diff options
author | Kent Overstreet <kent.overstreet@linux.dev> | 2024-01-16 17:00:02 -0500 |
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committer | Kent Overstreet <kent.overstreet@linux.dev> | 2024-01-16 17:17:23 -0500 |
commit | b5fd066153c40a70a29caa1ea7987723ab687763 (patch) | |
tree | 6d43a8b0a90d549a54c65565ac96c92b3e84b594 /include/linux/percpu-rwsem.h | |
parent | 06ff8b55b70fda44d91b31b5511fafd1680a8934 (diff) |
Move c_src dirs back to toplevel
We just wanted c sourcefiles out of the top level, not c source
directories.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'include/linux/percpu-rwsem.h')
-rw-r--r-- | include/linux/percpu-rwsem.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/include/linux/percpu-rwsem.h b/include/linux/percpu-rwsem.h new file mode 100644 index 00000000..153251c0 --- /dev/null +++ b/include/linux/percpu-rwsem.h @@ -0,0 +1,58 @@ + +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _LINUX_PERCPU_RWSEM_H +#define _LINUX_PERCPU_RWSEM_H + +#include <pthread.h> +#include <linux/preempt.h> + +struct percpu_rw_semaphore { + pthread_mutex_t lock; +}; + +static inline void percpu_down_read_preempt_disable(struct percpu_rw_semaphore *sem) +{ + pthread_mutex_lock(&sem->lock); +} + +static inline void percpu_down_read(struct percpu_rw_semaphore *sem) +{ + pthread_mutex_lock(&sem->lock); +} + +static inline int percpu_down_read_trylock(struct percpu_rw_semaphore *sem) +{ + return !pthread_mutex_trylock(&sem->lock); +} + +static inline void percpu_up_read_preempt_enable(struct percpu_rw_semaphore *sem) +{ + pthread_mutex_unlock(&sem->lock); +} + +static inline void percpu_up_read(struct percpu_rw_semaphore *sem) +{ + pthread_mutex_unlock(&sem->lock); +} + +static inline void percpu_down_write(struct percpu_rw_semaphore *sem) +{ + pthread_mutex_lock(&sem->lock); +} + +static inline void percpu_up_write(struct percpu_rw_semaphore *sem) +{ + pthread_mutex_unlock(&sem->lock); +} + +static inline void percpu_free_rwsem(struct percpu_rw_semaphore *sem) {} + +static inline int percpu_init_rwsem(struct percpu_rw_semaphore *sem) +{ + pthread_mutex_init(&sem->lock, NULL); + return 0; +} + +#define percpu_rwsem_assert_held(sem) do {} while (0) + +#endif |