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

#ifndef FIO_OS_ANDROID_H
#define FIO_OS_ANDROID_H

#define	FIO_OS	os_android

#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/uio.h>
#include <sys/syscall.h>
#include <sys/sysmacros.h>
#include <sys/vfs.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sched.h>
#include <linux/unistd.h>
#include <linux/major.h>
#include <asm/byteorder.h>

#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_IOSCHED_SWITCH
#define FIO_HAVE_IOPRIO
#define FIO_HAVE_IOPRIO_CLASS
#define FIO_HAVE_ODIRECT
#define FIO_HAVE_HUGETLB
#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_E4_ENG
#define FIO_HAVE_BYTEORDER_FUNCS
#define FIO_HAVE_MMAP_HUGE
#define FIO_NO_HAVE_SHM_H

#define OS_MAP_ANON		MAP_ANONYMOUS

typedef cpu_set_t os_cpu_mask_t;

#define fio_setaffinity(pid, cpumask)		\
	sched_setaffinity((pid), sizeof(cpumask), &(cpumask))
#define fio_getaffinity(pid, ptr)	\
	sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))

#ifndef POSIX_MADV_DONTNEED
#define posix_madvise   madvise
#define POSIX_MADV_DONTNEED MADV_DONTNEED
#define POSIX_MADV_SEQUENTIAL	MADV_SEQUENTIAL
#define POSIX_MADV_RANDOM	MADV_RANDOM
#endif

#ifdef MADV_REMOVE
#define FIO_MADV_FREE	MADV_REMOVE
#endif
#ifndef MAP_HUGETLB
#define MAP_HUGETLB 0x40000 /* arch specific */
#endif

#ifdef CONFIG_PTHREAD_GETAFFINITY
#define FIO_HAVE_GET_THREAD_AFFINITY
#define fio_get_thread_affinity(mask)	\
	pthread_getaffinity_np(pthread_self(), sizeof(mask), &(mask))
#endif

#define fio_cpu_clear(mask, cpu)	CPU_CLR((cpu), (mask))
#define fio_cpu_set(mask, cpu)		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

#ifndef CONFIG_NO_SHM
/*
 * Bionic doesn't support SysV shared memory, so implement it using ashmem
 */
#include <stdio.h>
#include <linux/ashmem.h>
#include <linux/shm.h>
#include <android/api-level.h>
#if __ANDROID_API__ >= __ANDROID_API_O__
#include <android/sharedmem.h>
#else
#define ASHMEM_DEVICE	"/dev/ashmem"
#endif
#define shmid_ds shmid64_ds
#define SHM_HUGETLB    04000

static inline int shmctl(int __shmid, int __cmd, struct shmid_ds *__buf)
{
	int ret=0;
	if (__cmd == IPC_RMID)
	{
		int length = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
		struct ashmem_pin pin = {0 , length};
		ret = ioctl(__shmid, ASHMEM_UNPIN, &pin);
		close(__shmid);
	}
	return ret;
}

#if __ANDROID_API__ >= __ANDROID_API_O__
static inline int shmget(key_t __key, size_t __size, int __shmflg)
{
	char keybuf[11];

	sprintf(keybuf, "%d", __key);

	return ASharedMemory_create(keybuf, __size + sizeof(uint64_t));
}
#else
static inline int shmget(key_t __key, size_t __size, int __shmflg)
{
	int fd,ret;
	char keybuf[11];

	fd = open(ASHMEM_DEVICE, O_RDWR);
	if (fd < 0)
		return fd;

	sprintf(keybuf,"%d",__key);
	ret = ioctl(fd, ASHMEM_SET_NAME, keybuf);
	if (ret < 0)
		goto error;

	/* Stores size in first 8 bytes, allocate extra space */
	ret = ioctl(fd, ASHMEM_SET_SIZE, __size + sizeof(uint64_t));
	if (ret < 0)
		goto error;

	return fd;

error:
	close(fd);
	return ret;
}
#endif

static inline void *shmat(int __shmid, const void *__shmaddr, int __shmflg)
{
	size_t size = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
	/* Needs to be 8-byte aligned to prevent SIGBUS on 32-bit ARM */
	uint64_t *ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, __shmid, 0);
	/* Save size at beginning of buffer, for use with munmap */
	*ptr = size;
	return ptr + 1;
}

static inline int shmdt (const void *__shmaddr)
{
	/* Find mmap size which we stored at the beginning of the buffer */
	uint64_t *ptr = (uint64_t *)__shmaddr - 1;
	size_t size = *ptr;
	return munmap(ptr, size);
}
#endif

#define SPLICE_DEF_SIZE	(64*1024)

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_value(int ioprio_class, int ioprio)
{
	/*
	 * If no class is set, assume BE
	 */
        if (!ioprio_class)
                ioprio_class = IOPRIO_CLASS_BE;

	return (ioprio_class << IOPRIO_CLASS_SHIFT) | ioprio;
}

static inline bool ioprio_value_is_class_rt(unsigned int priority)
{
	return (priority >> IOPRIO_CLASS_SHIFT) == IOPRIO_CLASS_RT;
}

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

#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;
}

#ifdef O_NOATIME
#define FIO_O_NOATIME	O_NOATIME
#else
#define FIO_O_NOATIME	0
#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);
}

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 RWF_UNCACHED
#define RWF_UNCACHED	0x00000040
#endif

#endif
Commit	Line	Data
ec5c6b12 AC	1	#ifndef FIO_OS_ANDROID_H
	2	#define FIO_OS_ANDROID_H
	3
	4	#define FIO_OS os_android
	5
	6	#include <sys/ioctl.h>
93eeb558	7	#include <sys/mman.h>
ec5c6b12 AC	8	#include <sys/uio.h>
ec5c6b12 AC	9	#include <sys/syscall.h>
036a1599	10	#include <sys/sysmacros.h>
ec5c6b12 AC	11	#include <sys/vfs.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/major.h>
da52c582	18	#include <asm/byteorder.h>
ec5c6b12	19
eec97b93	20	#include "./os-linux-syscall.h"
ec5c6b12 AC	21	#include "../file.h"
ec5c6b12 AC	22
0fa5c986 OM	23	#ifndef __has_builtin // Optional of course.
	24	#define __has_builtin(x) 0 // Compatibility with non-clang compilers.
	25	#endif
	26
5446b11a	27	#define FIO_HAVE_CPU_AFFINITY
ec5c6b12	28	#define FIO_HAVE_DISK_UTIL
ec5c6b12	29	#define FIO_HAVE_IOSCHED_SWITCH
177380ab	30	#define FIO_HAVE_IOPRIO
32ef447a	31	#define FIO_HAVE_IOPRIO_CLASS
ec5c6b12 AC	32	#define FIO_HAVE_ODIRECT
	33	#define FIO_HAVE_HUGETLB
	34	#define FIO_HAVE_BLKTRACE
ec5c6b12	35	#define FIO_HAVE_CL_SIZE
3714a963	36	#define FIO_HAVE_CGROUPS
ec5c6b12 AC	37	#define FIO_HAVE_FS_STAT
ec5c6b12 AC	38	#define FIO_HAVE_TRIM
ec5c6b12 AC	39	#define FIO_HAVE_GETTID
	40	#define FIO_USE_GENERIC_INIT_RANDOM_STATE
	41	#define FIO_HAVE_E4_ENG
	42	#define FIO_HAVE_BYTEORDER_FUNCS
6d0e9f83	43	#define FIO_HAVE_MMAP_HUGE
a5e0ee11	44	#define FIO_NO_HAVE_SHM_H
ec5c6b12 AC	45
	46	#define OS_MAP_ANON MAP_ANONYMOUS
	47
5446b11a BVA	48	typedef cpu_set_t os_cpu_mask_t;
	49
	50	#define fio_setaffinity(pid, cpumask) \
	51	sched_setaffinity((pid), sizeof(cpumask), &(cpumask))
	52	#define fio_getaffinity(pid, ptr) \
	53	sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
	54
93eeb558	55	#ifndef POSIX_MADV_DONTNEED
ec5c6b12 AC	56	#define posix_madvise madvise
	57	#define POSIX_MADV_DONTNEED MADV_DONTNEED
	58	#define POSIX_MADV_SEQUENTIAL MADV_SEQUENTIAL
	59	#define POSIX_MADV_RANDOM MADV_RANDOM
93eeb558	60	#endif
93eeb558	61
ec5c6b12 AC	62	#ifdef MADV_REMOVE
	63	#define FIO_MADV_FREE MADV_REMOVE
	64	#endif
a5e0ee11 O	65	#ifndef MAP_HUGETLB
	66	#define MAP_HUGETLB 0x40000 /* arch specific */
	67	#endif
ec5c6b12	68
e9d2a04d TK	69	#ifdef CONFIG_PTHREAD_GETAFFINITY
	70	#define FIO_HAVE_GET_THREAD_AFFINITY
	71	#define fio_get_thread_affinity(mask) \
	72	pthread_getaffinity_np(pthread_self(), sizeof(mask), &(mask))
	73	#endif
	74
5446b11a BVA	75	#define fio_cpu_clear(mask, cpu) CPU_CLR((cpu), (mask))
	76	#define fio_cpu_set(mask, cpu) CPU_SET((cpu), (mask))
	77	#define fio_cpu_isset(mask, cpu) (CPU_ISSET((cpu), (mask)) != 0)
	78	#define fio_cpu_count(mask) CPU_COUNT((mask))
	79
	80	static inline int fio_cpuset_init(os_cpu_mask_t *mask)
	81	{
	82	CPU_ZERO(mask);
	83	return 0;
	84	}
	85
	86	static inline int fio_cpuset_exit(os_cpu_mask_t *mask)
	87	{
	88	return 0;
	89	}
	90
	91	#define FIO_MAX_CPUS CPU_SETSIZE
	92
6ca9b06d	93	#ifndef CONFIG_NO_SHM
ec5c6b12	94	/*
fc002f14	95	* Bionic doesn't support SysV shared memory, so implement it using ashmem
ec5c6b12	96	*/
239a11de AJ	97	#include <stdio.h>
239a11de AJ	98	#include <linux/ashmem.h>
68bf62a0	99	#include <linux/shm.h>
d7e3adb6 D	100	#include <android/api-level.h>
	101	#if __ANDROID_API__ >= __ANDROID_API_O__
	102	#include <android/sharedmem.h>
	103	#else
	104	#define ASHMEM_DEVICE "/dev/ashmem"
	105	#endif
68bf62a0 OM	106	#define shmid_ds shmid64_ds
68bf62a0 OM	107	#define SHM_HUGETLB 04000
239a11de	108
68bf62a0	109	static inline int shmctl(int __shmid, int __cmd, struct shmid_ds *__buf)
ec5c6b12	110	{
239a11de AJ	111	int ret=0;
	112	if (__cmd == IPC_RMID)
	113	{
	114	int length = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
	115	struct ashmem_pin pin = {0 , length};
	116	ret = ioctl(__shmid, ASHMEM_UNPIN, &pin);
	117	close(__shmid);
	118	}
	119	return ret;
ec5c6b12 AC	120	}
ec5c6b12 AC	121
d7e3adb6 D	122	#if __ANDROID_API__ >= __ANDROID_API_O__
	123	static inline int shmget(key_t __key, size_t __size, int __shmflg)
	124	{
	125	char keybuf[11];
	126
	127	sprintf(keybuf, "%d", __key);
	128
	129	return ASharedMemory_create(keybuf, __size + sizeof(uint64_t));
	130	}
	131	#else
68bf62a0	132	static inline int shmget(key_t __key, size_t __size, int __shmflg)
ec5c6b12	133	{
239a11de	134	int fd,ret;
91f64346 OM	135	char keybuf[11];
91f64346 OM	136
239a11de AJ	137	fd = open(ASHMEM_DEVICE, O_RDWR);
	138	if (fd < 0)
	139	return fd;
	140
91f64346 OM	141	sprintf(keybuf,"%d",__key);
91f64346 OM	142	ret = ioctl(fd, ASHMEM_SET_NAME, keybuf);
239a11de AJ	143	if (ret < 0)
	144	goto error;
	145
d8767475 OM	146	/* Stores size in first 8 bytes, allocate extra space */
d8767475 OM	147	ret = ioctl(fd, ASHMEM_SET_SIZE, __size + sizeof(uint64_t));
239a11de AJ	148	if (ret < 0)
	149	goto error;
	150
	151	return fd;
91f64346	152
239a11de AJ	153	error:
	154	close(fd);
	155	return ret;
ec5c6b12	156	}
d7e3adb6	157	#endif
ec5c6b12	158
68bf62a0	159	static inline void shmat(int __shmid, const void __shmaddr, int __shmflg)
ec5c6b12	160	{
d8767475 OM	161	size_t size = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
	162	/* Needs to be 8-byte aligned to prevent SIGBUS on 32-bit ARM */
	163	uint64_t *ptr = mmap(NULL, size, PROT_READ \| PROT_WRITE, MAP_SHARED, __shmid, 0);
	164	/* Save size at beginning of buffer, for use with munmap */
	165	*ptr = size;
	166	return ptr + 1;
ec5c6b12 AC	167	}
	168
	169	static inline int shmdt (const void *__shmaddr)
	170	{
d8767475 OM	171	/* Find mmap size which we stored at the beginning of the buffer */
	172	uint64_t ptr = (uint64_t )__shmaddr - 1;
	173	size_t size = *ptr;
	174	return munmap(ptr, size);
ec5c6b12	175	}
6ca9b06d	176	#endif
ec5c6b12	177
ec5c6b12 AC	178	#define SPLICE_DEF_SIZE (64*1024)
ec5c6b12 AC	179
177380ab AC	180	enum {
	181	IOPRIO_CLASS_NONE,
	182	IOPRIO_CLASS_RT,
	183	IOPRIO_CLASS_BE,
	184	IOPRIO_CLASS_IDLE,
	185	};
	186
	187	enum {
	188	IOPRIO_WHO_PROCESS = 1,
	189	IOPRIO_WHO_PGRP,
	190	IOPRIO_WHO_USER,
	191	};
	192
	193	#define IOPRIO_BITS 16
	194	#define IOPRIO_CLASS_SHIFT 13
	195
1767bd34 TK	196	#define IOPRIO_MIN_PRIO 0 /* highest priority */
	197	#define IOPRIO_MAX_PRIO 7 /* lowest priority */
	198
	199	#define IOPRIO_MIN_PRIO_CLASS 0
	200	#define IOPRIO_MAX_PRIO_CLASS 3
	201
8d6e8d99	202	static inline int ioprio_value(int ioprio_class, int ioprio)
a415b2cc AC	203	{
	204	/*
	205	* If no class is set, assume BE
	206	*/
8d6e8d99 DLM	207	if (!ioprio_class)
	208	ioprio_class = IOPRIO_CLASS_BE;
	209
	210	return (ioprio_class << IOPRIO_CLASS_SHIFT) \| ioprio;
	211	}
a415b2cc	212
03ec570f DLM	213	static inline bool ioprio_value_is_class_rt(unsigned int priority)
	214	{
	215	return (priority >> IOPRIO_CLASS_SHIFT) == IOPRIO_CLASS_RT;
	216	}
	217
8d6e8d99 DLM	218	static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
	219	{
	220	return syscall(__NR_ioprio_set, which, who,
	221	ioprio_value(ioprio_class, ioprio));
a415b2cc AC	222	}
a415b2cc AC	223
ec5c6b12 AC	224	#ifndef BLKGETSIZE64
	225	#define BLKGETSIZE64 _IOR(0x12,114,size_t)
	226	#endif
	227
	228	#ifndef BLKFLSBUF
	229	#define BLKFLSBUF _IO(0x12,97)
	230	#endif
	231
	232	#ifndef BLKDISCARD
	233	#define BLKDISCARD _IO(0x12,119)
	234	#endif
	235
	236	static inline int blockdev_invalidate_cache(struct fio_file *f)
	237	{
	238	return ioctl(f->fd, BLKFLSBUF);
	239	}
	240
	241	static inline int blockdev_size(struct fio_file f, unsigned long long bytes)
	242	{
	243	if (!ioctl(f->fd, BLKGETSIZE64, bytes))
	244	return 0;
	245
	246	return errno;
	247	}
	248
	249	static inline unsigned long long os_phys_mem(void)
	250	{
	251	long pagesize, pages;
	252
	253	pagesize = sysconf(_SC_PAGESIZE);
	254	pages = sysconf(_SC_PHYS_PAGES);
	255	if (pages == -1 \|\| pagesize == -1)
	256	return 0;
	257
	258	return (unsigned long long) pages * (unsigned long long) pagesize;
	259	}
	260
ec5c6b12 AC	261	#ifdef O_NOATIME
	262	#define FIO_O_NOATIME O_NOATIME
	263	#else
	264	#define FIO_O_NOATIME 0
	265	#endif
	266
0fa5c986 OM	267	/* Check for GCC or Clang byte swap intrinsics */
	268	#if (__has_builtin(__builtin_bswap16) && __has_builtin(__builtin_bswap32) \
	269	&& __has_builtin(__builtin_bswap64)) \|\| (__GNUC__ > 4 \
	270	\|\| (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)) /* fio_swapN */
	271	#define fio_swap16(x) __builtin_bswap16(x)
	272	#define fio_swap32(x) __builtin_bswap32(x)
	273	#define fio_swap64(x) __builtin_bswap64(x)
	274	#else
	275	#include <byteswap.h>
	276	#define fio_swap16(x) bswap_16(x)
	277	#define fio_swap32(x) bswap_32(x)
	278	#define fio_swap64(x) bswap_64(x)
	279	#endif /* fio_swapN */
ec5c6b12 AC	280
	281	#define CACHE_LINE_FILE \
	282	"/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
	283
	284	static inline int arch_cache_line_size(void)
	285	{
	286	char size[32];
	287	int fd, ret;
	288
	289	fd = open(CACHE_LINE_FILE, O_RDONLY);
	290	if (fd < 0)
	291	return -1;
	292
	293	ret = read(fd, size, sizeof(size));
	294
	295	close(fd);
	296
	297	if (ret <= 0)
	298	return -1;
	299	else
	300	return atoi(size);
	301	}
	302
c08ad04c	303	static inline unsigned long long get_fs_free_size(const char *path)
ec5c6b12 AC	304	{
	305	unsigned long long ret;
	306	struct statfs s;
	307
	308	if (statfs(path, &s) < 0)
	309	return -1ULL;
	310
	311	ret = s.f_bsize;
	312	ret *= (unsigned long long) s.f_bfree;
	313	return ret;
	314	}
	315
496b1f9e	316	static inline int os_trim(struct fio_file *f, unsigned long long start,
ec5c6b12 AC	317	unsigned long long len)
	318	{
	319	uint64_t range[2];
	320
	321	range[0] = start;
	322	range[1] = len;
	323
496b1f9e	324	if (!ioctl(f->fd, BLKDISCARD, range))
ec5c6b12 AC	325	return 0;
	326
	327	return errno;
	328	}
	329
93eeb558	330	#ifdef CONFIG_SCHED_IDLE
	331	static inline int fio_set_sched_idle(void)
	332	{
	333	struct sched_param p = { .sched_priority = 0, };
	334	return sched_setscheduler(gettid(), SCHED_IDLE, &p);
	335	}
	336	#endif
	337
d2257a27 BVA	338	#ifndef RWF_UNCACHED
	339	#define RWF_UNCACHED 0x00000040
	340	#endif
	341
ec5c6b12	342	#endif