[PATCH v2 0/3] perf header: Support HYBRID_TOPOLOGY and hybrid CPU_PMU_CAPS

[Jin Yao <yao.jin@linux.intel.com>]

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 CPU_PMU_CAPS feature in perf header is improved to support
multiple cpu pmus.

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 (3):
  perf header: Support HYBRID_TOPOLOGY feature
  perf header: Write hybrid CPU_PMU_CAPS
  perf header: Process hybrid CPU_PMU_CAPS

 .../Documentation/perf.data-file-format.txt   |  20 ++
 tools/perf/util/cputopo.c                     |  80 ++++++
 tools/perf/util/cputopo.h                     |  13 +
 tools/perf/util/env.c                         |  12 +
 tools/perf/util/env.h                         |  18 +-
 tools/perf/util/header.c                      | 269 ++++++++++++++++--
 tools/perf/util/header.h                      |   1 +
 tools/perf/util/pmu-hybrid.h                  |  11 +
 8 files changed, 400 insertions(+), 24 deletions(-)

-- 
2.17.1