Commit-ID: d16dbd1b8a29bb9f8aca2c2f3bd1a0d2b7621126
Gitweb: https://git.kernel.org/tip/d16dbd1b8a29bb9f8aca2c2f3bd1a0d2b7621126
Author: Yuyang Du <duyuyang@xxxxxxxxx>
AuthorDate: Mon, 6 May 2019 16:19:22 +0800
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Mon, 3 Jun 2019 11:55:41 +0200
locking/lockdep: Update obsolete struct field description
The lock_chain struct definition has outdated comment, update it and add
struct member description.
Signed-off-by: Yuyang Du <duyuyang@xxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: bvanassche@xxxxxxx
Cc: frederic@xxxxxxxxxx
Cc: ming.lei@xxxxxxxxxx
Cc: will.deacon@xxxxxxx
Link: https://lkml.kernel.org/r/20190506081939.74287-7-duyuyang@xxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
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 6e2377e6c1d6..851d44fa5457 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;
|