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>
22 #define FIO_HAVE_DISK_UTIL
23 #define FIO_HAVE_IOSCHED_SWITCH
24 #define FIO_HAVE_IOPRIO
25 #define FIO_HAVE_ODIRECT
26 #define FIO_HAVE_HUGETLB
27 #define FIO_HAVE_BLKTRACE
28 #define FIO_HAVE_PSHARED_MUTEX
29 #define FIO_HAVE_CL_SIZE
30 #define FIO_HAVE_FS_STAT
32 #define FIO_HAVE_GETTID
33 #define FIO_USE_GENERIC_INIT_RANDOM_STATE
34 #define FIO_HAVE_E4_ENG
35 #define FIO_HAVE_BYTEORDER_FUNCS
36 #define FIO_HAVE_MMAP_HUGE
37 #define FIO_NO_HAVE_SHM_H
39 #define OS_MAP_ANON MAP_ANONYMOUS
41 #ifndef POSIX_MADV_DONTNEED
42 #define posix_madvise madvise
43 #define POSIX_MADV_DONTNEED MADV_DONTNEED
44 #define POSIX_MADV_SEQUENTIAL MADV_SEQUENTIAL
45 #define POSIX_MADV_RANDOM MADV_RANDOM
49 #define FIO_MADV_FREE MADV_REMOVE
52 #define MAP_HUGETLB 0x40000 /* arch specific */
57 * The Android NDK doesn't currently export <sys/shm.h>, so define the
58 * necessary stuff here.
61 #include <linux/shm.h>
62 #define SHM_HUGETLB 04000
65 #include <linux/ashmem.h>
68 #define ASHMEM_DEVICE "/dev/ashmem"
70 static inline int shmctl (int __shmid, int __cmd, struct shmid_ds *__buf)
73 if (__cmd == IPC_RMID)
75 int length = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
76 struct ashmem_pin pin = {0 , length};
77 ret = ioctl(__shmid, ASHMEM_UNPIN, &pin);
83 static inline int shmget (key_t __key, size_t __size, int __shmflg)
88 fd = open(ASHMEM_DEVICE, O_RDWR);
92 sprintf(key,"%d",__key);
93 ret = ioctl(fd, ASHMEM_SET_NAME, key);
97 ret = ioctl(fd, ASHMEM_SET_SIZE, __size);
108 static inline void *shmat (int __shmid, const void *__shmaddr, int __shmflg)
110 size_t *ptr, size = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
111 ptr = mmap(NULL, size + sizeof(size_t), PROT_READ | PROT_WRITE, MAP_SHARED, __shmid, 0);
112 *ptr = size; //save size at beginning of buffer, for use with munmap
116 static inline int shmdt (const void *__shmaddr)
119 ptr = (size_t *)__shmaddr;
121 size = *ptr; //find mmap size which we stored at the beginning of the buffer
122 return munmap((void *)ptr, size + sizeof(size_t));
125 #define SPLICE_DEF_SIZE (64*1024)
135 IOPRIO_WHO_PROCESS = 1,
140 #define IOPRIO_BITS 16
141 #define IOPRIO_CLASS_SHIFT 13
143 static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
146 * If no class is set, assume BE
149 ioprio_class = IOPRIO_CLASS_BE;
151 ioprio |= ioprio_class << IOPRIO_CLASS_SHIFT;
152 return syscall(__NR_ioprio_set, which, who, ioprio);
156 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
160 #define BLKFLSBUF _IO(0x12,97)
164 #define BLKDISCARD _IO(0x12,119)
167 static inline int blockdev_invalidate_cache(struct fio_file *f)
169 return ioctl(f->fd, BLKFLSBUF);
172 static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
174 if (!ioctl(f->fd, BLKGETSIZE64, bytes))
180 static inline unsigned long long os_phys_mem(void)
182 long pagesize, pages;
184 pagesize = sysconf(_SC_PAGESIZE);
185 pages = sysconf(_SC_PHYS_PAGES);
186 if (pages == -1 || pagesize == -1)
189 return (unsigned long long) pages * (unsigned long long) pagesize;
192 typedef struct { unsigned short r[3]; } os_random_state_t;
194 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
196 rs->r[0] = seed & 0xffff;
198 rs->r[1] = seed & 0xffff;
200 rs->r[2] = seed & 0xffff;
204 static inline long os_random_long(os_random_state_t *rs)
206 return nrand48(rs->r);
210 #define FIO_O_NOATIME O_NOATIME
212 #define FIO_O_NOATIME 0
215 #define fio_swap16(x) __bswap_16(x)
216 #define fio_swap32(x) __bswap_32(x)
217 #define fio_swap64(x) __bswap_64(x)
219 #define CACHE_LINE_FILE \
220 "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
222 static inline int arch_cache_line_size(void)
227 fd = open(CACHE_LINE_FILE, O_RDONLY);
231 ret = read(fd, size, sizeof(size));
241 static inline unsigned long long get_fs_free_size(const char *path)
243 unsigned long long ret;
246 if (statfs(path, &s) < 0)
250 ret *= (unsigned long long) s.f_bfree;
254 static inline int os_trim(int fd, unsigned long long start,
255 unsigned long long len)
262 if (!ioctl(fd, BLKDISCARD, range))
268 #ifdef CONFIG_SCHED_IDLE
269 static inline int fio_set_sched_idle(void)
271 struct sched_param p = { .sched_priority = 0, };
272 return sched_setscheduler(gettid(), SCHED_IDLE, &p);