From: Zwane Mwaikambo <zwane@linuxpower.ca>

The following patch adds support for the XScale performance monitoring unit
to OProfile.  It uses not only the performance monitoring counters, but
also the clock cycle counter (CCNT) allowing for upto 5 usable counters.

The code has been developed and tested on an IOP331 (hardware courtesy of
Intel) therefore i haven't been able to test it on XScale PMU1 systems. 
Testing on said systems would be appreciated, and if done, please uncomment
the #define DEBUG line at the top of op_model_xscale.c

OProfile userspace support has already been committed and should be
available via CVS.