sys_sync           86 arch/arm64/include/asm/unistd32.h __SYSCALL(__NR_sync, sys_sync)
sys_sync          523 include/linux/syscalls.h asmlinkage long sys_sync(void);
sys_sync          258 include/uapi/asm-generic/unistd.h __SYSCALL(__NR_sync, sys_sync)
sys_sync          258 tools/include/uapi/asm-generic/unistd.h __SYSCALL(__NR_sync, sys_sync)