1 #ifndef FIO_OS_ANDROID_H
2 #define FIO_OS_ANDROID_H
4 #define FIO_OS os_android
9 #include <sys/syscall.h>
15 #include <linux/unistd.h>
16 #include <linux/major.h>
17 #include <asm/byteorder.h>
19 #include "./os-linux-syscall.h"
23 #define FIO_HAVE_DISK_UTIL
24 #define FIO_HAVE_IOSCHED_SWITCH
25 #define FIO_HAVE_IOPRIO
26 #define FIO_HAVE_IOPRIO_CLASS
27 #define FIO_HAVE_ODIRECT
28 #define FIO_HAVE_HUGETLB
29 #define FIO_HAVE_BLKTRACE
30 #define FIO_HAVE_PSHARED_MUTEX
31 #define FIO_HAVE_CL_SIZE
32 #define FIO_HAVE_FS_STAT
34 #define FIO_HAVE_GETTID
35 #define FIO_USE_GENERIC_INIT_RANDOM_STATE
36 #define FIO_HAVE_E4_ENG
37 #define FIO_HAVE_BYTEORDER_FUNCS
38 #define FIO_HAVE_MMAP_HUGE
39 #define FIO_NO_HAVE_SHM_H
41 #define OS_MAP_ANON MAP_ANONYMOUS
43 #ifndef POSIX_MADV_DONTNEED
44 #define posix_madvise madvise
45 #define POSIX_MADV_DONTNEED MADV_DONTNEED
46 #define POSIX_MADV_SEQUENTIAL MADV_SEQUENTIAL
47 #define POSIX_MADV_RANDOM MADV_RANDOM
51 #define FIO_MADV_FREE MADV_REMOVE
54 #define MAP_HUGETLB 0x40000 /* arch specific */
59 * The Android NDK doesn't currently export <sys/shm.h>, so define the
60 * necessary stuff here.
63 #include <linux/shm.h>
64 #define SHM_HUGETLB 04000
67 #include <linux/ashmem.h>
70 #define ASHMEM_DEVICE "/dev/ashmem"
72 static inline int shmctl (int __shmid, int __cmd, struct shmid_ds *__buf)
75 if (__cmd == IPC_RMID)
77 int length = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
78 struct ashmem_pin pin = {0 , length};
79 ret = ioctl(__shmid, ASHMEM_UNPIN, &pin);
85 static inline int shmget (key_t __key, size_t __size, int __shmflg)
90 fd = open(ASHMEM_DEVICE, O_RDWR);
94 sprintf(key,"%d",__key);
95 ret = ioctl(fd, ASHMEM_SET_NAME, key);
99 ret = ioctl(fd, ASHMEM_SET_SIZE, __size);
110 static inline void *shmat (int __shmid, const void *__shmaddr, int __shmflg)
112 size_t *ptr, size = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
113 ptr = mmap(NULL, size + sizeof(size_t), PROT_READ | PROT_WRITE, MAP_SHARED, __shmid, 0);
114 *ptr = size; //save size at beginning of buffer, for use with munmap
118 static inline int shmdt (const void *__shmaddr)
121 ptr = (size_t *)__shmaddr;
123 size = *ptr; //find mmap size which we stored at the beginning of the buffer
124 return munmap((void *)ptr, size + sizeof(size_t));
127 #define SPLICE_DEF_SIZE (64*1024)
137 IOPRIO_WHO_PROCESS = 1,
142 #define IOPRIO_BITS 16
143 #define IOPRIO_CLASS_SHIFT 13
145 #define IOPRIO_MIN_PRIO 0 /* highest priority */
146 #define IOPRIO_MAX_PRIO 7 /* lowest priority */
148 #define IOPRIO_MIN_PRIO_CLASS 0
149 #define IOPRIO_MAX_PRIO_CLASS 3
151 static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
154 * If no class is set, assume BE
157 ioprio_class = IOPRIO_CLASS_BE;
159 ioprio |= ioprio_class << IOPRIO_CLASS_SHIFT;
160 return syscall(__NR_ioprio_set, which, who, ioprio);
164 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
168 #define BLKFLSBUF _IO(0x12,97)
172 #define BLKDISCARD _IO(0x12,119)
175 static inline int blockdev_invalidate_cache(struct fio_file *f)
177 return ioctl(f->fd, BLKFLSBUF);
180 static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
182 if (!ioctl(f->fd, BLKGETSIZE64, bytes))
188 static inline unsigned long long os_phys_mem(void)
190 long pagesize, pages;
192 pagesize = sysconf(_SC_PAGESIZE);
193 pages = sysconf(_SC_PHYS_PAGES);
194 if (pages == -1 || pagesize == -1)
197 return (unsigned long long) pages * (unsigned long long) pagesize;
200 typedef struct { unsigned short r[3]; } os_random_state_t;
202 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
204 rs->r[0] = seed & 0xffff;
206 rs->r[1] = seed & 0xffff;
208 rs->r[2] = seed & 0xffff;
212 static inline long os_random_long(os_random_state_t *rs)
214 return nrand48(rs->r);
218 #define FIO_O_NOATIME O_NOATIME
220 #define FIO_O_NOATIME 0
223 #define fio_swap16(x) __bswap_16(x)
224 #define fio_swap32(x) __bswap_32(x)
225 #define fio_swap64(x) __bswap_64(x)
227 #define CACHE_LINE_FILE \
228 "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
230 static inline int arch_cache_line_size(void)
235 fd = open(CACHE_LINE_FILE, O_RDONLY);
239 ret = read(fd, size, sizeof(size));
249 static inline unsigned long long get_fs_free_size(const char *path)
251 unsigned long long ret;
254 if (statfs(path, &s) < 0)
258 ret *= (unsigned long long) s.f_bfree;
262 static inline int os_trim(int fd, unsigned long long start,
263 unsigned long long len)
270 if (!ioctl(fd, BLKDISCARD, range))
276 #ifdef CONFIG_SCHED_IDLE
277 static inline int fio_set_sched_idle(void)
279 struct sched_param p = { .sched_priority = 0, };
280 return sched_setscheduler(gettid(), SCHED_IDLE, &p);