Messages in this thread | | | From | Jin Yao <> | Subject | [PATCH v4 0/2] perf header: Support HYBRID_TOPOLOGY and HYBRID_CPU_PMU_CAPS | Date | Fri, 14 May 2021 20:29:46 +0800 |
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AlderLake uses a hybrid architecture utilizing Golden Cove cores (core cpu) and Gracemont cores (atom cpu). It would be useful to let user know the hybrid topology, the HYBRID_TOPOLOGY feature in header indicates which cpus are core cpus, and which cpus are atom cpus.
On hybrid platform, it may have several cpu pmus, such as, "cpu_core" and "cpu_atom". The HYBRID_CPU_PMU_CAPS feature in perf header is created to support multiple cpu pmus.
v4: --- - Only minor update in '[PATCH v4 2/2] perf header: Support HYBRID_CPU_PMU_CAPS feature'. 1. Directly return process_per_cpu_pmu_caps() in process_cpu_pmu_caps. Remove the variable 'ret'. 2. Set 'ret = -1' if (!n->pmu_name) in process_hybrid_cpu_pmu_caps().
v3: --- - For "[PATCH v3 1/2] perf header: Support HYBRID_TOPOLOGY feature", update HEADER_HYBRID_TOPOLOGY format in perf.data-file-format.txt.
- For "[PATCH v3 2/2] perf header: Support HYBRID_CPU_PMU_CAPS feature", Don't extend the original CPU_PMU_CAPS to support hybrid cpu pmus. Instead, create a new feature 'HYBRID_CPU_PMU_CAPS' in header.
v2: --- - In "perf header: Support HYBRID_TOPOLOGY feature", don't use the n->map to print the cpu list, just use n->cpus.
- Separate hybrid CPU_PMU_CAPS support into two patches: perf header: Write hybrid CPU_PMU_CAPS perf header: Process hybrid CPU_PMU_CAPS
- Add some words to perf.data-file-format.txt for HYBRID_TOPOLOGY and hybrid CPU_PMU_CAPS.
Jin Yao (2): perf header: Support HYBRID_TOPOLOGY feature perf header: Support HYBRID_CPU_PMU_CAPS feature
.../Documentation/perf.data-file-format.txt | 33 +++ tools/perf/util/cputopo.c | 80 ++++++ tools/perf/util/cputopo.h | 13 + tools/perf/util/env.c | 12 + tools/perf/util/env.h | 16 ++ tools/perf/util/header.c | 249 ++++++++++++++++-- tools/perf/util/header.h | 2 + tools/perf/util/pmu-hybrid.h | 11 + 8 files changed, 397 insertions(+), 19 deletions(-)
-- 2.17.1
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