1 /*
2 * Copyright (C) 2019 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "src/trace_processor/importers/ftrace/ftrace_module_impl.h"
18 #include "perfetto/base/build_config.h"
19 #include "src/trace_processor/importers/common/trace_blob_view.h"
20 #include "src/trace_processor/importers/ftrace/ftrace_parser.h"
21 #include "src/trace_processor/importers/ftrace/ftrace_tokenizer.h"
22 #include "src/trace_processor/timestamped_trace_piece.h"
23
24 #include "protos/perfetto/trace/trace_packet.pbzero.h"
25
26 namespace perfetto {
27 namespace trace_processor {
28
29 using perfetto::protos::pbzero::TracePacket;
30
FtraceModuleImpl(TraceProcessorContext * context)31 FtraceModuleImpl::FtraceModuleImpl(TraceProcessorContext* context)
32 : tokenizer_(context), parser_(context) {
33 RegisterForField(TracePacket::kFtraceEventsFieldNumber, context);
34 RegisterForField(TracePacket::kFtraceStatsFieldNumber, context);
35 }
36
TokenizePacket(const protos::pbzero::TracePacket::Decoder & decoder,TraceBlobView * packet,int64_t,PacketSequenceState * seq_state,uint32_t field_id)37 ModuleResult FtraceModuleImpl::TokenizePacket(
38 const protos::pbzero::TracePacket::Decoder& decoder,
39 TraceBlobView* packet,
40 int64_t /*packet_timestamp*/,
41 PacketSequenceState* seq_state,
42 uint32_t field_id) {
43 if (field_id == TracePacket::kFtraceEventsFieldNumber) {
44 auto ftrace_field = decoder.ftrace_events();
45 const size_t fld_off = packet->offset_of(ftrace_field.data);
46 tokenizer_.TokenizeFtraceBundle(packet->slice(fld_off, ftrace_field.size),
47 seq_state);
48 return ModuleResult::Handled();
49 }
50 return ModuleResult::Ignored();
51 }
52
ParsePacket(const protos::pbzero::TracePacket::Decoder & decoder,const TimestampedTracePiece &,uint32_t field_id)53 void FtraceModuleImpl::ParsePacket(
54 const protos::pbzero::TracePacket::Decoder& decoder,
55 const TimestampedTracePiece&,
56 uint32_t field_id) {
57 if (field_id == TracePacket::kFtraceStatsFieldNumber) {
58 parser_.ParseFtraceStats(decoder.ftrace_stats());
59 }
60 }
61
ParseFtracePacket(uint32_t cpu,const TimestampedTracePiece & ttp)62 void FtraceModuleImpl::ParseFtracePacket(uint32_t cpu,
63 const TimestampedTracePiece& ttp) {
64 util::Status res = parser_.ParseFtraceEvent(cpu, ttp);
65 if (!res.ok()) {
66 PERFETTO_ELOG("%s", res.message().c_str());
67 }
68 }
69
70 } // namespace trace_processor
71 } // namespace perfetto
72