[00/12] TSC trace clock to nanosecond conversion

Message

Tzvetomir Stoyanov (VMware) March 15, 2021, 6:18 a.m. UTC

Added new logic for converting TSC event's timestamps to nanoseconds. This
trace clock is used by default in host-guest tracing session in combination
with KVM time sync plugin. The parameters for conversion are retrieved by
the perf kernel interface.
New option is added to "trace-cmd report" command to force displaying raw
time stamps from the trace file, without any corrections to the time stamps.

These changes depend on "Refactoring and improvements of time sync logic"
patch set.

Tzvetomir Stoyanov (VMware) (12):
  trace-cmd: Add initial perf interface in trace-cmd library
  trace-cmd: Add logic for TSC to nanosecond conversion
  trace-cmd: Append new options into guest trace file at the end of the
    tracing session
  trace-cmd: Add a new option in trace file metadata for tsc2nsec
    conversion
  trace-cmd: Save information for tsc to nanoseconds conversion in trace
    file
  trace-cmd: Read information for tsc to nanoseconds conversion from
    trace file
  trace-cmd: Remove unneeded multiply in events timestamp reading
  trace-cmd: Perform all timestamp corrections in a single function
  trace-cmd: Convert tsc timestamps to nanosecods when reading trace
    data from a file
  trace-cmd: Set order and priorities when applying timestamp
    corrections
  trace-cmd: Add a new flag to disable any timestamp corrections
  trace-cmd: Add new parameter "--raw-ts" to "trace-cmd report" command

 lib/trace-cmd/Makefile                        |   1 +
 .../include/private/trace-cmd-private.h       |  16 ++
 lib/trace-cmd/trace-input.c                   |  96 ++++++++---
 lib/trace-cmd/trace-perf.c                    | 105 ++++++++++++
 lib/trace-cmd/trace-timesync.c                |   1 -
 tracecmd/include/trace-local.h                |   7 +
 tracecmd/trace-dump.c                         |  18 ++
 tracecmd/trace-read.c                         |   9 +-
 tracecmd/trace-record.c                       | 155 +++++++++++++++---
 9 files changed, 358 insertions(+), 50 deletions(-)
 create mode 100644 lib/trace-cmd/trace-perf.c