On Fri, Dec 21, 2012 at 10:18:28PM +0000, Pratik Patel wrote:

What user interface do you plan to provide for the CTI? Maybe
something consistent with other CoreSight components in sysfs to
allow users to enable, disable, map and unmap ???

Please let me know your thoughts.

Rather than have your current approach of dev nodes + sysfs config files for
each coresight device, I think it might be better to follow something closer
to ftrace and stick per-device directories under debugfs/coresight/. Then you
can have a pipe file and some config files in the same directory for each
component. You also don't need to do any mapping operations with this (just
post-process the stream directly).

It might also be fun to play with file redirection for sources and sinks, but
that's probably a bit too invasive.

Will