diff options
| -rw-r--r-- | tools/perf/util/data-convert-bt.c | 112 |
1 files changed, 111 insertions, 1 deletions
diff --git a/tools/perf/util/data-convert-bt.c b/tools/perf/util/data-convert-bt.c index 6729f4d9df7c..1f608a6e2c14 100644 --- a/tools/perf/util/data-convert-bt.c +++ b/tools/perf/util/data-convert-bt.c @@ -352,6 +352,84 @@ static int add_tracepoint_values(struct ctf_writer *cw, return ret; } +static int +add_bpf_output_values(struct bt_ctf_event_class *event_class, + struct bt_ctf_event *event, + struct perf_sample *sample) +{ + struct bt_ctf_field_type *len_type, *seq_type; + struct bt_ctf_field *len_field, *seq_field; + unsigned int raw_size = sample->raw_size; + unsigned int nr_elements = raw_size / sizeof(u32); + unsigned int i; + int ret; + + if (nr_elements * sizeof(u32) != raw_size) + pr_warning("Incorrect raw_size (%u) in bpf output event, skip %lu bytes\n", + raw_size, nr_elements * sizeof(u32) - raw_size); + + len_type = bt_ctf_event_class_get_field_by_name(event_class, "raw_len"); + len_field = bt_ctf_field_create(len_type); + if (!len_field) { + pr_err("failed to create 'raw_len' for bpf output event\n"); + ret = -1; + goto put_len_type; + } + + ret = bt_ctf_field_unsigned_integer_set_value(len_field, nr_elements); + if (ret) { + pr_err("failed to set field value for raw_len\n"); + goto put_len_field; + } + ret = bt_ctf_event_set_payload(event, "raw_len", len_field); + if (ret) { + pr_err("failed to set payload to raw_len\n"); + goto put_len_field; + } + + seq_type = bt_ctf_event_class_get_field_by_name(event_class, "raw_data"); + seq_field = bt_ctf_field_create(seq_type); + if (!seq_field) { + pr_err("failed to create 'raw_data' for bpf output event\n"); + ret = -1; + goto put_seq_type; + } + + ret = bt_ctf_field_sequence_set_length(seq_field, len_field); + if (ret) { + pr_err("failed to set length of 'raw_data'\n"); + goto put_seq_field; + } + + for (i = 0; i < nr_elements; i++) { + struct bt_ctf_field *elem_field = + bt_ctf_field_sequence_get_field(seq_field, i); + + ret = bt_ctf_field_unsigned_integer_set_value(elem_field, + ((u32 *)(sample->raw_data))[i]); + + bt_ctf_field_put(elem_field); + if (ret) { + pr_err("failed to set raw_data[%d]\n", i); + goto put_seq_field; + } + } + + ret = bt_ctf_event_set_payload(event, "raw_data", seq_field); + if (ret) + pr_err("failed to set payload for raw_data\n"); + +put_seq_field: + bt_ctf_field_put(seq_field); +put_seq_type: + bt_ctf_field_type_put(seq_type); +put_len_field: + bt_ctf_field_put(len_field); +put_len_type: + bt_ctf_field_type_put(len_type); + return ret; +} + static int add_generic_values(struct ctf_writer *cw, struct bt_ctf_event *event, struct perf_evsel *evsel, @@ -597,6 +675,12 @@ static int process_sample_event(struct perf_tool *tool, return -1; } + if (perf_evsel__is_bpf_output(evsel)) { + ret = add_bpf_output_values(event_class, event, sample); + if (ret) + return -1; + } + cs = ctf_stream(cw, get_sample_cpu(cw, sample, evsel)); if (cs) { if (is_flush_needed(cs)) @@ -744,6 +828,25 @@ static int add_tracepoint_types(struct ctf_writer *cw, return ret; } +static int add_bpf_output_types(struct ctf_writer *cw, + struct bt_ctf_event_class *class) +{ + struct bt_ctf_field_type *len_type = cw->data.u32; + struct bt_ctf_field_type *seq_base_type = cw->data.u32_hex; + struct bt_ctf_field_type *seq_type; + int ret; + + ret = bt_ctf_event_class_add_field(class, len_type, "raw_len"); + if (ret) + return ret; + + seq_type = bt_ctf_field_type_sequence_create(seq_base_type, "raw_len"); + if (!seq_type) + return -1; + + return bt_ctf_event_class_add_field(class, seq_type, "raw_data"); +} + static int add_generic_types(struct ctf_writer *cw, struct perf_evsel *evsel, struct bt_ctf_event_class *event_class) { @@ -755,7 +858,8 @@ static int add_generic_types(struct ctf_writer *cw, struct perf_evsel *evsel, * ctf event header * PERF_SAMPLE_READ - TODO * PERF_SAMPLE_CALLCHAIN - TODO - * PERF_SAMPLE_RAW - tracepoint fields are handled separately + * PERF_SAMPLE_RAW - tracepoint fields and BPF output + * are handled separately * PERF_SAMPLE_BRANCH_STACK - TODO * PERF_SAMPLE_REGS_USER - TODO * PERF_SAMPLE_STACK_USER - TODO @@ -824,6 +928,12 @@ static int add_event(struct ctf_writer *cw, struct perf_evsel *evsel) goto err; } + if (perf_evsel__is_bpf_output(evsel)) { + ret = add_bpf_output_types(cw, event_class); + if (ret) + goto err; + } + ret = bt_ctf_stream_class_add_event_class(cw->stream_class, event_class); if (ret) { pr("Failed to add event class into stream.\n"); |