lockdep: move state bit definitions around

For convenience later.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2 files changed, 52 insertions, 0 deletions

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)