Contributors: 9
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Matthew Wilcox |
64 |
37.43% |
6 |
30.00% |
| Chris Zankel |
41 |
23.98% |
2 |
10.00% |
| Linus Torvalds (pre-git) |
27 |
15.79% |
3 |
15.00% |
| David Howells |
19 |
11.11% |
2 |
10.00% |
| Thomas Gleixner |
7 |
4.09% |
3 |
15.00% |
| Andi Kleen |
5 |
2.92% |
1 |
5.00% |
| David S. Miller |
4 |
2.34% |
1 |
5.00% |
| Alan Cox |
3 |
1.75% |
1 |
5.00% |
| Adrian Bunk |
1 |
0.58% |
1 |
5.00% |
| Total |
171 |
|
20 |
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2008 Intel Corporation
* Author: Matthew Wilcox <willy@linux.intel.com>
*
* Please see kernel/locking/semaphore.c for documentation of these functions
*/
#ifndef __LINUX_SEMAPHORE_H
#define __LINUX_SEMAPHORE_H
#include <linux/list.h>
#include <linux/spinlock.h>
/* Please don't access any members of this structure directly */
struct semaphore {
raw_spinlock_t lock;
unsigned int count;
struct list_head wait_list;
};
#define __SEMAPHORE_INITIALIZER(name, n) \
{ \
.lock = __RAW_SPIN_LOCK_UNLOCKED((name).lock), \
.count = n, \
.wait_list = LIST_HEAD_INIT((name).wait_list), \
}
#define DEFINE_SEMAPHORE(name) \
struct semaphore name = __SEMAPHORE_INITIALIZER(name, 1)
static inline void sema_init(struct semaphore *sem, int val)
{
static struct lock_class_key __key;
*sem = (struct semaphore) __SEMAPHORE_INITIALIZER(*sem, val);
lockdep_init_map(&sem->lock.dep_map, "semaphore->lock", &__key, 0);
}
extern void down(struct semaphore *sem);
extern int __must_check down_interruptible(struct semaphore *sem);
extern int __must_check down_killable(struct semaphore *sem);
extern int __must_check down_trylock(struct semaphore *sem);
extern int __must_check down_timeout(struct semaphore *sem, long jiffies);
extern void up(struct semaphore *sem);
#endif /* __LINUX_SEMAPHORE_H */