Yabin Cui | ed91cd9 | 2015-04-28 15:54:13 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 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 | #ifndef SIMPLE_PERF_RECORD_FILE_FORMAT_H_ |
| 18 | #define SIMPLE_PERF_RECORD_FILE_FORMAT_H_ |
| 19 | |
| 20 | #include "perf_event.h" |
| 21 | |
| 22 | // The file structure of perf.data: |
| 23 | // file_header |
| 24 | // id_section |
| 25 | // attr section |
| 26 | // data section |
| 27 | // feature section |
| 28 | // |
| 29 | // The feature section has the following structure: |
| 30 | // a section descriptor array, each element contains the section information of one add_feature. |
| 31 | // data section of feature 1 |
| 32 | // data section of feature 2 |
| 33 | // .... |
| 34 | |
| 35 | namespace PerfFileFormat { |
| 36 | |
| 37 | enum { |
| 38 | FEAT_RESERVED = 0, |
| 39 | FEAT_FIRST_FEATURE = 1, |
| 40 | FEAT_TRACING_DATA = 1, |
| 41 | FEAT_BUILD_ID, |
| 42 | FEAT_HOSTNAME, |
| 43 | FEAT_OSRELEASE, |
| 44 | FEAT_VERSION, |
| 45 | FEAT_ARCH, |
| 46 | FEAT_NRCPUS, |
| 47 | FEAT_CPUDESC, |
| 48 | FEAT_CPUID, |
| 49 | FEAT_TOTAL_MEM, |
| 50 | FEAT_CMDLINE, |
| 51 | FEAT_EVENT_DESC, |
| 52 | FEAT_CPU_TOPOLOGY, |
| 53 | FEAT_NUMA_TOPOLOGY, |
| 54 | FEAT_BRANCH_STACK, |
| 55 | FEAT_PMU_MAPPINGS, |
| 56 | FEAT_GROUP_DESC, |
| 57 | FEAT_LAST_FEATURE, |
| 58 | FEAT_MAX_NUM = 256, |
| 59 | }; |
| 60 | |
| 61 | struct SectionDesc { |
| 62 | uint64_t offset; |
| 63 | uint64_t size; |
| 64 | }; |
| 65 | |
| 66 | static const char* PERF_MAGIC = "PERFILE2"; |
| 67 | |
| 68 | struct FileHeader { |
| 69 | char magic[8]; |
| 70 | uint64_t header_size; |
| 71 | uint64_t attr_size; |
| 72 | SectionDesc attrs; |
| 73 | SectionDesc data; |
| 74 | SectionDesc event_types; |
| 75 | unsigned char features[FEAT_MAX_NUM / 8]; |
| 76 | }; |
| 77 | |
| 78 | struct FileAttr { |
| 79 | perf_event_attr attr; |
| 80 | SectionDesc ids; |
| 81 | }; |
| 82 | |
| 83 | } // namespace PerfFileFormat |
| 84 | |
| 85 | #endif // SIMPLE_PERF_RECORD_FILE_FORMAT_H_ |