perf record: Implement COMPRESSED event record and its attributes
authorAlexey Budankov <alexey.budankov@linux.intel.com>
Mon, 18 Mar 2019 17:41:33 +0000 (20:41 +0300)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Wed, 15 May 2019 19:36:49 +0000 (16:36 -0300)
commit42e1fd80a5b8bf9188ddb502b788433ece189aae
tree31791a14903175893fd217ca6c55c4d4a6da6b73
parentd3c8c08e75c4cbb6a940323092b40fcfd1de5380
perf record: Implement COMPRESSED event record and its attributes

Implemented PERF_RECORD_COMPRESSED event, related data types, header
feature and functions to write, read and print feature attributes from
the trace header section.

comp_mmap_len preserves the size of mmaped kernel buffer that was used
during collection. comp_mmap_len size is used on loading stage as the
size of decomp buffer for decompression of COMPRESSED events content.

Committer notes:

Fixed up conflict with BPF_PROG_INFO and BTF_BTF header features.

Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/ebbaf031-8dda-3864-ebc6-7922d43ee515@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/perf/Documentation/perf.data-file-format.txt
tools/perf/builtin-record.c
tools/perf/perf.h
tools/perf/util/env.h
tools/perf/util/event.c
tools/perf/util/event.h
tools/perf/util/header.c
tools/perf/util/header.h