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Subject[PATCH V8 0/7] Freq/CPU%/CORE_BUSY% support
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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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