1 /**************************************************************************** 2 **************************************************************************** 3 *** 4 *** This header was automatically generated from a Linux kernel header 5 *** of the same name, to make information necessary for userspace to 6 *** call into the kernel available to libc. It contains only constants, 7 *** structures, and macros generated from the original header, and thus, 8 *** contains no copyrightable information. 9 *** 10 **************************************************************************** 11 ****************************************************************************/ 12 #ifndef __ASM_ARM_SEMAPHORE_H 13 #define __ASM_ARM_SEMAPHORE_H 14 15 #include <linux/linkage.h> 16 #include <linux/spinlock.h> 17 #include <linux/wait.h> 18 #include <linux/rwsem.h> 19 20 #include <asm/atomic.h> 21 #include <asm/locks.h> 22 23 struct semaphore { 24 atomic_t count; 25 int sleepers; 26 wait_queue_head_t wait; 27 }; 28 29 #define __SEMAPHORE_INIT(name, cnt) { .count = ATOMIC_INIT(cnt), .wait = __WAIT_QUEUE_HEAD_INITIALIZER((name).wait), } 30 31 #define __DECLARE_SEMAPHORE_GENERIC(name,count) struct semaphore name = __SEMAPHORE_INIT(name,count) 32 33 #define DECLARE_MUTEX(name) __DECLARE_SEMAPHORE_GENERIC(name,1) 34 #define DECLARE_MUTEX_LOCKED(name) __DECLARE_SEMAPHORE_GENERIC(name,0) 35 36 #endif 37
