Release 4.12 include/linux/eventfd.h
/*
* include/linux/eventfd.h
*
* Copyright (C) 2007 Davide Libenzi <davidel@xmailserver.org>
*
*/
#ifndef _LINUX_EVENTFD_H
#define _LINUX_EVENTFD_H
#include <linux/fcntl.h>
#include <linux/wait.h>
/*
* CAREFUL: Check include/uapi/asm-generic/fcntl.h when defining
* new flags, since they might collide with O_* ones. We want
* to re-use O_* flags that couldn't possibly have a meaning
* from eventfd, in order to leave a free define-space for
* shared O_* flags.
*/
#define EFD_SEMAPHORE (1 << 0)
#define EFD_CLOEXEC O_CLOEXEC
#define EFD_NONBLOCK O_NONBLOCK
#define EFD_SHARED_FCNTL_FLAGS (O_CLOEXEC | O_NONBLOCK)
#define EFD_FLAGS_SET (EFD_SHARED_FCNTL_FLAGS | EFD_SEMAPHORE)
struct file;
#ifdef CONFIG_EVENTFD
struct file *eventfd_file_create(unsigned int count, int flags);
struct eventfd_ctx *eventfd_ctx_get(struct eventfd_ctx *ctx);
void eventfd_ctx_put(struct eventfd_ctx *ctx);
struct file *eventfd_fget(int fd);
struct eventfd_ctx *eventfd_ctx_fdget(int fd);
struct eventfd_ctx *eventfd_ctx_fileget(struct file *file);
__u64 eventfd_signal(struct eventfd_ctx *ctx, __u64 n);
ssize_t eventfd_ctx_read(struct eventfd_ctx *ctx, int no_wait, __u64 *cnt);
int eventfd_ctx_remove_wait_queue(struct eventfd_ctx *ctx, wait_queue_t *wait,
__u64 *cnt);
#else /* CONFIG_EVENTFD */
/*
* Ugly ugly ugly error layer to support modules that uses eventfd but
* pretend to work in !CONFIG_EVENTFD configurations. Namely, AIO.
*/
static inline struct file *eventfd_file_create(unsigned int count, int flags)
{
return ERR_PTR(-ENOSYS);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Davide Libenzi | 23 | 100.00% | 1 | 100.00% |
| Total | 23 | 100.00% | 1 | 100.00% |
static inline struct eventfd_ctx *eventfd_ctx_fdget(int fd)
{
return ERR_PTR(-ENOSYS);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Davide Libenzi | 19 | 100.00% | 2 | 100.00% |
| Total | 19 | 100.00% | 2 | 100.00% |
static inline int eventfd_signal(struct eventfd_ctx *ctx, int n)
{
return -ENOSYS;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Randy Dunlap | 10 | 52.63% | 1 | 33.33% |
| Davide Libenzi | 9 | 47.37% | 2 | 66.67% |
| Total | 19 | 100.00% | 3 | 100.00% |
static inline void eventfd_ctx_put(struct eventfd_ctx *ctx)
{
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Davide Libenzi | 11 | 100.00% | 1 | 100.00% |
| Total | 11 | 100.00% | 1 | 100.00% |
static inline ssize_t eventfd_ctx_read(struct eventfd_ctx *ctx, int no_wait,
__u64 *cnt)
{
return -ENOSYS;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Davide Libenzi | 23 | 100.00% | 1 | 100.00% |
| Total | 23 | 100.00% | 1 | 100.00% |
static inline int eventfd_ctx_remove_wait_queue(struct eventfd_ctx *ctx,
wait_queue_t *wait, __u64 *cnt)
{
return -ENOSYS;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Davide Libenzi | 24 | 100.00% | 1 | 100.00% |
| Total | 24 | 100.00% | 1 | 100.00% |
#endif
#endif /* _LINUX_EVENTFD_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Davide Libenzi | 248 | 90.18% | 5 | 45.45% |
| Ulrich Drepper | 11 | 4.00% | 2 | 18.18% |
| Randy Dunlap | 10 | 3.64% | 1 | 9.09% |
| Al Viro | 3 | 1.09% | 1 | 9.09% |
| Sha Zhengju | 2 | 0.73% | 1 | 9.09% |
| Martin Sustrik | 1 | 0.36% | 1 | 9.09% |
| Total | 275 | 100.00% | 11 | 100.00% |
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