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_CL_SIZE
31 #define FIO_HAVE_FS_STAT
33 #define FIO_HAVE_GETTID
34 #define FIO_USE_GENERIC_INIT_RANDOM_STATE
35 #define FIO_HAVE_E4_ENG
36 #define FIO_HAVE_BYTEORDER_FUNCS
37 #define FIO_HAVE_MMAP_HUGE
38 #define FIO_NO_HAVE_SHM_H
40 #define OS_MAP_ANON MAP_ANONYMOUS
42 #ifndef POSIX_MADV_DONTNEED
43 #define posix_madvise madvise
44 #define POSIX_MADV_DONTNEED MADV_DONTNEED
45 #define POSIX_MADV_SEQUENTIAL MADV_SEQUENTIAL
46 #define POSIX_MADV_RANDOM MADV_RANDOM
50 #define FIO_MADV_FREE MADV_REMOVE
53 #define MAP_HUGETLB 0x40000 /* arch specific */
58 * The Android NDK doesn't currently export <sys/shm.h>, so define the
59 * necessary stuff here.
62 #include <linux/shm.h>
63 #define SHM_HUGETLB 04000
66 #include <linux/ashmem.h>
69 #define ASHMEM_DEVICE "/dev/ashmem"
71 static inline int shmctl (int __shmid, int __cmd, struct shmid_ds *__buf)
74 if (__cmd == IPC_RMID)
76 int length = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
77 struct ashmem_pin pin = {0 , length};
78 ret = ioctl(__shmid, ASHMEM_UNPIN, &pin);
84 static inline int shmget (key_t __key, size_t __size, int __shmflg)
89 fd = open(ASHMEM_DEVICE, O_RDWR);
93 sprintf(key,"%d",__key);
94 ret = ioctl(fd, ASHMEM_SET_NAME, key);
98 ret = ioctl(fd, ASHMEM_SET_SIZE, __size);
109 static inline void *shmat (int __shmid, const void *__shmaddr, int __shmflg)
111 size_t *ptr, size = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
112 ptr = mmap(NULL, size + sizeof(size_t), PROT_READ | PROT_WRITE, MAP_SHARED, __shmid, 0);
113 *ptr = size; //save size at beginning of buffer, for use with munmap
117 static inline int shmdt (const void *__shmaddr)
120 ptr = (size_t *)__shmaddr;
122 size = *ptr; //find mmap size which we stored at the beginning of the buffer
123 return munmap((void *)ptr, size + sizeof(size_t));
126 #define SPLICE_DEF_SIZE (64*1024)
136 IOPRIO_WHO_PROCESS = 1,
141 #define IOPRIO_BITS 16
142 #define IOPRIO_CLASS_SHIFT 13
144 #define IOPRIO_MIN_PRIO 0 /* highest priority */
145 #define IOPRIO_MAX_PRIO 7 /* lowest priority */
147 #define IOPRIO_MIN_PRIO_CLASS 0
148 #define IOPRIO_MAX_PRIO_CLASS 3
150 static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
153 * If no class is set, assume BE
156 ioprio_class = IOPRIO_CLASS_BE;
158 ioprio |= ioprio_class << IOPRIO_CLASS_SHIFT;
159 return syscall(__NR_ioprio_set, which, who, ioprio);
163 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
167 #define BLKFLSBUF _IO(0x12,97)
171 #define BLKDISCARD _IO(0x12,119)
174 static inline int blockdev_invalidate_cache(struct fio_file *f)
176 return ioctl(f->fd, BLKFLSBUF);
179 static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
181 if (!ioctl(f->fd, BLKGETSIZE64, bytes))
187 static inline unsigned long long os_phys_mem(void)
189 long pagesize, pages;
191 pagesize = sysconf(_SC_PAGESIZE);
192 pages = sysconf(_SC_PHYS_PAGES);
193 if (pages == -1 || pagesize == -1)
196 return (unsigned long long) pages * (unsigned long long) pagesize;
199 typedef struct { unsigned short r[3]; } os_random_state_t;
201 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
203 rs->r[0] = seed & 0xffff;
205 rs->r[1] = seed & 0xffff;
207 rs->r[2] = seed & 0xffff;
211 static inline long os_random_long(os_random_state_t *rs)
213 return nrand48(rs->r);
217 #define FIO_O_NOATIME O_NOATIME
219 #define FIO_O_NOATIME 0
222 #define fio_swap16(x) __bswap_16(x)
223 #define fio_swap32(x) __bswap_32(x)
224 #define fio_swap64(x) __bswap_64(x)
226 #define CACHE_LINE_FILE \
227 "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
229 static inline int arch_cache_line_size(void)
234 fd = open(CACHE_LINE_FILE, O_RDONLY);
238 ret = read(fd, size, sizeof(size));
248 static inline unsigned long long get_fs_free_size(const char *path)
250 unsigned long long ret;
253 if (statfs(path, &s) < 0)
257 ret *= (unsigned long long) s.f_bfree;
261 static inline int os_trim(int fd, unsigned long long start,
262 unsigned long long len)
269 if (!ioctl(fd, BLKDISCARD, range))
275 #ifdef CONFIG_SCHED_IDLE
276 static inline int fio_set_sched_idle(void)
278 struct sched_param p = { .sched_priority = 0, };
279 return sched_setscheduler(gettid(), SCHED_IDLE, &p);