

afs_syscall, break, ftime, getpmsg, gtty, lock, madvise1, mpx, prof, profil, putpmsg, security, stty, tuxcall, ulimit, vserver - unimplemented system calls
These system calls are not implemented in the Linux 2.6.22 kernel.
These system calls always return -1 and set errno to ENOSYS .
Note that ftime (3) profil (3) and ulimit (3) are implemented as library functions.
Some system calls, like alloc_hugepages (2) free_hugepages (2) ioperm (2) iopl (2) and vm86 (2) only exist on certain architectures.
Some system calls, like ipc (2) create_module (2) init_module (2) and delete_module (2) only exist when the Linux kernel was built with support for them.
syscalls (2)