[fio.git] / os / os-linux.h

#ifndef FIO_OS_LINUX_H
#define FIO_OS_LINUX_H

#define	FIO_OS	os_linux

#include <sys/ioctl.h>
#include <sys/uio.h>
#include <sys/syscall.h>
#include <sys/sysmacros.h>
#include <sys/vfs.h>
#include <sys/mman.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sched.h>
#include <linux/unistd.h>
#include <linux/raw.h>
#include <linux/major.h>
#include <linux/fs.h>
#include <scsi/sg.h>

#ifdef ARCH_HAVE_CRC_CRYPTO
#include <sys/auxv.h>
#ifndef HWCAP_CRC32
#define HWCAP_CRC32             (1 << 7)
#endif /* HWCAP_CRC32 */
#endif /* ARCH_HAVE_CRC_CRYPTO */

#include "./os-linux-syscall.h"
#include "../file.h"

#ifndef __has_builtin         // Optional of course.
  #define __has_builtin(x) 0  // Compatibility with non-clang compilers.
#endif

#define FIO_HAVE_CPU_AFFINITY
#define FIO_HAVE_DISK_UTIL
#define FIO_HAVE_SGIO
#define FIO_HAVE_IOPRIO
#define FIO_HAVE_IOPRIO_CLASS
#define FIO_HAVE_IOSCHED_SWITCH
#define FIO_HAVE_ODIRECT
#define FIO_HAVE_HUGETLB
#define FIO_HAVE_RAWBIND
#define FIO_HAVE_BLKTRACE
#define FIO_HAVE_CL_SIZE
#define FIO_HAVE_CGROUPS
#define FIO_HAVE_FS_STAT
#define FIO_HAVE_TRIM
#define FIO_HAVE_GETTID
#define FIO_USE_GENERIC_INIT_RANDOM_STATE
#define FIO_HAVE_PWRITEV2
#define FIO_HAVE_SHM_ATTACH_REMOVED

#ifdef MAP_HUGETLB
#define FIO_HAVE_MMAP_HUGE
#endif

#define OS_MAP_ANON		MAP_ANONYMOUS

#define FIO_EXT_ENG_DIR	"/usr/local/lib/fio"

typedef cpu_set_t os_cpu_mask_t;

#ifdef CONFIG_3ARG_AFFINITY
#define fio_setaffinity(pid, cpumask)		\
	sched_setaffinity((pid), sizeof(cpumask), &(cpumask))
#define fio_getaffinity(pid, ptr)	\
	sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
#elif defined(CONFIG_2ARG_AFFINITY)
#define fio_setaffinity(pid, cpumask)	\
	sched_setaffinity((pid), &(cpumask))
#define fio_getaffinity(pid, ptr)	\
	sched_getaffinity((pid), (ptr))
#endif

#define fio_get_thread_affinity(mask)	\
	pthread_getaffinity_np(pthread_self(), sizeof(mask), &(mask))

#define fio_cpu_clear(mask, cpu)	(void) CPU_CLR((cpu), (mask))
#define fio_cpu_set(mask, cpu)		(void) CPU_SET((cpu), (mask))
#define fio_cpu_isset(mask, cpu)	(CPU_ISSET((cpu), (mask)) != 0)
#define fio_cpu_count(mask)		CPU_COUNT((mask))

static inline int fio_cpuset_init(os_cpu_mask_t *mask)
{
	CPU_ZERO(mask);
	return 0;
}

static inline int fio_cpuset_exit(os_cpu_mask_t *mask)
{
	return 0;
}

#define FIO_MAX_CPUS			CPU_SETSIZE

enum {
	IOPRIO_CLASS_NONE,
	IOPRIO_CLASS_RT,
	IOPRIO_CLASS_BE,
	IOPRIO_CLASS_IDLE,
};

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

#define IOPRIO_BITS		16
#define IOPRIO_CLASS_SHIFT	13

#define IOPRIO_MIN_PRIO		0	/* highest priority */
#define IOPRIO_MAX_PRIO		7	/* lowest priority */

#define IOPRIO_MIN_PRIO_CLASS	0
#define IOPRIO_MAX_PRIO_CLASS	3

static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
{
	/*
	 * If no class is set, assume BE
	 */
	if (!ioprio_class)
		ioprio_class = IOPRIO_CLASS_BE;

	ioprio |= ioprio_class << IOPRIO_CLASS_SHIFT;
	return syscall(__NR_ioprio_set, which, who, ioprio);
}

#ifndef CONFIG_HAVE_GETTID
static inline int gettid(void)
{
	return syscall(__NR_gettid);
}
#endif

#define SPLICE_DEF_SIZE	(64*1024)

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

#ifndef BLKFLSBUF
#define BLKFLSBUF	_IO(0x12,97)
#endif

#ifndef BLKDISCARD
#define BLKDISCARD	_IO(0x12,119)
#endif

static inline int blockdev_invalidate_cache(struct fio_file *f)
{
	return ioctl(f->fd, BLKFLSBUF);
}

static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
{
	if (!ioctl(f->fd, BLKGETSIZE64, bytes))
		return 0;

	return errno;
}

static inline unsigned long long os_phys_mem(void)
{
	long pagesize, pages;

	pagesize = sysconf(_SC_PAGESIZE);
	pages = sysconf(_SC_PHYS_PAGES);
	if (pages == -1 || pagesize == -1)
		return 0;

	return (unsigned long long) pages * (unsigned long long) pagesize;
}

static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
{
	struct raw_config_request rq;
	int fd;

	if (major(dev) != RAW_MAJOR)
		return 1;

	/*
	 * we should be able to find /dev/rawctl or /dev/raw/rawctl
	 */
	fd = open("/dev/rawctl", O_RDONLY);
	if (fd < 0) {
		fd = open("/dev/raw/rawctl", O_RDONLY);
		if (fd < 0)
			return 1;
	}

	rq.raw_minor = minor(dev);
	if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
		close(fd);
		return 1;
	}

	close(fd);
	*majdev = rq.block_major;
	*mindev = rq.block_minor;
	return 0;
}

#ifdef O_NOATIME
#define FIO_O_NOATIME	O_NOATIME
#else
#define FIO_O_NOATIME	0
#endif

#ifdef O_ATOMIC
#define OS_O_ATOMIC	O_ATOMIC
#else
#define OS_O_ATOMIC	040000000
#endif

#ifdef MADV_REMOVE
#define FIO_MADV_FREE	MADV_REMOVE
#endif

/* Check for GCC or Clang byte swap intrinsics */
#if (__has_builtin(__builtin_bswap16) && __has_builtin(__builtin_bswap32) \
     && __has_builtin(__builtin_bswap64)) || (__GNUC__ > 4 \
     || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)) /* fio_swapN */
#define fio_swap16(x)	__builtin_bswap16(x)
#define fio_swap32(x)	__builtin_bswap32(x)
#define fio_swap64(x)	__builtin_bswap64(x)
#else
#include <byteswap.h>
#define fio_swap16(x)	bswap_16(x)
#define fio_swap32(x)	bswap_32(x)
#define fio_swap64(x)	bswap_64(x)
#endif /* fio_swapN */

#define CACHE_LINE_FILE	\
	"/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"

static inline int arch_cache_line_size(void)
{
	char size[32];
	int fd, ret;

	fd = open(CACHE_LINE_FILE, O_RDONLY);
	if (fd < 0)
		return -1;

	ret = read(fd, size, sizeof(size));

	close(fd);

	if (ret <= 0)
		return -1;
	else
		return atoi(size);
}

#ifdef __powerpc64__
#define FIO_HAVE_CPU_ONLINE_SYSCONF
static inline unsigned int cpus_online(void)
{
        return sysconf(_SC_NPROCESSORS_CONF);
}
#endif

static inline unsigned long long get_fs_free_size(const char *path)
{
	unsigned long long ret;
	struct statfs s;

	if (statfs(path, &s) < 0)
		return -1ULL;

	ret = s.f_bsize;
	ret *= (unsigned long long) s.f_bfree;
	return ret;
}

static inline int os_trim(struct fio_file *f, unsigned long long start,
			  unsigned long long len)
{
	uint64_t range[2];

	range[0] = start;
	range[1] = len;

	if (!ioctl(f->fd, BLKDISCARD, range))
		return 0;

	return errno;
}

#ifdef CONFIG_SCHED_IDLE
static inline int fio_set_sched_idle(void)
{
	struct sched_param p = { .sched_priority = 0, };
	return sched_setscheduler(gettid(), SCHED_IDLE, &p);
}
#endif

#ifndef F_GET_RW_HINT
#ifndef F_LINUX_SPECIFIC_BASE
#define F_LINUX_SPECIFIC_BASE	1024
#endif
#define F_GET_RW_HINT		(F_LINUX_SPECIFIC_BASE + 11)
#define F_SET_RW_HINT		(F_LINUX_SPECIFIC_BASE + 12)
#define F_GET_FILE_RW_HINT	(F_LINUX_SPECIFIC_BASE + 13)
#define F_SET_FILE_RW_HINT	(F_LINUX_SPECIFIC_BASE + 14)
#endif

#ifndef RWH_WRITE_LIFE_NONE
#define RWH_WRITE_LIFE_NOT_SET	0
#define RWH_WRITE_LIFE_NONE	1
#define RWH_WRITE_LIFE_SHORT	2
#define RWH_WRITE_LIFE_MEDIUM	3
#define RWH_WRITE_LIFE_LONG	4
#define RWH_WRITE_LIFE_EXTREME	5
#endif

#define FIO_HAVE_WRITE_HINT

#ifndef RWF_HIPRI
#define RWF_HIPRI	0x00000001
#endif
#ifndef RWF_DSYNC
#define RWF_DSYNC	0x00000002
#endif
#ifndef RWF_SYNC
#define RWF_SYNC	0x00000004
#endif
#ifndef RWF_NOWAIT
#define RWF_NOWAIT	0x00000008
#endif

#ifndef RWF_UNCACHED
#define RWF_UNCACHED	0x00000040
#endif

#ifndef RWF_WRITE_LIFE_SHIFT
#define RWF_WRITE_LIFE_SHIFT		4
#define RWF_WRITE_LIFE_SHORT		(1 << RWF_WRITE_LIFE_SHIFT)
#define RWF_WRITE_LIFE_MEDIUM		(2 << RWF_WRITE_LIFE_SHIFT)
#define RWF_WRITE_LIFE_LONG		(3 << RWF_WRITE_LIFE_SHIFT)
#define RWF_WRITE_LIFE_EXTREME		(4 << RWF_WRITE_LIFE_SHIFT)
#endif

#ifndef CONFIG_PWRITEV2
#ifdef __NR_preadv2
static inline void make_pos_h_l(unsigned long *pos_h, unsigned long *pos_l,
				off_t offset)
{
#if BITS_PER_LONG == 64
	*pos_l = offset;
	*pos_h = 0;
#else
	*pos_l = offset & 0xffffffff;
	*pos_h = ((uint64_t) offset) >> 32;
#endif
}
static inline ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt,
			      off_t offset, unsigned int flags)
{
	unsigned long pos_l, pos_h;

	make_pos_h_l(&pos_h, &pos_l, offset);
	return syscall(__NR_preadv2, fd, iov, iovcnt, pos_l, pos_h, flags);
}
static inline ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt,
			       off_t offset, unsigned int flags)
{
	unsigned long pos_l, pos_h;

	make_pos_h_l(&pos_h, &pos_l, offset);
	return syscall(__NR_pwritev2, fd, iov, iovcnt, pos_l, pos_h, flags);
}
#else
static inline ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt,
			      off_t offset, unsigned int flags)
{
	errno = ENOSYS;
	return -1;
}
static inline ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt,
			       off_t offset, unsigned int flags)
{
	errno = ENOSYS;
	return -1;
}
#endif /* __NR_preadv2 */
#endif /* CONFIG_PWRITEV2 */

static inline int shm_attach_to_open_removed(void)
{
	return 1;
}

#ifdef CONFIG_LINUX_FALLOCATE
#define FIO_HAVE_NATIVE_FALLOCATE
static inline bool fio_fallocate(struct fio_file *f, uint64_t offset,
				 uint64_t len)
{
	int ret;
	ret = fallocate(f->fd, 0, offset, len);
	if (ret == 0)
		return true;

	/* Work around buggy old glibc versions... */
	if (ret > 0)
		errno = ret;

	return false;
}
#endif

#define FIO_HAVE_CPU_HAS
static inline bool os_cpu_has(cpu_features feature)
{
	bool have_feature;
	unsigned long fio_unused hwcap;

	switch (feature) {
#ifdef ARCH_HAVE_CRC_CRYPTO
	case CPU_ARM64_CRC32C:
		hwcap = getauxval(AT_HWCAP);
		have_feature = (hwcap & HWCAP_CRC32) != 0;
		break;
#endif
	default:
		have_feature = false;
	}

	return have_feature;
}

#endif
Commit	Line	Data
ebac4655 JA	1	#ifndef FIO_OS_LINUX_H
	2	#define FIO_OS_LINUX_H
	3
cca84643 JA	4	#define FIO_OS os_linux
cca84643 JA	5
ebac4655	6	#include <sys/ioctl.h>
8756e4d4	7	#include <sys/uio.h>
3c39a379	8	#include <sys/syscall.h>
250e878a	9	#include <sys/sysmacros.h>
2e3bd4c2	10	#include <sys/vfs.h>
39b93568	11	#include <sys/mman.h>
3c39a379	12	#include <unistd.h>
97fbdfa1	13	#include <fcntl.h>
3c2d93ed	14	#include <errno.h>
d09913c2	15	#include <sched.h>
ea421790	16	#include <linux/unistd.h>
07e5b264 JA	17	#include <linux/raw.h>
07e5b264 JA	18	#include <linux/major.h>
1894d171 TK	19	#include <linux/fs.h>
1894d171 TK	20	#include <scsi/sg.h>
ebac4655	21
58828d07 SW	22	#ifdef ARCH_HAVE_CRC_CRYPTO
	23	#include <sys/auxv.h>
	24	#ifndef HWCAP_CRC32
	25	#define HWCAP_CRC32 (1 << 7)
	26	#endif /* HWCAP_CRC32 */
	27	#endif /* ARCH_HAVE_CRC_CRYPTO */
	28
1c764dbe	29	#include "./os-linux-syscall.h"
e2e58886	30	#include "../file.h"
f3de88a7	31
7922a7b7 OM	32	#ifndef __has_builtin // Optional of course.
	33	#define __has_builtin(x) 0 // Compatibility with non-clang compilers.
	34	#endif
	35
ebac4655 JA	36	#define FIO_HAVE_CPU_AFFINITY
	37	#define FIO_HAVE_DISK_UTIL
	38	#define FIO_HAVE_SGIO
ba4f8923	39	#define FIO_HAVE_IOPRIO
32ef447a	40	#define FIO_HAVE_IOPRIO_CLASS
22f78b32	41	#define FIO_HAVE_IOSCHED_SWITCH
2c0ecd28	42	#define FIO_HAVE_ODIRECT
74b025b0	43	#define FIO_HAVE_HUGETLB
07e5b264	44	#define FIO_HAVE_RAWBIND
5e62c22a	45	#define FIO_HAVE_BLKTRACE
eb7ccf38	46	#define FIO_HAVE_CL_SIZE
a696fa2a	47	#define FIO_HAVE_CGROUPS
2e3bd4c2	48	#define FIO_HAVE_FS_STAT
a5f3027c	49	#define FIO_HAVE_TRIM
47f767c1	50	#define FIO_HAVE_GETTID
93bcfd20	51	#define FIO_USE_GENERIC_INIT_RANDOM_STATE
6562685f	52	#define FIO_HAVE_PWRITEV2
97900ebf	53	#define FIO_HAVE_SHM_ATTACH_REMOVED
b6959b55	54
39b93568 JA	55	#ifdef MAP_HUGETLB
	56	#define FIO_HAVE_MMAP_HUGE
	57	#endif
	58
dc873b6f	59	#define OS_MAP_ANON MAP_ANONYMOUS
ebac4655	60
4db9ac71	61	#define FIO_EXT_ENG_DIR "/usr/local/lib/fio"
5a8a6a03	62
ebac4655	63	typedef cpu_set_t os_cpu_mask_t;
4e78e405	64
67bf9823	65	#ifdef CONFIG_3ARG_AFFINITY
e8462bd8 JA	66	#define fio_setaffinity(pid, cpumask) \
e8462bd8 JA	67	sched_setaffinity((pid), sizeof(cpumask), &(cpumask))
ebac4655 JA	68	#define fio_getaffinity(pid, ptr) \
ebac4655 JA	69	sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
67bf9823	70	#elif defined(CONFIG_2ARG_AFFINITY)
e8462bd8 JA	71	#define fio_setaffinity(pid, cpumask) \
e8462bd8 JA	72	sched_setaffinity((pid), &(cpumask))
c8f025f8 JA	73	#define fio_getaffinity(pid, ptr) \
	74	sched_getaffinity((pid), (ptr))
	75	#endif
be4ecfdf	76
874d55e5 JA	77	#define fio_get_thread_affinity(mask) \
	78	pthread_getaffinity_np(pthread_self(), sizeof(mask), &(mask))
	79
1f4c0a4f JA	80	#define fio_cpu_clear(mask, cpu) (void) CPU_CLR((cpu), (mask))
1f4c0a4f JA	81	#define fio_cpu_set(mask, cpu) (void) CPU_SET((cpu), (mask))
52fd65f4	82	#define fio_cpu_isset(mask, cpu) (CPU_ISSET((cpu), (mask)) != 0)
d004a209	83	#define fio_cpu_count(mask) CPU_COUNT((mask))
d2ce18b5 JA	84
	85	static inline int fio_cpuset_init(os_cpu_mask_t *mask)
	86	{
	87	CPU_ZERO(mask);
	88	return 0;
	89	}
	90
	91	static inline int fio_cpuset_exit(os_cpu_mask_t *mask)
	92	{
	93	return 0;
	94	}
6d459ee7 JA	95
6d459ee7 JA	96	#define FIO_MAX_CPUS CPU_SETSIZE
4d8947de	97
28727df7 JA	98	enum {
	99	IOPRIO_CLASS_NONE,
	100	IOPRIO_CLASS_RT,
	101	IOPRIO_CLASS_BE,
	102	IOPRIO_CLASS_IDLE,
	103	};
	104
	105	enum {
	106	IOPRIO_WHO_PROCESS = 1,
	107	IOPRIO_WHO_PGRP,
	108	IOPRIO_WHO_USER,
	109	};
	110
	111	#define IOPRIO_BITS 16
	112	#define IOPRIO_CLASS_SHIFT 13
	113
1767bd34 TK	114	#define IOPRIO_MIN_PRIO 0 /* highest priority */
	115	#define IOPRIO_MAX_PRIO 7 /* lowest priority */
	116
	117	#define IOPRIO_MIN_PRIO_CLASS 0
	118	#define IOPRIO_MAX_PRIO_CLASS 3
	119
28727df7	120	static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
ebac4655	121	{
28727df7 JA	122	/*
	123	* If no class is set, assume BE
	124	*/
	125	if (!ioprio_class)
	126	ioprio_class = IOPRIO_CLASS_BE;
	127
	128	ioprio \|= ioprio_class << IOPRIO_CLASS_SHIFT;
ebac4655 JA	129	return syscall(__NR_ioprio_set, which, who, ioprio);
	130	}
	131
de5ed0e4	132	#ifndef CONFIG_HAVE_GETTID
47f767c1 JA	133	static inline int gettid(void)
	134	{
	135	return syscall(__NR_gettid);
	136	}
de5ed0e4	137	#endif
47f767c1	138
3feedc60 JA	139	#define SPLICE_DEF_SIZE (64*1024)
3feedc60 JA	140
ebac4655 JA	141	#ifndef BLKGETSIZE64
	142	#define BLKGETSIZE64 _IOR(0x12,114,size_t)
	143	#endif
	144
e5b401d4 JA	145	#ifndef BLKFLSBUF
	146	#define BLKFLSBUF _IO(0x12,97)
	147	#endif
	148
a5f3027c JA	149	#ifndef BLKDISCARD
	150	#define BLKDISCARD _IO(0x12,119)
	151	#endif
	152
e2e58886	153	static inline int blockdev_invalidate_cache(struct fio_file *f)
e5b401d4	154	{
ecc314ba	155	return ioctl(f->fd, BLKFLSBUF);
e5b401d4 JA	156	}
e5b401d4 JA	157
ecc314ba	158	static inline int blockdev_size(struct fio_file f, unsigned long long bytes)
ebac4655	159	{
ecc314ba	160	if (!ioctl(f->fd, BLKGETSIZE64, bytes))
ebac4655 JA	161	return 0;
	162
	163	return errno;
	164	}
	165
32cd46a0 JA	166	static inline unsigned long long os_phys_mem(void)
	167	{
	168	long pagesize, pages;
	169
	170	pagesize = sysconf(_SC_PAGESIZE);
	171	pages = sysconf(_SC_PHYS_PAGES);
	172	if (pages == -1 \|\| pagesize == -1)
	173	return 0;
	174
	175	return (unsigned long long) pages * (unsigned long long) pagesize;
	176	}
	177
8cc7afa9	178	static inline int fio_lookup_raw(dev_t dev, int majdev, int mindev)
07e5b264 JA	179	{
	180	struct raw_config_request rq;
	181	int fd;
	182
	183	if (major(dev) != RAW_MAJOR)
8cc7afa9	184	return 1;
07e5b264 JA	185
	186	/*
	187	* we should be able to find /dev/rawctl or /dev/raw/rawctl
	188	*/
	189	fd = open("/dev/rawctl", O_RDONLY);
	190	if (fd < 0) {
	191	fd = open("/dev/raw/rawctl", O_RDONLY);
	192	if (fd < 0)
8cc7afa9	193	return 1;
07e5b264 JA	194	}
	195
	196	rq.raw_minor = minor(dev);
	197	if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
	198	close(fd);
8cc7afa9	199	return 1;
07e5b264 JA	200	}
	201
	202	close(fd);
	203	*majdev = rq.block_major;
	204	*mindev = rq.block_minor;
8cc7afa9	205	return 0;
07e5b264 JA	206	}
07e5b264 JA	207
5b6f5c66	208	#ifdef O_NOATIME
5921e80c	209	#define FIO_O_NOATIME O_NOATIME
5b6f5c66 JA	210	#else
	211	#define FIO_O_NOATIME 0
	212	#endif
5921e80c	213
d01612f3 CM	214	#ifdef O_ATOMIC
	215	#define OS_O_ATOMIC O_ATOMIC
	216	#else
	217	#define OS_O_ATOMIC 040000000
	218	#endif
	219
a1c58075 JA	220	#ifdef MADV_REMOVE
	221	#define FIO_MADV_FREE MADV_REMOVE
	222	#endif
	223
7922a7b7 OM	224	/* Check for GCC or Clang byte swap intrinsics */
	225	#if (__has_builtin(__builtin_bswap16) && __has_builtin(__builtin_bswap32) \
	226	&& __has_builtin(__builtin_bswap64)) \|\| (__GNUC__ > 4 \
	227	\|\| (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)) /* fio_swapN */
df73aab1	228	#define fio_swap16(x) __builtin_bswap16(x)
df73aab1	229	#define fio_swap32(x) __builtin_bswap32(x)
df73aab1 JA	230	#define fio_swap64(x) __builtin_bswap64(x)
df73aab1 JA	231	#else
7922a7b7 OM	232	#include <byteswap.h>
	233	#define fio_swap16(x) bswap_16(x)
	234	#define fio_swap32(x) bswap_32(x)
	235	#define fio_swap64(x) bswap_64(x)
	236	#endif /* fio_swapN */
ff245192	237
eb7ccf38 JA	238	#define CACHE_LINE_FILE \
	239	"/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
	240
	241	static inline int arch_cache_line_size(void)
	242	{
	243	char size[32];
	244	int fd, ret;
	245
	246	fd = open(CACHE_LINE_FILE, O_RDONLY);
	247	if (fd < 0)
	248	return -1;
	249
	250	ret = read(fd, size, sizeof(size));
ec76f15a JA	251
	252	close(fd);
	253
eb7ccf38 JA	254	if (ret <= 0)
eb7ccf38 JA	255	return -1;
ec76f15a JA	256	else
ec76f15a JA	257	return atoi(size);
eb7ccf38 JA	258	}
eb7ccf38 JA	259
d1419c4f TK	260	#ifdef __powerpc64__
	261	#define FIO_HAVE_CPU_ONLINE_SYSCONF
	262	static inline unsigned int cpus_online(void)
	263	{
	264	return sysconf(_SC_NPROCESSORS_CONF);
	265	}
	266	#endif
	267
c08ad04c	268	static inline unsigned long long get_fs_free_size(const char *path)
2e3bd4c2 JA	269	{
	270	unsigned long long ret;
	271	struct statfs s;
	272
	273	if (statfs(path, &s) < 0)
	274	return -1ULL;
	275
	276	ret = s.f_bsize;
	277	ret *= (unsigned long long) s.f_bfree;
	278	return ret;
	279	}
	280
496b1f9e	281	static inline int os_trim(struct fio_file *f, unsigned long long start,
a5f3027c JA	282	unsigned long long len)
	283	{
	284	uint64_t range[2];
	285
	286	range[0] = start;
	287	range[1] = len;
	288
496b1f9e	289	if (!ioctl(f->fd, BLKDISCARD, range))
a5f3027c JA	290	return 0;
	291
	292	return errno;
	293	}
	294
7e09a9f1	295	#ifdef CONFIG_SCHED_IDLE
f2a2ce0e HL	296	static inline int fio_set_sched_idle(void)
	297	{
	298	struct sched_param p = { .sched_priority = 0, };
	299	return sched_setscheduler(gettid(), SCHED_IDLE, &p);
	300	}
7e09a9f1	301	#endif
f2a2ce0e	302
ae8e559e JA	303	#ifndef F_GET_RW_HINT
	304	#ifndef F_LINUX_SPECIFIC_BASE
	305	#define F_LINUX_SPECIFIC_BASE 1024
	306	#endif
	307	#define F_GET_RW_HINT (F_LINUX_SPECIFIC_BASE + 11)
	308	#define F_SET_RW_HINT (F_LINUX_SPECIFIC_BASE + 12)
bd553af6 JA	309	#define F_GET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 13)
bd553af6 JA	310	#define F_SET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 14)
ae8e559e JA	311	#endif
	312
	313	#ifndef RWH_WRITE_LIFE_NONE
bd553af6 JA	314	#define RWH_WRITE_LIFE_NOT_SET 0
	315	#define RWH_WRITE_LIFE_NONE 1
	316	#define RWH_WRITE_LIFE_SHORT 2
	317	#define RWH_WRITE_LIFE_MEDIUM 3
	318	#define RWH_WRITE_LIFE_LONG 4
	319	#define RWH_WRITE_LIFE_EXTREME 5
37659335 JA	320	#endif
37659335 JA	321
ae8e559e	322	#define FIO_HAVE_WRITE_HINT
37659335	323
6562685f JA	324	#ifndef RWF_HIPRI
	325	#define RWF_HIPRI 0x00000001
	326	#endif
	327	#ifndef RWF_DSYNC
	328	#define RWF_DSYNC 0x00000002
	329	#endif
	330	#ifndef RWF_SYNC
	331	#define RWF_SYNC 0x00000004
	332	#endif
7d42e66e KK	333	#ifndef RWF_NOWAIT
	334	#define RWF_NOWAIT 0x00000008
	335	#endif
6562685f	336
4a87b584	337	#ifndef RWF_UNCACHED
8beee62d	338	#define RWF_UNCACHED 0x00000040
4a87b584 JA	339	#endif
4a87b584 JA	340
72cd4146 JA	341	#ifndef RWF_WRITE_LIFE_SHIFT
	342	#define RWF_WRITE_LIFE_SHIFT 4
	343	#define RWF_WRITE_LIFE_SHORT (1 << RWF_WRITE_LIFE_SHIFT)
	344	#define RWF_WRITE_LIFE_MEDIUM (2 << RWF_WRITE_LIFE_SHIFT)
	345	#define RWF_WRITE_LIFE_LONG (3 << RWF_WRITE_LIFE_SHIFT)
	346	#define RWF_WRITE_LIFE_EXTREME (4 << RWF_WRITE_LIFE_SHIFT)
	347	#endif
	348
6562685f JA	349	#ifndef CONFIG_PWRITEV2
	350	#ifdef __NR_preadv2
	351	static inline void make_pos_h_l(unsigned long pos_h, unsigned long pos_l,
	352	off_t offset)
	353	{
7b5c648f	354	#if BITS_PER_LONG == 64
7b5c648f JA	355	*pos_l = offset;
	356	*pos_h = 0;
	357	#else
6562685f JA	358	*pos_l = offset & 0xffffffff;
6562685f JA	359	*pos_h = ((uint64_t) offset) >> 32;
7b5c648f	360	#endif
6562685f JA	361	}
	362	static inline ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt,
	363	off_t offset, unsigned int flags)
	364	{
	365	unsigned long pos_l, pos_h;
	366
	367	make_pos_h_l(&pos_h, &pos_l, offset);
	368	return syscall(__NR_preadv2, fd, iov, iovcnt, pos_l, pos_h, flags);
	369	}
	370	static inline ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt,
	371	off_t offset, unsigned int flags)
	372	{
	373	unsigned long pos_l, pos_h;
	374
	375	make_pos_h_l(&pos_h, &pos_l, offset);
	376	return syscall(__NR_pwritev2, fd, iov, iovcnt, pos_l, pos_h, flags);
	377	}
	378	#else
	379	static inline ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt,
	380	off_t offset, unsigned int flags)
	381	{
	382	errno = ENOSYS;
	383	return -1;
	384	}
	385	static inline ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt,
	386	off_t offset, unsigned int flags)
	387	{
	388	errno = ENOSYS;
	389	return -1;
	390	}
	391	#endif /* __NR_preadv2 */
	392	#endif /* CONFIG_PWRITEV2 */
	393
0cfe2089 TK	394	static inline int shm_attach_to_open_removed(void)
	395	{
	396	return 1;
	397	}
	398
2c3e17be SW	399	#ifdef CONFIG_LINUX_FALLOCATE
	400	#define FIO_HAVE_NATIVE_FALLOCATE
	401	static inline bool fio_fallocate(struct fio_file *f, uint64_t offset,
	402	uint64_t len)
	403	{
	404	int ret;
e69dfc2b	405	ret = fallocate(f->fd, 0, offset, len);
2c3e17be SW	406	if (ret == 0)
	407	return true;
	408
	409	/* Work around buggy old glibc versions... */
	410	if (ret > 0)
	411	errno = ret;
	412
	413	return false;
	414	}
	415	#endif
	416
58828d07 SW	417	#define FIO_HAVE_CPU_HAS
	418	static inline bool os_cpu_has(cpu_features feature)
	419	{
	420	bool have_feature;
	421	unsigned long fio_unused hwcap;
	422
	423	switch (feature) {
	424	#ifdef ARCH_HAVE_CRC_CRYPTO
	425	case CPU_ARM64_CRC32C:
	426	hwcap = getauxval(AT_HWCAP);
	427	have_feature = (hwcap & HWCAP_CRC32) != 0;
	428	break;
	429	#endif
	430	default:
	431	have_feature = false;
	432	}
	433
	434	return have_feature;
	435	}
	436
ebac4655	437	#endif