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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2009-01-22 14:18:40 +0100
committerIngo Molnar <mingo@elte.hu>2009-02-14 23:27:59 +0100
commit9851673bc32bc9fcafbbaeffc858ead434bd6d58 (patch)
tree96272ea6db6c2e38b35c86668abd2290bd18df9f /kernel
parent5346417e17daf5a7712e4cf030b45414e46607cf (diff)
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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>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/lockdep_internals.h46
-rw-r--r--kernel/lockdep_states.h6
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)