ_READ | LOCKF_USED_IN_SOFTIRQ_READ)
+
+/*
  * MAX_LOCKDEP_ENTRIES is the maximum number of lock dependencies
  * we track.
  *
diff --git a/kernel/lockdep_states.h b/kernel/lockdep_states.h
index 937039ef2dd0..995b0cc2b84c 100644
--- a/kernel/lockdep_states.h
+++ b/kernel/lockdep_states.h
@@ -1,3 +1,9 @@
+/*
+ * Lockdep states,
+ *
+ * please update XXX_LOCK_USAGE_STATES in include/linux/lockdep.h whenever
+ * you add one, or come up with a nice dynamic solution.
+ */
 LOCKDEP_STATE(HARDIRQ)
 LOCKDEP_STATE(SOFTIRQ)
 LOCKDEP_STATE(RECLAIM_FS)