projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 11d232ec ACM |
1 | perf-inject(1) |
| 2 | ============== | |
| 3 | ||
| 4 | NAME | |
| 5 | ---- | |
| 6 | perf-inject - Filter to augment the events stream with additional information | |
| 7 | ||
| 8 | SYNOPSIS | |
| 9 | -------- | |
| 10 | [verse] | |
| 11 | 'perf inject <options>' | |
| 12 | ||
| 13 | DESCRIPTION | |
| 14 | ----------- | |
| 15 | perf-inject reads a perf-record event stream and repipes it to stdout. At any | |
| 16 | point the processing code can inject other events into the event stream - in | |
| 17 | this case build-ids (-b option) are read and injected as needed into the event | |
| 18 | stream. | |
| 19 | ||
| 20 | Build-ids are just the first user of perf-inject - potentially anything that | |
| 21 | needs userspace processing to augment the events stream with additional | |
| 22 | information could make use of this facility. | |
| 23 | ||
| 24 | OPTIONS | |
| 25 | ------- | |
| 26 | -b:: | |
| 27 | --build-ids=:: | |
| 28 | Inject build-ids into the output stream | |
| 29 | -v:: | |
| 30 | --verbose:: | |
| 31 | Be more verbose. | |
| e558a5bd AV |
32 | -i:: |
| 33 | --input=:: | |
| 34 | Input file name. (default: stdin) | |
| 35 | -o:: | |
| 36 | --output=:: | |
| 37 | Output file name. (default: stdout) | |
| 26a031e1 AV |
38 | -s:: |
| 39 | --sched-stat:: | |
| 40 | Merge sched_stat and sched_switch for getting events where and how long | |
| 41 | tasks slept. sched_switch contains a callchain where a task slept and | |
| 42 | sched_stat contains a timeslice how long a task slept. | |
| 11d232ec | 43 | |
| a7a2b8b4 AH |
44 | --kallsyms=<file>:: |
| 45 | kallsyms pathname | |
| 46 | ||
| 0f0aa5e0 AH |
47 | --itrace:: |
| 48 | Decode Instruction Tracing data, replacing it with synthesized events. | |
| 49 | Options are: | |
| 50 | ||
| 51 | i synthesize instructions events | |
| 52 | b synthesize branches events | |
| 53 | c synthesize branches events (calls only) | |
| 54 | r synthesize branches events (returns only) | |
| 55 | e synthesize error events | |
| 56 | d create a debug log | |
| 57 | g synthesize a call chain for instructions events | |
| 58 | ||
| 59 | The default is all events i.e. the same as --itrace=ibe | |
| 60 | ||
| 61 | In addition, the period (default 100000) for instructions events | |
| 62 | can be specified in units of: | |
| 63 | ||
| 64 | i instructions | |
| 65 | t ticks | |
| 66 | ms milliseconds | |
| 67 | us microseconds | |
| 68 | ns nanoseconds (default) | |
| 69 | ||
| 70 | Also the call chain size (default 16, max. 1024) for instructions | |
| 71 | events can be specified. | |
| 72 | ||
| 11d232ec ACM |
73 | SEE ALSO |
| 74 | -------- | |
| 75 | linkperf:perf-record[1], linkperf:perf-report[1], linkperf:perf-archive[1] |