kernel_optimize_test/tools/perf/tests/attr
Ian Rogers 1b98c6e3ba perf test: Ensure sample_period is set libpfm4 events
Test that a command line option doesn't override the period set on a
libpfm4 event.

Without libpfm4 test passes as unsupported.

Signed-off-by: Ian Rogers <irogers@google.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: Jiri Olsa <jolsa@redhat.com>
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/20200728085734.609930-4-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-30 07:01:49 -03:00
..
base-record
base-stat
README perf test: Ensure sample_period is set libpfm4 events 2020-07-30 07:01:49 -03:00
system-wide-dummy perf record: Add dummy event during system wide synthesis 2020-05-28 10:03:25 -03:00
test-record-basic
test-record-branch-any
test-record-branch-filter-any
test-record-branch-filter-any_call
test-record-branch-filter-any_ret
test-record-branch-filter-hv
test-record-branch-filter-ind_call
test-record-branch-filter-k
test-record-branch-filter-u
test-record-C0 perf record: Add dummy event during system wide synthesis 2020-05-28 10:03:25 -03:00
test-record-count
test-record-data
test-record-freq
test-record-graph-default
test-record-graph-dwarf
test-record-graph-fp
test-record-group
test-record-group-sampling
test-record-group1
test-record-no-buffering
test-record-no-inherit
test-record-no-samples
test-record-period
test-record-pfm-period perf test: Ensure sample_period is set libpfm4 events 2020-07-30 07:01:49 -03:00
test-record-raw
test-stat-basic
test-stat-C0
test-stat-default
test-stat-detailed-1
test-stat-detailed-2
test-stat-detailed-3
test-stat-group
test-stat-group1
test-stat-no-inherit

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 -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)