Hi Folks,
I was looking at the autorecon2-cp, autorecon-pial and autorecon-wm flags in recon-all help and also here
http://surfer.nmr.mgh.harvard.edu/fswiki/OtherUsefulFlags

My interpretation is when I use autorecon-pial, I only need the command: 
recon-all --autorecon-pial -s subject 

While for autorecon2-cp and autorecon2-wm we need the command:

recon-all -autorecon2-cp -autorecon3 -s subject
recon-all -autorecon2-wm -autorecon3 -s subject

since for autorecon2-cp and autorecon2-wm only a subset of stages are processed as described in recon-all help:
-autorecon2-cp : process stages 12-23 (uses -f w/ mri_normalize, -keep w/ mri_seg)
-autorecon2-wm : process stages 15-23

Thanks
Mehul