mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-16 15:45:45 +00:00
880a784344
Add test that a sibling with leader sampling doesn't have its period cleared. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrii Nakryiko <andriin@fb.com> Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: John Fastabend <john.fastabend@gmail.com> Cc: KP Singh <kpsingh@chromium.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Martin KaFai Lau <kafai@fb.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <songliubraving@fb.com> Cc: Stephane Eranian <eranian@google.com> Cc: Yonghong Song <yhs@fb.com> Cc: bpf@vger.kernel.org Cc: netdev@vger.kernel.org Link: http://lore.kernel.org/lkml/20200912025655.1337192-5-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
66 lines
3.5 KiB
Text
66 lines
3.5 KiB
Text
The struct perf_event_attr test (attr tests) support
|
|
====================================================
|
|
This testing support is embedded into perf directly and is governed
|
|
by the PERF_TEST_ATTR environment variable and hook inside the
|
|
sys_perf_event_open function.
|
|
|
|
The general idea is to store 'struct perf_event_attr' details for
|
|
each event created within single perf command. Each event details
|
|
are stored into separate text file. Once perf command is finished
|
|
these files are checked for values we expect for command.
|
|
|
|
The attr tests consist of following parts:
|
|
|
|
tests/attr.c
|
|
------------
|
|
This is the sys_perf_event_open hook implementation. The hook
|
|
is triggered when the PERF_TEST_ATTR environment variable is
|
|
defined. It must contain name of existing directory with access
|
|
and write permissions.
|
|
|
|
For each sys_perf_event_open call event details are stored in
|
|
separate file. Besides 'struct perf_event_attr' values we also
|
|
store 'fd' and 'group_fd' values to allow checking for groups.
|
|
|
|
tests/attr.py
|
|
-------------
|
|
This is the python script that does all the hard work. It reads
|
|
the test definition, executes it and checks results.
|
|
|
|
tests/attr/
|
|
-----------
|
|
Directory containing all attr test definitions.
|
|
Following tests are defined (with perf commands):
|
|
|
|
perf record kill (test-record-basic)
|
|
perf record -b kill (test-record-branch-any)
|
|
perf record -j any kill (test-record-branch-filter-any)
|
|
perf record -j any_call kill (test-record-branch-filter-any_call)
|
|
perf record -j any_ret kill (test-record-branch-filter-any_ret)
|
|
perf record -j hv kill (test-record-branch-filter-hv)
|
|
perf record -j ind_call kill (test-record-branch-filter-ind_call)
|
|
perf record -j k kill (test-record-branch-filter-k)
|
|
perf record -j u kill (test-record-branch-filter-u)
|
|
perf record -c 123 kill (test-record-count)
|
|
perf record -d kill (test-record-data)
|
|
perf record -F 100 kill (test-record-freq)
|
|
perf record -g kill (test-record-graph-default)
|
|
perf record --call-graph dwarf kill (test-record-graph-dwarf)
|
|
perf record --call-graph fp kill (test-record-graph-fp)
|
|
perf record --group -e cycles,instructions kill (test-record-group)
|
|
perf record -e '{cycles,instructions}' kill (test-record-group1)
|
|
perf record -e '{cycles/period=1/,instructions/period=2/}:S' kill (test-record-group2)
|
|
perf record -D kill (test-record-no-delay)
|
|
perf record -i kill (test-record-no-inherit)
|
|
perf record -n kill (test-record-no-samples)
|
|
perf record -c 100 -P kill (test-record-period)
|
|
perf record -c 1 --pfm-events=cycles:period=2 (test-record-pfm-period)
|
|
perf record -R kill (test-record-raw)
|
|
perf stat -e cycles kill (test-stat-basic)
|
|
perf stat kill (test-stat-default)
|
|
perf stat -d kill (test-stat-detailed-1)
|
|
perf stat -dd kill (test-stat-detailed-2)
|
|
perf stat -ddd kill (test-stat-detailed-3)
|
|
perf stat --group -e cycles,instructions kill (test-stat-group)
|
|
perf stat -e '{cycles,instructions}' kill (test-stat-group1)
|
|
perf stat -i -e cycles kill (test-stat-no-inherit)
|