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    CONTROLLING OPERATION OF A RUN-TIME INSTRUMENTATION FACILITY FROM A LESSER-PRIVILEGED STATE
    4.
    发明专利
    CONTROLLING OPERATION OF A RUN-TIME INSTRUMENTATION FACILITY FROM A LESSER-PRIVILEGED STATE 未知

    公开(公告)号：CA2866792C

    公开(公告)日：2021-03-02

    申请号：CA2866792

    申请日：2013-03-01

    Applicant: IBM

    Inventor： FARRELL MARK S ,  GAINEY CHARLES W ,  MITRAN MARCEL ,  SHUM CHUNG-LUNG KEVIN ,  SLEGEL TIMOTHY ,  SMITH BRIAN LEONARD ,  STOODLEY KEVIN A

    IPC: G06F11/34

    Abstract: Embodiments of the invention relate to enabling and disabling execution of a run-time instrumentation facility. An instruction for execution by the processor in a lesser privileged state is fetched by the processor. It is determined, by the processor, that the run-time instrumentation facility permits execution of the instruction in the lesser-privileged state and that controls associated with the run-time instrumentation facility are valid. The run-time instrumentation facility is disabled based on the instruction being a run-time instrumentation facility off (RIOFF) instruction. The disabling includes updating a bit in a program status word (PSW) of the processor to indicate that run-time instrumentation data should not be captured by the processor. The run-time instrumentation facility is enabled based on the instruction being a run-time instrumentation facility on (RION) instruction. The enabling includes updating the bit in the PSW to indicate that run-time instrumentation data should be captured by the processor.

    RUN-TIME INSTRUMENTATION REPORTING
    5.
    发明专利
    RUN-TIME INSTRUMENTATION REPORTING 未知

    公开(公告)号：CA2866793C

    公开(公告)日：2021-01-12

    申请号：CA2866793

    申请日：2013-02-28

    Applicant: IBM

    Inventor： FARRELL MARK S ,  GAINEY CHARLES W ,  MITRAN MARCEL M ,  SHUM CHUNG-LUNG KEVIN ,  SMITH BRIAN LEONARD

    IPC: G06F11/34

    Abstract: Embodiments of the invention relate to 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.

    RUN-TIME INSTRUMENTATION DIRECTED SAMPLING
    6.
    发明专利
    RUN-TIME INSTRUMENTATION DIRECTED SAMPLING 未知

    公开(公告)号：CA2866809C

    公开(公告)日：2020-04-14

    申请号：CA2866809

    申请日：2013-03-01

    Applicant: IBM

    Inventor： GAINEY CHARLES W ,  MITRAN MARCEL ,  SHUM CHUNG-LUNG KEVIN ,  STOODLEY KEVIN A

    IPC: G06F11/34

    Abstract: Embodiments of the invention relate to implementing run-time instrumentation directed sampling. An aspect of the invention includes a method for implementing run-time instrumentation directed sampling. The method includes fetching a run-time instrumentation next (RINEXT) instruction from an instruction stream. The instruction stream includes the RINEXT instruction followed by a next sequential instruction (NSI) in program order. The method further includes executing the RINEXT instruction by a processor. The executing includes determining whether a current run-time instrumentation state enables setting a sample point for reporting run-time instrumentation information during program execution. Based on the current run-time instrumentation state enabling setting the sample point, the NSI is a sample instruction for causing a run-time instrumentation event. Based on executing the NSI sample instruction, the run-time instrumentation event causes recording of run-time instrumentation information into a run-time instrumentation program buffer as a reporting group.

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