IprSetActiveCounters will check whether the counters must be started at the same time and return the appropriate counter mask. By default, zero interrupts are skipped between samples, resulting in data being collected every interrupt. Creates sample buffers as requested. You may restrict sampling by requiring that the interrupted PC be within one of a group of PC ranges. The ranges are passed as an array of addresses, with the starting addresses occupying the even elements and the end addresses occupying the odd elements.
Index number Creates additional address histogram buffers.
Requires that histogram buffers be set up in the first place. When address histograms are read, the caller specifies an address range, and it is legal to specify a subset or superset of the address range of an existing histogram. Therefore, there is a possibility that a given read range may fall into more than one histogram range. To provide a way of resolving this ambiguity, use a different index number for each address range, or at least for each overlapping one. Start pt. for addr.