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// SPDX-License-Identifier: GPL-2.0-or-later
/*
*
* Copyright (c) International Business Machines Corp., 2001
*/
/*
* hugetlb.h - common definitions for the hugepage tests
*/
#ifndef __HUGETLB_H
#define __HUGETLB_H
#include <stdlib.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <errno.h>
#include <sys/wait.h>
#include "tst_test.h"
#include "old_tmpdir.h"
#include "mem.h"
#define PALIGN(p, a) ((void *)LTP_ALIGN((unsigned long)(p), (a)))
#define SHM_RD 0400
#define SHM_WR 0200
#define SHM_RW (SHM_RD|SHM_WR)
#ifndef SHM_HUGETLB
#define SHM_HUGETLB 04000 /* segment is mapped via hugetlb */
#endif
#ifndef barrier
# ifdef mb
/* Redefining the mb() */
# define barrier() mb()
# else
# define barrier() __asm__ __volatile__ ("" : : : "memory")
# endif
#endif
/* Check if hugetlb page is gigantic */
static inline int is_hugetlb_gigantic(unsigned long hpage_size)
{
return (hpage_size / getpagesize()) >> 11;
}
/*
* to get the lower nine permission bits
* from shmid_ds.ipc_perm.mode
*/
#define MODE_MASK 0x01FF
extern key_t shmkey; /* an IPC key generated by ftok() */
int getipckey(void);
int getuserid(char *user);
void rm_shm(int shm_id);
int do_readback(void *p, size_t size, char *desc);
#endif /* hugetlb.h */
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