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| author | Rob Clark <robin.clark@oss.qualcomm.com> | 2025-11-01 05:47:30 -0700 |
|---|---|---|
| committer | Rob Clark <robin.clark@oss.qualcomm.com> | 2025-11-01 05:47:30 -0700 |
| commit | cb9f145f638d7afa633632a9290d6ad06caeb8ee (patch) | |
| tree | 1a4dec3bedfb02c62a08a5ebe95717f53e6ded20 /include/linux/rtmutex.h | |
| parent | f5d079564c44baaeedf5e25f4b943aa042ea0eb1 (diff) | |
| parent | f67d54e96bc9e4e20a927868f02c2e9d1aa09751 (diff) | |
Merge remote-tracking branch 'drm/drm-next' into msm-next-robclark
Back-merge drm-next to get caught up.
Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>
Diffstat (limited to 'include/linux/rtmutex.h')
| -rw-r--r-- | include/linux/rtmutex.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/include/linux/rtmutex.h b/include/linux/rtmutex.h index 7d049883a08a..ede4c6bf6f22 100644 --- a/include/linux/rtmutex.h +++ b/include/linux/rtmutex.h @@ -18,7 +18,7 @@ #include <linux/rbtree_types.h> #include <linux/spinlock_types_raw.h> -extern int max_lock_depth; /* for sysctl */ +extern int max_lock_depth; struct rt_mutex_base { raw_spinlock_t wait_lock; @@ -44,6 +44,16 @@ static inline bool rt_mutex_base_is_locked(struct rt_mutex_base *lock) return READ_ONCE(lock->owner) != NULL; } +#ifdef CONFIG_RT_MUTEXES +#define RT_MUTEX_HAS_WAITERS 1UL + +static inline struct task_struct *rt_mutex_owner(struct rt_mutex_base *lock) +{ + unsigned long owner = (unsigned long) READ_ONCE(lock->owner); + + return (struct task_struct *) (owner & ~RT_MUTEX_HAS_WAITERS); +} +#endif extern void rt_mutex_base_init(struct rt_mutex_base *rtb); /** |