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Subject[PATCH v3 10/18] locking/lockdep: Remove unused argument in validate_chain() and check_deadlock()
Date
The lockdep_map argument in them is not used, remove it.

Signed-off-by: Yuyang Du <duyuyang@gmail.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
---
kernel/locking/lockdep.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index f16d2f5..c7aec9f 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -2134,8 +2134,7 @@ static inline void inc_chains(void)
* Returns: 0 on deadlock detected, 1 on OK, 2 on recursive read
*/
static int
-check_deadlock(struct task_struct *curr, struct held_lock *next,
- struct lockdep_map *next_instance, int read)
+check_deadlock(struct task_struct *curr, struct held_lock *next, int read)
{
struct held_lock *prev;
struct held_lock *nest = NULL;
@@ -2698,8 +2697,9 @@ static inline int lookup_chain_cache_add(struct task_struct *curr,
return 1;
}

-static int validate_chain(struct task_struct *curr, struct lockdep_map *lock,
- struct held_lock *hlock, int chain_head, u64 chain_key)
+static int validate_chain(struct task_struct *curr,
+ struct held_lock *hlock,
+ int chain_head, u64 chain_key)
{
/*
* Trylock needs to maintain the stack of held locks, but it
@@ -2725,7 +2725,7 @@ static int validate_chain(struct task_struct *curr, struct lockdep_map *lock,
* any of these scenarios could lead to a deadlock. If
* All validations
*/
- int ret = check_deadlock(curr, hlock, lock, hlock->read);
+ int ret = check_deadlock(curr, hlock, hlock->read);

if (!ret)
return 0;
@@ -2756,8 +2756,8 @@ static int validate_chain(struct task_struct *curr, struct lockdep_map *lock,
}
#else
static inline int validate_chain(struct task_struct *curr,
- struct lockdep_map *lock, struct held_lock *hlock,
- int chain_head, u64 chain_key)
+ struct held_lock *hlock,
+ int chain_head, u64 chain_key)
{
return 1;
}
@@ -3733,7 +3733,7 @@ static int __lock_acquire(struct lockdep_map *lock, unsigned int subclass,
WARN_ON_ONCE(!hlock_class(hlock)->key);
}

- if (!validate_chain(curr, lock, hlock, chain_head, chain_key))
+ if (!validate_chain(curr, hlock, chain_head, chain_key))
return 0;

curr->curr_chain_key = chain_key;
--
1.8.3.1
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