I am using nvidia-352 with nvidia-prime. To fix the tearing issue(well known) I was trying to add options in /etc/X11/xorg.conf. But after restart nvidia or prime replace xorg.conf file.
My question is that, how can I add options in xorg.conf so that it will persist after restart? There should be a xorg configuration generation script. nvidia-prime wiki page doesn't have any information about this.