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"
24 #ifndef __has_builtin // Optional of course.
25 #define __has_builtin(x) 0 // Compatibility with non-clang compilers.
28 #define FIO_HAVE_DISK_UTIL
29 #define FIO_HAVE_IOSCHED_SWITCH
30 #define FIO_HAVE_IOPRIO
31 #define FIO_HAVE_IOPRIO_CLASS
32 #define FIO_HAVE_ODIRECT
33 #define FIO_HAVE_HUGETLB
34 #define FIO_HAVE_BLKTRACE
35 #define FIO_HAVE_CL_SIZE
36 #define FIO_HAVE_CGROUPS
37 #define FIO_HAVE_FS_STAT
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
43 #define FIO_HAVE_MMAP_HUGE
44 #define FIO_NO_HAVE_SHM_H
46 #define OS_MAP_ANON MAP_ANONYMOUS
48 #ifndef POSIX_MADV_DONTNEED
49 #define posix_madvise madvise
50 #define POSIX_MADV_DONTNEED MADV_DONTNEED
51 #define POSIX_MADV_SEQUENTIAL MADV_SEQUENTIAL
52 #define POSIX_MADV_RANDOM MADV_RANDOM
56 #define FIO_MADV_FREE MADV_REMOVE
59 #define MAP_HUGETLB 0x40000 /* arch specific */
64 * Bionic doesn't support SysV shared memeory, so implement it using ashmem
67 #include <linux/ashmem.h>
68 #include <linux/shm.h>
69 #define shmid_ds shmid64_ds
70 #define SHM_HUGETLB 04000
72 #define ASHMEM_DEVICE "/dev/ashmem"
74 static inline int shmctl(int __shmid, int __cmd, struct shmid_ds *__buf)
77 if (__cmd == IPC_RMID)
79 int length = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
80 struct ashmem_pin pin = {0 , length};
81 ret = ioctl(__shmid, ASHMEM_UNPIN, &pin);
87 static inline int shmget(key_t __key, size_t __size, int __shmflg)
92 fd = open(ASHMEM_DEVICE, O_RDWR);
96 sprintf(keybuf,"%d",__key);
97 ret = ioctl(fd, ASHMEM_SET_NAME, keybuf);
101 /* Stores size in first 8 bytes, allocate extra space */
102 ret = ioctl(fd, ASHMEM_SET_SIZE, __size + sizeof(uint64_t));
113 static inline void *shmat(int __shmid, const void *__shmaddr, int __shmflg)
115 size_t size = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
116 /* Needs to be 8-byte aligned to prevent SIGBUS on 32-bit ARM */
117 uint64_t *ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, __shmid, 0);
118 /* Save size at beginning of buffer, for use with munmap */
123 static inline int shmdt (const void *__shmaddr)
125 /* Find mmap size which we stored at the beginning of the buffer */
126 uint64_t *ptr = (uint64_t *)__shmaddr - 1;
128 return munmap(ptr, size);
132 #define SPLICE_DEF_SIZE (64*1024)
142 IOPRIO_WHO_PROCESS = 1,
147 #define IOPRIO_BITS 16
148 #define IOPRIO_CLASS_SHIFT 13
150 #define IOPRIO_MIN_PRIO 0 /* highest priority */
151 #define IOPRIO_MAX_PRIO 7 /* lowest priority */
153 #define IOPRIO_MIN_PRIO_CLASS 0
154 #define IOPRIO_MAX_PRIO_CLASS 3
156 static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
159 * If no class is set, assume BE
162 ioprio_class = IOPRIO_CLASS_BE;
164 ioprio |= ioprio_class << IOPRIO_CLASS_SHIFT;
165 return syscall(__NR_ioprio_set, which, who, ioprio);
169 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
173 #define BLKFLSBUF _IO(0x12,97)
177 #define BLKDISCARD _IO(0x12,119)
180 static inline int blockdev_invalidate_cache(struct fio_file *f)
182 return ioctl(f->fd, BLKFLSBUF);
185 static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
187 if (!ioctl(f->fd, BLKGETSIZE64, bytes))
193 static inline unsigned long long os_phys_mem(void)
195 long pagesize, pages;
197 pagesize = sysconf(_SC_PAGESIZE);
198 pages = sysconf(_SC_PHYS_PAGES);
199 if (pages == -1 || pagesize == -1)
202 return (unsigned long long) pages * (unsigned long long) pagesize;
205 typedef struct { unsigned short r[3]; } os_random_state_t;
207 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
209 rs->r[0] = seed & 0xffff;
211 rs->r[1] = seed & 0xffff;
213 rs->r[2] = seed & 0xffff;
217 static inline long os_random_long(os_random_state_t *rs)
219 return nrand48(rs->r);
223 #define FIO_O_NOATIME O_NOATIME
225 #define FIO_O_NOATIME 0
228 /* Check for GCC or Clang byte swap intrinsics */
229 #if (__has_builtin(__builtin_bswap16) && __has_builtin(__builtin_bswap32) \
230 && __has_builtin(__builtin_bswap64)) || (__GNUC__ > 4 \
231 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)) /* fio_swapN */
232 #define fio_swap16(x) __builtin_bswap16(x)
233 #define fio_swap32(x) __builtin_bswap32(x)
234 #define fio_swap64(x) __builtin_bswap64(x)
236 #include <byteswap.h>
237 #define fio_swap16(x) bswap_16(x)
238 #define fio_swap32(x) bswap_32(x)
239 #define fio_swap64(x) bswap_64(x)
240 #endif /* fio_swapN */
242 #define CACHE_LINE_FILE \
243 "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
245 static inline int arch_cache_line_size(void)
250 fd = open(CACHE_LINE_FILE, O_RDONLY);
254 ret = read(fd, size, sizeof(size));
264 static inline unsigned long long get_fs_free_size(const char *path)
266 unsigned long long ret;
269 if (statfs(path, &s) < 0)
273 ret *= (unsigned long long) s.f_bfree;
277 static inline int os_trim(int fd, unsigned long long start,
278 unsigned long long len)
285 if (!ioctl(fd, BLKDISCARD, range))
291 #ifdef CONFIG_SCHED_IDLE
292 static inline int fio_set_sched_idle(void)
294 struct sched_param p = { .sched_priority = 0, };
295 return sched_setscheduler(gettid(), SCHED_IDLE, &p);