kernel/linux.git/tools/perf/util/record.h, branch v6.6.131

perf record: Reuse target::initial_delay

2023-03-13T17:52:14+00:00

This just simply replace record_opts::initial_delay with target::initial_delay. Nothing else is changed. Signed-off-by: Changbin Du Acked-by: Namhyung Kim Cc: Alexander Shishkin Cc: Hui Wang Cc: Ingo Molnar Cc: Jiri Olsa Cc: Mark Rutland Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20230302031146.2801588-3-changbin.du@huawei.com Signed-off-by: Arnaldo Carvalho de Melo

perf evlist: Remove group option.

2022-12-14T18:28:18+00:00

The group option predates grouping events using curly braces added in commit 89efb029502d7f2d ("perf tools: Add support to parse event group syntax"). The --group option was retained for legacy support (in August 2012) but keeping it adds complexity. Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Alexey Bayduraev Cc: Andi Kleen Cc: Anshuman Khandual Cc: Athira Jajeev Cc: Eelco Chaudron Cc: German Gomez Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: Kan Liang Cc: Kim Phillips Cc: Leo Yan Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Riccardo Mancini Cc: Sandipan Das Cc: Sean Christopherson Cc: Shaomin Deng Cc: Stephane Eranian Cc: Timothy Hayes Cc: Xing Zhengjun Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20221213232651.1269909-6-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo

perf record: Add new option to sample identifier

2022-06-23T14:54:22+00:00

In preparation for recording sideband events in a virtual machine guest so that they can be injected into a host perf.data file. Add an option to always include sample type PERF_SAMPLE_IDENTIFIER. Committer testing: # perf record sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.020 MB perf.data (7 samples) ] # perf evlist -v cycles: size: 128, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|PERIOD, read_format: ID, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, sample_id_all: 1, mmap2: 1, comm_exec: 1, ksymbol: 1, bpf_event: 1 # # # perf record --sample-identifier sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.022 MB perf.data (7 samples) ] # perf evlist -v cycles: size: 128, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|PERIOD|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, sample_id_all: 1, mmap2: 1, comm_exec: 1, ksymbol: 1, bpf_event: 1 # Signed-off-by: Adrian Hunter Acked-by: Ian Rogers Tested-by: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lore.kernel.org/r/20220615052511.4441-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf record: Extend --threads command line option

2022-02-10T19:27:00+00:00

Extend --threads option in perf record command line interface. The option can have a value in the form of masks that specify CPUs to be monitored with data streaming threads and its layout in system topology. The masks can be filtered using CPU mask provided via -C option. The specification value can be user defined list of masks. Masks separated by colon define CPUs to be monitored by one thread and affinity mask of that thread is separated by slash. For example: /:/ specifies parallel threads layout that consists of two threads with corresponding assigned CPUs to be monitored. The specification value can be a string e.g. "cpu", "core" or "package" meaning creation of data streaming thread for every CPU or core or package to monitor distinct CPUs or CPUs grouped by core or package. The option provided with no or empty value defaults to per-cpu parallel threads layout creating data streaming thread for every CPU being monitored. Document --threads option syntax and parallel data streaming modes in Documentation/perf-record.txt. Suggested-by: Jiri Olsa Suggested-by: Namhyung Kim Reviewed-by: Riccardo Mancini Signed-off-by: Alexey Bayduraev Tested-by: Jiri Olsa Tested-by: Riccardo Mancini Acked-by: Andi Kleen Acked-by: Namhyung Kim Cc: Adrian Hunter Cc: Alexander Antonov Cc: Alexander Shishkin Cc: Alexei Budankov Cc: Ingo Molnar Cc: Peter Zijlstra Link: https://lore.kernel.org/r/079e2619be70c465317cf7c9fdaf5fa069728c32.1642440724.git.alexey.v.bayduraev@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf record: Start threads in the beginning of trace streaming

2022-02-10T19:25:53+00:00

Start thread in detached state because its management is implemented via messaging to avoid any scaling issues. Block signals prior thread start so only main tool thread would be notified on external async signals during data collection. Thread affinity mask is used to assign eligible CPUs for the thread to run. Wait and sync on thread start using thread ack pipe. Reviewed-by: Riccardo Mancini Signed-off-by: Alexey Bayduraev Tested-by: Jiri Olsa Tested-by: Riccardo Mancini Acked-by: Namhyung Kim Cc: Adrian Hunter Cc: Alexander Antonov Cc: Alexander Shishkin Cc: Alexei Budankov Cc: Andi Kleen Cc: Ingo Molnar Cc: Namhyung Kim Cc: Peter Zijlstra Link: https://lore.kernel.org/r/95784dd9f7c81ee408eab27b50b4c09ad4cf7be6.1642440724.git.alexey.v.bayduraev@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf record: Add --synth option

2021-09-17T11:55:00+00:00

Add an option to control the synthesizing behavior. --synth Fine-tune event synthesis: default=all This can be useful when we know it doesn't need some synthesis like in a specific usecase and/or when using pipe: $ perf record -a --all-cgroups --synth cgroup -o- sleep 1 | \ > perf report -i- -s cgroup Committer notes: Added a clarification to the man page entry for --synth that this is about pre-existing threads. Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: Andi Kleen Cc: Ian Rogers Cc: Ingo Molnar Cc: Jin Yao Cc: Peter Zijlstra Cc: Stephane Eranian Link: https //lore.kernel.org/r/20210811044658.1313391-2-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf record: Add support for PERF_SAMPLE_CODE_PAGE_SIZE

2021-01-20T17:34:20+00:00

Adds the infrastructure to sample the code address page size. Introduce a new --code-page-size option for perf record. Signed-off-by: Kan Liang Originally-by: Stephane Eranian Acked-by: Jiri Olsa Acked-by: Namhyung Kim Cc: Andi Kleen Cc: Ingo Molnar Cc: Mark Rutland Cc: Michael Ellerman Cc: Will Deacon Link: https://lore.kernel.org/r/20210105195752.43489-4-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf record: Add --buildid-mmap option to enable PERF_RECORD_MMAP2's build id

2020-12-28T14:35:57+00:00

Add --buildid-mmap option to enable build id in PERF_RECORD_MMAP2 events. It will only work if there's kernel support for that and it disables build id cache (implies --no-buildid). It's also possible to enable it permanently via config option in ~/.perfconfig file: [record] build-id=mmap Also added build_id bit in the verbose output for perf_event_attr: # perf record --buildid-mmap -vv ... perf_event_attr: type 1 size 120 ... build_id 1 Adding also missing text_poke bit. Committer testing: $ perf record -h build Usage: perf record [] [] or: perf record [] -- [] -B, --no-buildid do not collect buildids in perf.data -N, --no-buildid-cache do not update the buildid cache --buildid-all Record build-id of all DSOs regardless of hits --buildid-mmap Record build-id in map events $ $ perf record --buildid-mmap sleep 1 Failed: no support to record build id in mmap events, update your kernel. $ After adding the needed kernel bits in a test kernel: $ perf record -vv --buildid-mmap sleep 1 |& grep -m1 build Enabling build id in mmap2 events. $ perf evlist -v cycles:u: size: 120, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|PERIOD, read_format: ID, disabled: 1, inherit: 1, exclude_kernel: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1, ksymbol: 1, bpf_event: 1, build_id: 1 $ Signed-off-by: Jiri Olsa Tested-by: Arnaldo Carvalho de Melo Acked-by: Ian Rogers Acked-by: Namhyung Kim Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Alexei Budankov Cc: Andi Kleen Cc: Mark Rutland Cc: Michael Petlan Cc: Peter Zijlstra Cc: Song Liu Cc: Stephane Eranian Link: http://lore.kernel.org/lkml/20201214105457.543111-16-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf record: Support new sample type for data page size

2020-12-17T17:36:16+00:00

Support new sample type PERF_SAMPLE_DATA_PAGE_SIZE for page size. Add new option --data-page-size to record sample data page size. Signed-off-by: Kan Liang Acked-by: Namhyung Kim Cc: Andi Kleen Cc: Jiri Olsa Cc: Mark Rutland Cc: Michael Ellerman Cc: Stephane Eranian Cc: Will Deacon Link: http://lore.kernel.org/lkml/20201130172803.2676-3-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add FIFO file names as alternative options to --control

2020-09-04T17:38:15+00:00

Enable the --control option to accept file names as an alternative to file descriptors. Example: $ mkfifo perf.control $ mkfifo perf.ack $ cat perf.ack & [1] 6808 $ perf record --control fifo:perf.control,perf.ack -- sleep 300 & [2] 6810 $ echo disable > perf.control $ Events disabled ack $ echo enable > perf.control $ Events enabled ack $ echo disable > perf.control $ Events disabled ack $ kill %2 [ perf record: Woken up 4 times to write data ] $ [ perf record: Captured and wrote 0.018 MB perf.data (7 samples) ] [1]- Done cat perf.ack [2]+ Terminated perf record --control fifo:perf.control,perf.ack -- sleep 300 $ Signed-off-by: Adrian Hunter Acked-by: Alexey Budankov Acked-by: Jiri Olsa Tested-by: Arnaldo Carvalho de Melo Cc: Andi Kleen Cc: Namhyung Kim Link: http://lore.kernel.org/lkml/20200902105707.11491-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo