diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2022-09-12 11:34:11 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-10-04 14:55:23 +0300 |
| commit | da4062021e0e6da52d4919b6d77dbd77fa847f97 (patch) | |
| tree | 9269e7def2fa36b1785bbede8897a199c963525e /tools/perf/builtin-record.c | |
| parent | 2c1c9e351a43878043684be92615d7002c8ea0c6 (diff) | |
| download | linux-da4062021e0e6da52d4919b6d77dbd77fa847f97.tar.xz | |
perf tools: Add debug messages and comments for testing
Add debug messages to enable scripts to track aspects of 'perf record'
behaviour. The messages will be consumed after 'perf record' has run,
with the exception of "perf record has started" which is consequently
flushed.
Put comments so developers know which messages are also being used by test
scripts.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20220912083412.7058-11-adrian.hunter@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 f4f1619199e5..52d254b1530c 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -2434,10 +2434,14 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) record__uniquify_name(rec); + /* Debug message used by test scripts */ + pr_debug3("perf record opening and mmapping events\n"); if (record__open(rec) != 0) { err = -1; goto out_free_threads; } + /* Debug message used by test scripts */ + pr_debug3("perf record done opening and mmapping events\n"); session->header.env.comp_mmap_len = session->evlist->core.mmap_len; if (rec->opts.kcore) { @@ -2580,6 +2584,10 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) if (err) goto out_child; + /* Debug message used by test scripts */ + pr_debug3("perf record has started\n"); + fflush(stderr); + trigger_ready(&auxtrace_snapshot_trigger); trigger_ready(&switch_output_trigger); perf_hooks__invoke_record_start(); |