Linux arch/arm64 Add system calls

1, add a system call, increase the total number of system calls +1

diff in Kernel/include/uapi/asm-generic/unistd.h

+ + #define __nr_mysyscall 285

+ + SYSCALL (__nr_mysyscall, Sys_mysyscall)

#undef __nr_syscalls

--#define __nr_syscalls 285

+ + #define __nr_syscalls 286

2, statement

diff in Kernel/include/linux/syscalls.h

+ + asmlinkage long sys_mysyscall (const char __USER * process)

#endif

3, realize

diff in Kernel/kernel/sys.c

+ + SYSCALL_DEFINE1 (mysyscall, const char __user *, process)

++ {

+ + struct task_struct * p=current;

+ + print_log ("Add syscall%s%s\n", p->comm,process);

+ + return 1;

++ }

4,JNI Layer Call

#include <sys/syscall.h>

#define __nr_mysyscall 285

int Ch=syscall (__nr_mysyscall,process);

Linux arch/arm64 Add system calls