[v8,00/20] Trace file version 7 - compression

Message

Tzvetomir Stoyanov (VMware) Jan. 26, 2022, 9:48 a.m. UTC

Introduced compression of the metadata and trace data in trace files version
7. The compression is optional and disabled by default. A new parameter of
"trace-cmd record" is introduced, which can be used to configure the trace
file compression:
 --compression < none / any / name of the desired algorithm >

v8 changes:
 - Bug fixes.
 - Code cleanups.
 - Rebase.
v7 changes:
 - Bug fixes.
 - Code cleanups.
 - Rebase.
v6 changes:
 - Rebased on top of the latest master.
 - Introduced new metadata strings section.
 - Use 8 bytes for section size.
v5 changes:
 - Rebased on top of the latest master.
v4 changes:
 - Rebased on top of the latest master.
v3 changes:
 - Rebased on top of the latest master.
v2 changes:
 - fixed issues of split and convert commands with some corner cases

Tzvetomir Stoyanov (VMware) (20):
  trace-cmd library: Add support for compression algorithms
  trace-cmd library: Internal helpers for compressing data
  trace-cmd library: Internal helpers for uncompressing data
  trace-cmd library: Inherit compression algorithm from input file
  trace-cmd library: New API to configure compression on an output
    handler
  trace-cmd library: Write compression header in the trace file
  trace-cmd library: Compress part of the trace file
  trace-cmd library: Add local helper function for data compression
  trace-cmd library: Compress the trace data
  trace-cmd library: Decompress the options section, if it is compressed
  trace-cmd library: Read compression header
  trace-cmd library: Extend the input handle with trace data
    decompression context
  trace-cmd library: Initialize CPU data decompression logic
  trace-cmd library: Add logic for in-memory decompression
  trace-cmd library: Read compressed latency data
  trace-cmd library: Decompress file sections on reading
  trace-cmd library: Add zlib compression algorithm
  trace-cmd list: Show supported compression algorithms
  trace-cmd record: Add compression to the trace context
  trace-cmd report: Add new parameter for trace file compression

 Documentation/trace-cmd/trace-cmd-list.1.txt  |   3 +
 Makefile                                      |   7 +
 lib/trace-cmd/Makefile                        |   8 +
 .../include/private/trace-cmd-private.h       |  46 +-
 lib/trace-cmd/include/trace-cmd-local.h       |  17 +
 lib/trace-cmd/trace-compress-zlib.c           | 109 ++
 lib/trace-cmd/trace-compress.c                | 981 ++++++++++++++++++
 lib/trace-cmd/trace-input.c                   | 513 ++++++++-
 lib/trace-cmd/trace-output.c                  | 352 ++++++-
 lib/trace-cmd/trace-util.c                    |  10 +
 tracecmd/Makefile                             |   4 +
 tracecmd/trace-list.c                         |  26 +
 tracecmd/trace-record.c                       |  40 +-
 tracecmd/trace-usage.c                        |   6 +
 14 files changed, 2048 insertions(+), 74 deletions(-)
 create mode 100644 lib/trace-cmd/trace-compress-zlib.c
 create mode 100644 lib/trace-cmd/trace-compress.c