diff options
| -rw-r--r-- | tools/perf/Documentation/perf-intel-pt.txt | 5 | ||||
| -rw-r--r-- | tools/perf/util/intel-pt.c | 17 |
2 files changed, 14 insertions, 8 deletions
diff --git a/tools/perf/Documentation/perf-intel-pt.txt b/tools/perf/Documentation/perf-intel-pt.txt index 20ac592a2641..d22dead7bbe0 100644 --- a/tools/perf/Documentation/perf-intel-pt.txt +++ b/tools/perf/Documentation/perf-intel-pt.txt @@ -882,7 +882,10 @@ For example, for errors but not overflow or data lost errors: The "d" option will cause the creation of a file "intel_pt.log" containing all decoded packets and instructions. Note that this option slows down the decoder -and that the resulting file may be very large. +and that the resulting file may be very large. The "d" option may be followed +by flags which affect what debug messages will or will not be logged. Each flag +must be preceded by either '+' or '-'. The flags support by Intel PT are: + -a Suppress logging of perf events In addition, the period of the "instructions" event can be specified. e.g. diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c index 8b860a6f4ea9..5f70f009d616 100644 --- a/tools/perf/util/intel-pt.c +++ b/tools/perf/util/intel-pt.c @@ -249,6 +249,11 @@ static void intel_pt_dump_sample(struct perf_session *session, intel_pt_dump(pt, sample->aux_sample.data, sample->aux_sample.size); } +static bool intel_pt_log_events(struct intel_pt *pt) +{ + return !(pt->synth_opts.log_minus_flags & AUXTRACE_LOG_FLG_ALL_PERF_EVTS); +} + static int intel_pt_do_fix_overlap(struct intel_pt *pt, struct auxtrace_buffer *a, struct auxtrace_buffer *b) { @@ -2586,10 +2591,6 @@ static int intel_pt_context_switch(struct intel_pt *pt, union perf_event *event, return -EINVAL; } - intel_pt_log("context_switch: cpu %d pid %d tid %d time %"PRIu64" tsc %#"PRIx64"\n", - cpu, pid, tid, sample->time, perf_time_to_tsc(sample->time, - &pt->tc)); - ret = intel_pt_sync_switch(pt, cpu, tid, sample->time); if (ret <= 0) return ret; @@ -2746,9 +2747,11 @@ static int intel_pt_process_event(struct perf_session *session, if (!err && event->header.type == PERF_RECORD_TEXT_POKE) err = intel_pt_text_poke(pt, event); - intel_pt_log("event %u: cpu %d time %"PRIu64" tsc %#"PRIx64" ", - event->header.type, sample->cpu, sample->time, timestamp); - intel_pt_log_event(event); + if (intel_pt_enable_logging && intel_pt_log_events(pt)) { + intel_pt_log("event %u: cpu %d time %"PRIu64" tsc %#"PRIx64" ", + event->header.type, sample->cpu, sample->time, timestamp); + intel_pt_log_event(event); + } return err; } |