[PATCH v2 0/8] Clean up libperf cpumap's empty function

[Ian Rogers]

Rename and clean up the use of libperf CPU map functions particularly
focussing on perf_cpu_map__empty that may return true for maps
containing CPUs but also with an "any CPU"/dummy value.

perf_cpu_map__nr is also troubling in that iterating an empty CPU map
will yield the "any CPU"/dummy value. Reduce the appearance of some
calls to this by using the perf_cpu_map__for_each_cpu macro.

v2: 6 patches were merged by Arnaldo. New patch added ensure empty
    maps are allocated as NULL (suggested by James Clark). Hopefully a
    fix to "perf arm-spe/cs-etm: Directly iterate CPU maps".

Ian Rogers (8):
  libperf cpumap: Add any, empty and min helpers
  libperf cpumap: Ensure empty cpumap is NULL from alloc
  perf arm-spe/cs-etm: Directly iterate CPU maps
  perf intel-pt/intel-bts: Switch perf_cpu_map__has_any_cpu_or_is_empty
    use
  perf cpumap: Clean up use of perf_cpu_map__has_any_cpu_or_is_empty
  perf arm64 header: Remove unnecessary CPU map get and put
  perf stat: Remove duplicate cpus_map_matched function
  perf cpumap: Use perf_cpu_map__for_each_cpu when possible

 tools/lib/perf/cpumap.c                       | 33 +++++++-
 tools/lib/perf/include/perf/cpumap.h          | 16 ++++
 tools/lib/perf/libperf.map                    |  4 +
 tools/perf/arch/arm/util/cs-etm.c             | 77 ++++++++-----------
 tools/perf/arch/arm64/util/arm-spe.c          |  4 +-
 tools/perf/arch/arm64/util/header.c           | 13 +---
 tools/perf/arch/x86/util/intel-bts.c          |  4 +-
 tools/perf/arch/x86/util/intel-pt.c           | 10 +--
 tools/perf/builtin-c2c.c                      |  6 +-
 tools/perf/builtin-stat.c                     | 31 ++------
 tools/perf/tests/bitmap.c                     | 13 ++--
 tools/perf/tests/topology.c                   | 46 +++++------
 tools/perf/util/auxtrace.c                    |  4 +-
 tools/perf/util/bpf_kwork.c                   | 16 ++--
 tools/perf/util/bpf_kwork_top.c               | 12 +--
 tools/perf/util/cpumap.c                      | 12 ++-
 tools/perf/util/record.c                      |  2 +-
 .../scripting-engines/trace-event-python.c    | 12 +--
 tools/perf/util/session.c                     |  5 +-
 tools/perf/util/stat.c                        |  2 +-
 tools/perf/util/svghelper.c                   | 20 +++--
 21 files changed, 175 insertions(+), 167 deletions(-)

-- 
2.43.0.429.g432eaa2c6b-goog