| Date | Fri, 30 Jul 2021 15:50:21 +0200 | From | Thomas Gleixner <> | Subject | [patch 14/63] rtmutex: Provide rt_mutex_base_is_locked() |
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Provide rt_mutex_base_is_locked() which will be used for various wrapped locking primitives for RT.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- include/linux/rtmutex.h | 11 +++++++++++ 1 file changed, 11 insertions(+)
--- a/include/linux/rtmutex.h +++ b/include/linux/rtmutex.h @@ -32,6 +32,17 @@ struct rt_mutex_base { .owner = NULL \ } +/** + * rt_mutex_base_is_locked - is the rtmutex locked + * @lock: the mutex to be queried + * + * Returns true if the mutex is locked, false if unlocked. + */ +static inline bool rt_mutex_base_is_locked(struct rt_mutex_base *lock) +{ + return lock->owner != NULL; +} + extern void rt_mutex_base_init(struct rt_mutex_base *rtb); /**
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