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author | Adrian Hunter <adrian.hunter@intel.com> | 2022-06-15 08:25:11 +0300 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-06-23 11:54:22 -0300 |
commit | 61110883a02090cb5fd1f890978e238cc99f0164 (patch) | |
tree | f3bac64b8e09ffcf14078c7a529b667e3ecb0b28 /arch | |
parent | 6b080312fc821658a479e74bdb0c3f7d9ac5838f (diff) | |
download | linux-stable-61110883a02090cb5fd1f890978e238cc99f0164.tar.gz linux-stable-61110883a02090cb5fd1f890978e238cc99f0164.tar.bz2 linux-stable-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 'arch')
0 files changed, 0 insertions, 0 deletions