diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2011-06-15 11:02:21 +0200 |
|---|---|---|
| committer | Clark Williams <williams@redhat.com> | 2012-04-10 16:40:53 -0500 |
| commit | 2041bb7dd7f3356e7dd410b9852637ec165dd79a (patch) | |
| tree | 23c7445f18e32f6abfa24e999043f01407b90a75 | |
| parent | 954e9037287fb8d17a3cee0b71dd27cd4f1ec0e2 (diff) | |
lglocks-rt.patch
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | include/linux/lglock.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/include/linux/lglock.h b/include/linux/lglock.h index 87f402ccec55..52b289f02feb 100644 --- a/include/linux/lglock.h +++ b/include/linux/lglock.h @@ -71,6 +71,8 @@ extern void name##_global_lock_online(void); \ extern void name##_global_unlock_online(void); \ +#ifndef CONFIG_PREEMPT_RT_FULL + #define DEFINE_LGLOCK(name) \ \ DEFINE_SPINLOCK(name##_cpu_lock); \ @@ -197,4 +199,101 @@ preempt_enable(); \ } \ EXPORT_SYMBOL(name##_global_unlock); + +#else /* !PREEMPT_RT_FULL */ +#define DEFINE_LGLOCK(name) \ + \ + DEFINE_PER_CPU(struct rt_mutex, name##_lock); \ + DEFINE_LGLOCK_LOCKDEP(name); \ + \ + void name##_lock_init(void) { \ + int i; \ + LOCKDEP_INIT_MAP(&name##_lock_dep_map, #name, &name##_lock_key, 0); \ + for_each_possible_cpu(i) { \ + struct rt_mutex *lock; \ + lock = &per_cpu(name##_lock, i); \ + rt_mutex_init(lock); \ + } \ + } \ + EXPORT_SYMBOL(name##_lock_init); \ + \ + void name##_local_lock(void) { \ + struct rt_mutex *lock; \ + migrate_disable(); \ + rwlock_acquire_read(&name##_lock_dep_map, 0, 0, _THIS_IP_); \ + lock = &__get_cpu_var(name##_lock); \ + __rt_spin_lock(lock); \ + } \ + EXPORT_SYMBOL(name##_local_lock); \ + \ + void name##_local_unlock(void) { \ + struct rt_mutex *lock; \ + rwlock_release(&name##_lock_dep_map, 1, _THIS_IP_); \ + lock = &__get_cpu_var(name##_lock); \ + __rt_spin_unlock(lock); \ + migrate_enable(); \ + } \ + EXPORT_SYMBOL(name##_local_unlock); \ + \ + void name##_local_lock_cpu(int cpu) { \ + struct rt_mutex *lock; \ + rwlock_acquire_read(&name##_lock_dep_map, 0, 0, _THIS_IP_); \ + lock = &per_cpu(name##_lock, cpu); \ + __rt_spin_lock(lock); \ + } \ + EXPORT_SYMBOL(name##_local_lock_cpu); \ + \ + void name##_local_unlock_cpu(int cpu) { \ + struct rt_mutex *lock; \ + rwlock_release(&name##_lock_dep_map, 1, _THIS_IP_); \ + lock = &per_cpu(name##_lock, cpu); \ + __rt_spin_unlock(lock); \ + } \ + EXPORT_SYMBOL(name##_local_unlock_cpu); \ + \ + void name##_global_lock_online(void) { \ + int i; \ + rwlock_acquire(&name##_lock_dep_map, 0, 0, _RET_IP_); \ + for_each_online_cpu(i) { \ + struct rt_mutex *lock; \ + lock = &per_cpu(name##_lock, i); \ + __rt_spin_lock(lock); \ + } \ + } \ + EXPORT_SYMBOL(name##_global_lock_online); \ + \ + void name##_global_unlock_online(void) { \ + int i; \ + rwlock_release(&name##_lock_dep_map, 1, _RET_IP_); \ + for_each_online_cpu(i) { \ + struct rt_mutex *lock; \ + lock = &per_cpu(name##_lock, i); \ + __rt_spin_unlock(lock); \ + } \ + } \ + EXPORT_SYMBOL(name##_global_unlock_online); \ + \ + void name##_global_lock(void) { \ + int i; \ + rwlock_acquire(&name##_lock_dep_map, 0, 0, _RET_IP_); \ + for_each_possible_cpu(i) { \ + struct rt_mutex *lock; \ + lock = &per_cpu(name##_lock, i); \ + __rt_spin_lock(lock); \ + } \ + } \ + EXPORT_SYMBOL(name##_global_lock); \ + \ + void name##_global_unlock(void) { \ + int i; \ + rwlock_release(&name##_lock_dep_map, 1, _RET_IP_); \ + for_each_possible_cpu(i) { \ + struct rt_mutex *lock; \ + lock = &per_cpu(name##_lock, i); \ + __rt_spin_unlock(lock); \ + } \ + } \ + EXPORT_SYMBOL(name##_global_unlock); +#endif /* PRREMPT_RT_FULL */ + #endif |