[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 <byteswap.h>

#include "binject.h"
#include "../file.h"

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

#ifdef MAP_HUGETLB
#define FIO_HAVE_MMAP_HUGE
#endif

#define OS_MAP_ANON		MAP_ANONYMOUS

typedef cpu_set_t os_cpu_mask_t;

typedef struct drand48_data os_random_state_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_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))
#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);
}

static inline int gettid(void)
{
	return syscall(__NR_gettid);
}

#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 void os_random_seed(unsigned long seed, os_random_state_t *rs)
{
	srand48_r(seed, rs);
}

static inline long os_random_long(os_random_state_t *rs)
{
	long val;

	lrand48_r(rs, &val);
	return val;
}

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

#if defined(__builtin_bswap16)
#define fio_swap16(x)	__builtin_bswap16(x)
#else
#define fio_swap16(x)	__bswap_16(x)
#endif
#if defined(__builtin_bswap32)
#define fio_swap32(x)	__builtin_bswap32(x)
#else
#define fio_swap32(x)	__bswap_32(x)
#endif
#if defined(__builtin_bswap64)
#define fio_swap64(x)	__builtin_bswap64(x)
#else
#define fio_swap64(x)	__bswap_64(x)
#endif

#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);
}

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(int fd, unsigned long long start,
			  unsigned long long len)
{
	uint64_t range[2];

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

	if (!ioctl(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 POSIX_FADV_STREAMID
#define POSIX_FADV_STREAMID	8
#endif

#define FIO_HAVE_STREAMID

#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 CONFIG_PWRITEV2
#ifdef __NR_preadv2
static inline void make_pos_h_l(unsigned long *pos_h, unsigned long *pos_l,
				off_t offset)
{
	*pos_l = offset & 0xffffffff;
	*pos_h = ((uint64_t) offset) >> 32;

}
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 */

#endif
Commit	Line	Data
	1	#ifndef FIO_OS_LINUX_H
	2	#define FIO_OS_LINUX_H
	3
	4	#define FIO_OS os_linux
	5
	6	#include <sys/ioctl.h>
	7	#include <sys/uio.h>
	8	#include <sys/syscall.h>
	9	#include <sys/sysmacros.h>
	10	#include <sys/vfs.h>
	11	#include <sys/mman.h>
	12	#include <unistd.h>
	13	#include <fcntl.h>
	14	#include <errno.h>
	15	#include <sched.h>
	16	#include <linux/unistd.h>
	17	#include <linux/raw.h>
	18	#include <linux/major.h>
	19	#include <byteswap.h>
	20
	21	#include "binject.h"
	22	#include "../file.h"
	23
	24	#define FIO_HAVE_CPU_AFFINITY
	25	#define FIO_HAVE_DISK_UTIL
	26	#define FIO_HAVE_SGIO
	27	#define FIO_HAVE_IOPRIO
	28	#define FIO_HAVE_IOSCHED_SWITCH
	29	#define FIO_HAVE_ODIRECT
	30	#define FIO_HAVE_HUGETLB
	31	#define FIO_HAVE_RAWBIND
	32	#define FIO_HAVE_BLKTRACE
	33	#define FIO_HAVE_PSHARED_MUTEX
	34	#define FIO_HAVE_CL_SIZE
	35	#define FIO_HAVE_CGROUPS
	36	#define FIO_HAVE_FS_STAT
	37	#define FIO_HAVE_TRIM
	38	#define FIO_HAVE_BINJECT
	39	#define FIO_HAVE_GETTID
	40	#define FIO_USE_GENERIC_INIT_RANDOM_STATE
	41	#define FIO_HAVE_PWRITEV2
	42
	43	#ifdef MAP_HUGETLB
	44	#define FIO_HAVE_MMAP_HUGE
	45	#endif
	46
	47	#define OS_MAP_ANON MAP_ANONYMOUS
	48
	49	typedef cpu_set_t os_cpu_mask_t;
	50
	51	typedef struct drand48_data os_random_state_t;
	52
	53	#ifdef CONFIG_3ARG_AFFINITY
	54	#define fio_setaffinity(pid, cpumask) \
	55	sched_setaffinity((pid), sizeof(cpumask), &(cpumask))
	56	#define fio_getaffinity(pid, ptr) \
	57	sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
	58	#elif defined(CONFIG_2ARG_AFFINITY)
	59	#define fio_setaffinity(pid, cpumask) \
	60	sched_setaffinity((pid), &(cpumask))
	61	#define fio_getaffinity(pid, ptr) \
	62	sched_getaffinity((pid), (ptr))
	63	#endif
	64
	65	#define fio_cpu_clear(mask, cpu) (void) CPU_CLR((cpu), (mask))
	66	#define fio_cpu_set(mask, cpu) (void) CPU_SET((cpu), (mask))
	67	#define fio_cpu_isset(mask, cpu) CPU_ISSET((cpu), (mask))
	68	#define fio_cpu_count(mask) CPU_COUNT((mask))
	69
	70	static inline int fio_cpuset_init(os_cpu_mask_t *mask)
	71	{
	72	CPU_ZERO(mask);
	73	return 0;
	74	}
	75
	76	static inline int fio_cpuset_exit(os_cpu_mask_t *mask)
	77	{
	78	return 0;
	79	}
	80
	81	#define FIO_MAX_CPUS CPU_SETSIZE
	82
	83	enum {
	84	IOPRIO_CLASS_NONE,
	85	IOPRIO_CLASS_RT,
	86	IOPRIO_CLASS_BE,
	87	IOPRIO_CLASS_IDLE,
	88	};
	89
	90	enum {
	91	IOPRIO_WHO_PROCESS = 1,
	92	IOPRIO_WHO_PGRP,
	93	IOPRIO_WHO_USER,
	94	};
	95
	96	#define IOPRIO_BITS 16
	97	#define IOPRIO_CLASS_SHIFT 13
	98
	99	#define IOPRIO_MIN_PRIO 0 /* highest priority */
	100	#define IOPRIO_MAX_PRIO 7 /* lowest priority */
	101
	102	#define IOPRIO_MIN_PRIO_CLASS 0
	103	#define IOPRIO_MAX_PRIO_CLASS 3
	104
	105	static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
	106	{
	107	/*
	108	* If no class is set, assume BE
	109	*/
	110	if (!ioprio_class)
	111	ioprio_class = IOPRIO_CLASS_BE;
	112
	113	ioprio \|= ioprio_class << IOPRIO_CLASS_SHIFT;
	114	return syscall(__NR_ioprio_set, which, who, ioprio);
	115	}
	116
	117	static inline int gettid(void)
	118	{
	119	return syscall(__NR_gettid);
	120	}
	121
	122	#define SPLICE_DEF_SIZE (64*1024)
	123
	124	#ifndef BLKGETSIZE64
	125	#define BLKGETSIZE64 _IOR(0x12,114,size_t)
	126	#endif
	127
	128	#ifndef BLKFLSBUF
	129	#define BLKFLSBUF _IO(0x12,97)
	130	#endif
	131
	132	#ifndef BLKDISCARD
	133	#define BLKDISCARD _IO(0x12,119)
	134	#endif
	135
	136	static inline int blockdev_invalidate_cache(struct fio_file *f)
	137	{
	138	return ioctl(f->fd, BLKFLSBUF);
	139	}
	140
	141	static inline int blockdev_size(struct fio_file f, unsigned long long bytes)
	142	{
	143	if (!ioctl(f->fd, BLKGETSIZE64, bytes))
	144	return 0;
	145
	146	return errno;
	147	}
	148
	149	static inline unsigned long long os_phys_mem(void)
	150	{
	151	long pagesize, pages;
	152
	153	pagesize = sysconf(_SC_PAGESIZE);
	154	pages = sysconf(_SC_PHYS_PAGES);
	155	if (pages == -1 \|\| pagesize == -1)
	156	return 0;
	157
	158	return (unsigned long long) pages * (unsigned long long) pagesize;
	159	}
	160
	161	static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
	162	{
	163	srand48_r(seed, rs);
	164	}
	165
	166	static inline long os_random_long(os_random_state_t *rs)
	167	{
	168	long val;
	169
	170	lrand48_r(rs, &val);
	171	return val;
	172	}
	173
	174	static inline int fio_lookup_raw(dev_t dev, int majdev, int mindev)
	175	{
	176	struct raw_config_request rq;
	177	int fd;
	178
	179	if (major(dev) != RAW_MAJOR)
	180	return 1;
	181
	182	/*
	183	* we should be able to find /dev/rawctl or /dev/raw/rawctl
	184	*/
	185	fd = open("/dev/rawctl", O_RDONLY);
	186	if (fd < 0) {
	187	fd = open("/dev/raw/rawctl", O_RDONLY);
	188	if (fd < 0)
	189	return 1;
	190	}
	191
	192	rq.raw_minor = minor(dev);
	193	if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
	194	close(fd);
	195	return 1;
	196	}
	197
	198	close(fd);
	199	*majdev = rq.block_major;
	200	*mindev = rq.block_minor;
	201	return 0;
	202	}
	203
	204	#ifdef O_NOATIME
	205	#define FIO_O_NOATIME O_NOATIME
	206	#else
	207	#define FIO_O_NOATIME 0
	208	#endif
	209
	210	#ifdef O_ATOMIC
	211	#define OS_O_ATOMIC O_ATOMIC
	212	#else
	213	#define OS_O_ATOMIC 040000000
	214	#endif
	215
	216	#ifdef MADV_REMOVE
	217	#define FIO_MADV_FREE MADV_REMOVE
	218	#endif
	219
	220	#if defined(__builtin_bswap16)
	221	#define fio_swap16(x) __builtin_bswap16(x)
	222	#else
	223	#define fio_swap16(x) __bswap_16(x)
	224	#endif
	225	#if defined(__builtin_bswap32)
	226	#define fio_swap32(x) __builtin_bswap32(x)
	227	#else
	228	#define fio_swap32(x) __bswap_32(x)
	229	#endif
	230	#if defined(__builtin_bswap64)
	231	#define fio_swap64(x) __builtin_bswap64(x)
	232	#else
	233	#define fio_swap64(x) __bswap_64(x)
	234	#endif
	235
	236	#define CACHE_LINE_FILE \
	237	"/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
	238
	239	static inline int arch_cache_line_size(void)
	240	{
	241	char size[32];
	242	int fd, ret;
	243
	244	fd = open(CACHE_LINE_FILE, O_RDONLY);
	245	if (fd < 0)
	246	return -1;
	247
	248	ret = read(fd, size, sizeof(size));
	249
	250	close(fd);
	251
	252	if (ret <= 0)
	253	return -1;
	254	else
	255	return atoi(size);
	256	}
	257
	258	static inline unsigned long long get_fs_free_size(const char *path)
	259	{
	260	unsigned long long ret;
	261	struct statfs s;
	262
	263	if (statfs(path, &s) < 0)
	264	return -1ULL;
	265
	266	ret = s.f_bsize;
	267	ret *= (unsigned long long) s.f_bfree;
	268	return ret;
	269	}
	270
	271	static inline int os_trim(int fd, unsigned long long start,
	272	unsigned long long len)
	273	{
	274	uint64_t range[2];
	275
	276	range[0] = start;
	277	range[1] = len;
	278
	279	if (!ioctl(fd, BLKDISCARD, range))
	280	return 0;
	281
	282	return errno;
	283	}
	284
	285	#ifdef CONFIG_SCHED_IDLE
	286	static inline int fio_set_sched_idle(void)
	287	{
	288	struct sched_param p = { .sched_priority = 0, };
	289	return sched_setscheduler(gettid(), SCHED_IDLE, &p);
	290	}
	291	#endif
	292
	293	#ifndef POSIX_FADV_STREAMID
	294	#define POSIX_FADV_STREAMID 8
	295	#endif
	296
	297	#define FIO_HAVE_STREAMID
	298
	299	#ifndef RWF_HIPRI
	300	#define RWF_HIPRI 0x00000001
	301	#endif
	302	#ifndef RWF_DSYNC
	303	#define RWF_DSYNC 0x00000002
	304	#endif
	305	#ifndef RWF_SYNC
	306	#define RWF_SYNC 0x00000004
	307	#endif
	308
	309	#ifndef CONFIG_PWRITEV2
	310	#ifdef __NR_preadv2
	311	static inline void make_pos_h_l(unsigned long pos_h, unsigned long pos_l,
	312	off_t offset)
	313	{
	314	*pos_l = offset & 0xffffffff;
	315	*pos_h = ((uint64_t) offset) >> 32;
	316
	317	}
	318	static inline ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt,
	319	off_t offset, unsigned int flags)
	320	{
	321	unsigned long pos_l, pos_h;
	322
	323	make_pos_h_l(&pos_h, &pos_l, offset);
	324	return syscall(__NR_preadv2, fd, iov, iovcnt, pos_l, pos_h, flags);
	325	}
	326	static inline ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt,
	327	off_t offset, unsigned int flags)
	328	{
	329	unsigned long pos_l, pos_h;
	330
	331	make_pos_h_l(&pos_h, &pos_l, offset);
	332	return syscall(__NR_pwritev2, fd, iov, iovcnt, pos_l, pos_h, flags);
	333	}
	334	#else
	335	static inline ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt,
	336	off_t offset, unsigned int flags)
	337	{
	338	errno = ENOSYS;
	339	return -1;
	340	}
	341	static inline ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt,
	342	off_t offset, unsigned int flags)
	343	{
	344	errno = ENOSYS;
	345	return -1;
	346	}
	347	#endif /* __NR_preadv2 */
	348	#endif /* CONFIG_PWRITEV2 */
	349
	350	#endif