Need help to root my Xperia L C2104, running CM 12.1 nightly

I 've flashed CM 12.1 in my xperia l and it's running fine.

Additionally i need root access. Please some1 share how to do that.

P.S: Tried kingroot app ended up with error "not rooted".

from xda-developers http://ift.tt/1L3BRhf
via IFTTT