hello everybody~
I want to test my system call that be goint to add to kernel,
But when i finish compiling kernel, i found my system call code not work.
the code i want to return the system time "struct timespec":

/*----------Start of mycall.c----------*/
#include <linux/linkage.h>
#include <linux/time.h>
#include <linux/kernel.h>

asmlinkage struct timespec sys_mycall(void) {
struct timespec now;
now=current_kernel_time();
printk(KERN_EMERG "the 320 system call run success!!!!\n ");
return now;

}
/*-----------End of mycall.c-----------*/



so i want a method to test the new system call before compiling kernel.
if you know the method or tool, please tell me
thank you

Im sorry but no. You need to build(make) the kernel before utilization of the new system call. It does suck to be a kernel developer at times.

And you can't return anything other than ints from system calls either. Did you add an entry to the system call table? For every processor architecture?