diff options
Diffstat (limited to 'kernel/include/linux/lglock.h')
| -rw-r--r-- | kernel/include/linux/lglock.h | 34 |
1 files changed, 20 insertions, 14 deletions
diff --git a/kernel/include/linux/lglock.h b/kernel/include/linux/lglock.h index 9603a1500..6f035f635 100644 --- a/kernel/include/linux/lglock.h +++ b/kernel/include/linux/lglock.h @@ -34,10 +34,10 @@ #endif struct lglock { -#ifndef CONFIG_PREEMPT_RT_FULL - arch_spinlock_t __percpu *lock; -#else +#ifdef CONFIG_PREEMPT_RT_FULL struct rt_mutex __percpu *lock; +#else + arch_spinlock_t __percpu *lock; #endif #ifdef CONFIG_DEBUG_LOCK_ALLOC struct lock_class_key lock_key; @@ -45,34 +45,40 @@ struct lglock { #endif }; -#ifndef CONFIG_PREEMPT_RT_FULL +#ifdef CONFIG_PREEMPT_RT_FULL # define DEFINE_LGLOCK(name) \ - static DEFINE_PER_CPU(arch_spinlock_t, name ## _lock) \ - = __ARCH_SPIN_LOCK_UNLOCKED; \ + static DEFINE_PER_CPU(struct rt_mutex, name ## _lock) \ + = __RT_MUTEX_INITIALIZER( name ## _lock); \ struct lglock name = { .lock = &name ## _lock } # define DEFINE_STATIC_LGLOCK(name) \ - static DEFINE_PER_CPU(arch_spinlock_t, name ## _lock) \ - = __ARCH_SPIN_LOCK_UNLOCKED; \ + static DEFINE_PER_CPU(struct rt_mutex, name ## _lock) \ + = __RT_MUTEX_INITIALIZER( name ## _lock); \ static struct lglock name = { .lock = &name ## _lock } + #else -# define DEFINE_LGLOCK(name) \ - static DEFINE_PER_CPU(struct rt_mutex, name ## _lock) \ - = __RT_MUTEX_INITIALIZER( name ## _lock); \ +#define DEFINE_LGLOCK(name) \ + static DEFINE_PER_CPU(arch_spinlock_t, name ## _lock) \ + = __ARCH_SPIN_LOCK_UNLOCKED; \ struct lglock name = { .lock = &name ## _lock } -# define DEFINE_STATIC_LGLOCK(name) \ - static DEFINE_PER_CPU(struct rt_mutex, name ## _lock) \ - = __RT_MUTEX_INITIALIZER( name ## _lock); \ +#define DEFINE_STATIC_LGLOCK(name) \ + static DEFINE_PER_CPU(arch_spinlock_t, name ## _lock) \ + = __ARCH_SPIN_LOCK_UNLOCKED; \ static struct lglock name = { .lock = &name ## _lock } #endif void lg_lock_init(struct lglock *lg, char *name); + void lg_local_lock(struct lglock *lg); void lg_local_unlock(struct lglock *lg); void lg_local_lock_cpu(struct lglock *lg, int cpu); void lg_local_unlock_cpu(struct lglock *lg, int cpu); + +void lg_double_lock(struct lglock *lg, int cpu1, int cpu2); +void lg_double_unlock(struct lglock *lg, int cpu1, int cpu2); + void lg_global_lock(struct lglock *lg); void lg_global_unlock(struct lglock *lg); |