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Diffstat (limited to 'kernel/locking/rtmutex.c')
-rw-r--r--kernel/locking/rtmutex.c64
1 files changed, 33 insertions, 31 deletions
diff --git a/kernel/locking/rtmutex.c b/kernel/locking/rtmutex.c
index cd0e1a43b07a..b31f6cbe3a30 100644
--- a/kernel/locking/rtmutex.c
+++ b/kernel/locking/rtmutex.c
@@ -48,7 +48,7 @@
*/
static __always_inline void
-rt_mutex_set_owner(struct rt_mutex *lock, struct task_struct *owner)
+rt_mutex_set_owner(struct rt_mutex_base *lock, struct task_struct *owner)
{
unsigned long val = (unsigned long)owner;
@@ -58,13 +58,13 @@ rt_mutex_set_owner(struct rt_mutex *lock, struct task_struct *owner)
WRITE_ONCE(lock->owner, (struct task_struct *)val);
}
-static __always_inline void clear_rt_mutex_waiters(struct rt_mutex *lock)
+static __always_inline void clear_rt_mutex_waiters(struct rt_mutex_base *lock)
{
lock->owner = (struct task_struct *)
((unsigned long)lock->owner & ~RT_MUTEX_HAS_WAITERS);
}
-static __always_inline void fixup_rt_mutex_waiters(struct rt_mutex *lock)
+static __always_inline void fixup_rt_mutex_waiters(struct rt_mutex_base *lock)
{
unsigned long owner, *p = (unsigned long *) &lock->owner;
@@ -139,14 +139,14 @@ static __always_inline void fixup_rt_mutex_waiters(struct rt_mutex *lock)
* set up.
*/
#ifndef CONFIG_DEBUG_RT_MUTEXES
-static __always_inline bool rt_mutex_cmpxchg_acquire(struct rt_mutex *lock,
+static __always_inline bool rt_mutex_cmpxchg_acquire(struct rt_mutex_base *lock,
struct task_struct *old,
struct task_struct *new)
{
return try_cmpxchg_acquire(&lock->owner, &old, new);
}
-static __always_inline bool rt_mutex_cmpxchg_release(struct rt_mutex *lock,
+static __always_inline bool rt_mutex_cmpxchg_release(struct rt_mutex_base *lock,
struct task_struct *old,
struct task_struct *new)
{
@@ -158,7 +158,7 @@ static __always_inline bool rt_mutex_cmpxchg_release(struct rt_mutex *lock,
* all future threads that attempt to [Rmw] the lock to the slowpath. As such
* relaxed semantics suffice.
*/
-static __always_inline void mark_rt_mutex_waiters(struct rt_mutex *lock)
+static __always_inline void mark_rt_mutex_waiters(struct rt_mutex_base *lock)
{
unsigned long owner, *p = (unsigned long *) &lock->owner;
@@ -174,7 +174,7 @@ static __always_inline void mark_rt_mutex_waiters(struct rt_mutex *lock)
* 2) Drop lock->wait_lock
* 3) Try to unlock the lock with cmpxchg
*/
-static __always_inline bool unlock_rt_mutex_safe(struct rt_mutex *lock,
+static __always_inline bool unlock_rt_mutex_safe(struct rt_mutex_base *lock,
unsigned long flags)
__releases(lock->wait_lock)
{
@@ -210,7 +210,7 @@ static __always_inline bool unlock_rt_mutex_safe(struct rt_mutex *lock,
}
#else
-static __always_inline bool rt_mutex_cmpxchg_acquire(struct rt_mutex *lock,
+static __always_inline bool rt_mutex_cmpxchg_acquire(struct rt_mutex_base *lock,
struct task_struct *old,
struct task_struct *new)
{
@@ -218,14 +218,14 @@ static __always_inline bool rt_mutex_cmpxchg_acquire(struct rt_mutex *lock,
}
-static __always_inline bool rt_mutex_cmpxchg_release(struct rt_mutex *lock,
+static __always_inline bool rt_mutex_cmpxchg_release(struct rt_mutex_base *lock,
struct task_struct *old,
struct task_struct *new)
{
return false;
}
-static __always_inline void mark_rt_mutex_waiters(struct rt_mutex *lock)
+static __always_inline void mark_rt_mutex_waiters(struct rt_mutex_base *lock)
{
lock->owner = (struct task_struct *)
((unsigned long)lock->owner | RT_MUTEX_HAS_WAITERS);
@@ -234,7 +234,7 @@ static __always_inline void mark_rt_mutex_waiters(struct rt_mutex *lock)
/*
* Simple slow path only version: lock->owner is protected by lock->wait_lock.
*/
-static __always_inline bool unlock_rt_mutex_safe(struct rt_mutex *lock,
+static __always_inline bool unlock_rt_mutex_safe(struct rt_mutex_base *lock,
unsigned long flags)
__releases(lock->wait_lock)
{
@@ -295,13 +295,13 @@ static __always_inline bool __waiter_less(struct rb_node *a, const struct rb_nod
}
static __always_inline void
-rt_mutex_enqueue(struct rt_mutex *lock, struct rt_mutex_waiter *waiter)
+rt_mutex_enqueue(struct rt_mutex_base *lock, struct rt_mutex_waiter *waiter)
{
rb_add_cached(&waiter->tree_entry, &lock->waiters, __waiter_less);
}
static __always_inline void
-rt_mutex_dequeue(struct rt_mutex *lock, struct rt_mutex_waiter *waiter)
+rt_mutex_dequeue(struct rt_mutex_base *lock, struct rt_mutex_waiter *waiter)
{
if (RB_EMPTY_NODE(&waiter->tree_entry))
return;
@@ -369,7 +369,7 @@ rt_mutex_cond_detect_deadlock(struct rt_mutex_waiter *waiter,
return chwalk == RT_MUTEX_FULL_CHAINWALK;
}
-static __always_inline struct rt_mutex *task_blocked_on_lock(struct task_struct *p)
+static __always_inline struct rt_mutex_base *task_blocked_on_lock(struct task_struct *p)
{
return p->pi_blocked_on ? p->pi_blocked_on->lock : NULL;
}
@@ -439,15 +439,15 @@ static __always_inline struct rt_mutex *task_blocked_on_lock(struct task_struct
*/
static int __sched rt_mutex_adjust_prio_chain(struct task_struct *task,
enum rtmutex_chainwalk chwalk,
- struct rt_mutex *orig_lock,
- struct rt_mutex *next_lock,
+ struct rt_mutex_base *orig_lock,
+ struct rt_mutex_base *next_lock,
struct rt_mutex_waiter *orig_waiter,
struct task_struct *top_task)
{
struct rt_mutex_waiter *waiter, *top_waiter = orig_waiter;
struct rt_mutex_waiter *prerequeue_top_waiter;
int ret = 0, depth = 0;
- struct rt_mutex *lock;
+ struct rt_mutex_base *lock;
bool detect_deadlock;
bool requeue = true;
@@ -795,7 +795,7 @@ static int __sched rt_mutex_adjust_prio_chain(struct task_struct *task,
* callsite called task_blocked_on_lock(), otherwise NULL
*/
static int __sched
-try_to_take_rt_mutex(struct rt_mutex *lock, struct task_struct *task,
+try_to_take_rt_mutex(struct rt_mutex_base *lock, struct task_struct *task,
struct rt_mutex_waiter *waiter)
{
lockdep_assert_held(&lock->wait_lock);
@@ -913,14 +913,14 @@ takeit:
*
* This must be called with lock->wait_lock held and interrupts disabled
*/
-static int __sched task_blocks_on_rt_mutex(struct rt_mutex *lock,
+static int __sched task_blocks_on_rt_mutex(struct rt_mutex_base *lock,
struct rt_mutex_waiter *waiter,
struct task_struct *task,
enum rtmutex_chainwalk chwalk)
{
struct task_struct *owner = rt_mutex_owner(lock);
struct rt_mutex_waiter *top_waiter = waiter;
- struct rt_mutex *next_lock;
+ struct rt_mutex_base *next_lock;
int chain_walk = 0, res;
lockdep_assert_held(&lock->wait_lock);
@@ -1003,7 +1003,7 @@ static int __sched task_blocks_on_rt_mutex(struct rt_mutex *lock,
* Called with lock->wait_lock held and interrupts disabled.
*/
static void __sched mark_wakeup_next_waiter(struct wake_q_head *wake_q,
- struct rt_mutex *lock)
+ struct rt_mutex_base *lock)
{
struct rt_mutex_waiter *waiter;
@@ -1052,12 +1052,12 @@ static void __sched mark_wakeup_next_waiter(struct wake_q_head *wake_q,
* Must be called with lock->wait_lock held and interrupts disabled. I must
* have just failed to try_to_take_rt_mutex().
*/
-static void __sched remove_waiter(struct rt_mutex *lock,
+static void __sched remove_waiter(struct rt_mutex_base *lock,
struct rt_mutex_waiter *waiter)
{
bool is_top_waiter = (waiter == rt_mutex_top_waiter(lock));
struct task_struct *owner = rt_mutex_owner(lock);
- struct rt_mutex *next_lock;
+ struct rt_mutex_base *next_lock;
lockdep_assert_held(&lock->wait_lock);
@@ -1115,7 +1115,8 @@ static void __sched remove_waiter(struct rt_mutex *lock,
*
* Must be called with lock->wait_lock held and interrupts disabled
*/
-static int __sched __rt_mutex_slowlock(struct rt_mutex *lock, unsigned int state,
+static int __sched __rt_mutex_slowlock(struct rt_mutex_base *lock,
+ unsigned int state,
struct hrtimer_sleeper *timeout,
struct rt_mutex_waiter *waiter)
{
@@ -1170,7 +1171,8 @@ static void __sched rt_mutex_handle_deadlock(int res, int detect_deadlock,
/*
* Slow path lock function:
*/
-static int __sched rt_mutex_slowlock(struct rt_mutex *lock, unsigned int state,
+static int __sched rt_mutex_slowlock(struct rt_mutex_base *lock,
+ unsigned int state,
struct hrtimer_sleeper *timeout,
enum rtmutex_chainwalk chwalk)
{
@@ -1231,7 +1233,7 @@ static int __sched rt_mutex_slowlock(struct rt_mutex *lock, unsigned int state,
return ret;
}
-static __always_inline int __rt_mutex_lock(struct rt_mutex *lock,
+static __always_inline int __rt_mutex_lock(struct rt_mutex_base *lock,
unsigned int state)
{
if (likely(rt_mutex_cmpxchg_acquire(lock, NULL, current)))
@@ -1240,7 +1242,7 @@ static __always_inline int __rt_mutex_lock(struct rt_mutex *lock,
return rt_mutex_slowlock(lock, state, NULL, RT_MUTEX_MIN_CHAINWALK);
}
-static int __sched __rt_mutex_slowtrylock(struct rt_mutex *lock)
+static int __sched __rt_mutex_slowtrylock(struct rt_mutex_base *lock)
{
int ret = try_to_take_rt_mutex(lock, current, NULL);
@@ -1256,7 +1258,7 @@ static int __sched __rt_mutex_slowtrylock(struct rt_mutex *lock)
/*
* Slow path try-lock function:
*/
-static int __sched rt_mutex_slowtrylock(struct rt_mutex *lock)
+static int __sched rt_mutex_slowtrylock(struct rt_mutex_base *lock)
{
unsigned long flags;
int ret;
@@ -1282,7 +1284,7 @@ static int __sched rt_mutex_slowtrylock(struct rt_mutex *lock)
return ret;
}
-static __always_inline int __rt_mutex_trylock(struct rt_mutex *lock)
+static __always_inline int __rt_mutex_trylock(struct rt_mutex_base *lock)
{
if (likely(rt_mutex_cmpxchg_acquire(lock, NULL, current)))
return 1;
@@ -1293,7 +1295,7 @@ static __always_inline int __rt_mutex_trylock(struct rt_mutex *lock)
/*
* Slow path to release a rt-mutex.
*/
-static void __sched rt_mutex_slowunlock(struct rt_mutex *lock)
+static void __sched rt_mutex_slowunlock(struct rt_mutex_base *lock)
{
DEFINE_WAKE_Q(wake_q);
unsigned long flags;
@@ -1354,7 +1356,7 @@ static void __sched rt_mutex_slowunlock(struct rt_mutex *lock)
rt_mutex_postunlock(&wake_q);
}
-static __always_inline void __rt_mutex_unlock(struct rt_mutex *lock)
+static __always_inline void __rt_mutex_unlock(struct rt_mutex_base *lock)
{
if (likely(rt_mutex_cmpxchg_release(lock, current, NULL)))
return;