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Subject[PATCH 06/28] locking/lockdep: Update obsolete struct field description
Date
The lock_chain struct definition has outdated comment, update it and add
struct member description.

Signed-off-by: Yuyang Du <duyuyang@gmail.com>
---
include/linux/lockdep.h | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index 6e2377e..851d44f 100644
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
@@ -203,11 +203,17 @@ struct lock_list {
struct lock_list *parent;
};

-/*
- * We record lock dependency chains, so that we can cache them:
+/**
+ * struct lock_chain - lock dependency chain record
+ *
+ * @irq_context: the same as irq_context in held_lock below
+ * @depth: the number of held locks in this chain
+ * @base: the index in chain_hlocks for this chain
+ * @entry: the collided lock chains in lock_chain hash list
+ * @chain_key: the hash key of this lock_chain
*/
struct lock_chain {
- /* see BUILD_BUG_ON()s in lookup_chain_cache() */
+ /* see BUILD_BUG_ON()s in add_chain_cache() */
unsigned int irq_context : 2,
depth : 6,
base : 24;
--
1.8.3.1
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