1 #ifndef FIO_OS_ANDROID_H
2 #define FIO_OS_ANDROID_H
4 #define FIO_OS os_android
9 #include <sys/syscall.h>
10 #include <sys/sysmacros.h>
16 #include <linux/unistd.h>
17 #include <linux/major.h>
18 #include <asm/byteorder.h>
20 #include "./os-linux-syscall.h"
23 #ifndef __has_builtin // Optional of course.
24 #define __has_builtin(x) 0 // Compatibility with non-clang compilers.
27 #define FIO_HAVE_DISK_UTIL
28 #define FIO_HAVE_IOSCHED_SWITCH
29 #define FIO_HAVE_IOPRIO
30 #define FIO_HAVE_IOPRIO_CLASS
31 #define FIO_HAVE_ODIRECT
32 #define FIO_HAVE_HUGETLB
33 #define FIO_HAVE_BLKTRACE
34 #define FIO_HAVE_CL_SIZE
35 #define FIO_HAVE_CGROUPS
36 #define FIO_HAVE_FS_STAT
38 #define FIO_HAVE_GETTID
39 #define FIO_USE_GENERIC_INIT_RANDOM_STATE
40 #define FIO_HAVE_E4_ENG
41 #define FIO_HAVE_BYTEORDER_FUNCS
42 #define FIO_HAVE_MMAP_HUGE
43 #define FIO_NO_HAVE_SHM_H
45 #define OS_MAP_ANON MAP_ANONYMOUS
47 #ifndef POSIX_MADV_DONTNEED
48 #define posix_madvise madvise
49 #define POSIX_MADV_DONTNEED MADV_DONTNEED
50 #define POSIX_MADV_SEQUENTIAL MADV_SEQUENTIAL
51 #define POSIX_MADV_RANDOM MADV_RANDOM
55 #define FIO_MADV_FREE MADV_REMOVE
58 #define MAP_HUGETLB 0x40000 /* arch specific */
63 * Bionic doesn't support SysV shared memeory, so implement it using ashmem
66 #include <linux/ashmem.h>
67 #include <linux/shm.h>
68 #define shmid_ds shmid64_ds
69 #define SHM_HUGETLB 04000
71 #define ASHMEM_DEVICE "/dev/ashmem"
73 static inline int shmctl(int __shmid, int __cmd, struct shmid_ds *__buf)
76 if (__cmd == IPC_RMID)
78 int length = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
79 struct ashmem_pin pin = {0 , length};
80 ret = ioctl(__shmid, ASHMEM_UNPIN, &pin);
86 static inline int shmget(key_t __key, size_t __size, int __shmflg)
91 fd = open(ASHMEM_DEVICE, O_RDWR);
95 sprintf(keybuf,"%d",__key);
96 ret = ioctl(fd, ASHMEM_SET_NAME, keybuf);
100 /* Stores size in first 8 bytes, allocate extra space */
101 ret = ioctl(fd, ASHMEM_SET_SIZE, __size + sizeof(uint64_t));
112 static inline void *shmat(int __shmid, const void *__shmaddr, int __shmflg)
114 size_t size = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
115 /* Needs to be 8-byte aligned to prevent SIGBUS on 32-bit ARM */
116 uint64_t *ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, __shmid, 0);
117 /* Save size at beginning of buffer, for use with munmap */
122 static inline int shmdt (const void *__shmaddr)
124 /* Find mmap size which we stored at the beginning of the buffer */
125 uint64_t *ptr = (uint64_t *)__shmaddr - 1;
127 return munmap(ptr, size);
131 #define SPLICE_DEF_SIZE (64*1024)
141 IOPRIO_WHO_PROCESS = 1,
146 #define IOPRIO_BITS 16
147 #define IOPRIO_CLASS_SHIFT 13
149 #define IOPRIO_MIN_PRIO 0 /* highest priority */
150 #define IOPRIO_MAX_PRIO 7 /* lowest priority */
152 #define IOPRIO_MIN_PRIO_CLASS 0
153 #define IOPRIO_MAX_PRIO_CLASS 3
155 static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
158 * If no class is set, assume BE
161 ioprio_class = IOPRIO_CLASS_BE;
163 ioprio |= ioprio_class << IOPRIO_CLASS_SHIFT;
164 return syscall(__NR_ioprio_set, which, who, ioprio);
168 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
172 #define BLKFLSBUF _IO(0x12,97)
176 #define BLKDISCARD _IO(0x12,119)
179 static inline int blockdev_invalidate_cache(struct fio_file *f)
181 return ioctl(f->fd, BLKFLSBUF);
184 static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
186 if (!ioctl(f->fd, BLKGETSIZE64, bytes))
192 static inline unsigned long long os_phys_mem(void)
194 long pagesize, pages;
196 pagesize = sysconf(_SC_PAGESIZE);
197 pages = sysconf(_SC_PHYS_PAGES);
198 if (pages == -1 || pagesize == -1)
201 return (unsigned long long) pages * (unsigned long long) pagesize;
204 typedef struct { unsigned short r[3]; } os_random_state_t;
206 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
208 rs->r[0] = seed & 0xffff;
210 rs->r[1] = seed & 0xffff;
212 rs->r[2] = seed & 0xffff;
216 static inline long os_random_long(os_random_state_t *rs)
218 return nrand48(rs->r);
222 #define FIO_O_NOATIME O_NOATIME
224 #define FIO_O_NOATIME 0
227 /* Check for GCC or Clang byte swap intrinsics */
228 #if (__has_builtin(__builtin_bswap16) && __has_builtin(__builtin_bswap32) \
229 && __has_builtin(__builtin_bswap64)) || (__GNUC__ > 4 \
230 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)) /* fio_swapN */
231 #define fio_swap16(x) __builtin_bswap16(x)
232 #define fio_swap32(x) __builtin_bswap32(x)
233 #define fio_swap64(x) __builtin_bswap64(x)
235 #include <byteswap.h>
236 #define fio_swap16(x) bswap_16(x)
237 #define fio_swap32(x) bswap_32(x)
238 #define fio_swap64(x) bswap_64(x)
239 #endif /* fio_swapN */
241 #define CACHE_LINE_FILE \
242 "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
244 static inline int arch_cache_line_size(void)
249 fd = open(CACHE_LINE_FILE, O_RDONLY);
253 ret = read(fd, size, sizeof(size));
263 static inline unsigned long long get_fs_free_size(const char *path)
265 unsigned long long ret;
268 if (statfs(path, &s) < 0)
272 ret *= (unsigned long long) s.f_bfree;
276 static inline int os_trim(struct fio_file *f, unsigned long long start,
277 unsigned long long len)
284 if (!ioctl(f->fd, BLKDISCARD, range))
290 #ifdef CONFIG_SCHED_IDLE
291 static inline int fio_set_sched_idle(void)
293 struct sched_param p = { .sched_priority = 0, };
294 return sched_setscheduler(gettid(), SCHED_IDLE, &p);