[PATCH 00/37] perf intel-pt: Power events and PTWRITE

[Adrian Hunter]

Hi

Here are some patches to support Intel PT Power events and PTWRITE.
Power events report changes to C-state but I have also added support
for the existing CBR (core-to-bus ratio) packet and included that
when outputting power events.  The PTWRITE packet is associated with
the new ptwrite instruction, which is essentially just a way to stuff
a 32 or 64 bit value into the PT trace.  More details can be found in
the patches that add documentation and in the Intel SDM.

As far as I know, there isn't any hardware released that supports
the new packets, however the CBR packet is not new and will now be
visible by default.

There are also some miscellaneous improvements to Intel PT.

There are 3 patches that introduce a new way to define synthesized
events that carry arbitrary raw_data.  I sent an RFC about that earlier.
The 3 patches are:
      perf script: Add 'synth' event type for synthesized events
      perf script: Add 'synth' field for synthesized event payloads
      perf script: Add synthesized Intel PT power and ptwrite events


Adrian Hunter (37):
      perf intel-pt: Allow decoding with branch tracing disabled
      perf intel-pt: Add default config for pass-through branch enable
      perf intel-pt: Add documentation for new config terms
      perf intel-pt: Fix missing stack clear
      perf intel-pt: Ensure IP is zero when state is INTEL_PT_STATE_NO_IP
      perf intel-pt: Fix last_ip usage
      perf intel-pt: Ensure never to set 'last_ip' when packet 'count' is zero
      perf intel-pt: Use FUP always when scanning for an IP
      perf intel-pt: Add missing __fallthrough
      perf intel-pt: Clear FUP flag on error
      perf intel-pt: Add decoder support for ptwrite and power event packets
      perf intel-pt: Add reserved byte to CBR packet payload
      perf intel-pt: Move decoder error setting into one condition
      perf intel-pt: Add decoder support for CBR events
      perf intel-pt: Remove redundant initial_skip checks
      perf intel-pt: Fix transactions_sample_type
      perf tools: Fix message because cpu list option is -C not -c
      perf script: Fix message because field list option is -F not -f
      perf script: Add 'synth' event type for synthesized events
      perf script: Add 'synth' field for synthesized event payloads
      tools include: Add byte-swapping macros to kernel.h
      perf auxtrace: Add itrace option to output ptwrite events
      perf auxtrace: Add itrace option to output power events
      perf script: Add synthesized Intel PT power and ptwrite events
      perf intel-pt: Factor out common code synthesizing event samples
      perf intel-pt: Remove unused instructions_sample_period
      perf intel-pt: Join needlessly wrapped lines
      perf intel-pt: Tidy Intel PT evsel lookup into separate function
      perf intel-pt: Tidy messages into called function intel_pt_synth_event()
      perf intel-pt: Factor out intel_pt_set_event_name()
      perf intel-pt: Move code in intel_pt_synth_events() to simplify attr setting
      perf intel-pt: Synthesize new power and ptwrite events
      perf intel-pt: Add example script for power events and PTWRITE
      perf intel-pt: Update documentation to include new ptwrite and power events
      perf intel-pt: Do not use TSC packets for calculating CPU cycles to TSC
      perf auxtrace: Add CPU filter support
      perf intel-pt: Improve sample timestamp

 tools/include/linux/kernel.h                       |  35 +-
 tools/perf/Documentation/intel-pt.txt              |  78 ++-
 tools/perf/Documentation/itrace.txt                |   8 +-
 tools/perf/Documentation/perf-script.txt           |   6 +-
 tools/perf/arch/x86/util/intel-pt.c                |   5 +
 tools/perf/builtin-report.c                        |   1 +
 tools/perf/builtin-script.c                        | 207 ++++++-
 .../perf/scripts/python/bin/intel-pt-events-record |  13 +
 .../perf/scripts/python/bin/intel-pt-events-report |   3 +
 tools/perf/scripts/python/intel-pt-events.py       | 128 ++++
 tools/perf/util/auxtrace.c                         |  18 +
 tools/perf/util/auxtrace.h                         |   6 +
 tools/perf/util/event.h                            |  93 +++
 .../perf/util/intel-pt-decoder/intel-pt-decoder.c  | 304 +++++++++-
 .../perf/util/intel-pt-decoder/intel-pt-decoder.h  |  13 +
 .../util/intel-pt-decoder/intel-pt-pkt-decoder.c   | 110 +++-
 .../util/intel-pt-decoder/intel-pt-pkt-decoder.h   |   7 +
 tools/perf/util/intel-pt.c                         | 642 +++++++++++++++------
 tools/perf/util/session.c                          |   2 +-
 19 files changed, 1435 insertions(+), 244 deletions(-)
 create mode 100644 tools/perf/scripts/python/bin/intel-pt-events-record
 create mode 100644 tools/perf/scripts/python/bin/intel-pt-events-report
 create mode 100644 tools/perf/scripts/python/intel-pt-events.py


Regards
Adrian