On Thu, Jul 08, 2021 at 10:56:57PM +1000, Nicholas Piggin wrote: > Excerpts from Athira Rajeev's message of July 7, 2021 4:39 pm: > > From: Athira Rajeev <atraj...@linux.vnet.ibm.cm> > > > > Power10 performance monitoring unit (PMU) driver uses performance > > monitor counter 5 (PMC5) and performance monitor counter 6 (PMC6) > > for counting instructions and cycles. Event used for cycles is > > PM_RUN_CYC and instructions is PM_RUN_INST_CMPL. But counting of these > > events in wait state is controlled by the CC56RUN bit setting in > > Monitor Mode Control Register0 (MMCR0). If the CC56RUN bit is not > > set, PMC5/6 will not count when CTRL[RUN] is zero. > > What's the acutal bug here, can you explain a bit more? I thought > PM_RUN_CYC is supposed to be gated by the runlatch.
Would this renaming break compatibility with existing tools that presume PM_RUN_CYC and PM_RUN_INST_CMPL exist generically? PC
