How to do a system call in kernel module programming?

[jzh]

thanks.
(Linux version is : linux-2.6)

[Dolda2000]

You simply don't want to do a syscall from kernel space. Unless you're extremely lucky, it won't work, since any addresses you pass to the syscall will be interpreted as userspace addresses as opposed to kernelspace, as you'd want.

What exactly is it that you want to do that would require a syscall?