[PATCH] fio: better check_str() setup

[disktools.git] / arch.h

#ifndef ARCH_H
#define ARCH_H

enum {
	arch_x86_64,
	arch_i386,
	arch_ppc,
	arch_ia64,
	arch_s390,
	arch_alpha,
};

static inline unsigned long generic_ffz(unsigned long word)
{
	unsigned int i;

	for (i = 0; i < sizeof(word) * 8; i++)
		if ((word & (1UL << i)) == 0)
			return i;

	return -1;
}

#if defined(__i386__)
#include "arch-x86.h"
#elif defined(__x86_64__)
#include "arch-x86_64.h"
#elif defined(__powerpc__) || defined(__powerpc64__)
#include "arch-ppc.h"
#elif defined(__ia64__)
#include "arch-ia64.h"
#elif defined(__alpha__)
#include "arch-alpha.h"
#elif defined(__s390x__) || defined(__s390__)
#include "arch-s390.h"
#else
#error "Unsupported arch"
#endif

#define BITS_PER_LONG	(__WORDSIZE)

#ifndef BLKGETSIZE64
#define BLKGETSIZE64	_IOR(0x12,114,size_t)
#endif

static inline int ioprio_set(int which, int who, int ioprio)
{
	return syscall(__NR_ioprio_set, which, who, ioprio);
}

/*
 * we want fadvise64 really, but it's so tangled... later
 */
static inline int fadvise(int fd, loff_t offset, size_t len, int advice)
{
#if 0
	return syscall(__NR_fadvise64, fd, offset, offset >> 32, len, advice);
#else
	return posix_fadvise(fd, (off_t) offset, len, advice);
#endif
}

enum {
	IOPRIO_WHO_PROCESS = 1,
	IOPRIO_WHO_PGRP,
	IOPRIO_WHO_USER,
};

#define IOPRIO_CLASS_SHIFT	13

#endif