rust/helpers/spinlock.c

   1 // SPDX-License-Identifier: GPL-2.0
   2
   3 #include <linux/spinlock.h>
   4
   5 void rust_helper___spin_lock_init(spinlock_t *lock, const char *name,
   6                                   struct lock_class_key *key)
   7 {
   8 #ifdef CONFIG_DEBUG_SPINLOCK
   9 # if defined(CONFIG_PREEMPT_RT)
  10         __spin_lock_init(lock, name, key, false);
  11 # else /*!CONFIG_PREEMPT_RT */
  12         __raw_spin_lock_init(spinlock_check(lock), name, key, LD_WAIT_CONFIG);
  13 # endif /* CONFIG_PREEMPT_RT */
  14 #else /* !CONFIG_DEBUG_SPINLOCK */
  15         spin_lock_init(lock);
  16 #endif /* CONFIG_DEBUG_SPINLOCK */
  17 }
  18
  19 void rust_helper_spin_lock(spinlock_t *lock)
  20 {
  21         spin_lock(lock);
  22 }
  23
  24 void rust_helper_spin_unlock(spinlock_t *lock)
  25 {
  26         spin_unlock(lock);
  27 }
  28
  29 int rust_helper_spin_trylock(spinlock_t *lock)
  30 {
  31         return spin_trylock(lock);
  32 }
  33
  34 void rust_helper_spin_assert_is_held(spinlock_t *lock)
  35 {
  36         lockdep_assert_held(lock);
  37 }