diff --git a/include/linux/sem.h b/include/linux/sem.h
index 10d6b22..53d4265 100644
--- a/include/linux/sem.h
+++ b/include/linux/sem.h
@@ -1,85 +1,10 @@
 #ifndef _LINUX_SEM_H
 #define _LINUX_SEM_H
 
-#include <linux/ipc.h>
-
-/* semop flags */
-#define SEM_UNDO        0x1000  /* undo the operation on exit */
-
-/* semctl Command Definitions. */
-#define GETPID  11       /* get sempid */
-#define GETVAL  12       /* get semval */
-#define GETALL  13       /* get all semval's */
-#define GETNCNT 14       /* get semncnt */
-#define GETZCNT 15       /* get semzcnt */
-#define SETVAL  16       /* set semval */
-#define SETALL  17       /* set all semval's */
-
-/* ipcs ctl cmds */
-#define SEM_STAT 18
-#define SEM_INFO 19
-
-/* Obsolete, used only for backwards compatibility and libc5 compiles */
-struct semid_ds {
-	struct ipc_perm	sem_perm;		/* permissions .. see ipc.h */
-	__kernel_time_t	sem_otime;		/* last semop time */
-	__kernel_time_t	sem_ctime;		/* last change time */
-	struct sem	*sem_base;		/* ptr to first semaphore in array */
-	struct sem_queue *sem_pending;		/* pending operations to be processed */
-	struct sem_queue **sem_pending_last;	/* last pending operation */
-	struct sem_undo	*undo;			/* undo requests on this array */
-	unsigned short	sem_nsems;		/* no. of semaphores in array */
-};
-
-/* Include the definition of semid64_ds */
-#include <asm/sembuf.h>
-
-/* semop system calls takes an array of these. */
-struct sembuf {
-	unsigned short  sem_num;	/* semaphore index in array */
-	short		sem_op;		/* semaphore operation */
-	short		sem_flg;	/* operation flags */
-};
-
-/* arg for semctl system calls. */
-union semun {
-	int val;			/* value for SETVAL */
-	struct semid_ds __user *buf;	/* buffer for IPC_STAT & IPC_SET */
-	unsigned short __user *array;	/* array for GETALL & SETALL */
-	struct seminfo __user *__buf;	/* buffer for IPC_INFO */
-	void __user *__pad;
-};
-
-struct  seminfo {
-	int semmap;
-	int semmni;
-	int semmns;
-	int semmnu;
-	int semmsl;
-	int semopm;
-	int semume;
-	int semusz;
-	int semvmx;
-	int semaem;
-};
-
-#define SEMMNI  128             /* <= IPCMNI  max # of semaphore identifiers */
-#define SEMMSL  250             /* <= 8 000 max num of semaphores per id */
-#define SEMMNS  (SEMMNI*SEMMSL) /* <= INT_MAX max # of semaphores in system */
-#define SEMOPM  32	        /* <= 1 000 max num of ops per semop call */
-#define SEMVMX  32767           /* <= 32767 semaphore maximum value */
-#define SEMAEM  SEMVMX          /* adjust on exit max value */
-
-/* unused */
-#define SEMUME  SEMOPM          /* max num of undo entries per process */
-#define SEMMNU  SEMMNS          /* num of undo structures system wide */
-#define SEMMAP  SEMMNS          /* # of entries in semaphore map */
-#define SEMUSZ  20		/* sizeof struct sem_undo */
-
-#ifdef __KERNEL__
 #include <linux/atomic.h>
 #include <linux/rcupdate.h>
 #include <linux/cache.h>
+#include <uapi/linux/sem.h>
 
 struct task_struct;
 
@@ -122,6 +47,4 @@
 }
 #endif
 
-#endif /* __KERNEL__ */
-
 #endif /* _LINUX_SEM_H */