Athira Rajeev 86f45d0f17 tools/perf/pmu-events/powerpc: Add support for compat events in json ... perf list picks the events supported for specific platform from pmu-events/arch/powerpc/<platform>. Example power10 events are in pmu-events/arch/powerpc/power10, power9 events are part of pmu-events/arch/powerpc/power9. The decision of which platform to pick is determined based on PVR value in powerpc. The PVR value is matched from pmu-events/arch/powerpc/mapfile.csv Example: Format: PVR,Version,JSON/file/pathname,Type 0x004[bcd][[:xdigit:]]{4},1,power8,core 0x0066[[:xdigit:]]{4},1,power8,core 0x004e[[:xdigit:]]{4},1,power9,core 0x0080[[:xdigit:]]{4},1,power10,core 0x0082[[:xdigit:]]{4},1,power10,core The code gets the PVR from system using get_cpuid_str function in arch/powerpc/util/headers.c ( from SPRN_PVR ) and compares with value from mapfile.csv In case of compat mode, say when partition is booted in a power9 mode when the system is a power10, add an entry to pick the ISA architected events from "pmu-events/arch/powerpc/compat". Add json file generic-events.json which will contain these events which is supported in compat mode. Suggested-by: Madhavan Srinivasan <maddy@linux.ibm.com> Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Tested-by: Disha Goel <disgoel@linux.ibm.com> Cc: akanksha@linux.ibm.com Cc: hbathini@linux.ibm.com Cc: kjain@linux.ibm.com Cc: linuxppc-dev@lists.ozlabs.org Link: https://lore.kernel.org/r/20241010145107.51211-1-atrajeev@linux.vnet.ibm.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>		2024-10-17 11:24:52 -07:00
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generic-events.json