Run-time instrumentation reporting

摘要

An aspect includes run-time instrumentation reporting. An instruction stream is executed by a processor. Run-time instrumentation information of the executing instruction stream is captured by the processor. Run-time instrumentation records are created based on the captured run-time instrumentation information. A run-time instrumentation sample point of the executing instruction stream on the processor is detected. A reporting group is stored in a run-time instrumentation program buffer. The storing is based on the detecting and the storing includes: determining a current address of the run-time instrumentation program buffer, the determining based on instruction accessible run-time instrumentation controls; and storing the reporting group into the run-time instrumentation program buffer based on an origin address and the current address of the run-time instrumentation program buffer, the reporting group including the created run-time instrumentation records.

主权项

1. A computer program product for run-time instrumentation reporting, the computer program product comprising:
a non-transitory tangible storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising: executing an instruction stream of a computer program, the executing by a processor; determining, based on contents of an instrumentation control field in a program status word (PSW) associated with the computer program, that run-time instrumentation information of said executing instruction stream should be captured, wherein the contents of the PSW associated with the computer program persist during context switches by the processor; capturing, by the processor, the run-time instrumentation information of said executing instruction stream; based on said captured run-time instrumentation information, creating run-time instrumentation records; detecting a run-time instrumentation sample point of the executing instruction stream on the processor; and storing a reporting group in a run-time instrumentation program buffer, the storing based on the detecting a run-time instrumentation sample point, the storing comprising:
determining a current address of the run-time instrumentation program buffer, the determining based on instruction accessible run-time instrumentation controls; andstoring the reporting group into the run-time instrumentation program buffer based on an origin address of the run-time instrumentation program buffer and the current address of the run-time instrumentation program buffer, the reporting group comprising said created run-time instrumentation records.