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locking/rt: Remove one __cond_lock() in RT's spin_trylock_irqsave()

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spin_trylock_irqsave() has a __cond_lock() wrapper which points to
__spin_trylock_irqsave(). The function then invokes spin_trylock() which
has another __cond_lock() finally pointing to rt_spin_trylock().

The compiler has no problem to parse this but sparse does not recognise
that users of spin_trylock_irqsave() acquire a conditional lock and
complains.

Remove one layer of __cond_lock() so that sparse recognises conditional
locking.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20240812104200.2239232-3-bigeasy@linutronix.de
This commit is contained in:
Sebastian Andrzej Siewior
2024-08-12 12:39:03 +02:00
committed by Thomas Gleixner
parent 52e0874fc1
commit b1f01f9e54
1 changed files with 1 additions and 4 deletions
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5
include/linux/spinlock_rt.h
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@@ -132,7 +132,7 @@ static __always_inline void spin_unlock_irqrestore(spinlock_t *lock,
#define spin_trylock_irq(lock) \
__cond_lock(lock, rt_spin_trylock(lock))
#define __spin_trylock_irqsave(lock, flags) \
#define spin_trylock_irqsave(lock, flags) \
({ \
int __locked; \
\
@@ -142,9 +142,6 @@ static __always_inline void spin_unlock_irqrestore(spinlock_t *lock,
__locked; \
})
#define spin_trylock_irqsave(lock, flags) \
__cond_lock(lock, __spin_trylock_irqsave(lock, flags))
#define spin_is_contended(lock) (((void)(lock), 0))
static inline int spin_is_locked(spinlock_t *lock)