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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2022-02-18 13:30:38 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2022-02-18 13:30:38 -0800 |
| commit | 986c6f7c3fc855032f3457a5a1b7fbcc09c375bb (patch) | |
| tree | cf5b08b5ae405ae04e0c1c728531972934d3eed0 /kernel/locking/spinlock_rt.c | |
| parent | e511fc58071ab9b72d25667e5957cf895eb53cdf (diff) | |
| parent | 754e0b0e35608ed5206d6a67a791563c631cec07 (diff) | |
Merge tag 'v5.17-rc4' into next
Sync up with mainline to get the latest changes in HID subsystem.
Diffstat (limited to 'kernel/locking/spinlock_rt.c')
| -rw-r--r-- | kernel/locking/spinlock_rt.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/kernel/locking/spinlock_rt.c b/kernel/locking/spinlock_rt.c index b2e553f9255b..48a19ed8486d 100644 --- a/kernel/locking/spinlock_rt.c +++ b/kernel/locking/spinlock_rt.c @@ -239,6 +239,18 @@ void __sched rt_write_lock(rwlock_t *rwlock) } EXPORT_SYMBOL(rt_write_lock); +#ifdef CONFIG_DEBUG_LOCK_ALLOC +void __sched rt_write_lock_nested(rwlock_t *rwlock, int subclass) +{ + rtlock_might_resched(); + rwlock_acquire(&rwlock->dep_map, subclass, 0, _RET_IP_); + rwbase_write_lock(&rwlock->rwbase, TASK_RTLOCK_WAIT); + rcu_read_lock(); + migrate_disable(); +} +EXPORT_SYMBOL(rt_write_lock_nested); +#endif + void __sched rt_read_unlock(rwlock_t *rwlock) { rwlock_release(&rwlock->dep_map, _RET_IP_); @@ -257,12 +269,6 @@ void __sched rt_write_unlock(rwlock_t *rwlock) } EXPORT_SYMBOL(rt_write_unlock); -int __sched rt_rwlock_is_contended(rwlock_t *rwlock) -{ - return rw_base_is_contended(&rwlock->rwbase); -} -EXPORT_SYMBOL(rt_rwlock_is_contended); - #ifdef CONFIG_DEBUG_LOCK_ALLOC void __rt_rwlock_init(rwlock_t *rwlock, const char *name, struct lock_class_key *key) |