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 */
61 #ifdef CONFIG_PTHREAD_GETAFFINITY
62 #define FIO_HAVE_GET_THREAD_AFFINITY
63 #define fio_get_thread_affinity(mask) \
64 pthread_getaffinity_np(pthread_self(), sizeof(mask), &(mask))
69 * Bionic doesn't support SysV shared memory, so implement it using ashmem
72 #include <linux/ashmem.h>
73 #include <linux/shm.h>
74 #include <android/api-level.h>
75 #if __ANDROID_API__ >= __ANDROID_API_O__
76 #include <android/sharedmem.h>
78 #define ASHMEM_DEVICE "/dev/ashmem"
80 #define shmid_ds shmid64_ds
81 #define SHM_HUGETLB 04000
83 static inline int shmctl(int __shmid, int __cmd, struct shmid_ds *__buf)
86 if (__cmd == IPC_RMID)
88 int length = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
89 struct ashmem_pin pin = {0 , length};
90 ret = ioctl(__shmid, ASHMEM_UNPIN, &pin);
96 #if __ANDROID_API__ >= __ANDROID_API_O__
97 static inline int shmget(key_t __key, size_t __size, int __shmflg)
101 sprintf(keybuf, "%d", __key);
103 return ASharedMemory_create(keybuf, __size + sizeof(uint64_t));
106 static inline int shmget(key_t __key, size_t __size, int __shmflg)
111 fd = open(ASHMEM_DEVICE, O_RDWR);
115 sprintf(keybuf,"%d",__key);
116 ret = ioctl(fd, ASHMEM_SET_NAME, keybuf);
120 /* Stores size in first 8 bytes, allocate extra space */
121 ret = ioctl(fd, ASHMEM_SET_SIZE, __size + sizeof(uint64_t));
133 static inline void *shmat(int __shmid, const void *__shmaddr, int __shmflg)
135 size_t size = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
136 /* Needs to be 8-byte aligned to prevent SIGBUS on 32-bit ARM */
137 uint64_t *ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, __shmid, 0);
138 /* Save size at beginning of buffer, for use with munmap */
143 static inline int shmdt (const void *__shmaddr)
145 /* Find mmap size which we stored at the beginning of the buffer */
146 uint64_t *ptr = (uint64_t *)__shmaddr - 1;
148 return munmap(ptr, size);
152 #define SPLICE_DEF_SIZE (64*1024)
162 IOPRIO_WHO_PROCESS = 1,
167 #define IOPRIO_BITS 16
168 #define IOPRIO_CLASS_SHIFT 13
170 #define IOPRIO_MIN_PRIO 0 /* highest priority */
171 #define IOPRIO_MAX_PRIO 7 /* lowest priority */
173 #define IOPRIO_MIN_PRIO_CLASS 0
174 #define IOPRIO_MAX_PRIO_CLASS 3
176 static inline int ioprio_value(int ioprio_class, int ioprio)
179 * If no class is set, assume BE
182 ioprio_class = IOPRIO_CLASS_BE;
184 return (ioprio_class << IOPRIO_CLASS_SHIFT) | ioprio;
187 static inline bool ioprio_value_is_class_rt(unsigned int priority)
189 return (priority >> IOPRIO_CLASS_SHIFT) == IOPRIO_CLASS_RT;
192 static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
194 return syscall(__NR_ioprio_set, which, who,
195 ioprio_value(ioprio_class, ioprio));
199 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
203 #define BLKFLSBUF _IO(0x12,97)
207 #define BLKDISCARD _IO(0x12,119)
210 static inline int blockdev_invalidate_cache(struct fio_file *f)
212 return ioctl(f->fd, BLKFLSBUF);
215 static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
217 if (!ioctl(f->fd, BLKGETSIZE64, bytes))
223 static inline unsigned long long os_phys_mem(void)
225 long pagesize, pages;
227 pagesize = sysconf(_SC_PAGESIZE);
228 pages = sysconf(_SC_PHYS_PAGES);
229 if (pages == -1 || pagesize == -1)
232 return (unsigned long long) pages * (unsigned long long) pagesize;
236 #define FIO_O_NOATIME O_NOATIME
238 #define FIO_O_NOATIME 0
241 /* Check for GCC or Clang byte swap intrinsics */
242 #if (__has_builtin(__builtin_bswap16) && __has_builtin(__builtin_bswap32) \
243 && __has_builtin(__builtin_bswap64)) || (__GNUC__ > 4 \
244 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)) /* fio_swapN */
245 #define fio_swap16(x) __builtin_bswap16(x)
246 #define fio_swap32(x) __builtin_bswap32(x)
247 #define fio_swap64(x) __builtin_bswap64(x)
249 #include <byteswap.h>
250 #define fio_swap16(x) bswap_16(x)
251 #define fio_swap32(x) bswap_32(x)
252 #define fio_swap64(x) bswap_64(x)
253 #endif /* fio_swapN */
255 #define CACHE_LINE_FILE \
256 "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
258 static inline int arch_cache_line_size(void)
263 fd = open(CACHE_LINE_FILE, O_RDONLY);
267 ret = read(fd, size, sizeof(size));
277 static inline unsigned long long get_fs_free_size(const char *path)
279 unsigned long long ret;
282 if (statfs(path, &s) < 0)
286 ret *= (unsigned long long) s.f_bfree;
290 static inline int os_trim(struct fio_file *f, unsigned long long start,
291 unsigned long long len)
298 if (!ioctl(f->fd, BLKDISCARD, range))
304 #ifdef CONFIG_SCHED_IDLE
305 static inline int fio_set_sched_idle(void)
307 struct sched_param p = { .sched_priority = 0, };
308 return sched_setscheduler(gettid(), SCHED_IDLE, &p);
313 #define RWF_UNCACHED 0x00000040