diff options
| author | Alexey Budankov <alexey.budankov@linux.intel.com> | 2019-03-18 20:41:33 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-05-15 16:36:49 -0300 |
| commit | 42e1fd80a5b8bf9188ddb502b788433ece189aae (patch) | |
| tree | 31791a14903175893fd217ca6c55c4d4a6da6b73 /tools/perf/builtin-record.c | |
| parent | d3c8c08e75c4cbb6a940323092b40fcfd1de5380 (diff) | |
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>
Diffstat (limited to 'tools/perf/builtin-record.c')
| -rw-r--r-- | tools/perf/builtin-record.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 386e665a166f..45a80b3584ad 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -372,6 +372,11 @@ static int record__mmap_flush_parse(const struct option *opt, return 0; } +static int record__comp_enabled(struct record *rec) +{ + return rec->opts.comp_level > 0; +} + static int process_synthesized_event(struct perf_tool *tool, union perf_event *event, struct perf_sample *sample __maybe_unused, @@ -888,6 +893,8 @@ static void record__init_features(struct record *rec) perf_header__clear_feat(&session->header, HEADER_CLOCKID); perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT); + if (!record__comp_enabled(rec)) + perf_header__clear_feat(&session->header, HEADER_COMPRESSED); perf_header__clear_feat(&session->header, HEADER_STAT); } @@ -1245,6 +1252,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) err = -1; goto out_child; } + session->header.env.comp_mmap_len = session->evlist->mmap_len; err = bpf__apply_obj_config(); if (err) { |