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    Subject[PATCH V8 0/7] Freq/CPU%/CORE_BUSY% support
    Date
    From: Kan Liang <kan.liang@intel.com>

    This patch set supports per-sample freq/CPU%/CORE_BUSY% print in perf
    report -D and --stdio.
    For printing these information, the perf.data file must have been obtained
    by group read and using special events cycles, ref-cycles, msr/tsc/,
    msr/aperf/ or msr/mperf/.

    - Freq (MHz): The frequency during the sample interval. Needs cycles
    ref-cycles event.
    - CPU%: CPU utilization during the sample interval. Needs ref-cycles and
    msr/tsc/ events.
    - CORE_BUSY%: actual percent performance (APERF/MPERF%) during the
    sample interval. Needs msr/aperf/ and msr/mperf/ events.

    Here is an example:

    $ perf record --freq-perf ~/tchain_edit

    $ perf report --stdio --group --show-freq-perf

    Overhead FREQ MHz CPU% CORE_BUSY%
    Command Shared Object Symbol
    ........................................ ......... ..... ..........
    ........... ................ ......................

    99.54% 99.54% 99.53% 99.53% 99.53% 2301 96 99
    tchain_edit tchain_edit [.] f3
    0.20% 0.20% 0.20% 0.20% 0.20% 2301 98 99
    tchain_edit tchain_edit [.] f2
    0.05% 0.05% 0.05% 0.05% 0.05% 2300 98 99
    tchain_edit [kernel.vmlinux] [k] read_tsc

    Changes since V1:
    - Save cpu max freq to header when recording
    - Read cpu max freq and msr type from header when reporting

    Changes since V2:
    - Introduce generic FEAT for CPU related data stored
    - Make cpu max freq and msr type part of perf_session_env
    - rename cpu_u to cpu_util
    - Don't save sample value in perf_sample and discards new iterator.
    Calculating the freq_perf_info in add_entry_cb callback
    - Introduce symbol_conf.freq_perf_type for related hpp column visibility

    Changes since V3:
    - add a identifier 'tag' for CPU attributes, max frequency.
    - add backpointers to evlist for env, and evsel for evlist.
    - Use bitmask for freq_perf_type
    - Replace macros by functions to caculate freq, cpu_util and core_busy
    - Move all caculation codes under symbol_conf.show_freq_perf condition.

    Changes since V4:
    - Store cpu attributes id as tag and more readable cpu_attr

    Changes since V5:
    - Rename freq to max_freq and use it
    - Add a loop in process_cpu_attributes to facility future extension

    Changes since V6:
    - Split rename perf_session_env and add backpointer to evlist patches

    Changes since V7:
    - Introduce --freq-perf option for perf record
    - Factor out fix for dump_sample

    Kan Liang (7):
    perf,tools: introduce generic FEAT for CPU attributes
    perf,tools: read msr pmu type from header.
    perf,record: introduce --freq-perf option
    perf,tools: fix dump_sample crash when evsel is NULL.
    perf,tools: Dump per-sample freq/CPU%/CORE_BUSY% in report -D
    perf,tools: caculate and save freq/CPU%/CORE_BUSY% in he_stat
    perf,tools: Show freq/CPU%/CORE_BUSY% in perf report --stdio

    tools/perf/Documentation/perf-record.txt | 4 ++
    tools/perf/Documentation/perf-report.txt | 12 ++++++
    tools/perf/builtin-record.c | 39 +++++++++++++++++-
    tools/perf/builtin-report.c | 56 +++++++++++++++++++++++++
    tools/perf/ui/hist.c | 71 +++++++++++++++++++++++++++++---
    tools/perf/util/cpumap.c | 32 ++++++++++++++
    tools/perf/util/cpumap.h | 1 +
    tools/perf/util/header.c | 62 ++++++++++++++++++++++++++++
    tools/perf/util/header.h | 13 ++++++
    tools/perf/util/hist.h | 3 ++
    tools/perf/util/session.c | 33 +++++++++++++--
    tools/perf/util/session.h | 64 ++++++++++++++++++++++++++++
    tools/perf/util/sort.c | 3 ++
    tools/perf/util/sort.h | 3 ++
    tools/perf/util/symbol.h | 12 +++++-
    15 files changed, 397 insertions(+), 11 deletions(-)

    --
    1.8.3.1



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