From: Ilkka Koskinen Date: Thu, 13 Mar 2025 20:15:58 +0000 (+0000) Subject: perf vendor events arm64: AmpereOne/AmpereOneX: Mark LD_RETIRED impacted by errata X-Git-Tag: block-6.15-20250403~13^2~14 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=c0b60ce4615a4392338d833d59040f5fe2857d2c;p=linux-block.git perf vendor events arm64: AmpereOne/AmpereOneX: Mark LD_RETIRED impacted by errata Atomic instructions are both memory-reading and memory-writing instructions and so should be counted by both LD_RETIRED and ST_RETIRED performance monitoring events. However LD_RETIRED does not count atomic instructions. Signed-off-by: Ilkka Koskinen Reviewed-by: James Clark Link: https://lore.kernel.org/r/20250313201559.11332-2-ilkka@os.amperecomputing.com Signed-off-by: Namhyung Kim --- diff --git a/tools/perf/pmu-events/arch/arm64/ampere/ampereone/memory.json b/tools/perf/pmu-events/arch/arm64/ampere/ampereone/memory.json index 0711782bfa6b..13382d29b25f 100644 --- a/tools/perf/pmu-events/arch/arm64/ampere/ampereone/memory.json +++ b/tools/perf/pmu-events/arch/arm64/ampere/ampereone/memory.json @@ -1,6 +1,8 @@ [ { - "ArchStdEvent": "LD_RETIRED" + "ArchStdEvent": "LD_RETIRED", + "Errata": "Errata AC03_CPU_52", + "BriefDescription": "Instruction architecturally executed, condition code check pass, load. Impacted by errata -" }, { "ArchStdEvent": "MEM_ACCESS_RD" diff --git a/tools/perf/pmu-events/arch/arm64/ampere/ampereonex/memory.json b/tools/perf/pmu-events/arch/arm64/ampere/ampereonex/memory.json index a211d94aacde..6c06bc928415 100644 --- a/tools/perf/pmu-events/arch/arm64/ampere/ampereonex/memory.json +++ b/tools/perf/pmu-events/arch/arm64/ampere/ampereonex/memory.json @@ -1,6 +1,8 @@ [ { - "ArchStdEvent": "LD_RETIRED" + "ArchStdEvent": "LD_RETIRED", + "Errata": "Errata AC04_CPU_21", + "BriefDescription": "Instruction architecturally executed, condition code check pass, load. Impacted by errata -" }, { "ArchStdEvent": "MEM_ACCESS_RD"