Hi Amol,
I'm surprised that pmap 3.2.3 has the -x option but 3.2.6 doesn't have that option. I have version 3.2.7 of pmap and it does have the -x option. Have you checked pmap on Suse?
Otherwise you might try upgrading pmap on Suse to 3.2.7.
Cheers,
jdk