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Filename : README

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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)

Name	Size	Last Modified	Owner	Permissions
README	3.508 KB	April 15 2025 12:26:22	root	0644
base-record	0.554 KB	April 15 2025 12:26:22	root	0644
base-stat	0.544 KB	April 15 2025 12:26:22	root	0644
system-wide-dummy	0.74 KB	April 15 2025 12:26:22	root	0644
test-record-C0	0.399 KB	April 15 2025 12:26:22	root	0644
test-record-basic	0.103 KB	April 15 2025 12:26:22	root	0644
test-record-branch-any	0.143 KB	April 15 2025 12:26:22	root	0644
test-record-branch-filter-any	0.146 KB	April 15 2025 12:26:22	root	0644
test-record-branch-filter-any_call	0.152 KB	April 15 2025 12:26:22	root	0644
test-record-branch-filter-any_ret	0.151 KB	April 15 2025 12:26:22	root	0644
test-record-branch-filter-hv	0.146 KB	April 15 2025 12:26:22	root	0644
test-record-branch-filter-ind_call	0.152 KB	April 15 2025 12:26:22	root	0644
test-record-branch-filter-k	0.145 KB	April 15 2025 12:26:22	root	0644
test-record-branch-filter-u	0.145 KB	April 15 2025 12:26:22	root	0644
test-record-count	0.147 KB	April 15 2025 12:26:22	root	0644
test-record-data	0.265 KB	April 15 2025 12:26:22	root	0644
test-record-freq	0.127 KB	April 15 2025 12:26:22	root	0644
test-record-graph-default	0.121 KB	April 15 2025 12:26:22	root	0644
test-record-graph-dwarf	0.273 KB	April 15 2025 12:26:22	root	0644
test-record-graph-fp	0.134 KB	April 15 2025 12:26:22	root	0644
test-record-group	0.305 KB	April 15 2025 12:26:22	root	0644
test-record-group-sampling	0.527 KB	April 15 2025 12:26:22	root	0644
test-record-group1	0.308 KB	April 15 2025 12:26:22	root	0644
test-record-group2	0.423 KB	April 15 2025 12:26:22	root	0644
test-record-no-buffering	0.16 KB	April 15 2025 12:26:22	root	0644
test-record-no-inherit	0.131 KB	April 15 2025 12:26:22	root	0644
test-record-no-samples	0.121 KB	April 15 2025 12:26:22	root	0644
test-record-period	0.137 KB	April 15 2025 12:26:22	root	0644
test-record-pfm-period	0.184 KB	April 15 2025 12:26:22	root	0644
test-record-raw	0.122 KB	April 15 2025 12:26:22	root	0644
test-stat-C0	0.189 KB	April 15 2025 12:26:22	root	0644
test-stat-basic	0.104 KB	April 15 2025 12:26:22	root	0644
test-stat-default	2.397 KB	April 15 2025 12:26:22	root	0644
test-stat-detailed-1	3.299 KB	April 15 2025 12:26:22	root	0644
test-stat-detailed-2	4.642 KB	April 15 2025 12:26:22	root	0644
test-stat-detailed-3	5.092 KB	April 15 2025 12:26:22	root	0644
test-stat-group	0.238 KB	April 15 2025 12:26:22	root	0644
test-stat-group1	0.234 KB	April 15 2025 12:26:22	root	0644
test-stat-no-inherit	0.117 KB	April 15 2025 12:26:22	root	0644

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