[patch V4 10/68] rtmutex: Convert macros to inlines

Thomas Gleixner
2021-08-11T12:23:59Z

From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

Inlines are typesafe...

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
kernel/locking/rtmutex.c | 31 +++++++++++++++++++++++++++----
1 file changed, 27 insertions(+), 4 deletions(-)
---
--- a/kernel/locking/rtmutex.c
+++ b/kernel/locking/rtmutex.c
@@ -141,8 +141,19 @@ static __always_inline void fixup_rt_mut
* set up.
*/
#ifndef CONFIG_DEBUG_RT_MUTEXES
-# define rt_mutex_cmpxchg_acquire(l,c,n) (cmpxchg_acquire(&l->owner, c, n) == c)
-# define rt_mutex_cmpxchg_release(l,c,n) (cmpxchg_release(&l->owner, c, n) == c)
+static __always_inline bool rt_mutex_cmpxchg_acquire(struct rt_mutex *lock,
+ struct task_struct *old,
+ struct task_struct *new)
+{
+ return cmpxchg_acquire(&lock->owner, old, new) == old;
+}
+
+static __always_inline bool rt_mutex_cmpxchg_release(struct rt_mutex *lock,
+ struct task_struct *old,
+ struct task_struct *new)
+{
+ return cmpxchg_release(&lock->owner, old, new) == old;
+}

/*
* Callers must hold the ->wait_lock -- which is the whole purpose as we force
@@ -201,8 +212,20 @@ static __always_inline bool unlock_rt_mu
}

#else
-# define rt_mutex_cmpxchg_acquire(l,c,n) (0)
-# define rt_mutex_cmpxchg_release(l,c,n) (0)
+static __always_inline bool rt_mutex_cmpxchg_acquire(struct rt_mutex *lock,
+ struct task_struct *old,
+ struct task_struct *new)
+{
+ return false;
+
+}
+
+static __always_inline bool rt_mutex_cmpxchg_release(struct rt_mutex *lock,
+ struct task_struct *old,
+ struct task_struct *new)
+{
+ return false;
+}

static __always_inline void mark_rt_mutex_waiters(struct rt_mutex *lock)
{