RK3588-android-source/bionic/libc/bionic
#include <unistd.h>
#include <sys/reboot.h>
extern "C" int __reboot(int, int, int, void*);
int reboot(int mode) {
return __reboot(LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, mode, nullptr);
}RK3588-android-source/kernel/reboot.c
SYSCALL_DEFINE4(reboot, int, magic1, int, magic2, unsigned int, cmd, void __user *, arg)
void kernel_power_off(void)