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| author |   Adrian Hunter <adrian.hunter@intel.com> | 2022-06-15 08:25:11 +0300 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-06-23 11:54:22 -0300 |
| commit | 61110883a02090cb5fd1f890978e238cc99f0164 (patch) | |
| tree | f3bac64b8e09ffcf14078c7a529b667e3ecb0b28 /tools/perf/util | |
| parent | perf record: Always record id index (diff) | |
| download | linux-dev-61110883a02090cb5fd1f890978e238cc99f0164.tar.xz linux-dev-61110883a02090cb5fd1f890978e238cc99f0164.zip | |
perf record: Add new option to sample identifier
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 <adrian.hunter@intel.com>
Acked-by: Ian Rogers <irogers@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20220615052511.4441-1-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util')
| -rw-r--r-- | tools/perf/util/record.c | 2 | ||||
| -rw-r--r-- | tools/perf/util/record.h | 1 |
2 files changed, 2 insertions, 1 deletions
diff --git a/tools/perf/util/record.c b/tools/perf/util/record.c index 5b09ecbb05dc..b529636ab3ea 100644 --- a/tools/perf/util/record.c +++ b/tools/perf/util/record.c @@ -121,7 +121,7 @@ void evlist__config(struct evlist *evlist, struct record_opts *opts, struct call evlist__for_each_entry(evlist, evsel) evsel__config_leader_sampling(evsel, evlist); - if (opts->full_auxtrace) { + if (opts->full_auxtrace || opts->sample_identifier) { /* * Need to be able to synthesize and parse selected events with * arbitrary sample types, which requires always being able to diff --git a/tools/perf/util/record.h b/tools/perf/util/record.h index be9a957501f4..4269e916f450 100644 --- a/tools/perf/util/record.h +++ b/tools/perf/util/record.h @@ -28,6 +28,7 @@ struct record_opts { bool sample_time; bool sample_time_set; bool sample_cpu; + bool sample_identifier; bool period; bool period_set; bool running_time; |