diff options
Diffstat (limited to 'simpleperf/event_attr.cpp')
| -rw-r--r-- | simpleperf/event_attr.cpp | 96 |
1 files changed, 55 insertions, 41 deletions
diff --git a/simpleperf/event_attr.cpp b/simpleperf/event_attr.cpp index 418bf443..2b059312 100644 --- a/simpleperf/event_attr.cpp +++ b/simpleperf/event_attr.cpp @@ -26,8 +26,26 @@ #include "event_type.h" #include "utils.h" +static std::string BitsToString(const std::string& name, uint64_t bits, + const std::vector<std::pair<int, std::string>>& bit_names) { + std::string result; + for (auto& p : bit_names) { + if (bits & p.first) { + bits &= ~p.first; + if (!result.empty()) { + result += ", "; + } + result += p.second; + } + } + if (bits != 0) { + LOG(DEBUG) << "unknown " << name << " bits: " << std::hex << bits; + } + return result; +} + static std::string SampleTypeToString(uint64_t sample_type) { - std::unordered_map<int, std::string> map = { + static std::vector<std::pair<int, std::string>> sample_type_names = { {PERF_SAMPLE_IP, "ip"}, {PERF_SAMPLE_TID, "tid"}, {PERF_SAMPLE_TIME, "time"}, @@ -40,25 +58,20 @@ static std::string SampleTypeToString(uint64_t sample_type) { {PERF_SAMPLE_STREAM_ID, "stream_id"}, {PERF_SAMPLE_RAW, "raw"}, }; + return BitsToString("sample_type", sample_type, sample_type_names); +} - std::string result; - for (auto p : map) { - if (sample_type & p.first) { - sample_type &= ~p.first; - if (!result.empty()) { - result += ", "; - } - result += p.second; - } - } - if (sample_type != 0) { - LOG(DEBUG) << "unknown sample_type bits: " << std::hex << sample_type; - } - - return result; +static std::string ReadFormatToString(uint64_t read_format) { + static std::vector<std::pair<int, std::string>> read_format_names = { + {PERF_FORMAT_TOTAL_TIME_ENABLED, "total_time_enabled"}, + {PERF_FORMAT_TOTAL_TIME_RUNNING, "total_time_running"}, + {PERF_FORMAT_ID, "id"}, + {PERF_FORMAT_GROUP, "group"}, + }; + return BitsToString("read_format", read_format, read_format_names); } -EventAttr EventAttr::CreateDefaultAttrToMonitorEvent(const EventType& event_type) { +perf_event_attr CreateDefaultPerfEventAttr(const EventType& event_type) { perf_event_attr attr; memset(&attr, 0, sizeof(attr)); attr.size = sizeof(perf_event_attr); @@ -66,52 +79,53 @@ EventAttr EventAttr::CreateDefaultAttrToMonitorEvent(const EventType& event_type attr.config = event_type.config; attr.mmap = 1; attr.comm = 1; + attr.disabled = 1; // Changing read_format affects the layout of the data read from perf_event_file, namely // PerfCounter in event_fd.h. attr.read_format = PERF_FORMAT_TOTAL_TIME_ENABLED | PERF_FORMAT_TOTAL_TIME_RUNNING | PERF_FORMAT_ID; attr.sample_type |= PERF_SAMPLE_IP | PERF_SAMPLE_TID | PERF_SAMPLE_TIME | PERF_SAMPLE_PERIOD; - attr.disabled = 1; - return EventAttr(attr); + return attr; } -void EventAttr::Dump(size_t indent) const { +void DumpPerfEventAttr(const perf_event_attr& attr, size_t indent) { std::string event_name = "unknown"; - const EventType* event_type = EventTypeFactory::FindEventTypeByConfig(attr_.type, attr_.config); + const EventType* event_type = EventTypeFactory::FindEventTypeByConfig(attr.type, attr.config); if (event_type != nullptr) { event_name = event_type->name; } - PrintIndented(indent, "event_attr_: for event %s\n", event_name.c_str()); + PrintIndented(indent, "event_attr: for event %s\n", event_name.c_str()); - PrintIndented(indent + 2, "type %u, size %u, config %llu\n", attr_.type, attr_.size, attr_.config); + PrintIndented(indent + 1, "type %u, size %u, config %llu\n", attr.type, attr.size, attr.config); - if (attr_.freq != 0) { - PrintIndented(indent + 2, "sample_freq %llu\n", attr_.sample_freq); + if (attr.freq != 0) { + PrintIndented(indent + 1, "sample_freq %llu\n", attr.sample_freq); } else { - PrintIndented(indent + 2, "sample_period %llu\n", attr_.sample_period); + PrintIndented(indent + 1, "sample_period %llu\n", attr.sample_period); } - PrintIndented(indent + 2, "sample_type (0x%llx) %s\n", attr_.sample_type, - SampleTypeToString(attr_.sample_type).c_str()); + PrintIndented(indent + 1, "sample_type (0x%llx) %s\n", attr.sample_type, + SampleTypeToString(attr.sample_type).c_str()); - PrintIndented(indent + 2, "read_format (0x%llx)\n", attr_.read_format); + PrintIndented(indent + 1, "read_format (0x%llx) %s\n", attr.read_format, + ReadFormatToString(attr.read_format).c_str()); - PrintIndented(indent + 2, "disabled %llu, inherit %llu, pinned %llu, exclusive %llu\n", - attr_.disabled, attr_.inherit, attr_.pinned, attr_.exclusive); + PrintIndented(indent + 1, "disabled %llu, inherit %llu, pinned %llu, exclusive %llu\n", + attr.disabled, attr.inherit, attr.pinned, attr.exclusive); - PrintIndented(indent + 2, "exclude_user %llu, exclude_kernel %llu, exclude_hv %llu\n", - attr_.exclude_user, attr_.exclude_kernel, attr_.exclude_hv); + PrintIndented(indent + 1, "exclude_user %llu, exclude_kernel %llu, exclude_hv %llu\n", + attr.exclude_user, attr.exclude_kernel, attr.exclude_hv); - PrintIndented(indent + 2, "exclude_idle %llu, mmap %llu, comm %llu, freq %llu\n", - attr_.exclude_idle, attr_.mmap, attr_.comm, attr_.freq); + PrintIndented(indent + 1, "exclude_idle %llu, mmap %llu, comm %llu, freq %llu\n", + attr.exclude_idle, attr.mmap, attr.comm, attr.freq); - PrintIndented(indent + 2, "inherit_stat %llu, enable_on_exec %llu, task %llu\n", - attr_.inherit_stat, attr_.enable_on_exec, attr_.task); + PrintIndented(indent + 1, "inherit_stat %llu, enable_on_exec %llu, task %llu\n", + attr.inherit_stat, attr.enable_on_exec, attr.task); - PrintIndented(indent + 2, "watermark %llu, precise_ip %llu, mmap_data %llu\n", attr_.watermark, - attr_.precise_ip, attr_.mmap_data); + PrintIndented(indent + 1, "watermark %llu, precise_ip %llu, mmap_data %llu\n", attr.watermark, + attr.precise_ip, attr.mmap_data); - PrintIndented(indent + 2, "sample_id_all %llu, exclude_host %llu, exclude_guest %llu\n", - attr_.sample_id_all, attr_.exclude_host, attr_.exclude_guest); + PrintIndented(indent + 1, "sample_id_all %llu, exclude_host %llu, exclude_guest %llu\n", + attr.sample_id_all, attr.exclude_host, attr.exclude_guest); } |