linux_dsm_epyc7002/tools/perf/tests/attr
Arnaldo Carvalho de Melo 46d525eae2 perf test: Update command line callchain attribute tests
The "struct perf_event_attr setup" entry in 'perf test' is in fact a
series of tests that will exec the tools, passing different sets of
command line arguments to then intercept the sys_perf_event_open
syscall, in user space, to check that the perf_event_attr->sample_type
and other feature request bits are setup as expected.

We recently restored the callchain requesting command line argument, -g,
to not require a parameter ("dwarf" or "fp"), instead using a default
("fp" for now) and making the long option variant, --call-chain, be the
one to be used when a different callchain collection method is
preferred.

The "struct perf_event_attr setup" test failed because we forgot to
update the tests involving callchains, not switching from, '-g dwarf' to
'--call-chain dwarf', making 'perf test' detect it:

  [root@sandy ~]# perf test -v 13
  13: struct perf_event_attr setup                           :
  --- start ---
  running '/home/acme/libexec/perf-core/tests/attr/test-record-basic'
  running '/home/acme/libexec/perf-core/tests/attr/test-record-branch-any'
  <SNIP>
  running '/home/acme/libexec/perf-core/tests/attr/test-record-graph-default'
  running '/home/acme/libexec/perf-core/tests/attr/test-record-graph-dwarf'
  expected sample_type=12583, got 295
  expected exclude_callchain_user=1, got 0
  expected sample_stack_user=8192, got 0
  FAILED '/home/acme/libexec/perf-core/tests/attr/test-record-graph-dwarf' - match failure
  ---- end ----
  struct perf_event_attr setup: FAILED!
  [root@sandy ~]#

Fix all of them now to use --call-chain when explicitely specifying a
method.

There is still work to do, as '-g fp', for instance, passed without
problems.

In that case 'perf test' saw no problems as the intercepted syscall got
the bits as expected, i.e. the default is 'fp', but the fact that 'fp'
may be an existing program and the specified workload would then be
passed as a parameter to it is an usability problem that needs fixing.

Next merge window tho.

Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-jr3oq1k5iywnp7vvqlslzydm@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-11-01 10:42:57 -03:00
..
base-record perf tests: Fix exclude_guest|exclude_host checking for attr tests 2013-05-29 15:15:19 +03:00
base-stat perf tests: Fix exclude_guest|exclude_host checking for attr tests 2013-05-29 15:15:19 +03:00
README perf test: Update command line callchain attribute tests 2013-11-01 10:42:57 -03:00
test-record-basic perf tests: Add attr record basic test 2012-11-01 17:00:31 -03:00
test-record-branch-any perf tests: Add attr record branch any test 2012-11-05 14:02:18 -03:00
test-record-branch-filter-any perf tests: Add attr record branch filter tests 2012-11-05 14:02:21 -03:00
test-record-branch-filter-any_call perf tests: Add attr record branch filter tests 2012-11-05 14:02:21 -03:00
test-record-branch-filter-any_ret perf tests: Add attr record branch filter tests 2012-11-05 14:02:21 -03:00
test-record-branch-filter-hv perf tests: Add attr record branch filter tests 2012-11-05 14:02:21 -03:00
test-record-branch-filter-ind_call perf tests: Add attr record branch filter tests 2012-11-05 14:02:21 -03:00
test-record-branch-filter-k perf tests: Add attr record branch filter tests 2012-11-05 14:02:21 -03:00
test-record-branch-filter-u perf tests: Add attr record branch filter tests 2012-11-05 14:02:21 -03:00
test-record-C0 perf tests: Add attr record -C cpu test 2013-03-15 13:06:00 -03:00
test-record-count perf tests: Add attr record count test 2012-11-01 17:07:48 -03:00
test-record-data perf tests: Fix attr test for record -d option 2013-05-29 15:11:10 +03:00
test-record-freq perf tests: Add attr record freq test 2012-11-01 17:07:12 -03:00
test-record-graph-default perf test: Update command line callchain attribute tests 2013-11-01 10:42:57 -03:00
test-record-graph-dwarf perf test: Update command line callchain attribute tests 2013-11-01 10:42:57 -03:00
test-record-graph-fp perf test: Update command line callchain attribute tests 2013-11-01 10:42:57 -03:00
test-record-group perf evsel: No need to always ask for PERF_FORMAT_TOTAL_TIME_{ENABLED,RUNNING} 2012-12-11 17:17:17 -03:00
test-record-group1 perf test: Remove leftover temp file left by one of the attr tests 2013-01-24 16:40:07 -03:00
test-record-group-sampling perf tests: Add attr record group sampling test 2013-08-07 17:35:23 -03:00
test-record-no-delay perf tests: Add attr record no delay test 2012-11-05 14:02:09 -03:00
test-record-no-inherit perf tests: Add attr record no-inherit test 2012-11-01 17:08:40 -03:00
test-record-no-samples perf tests: Add attr record no samples test 2012-11-01 17:08:11 -03:00
test-record-period perf tests: Add attr record period test 2012-11-01 17:08:03 -03:00
test-record-raw perf tests: Add attr record raw test 2012-11-05 14:02:07 -03:00
test-stat-basic perf tests: Add missing attr stat basic test 2012-11-05 14:03:59 -03:00
test-stat-C0 perf tests: Add attr stat -C cpu test 2013-03-15 13:06:00 -03:00
test-stat-default perf tests: Add attr stat default test 2012-11-05 14:03:57 -03:00
test-stat-detailed-1 perf tests: Add attr stat default test 2012-11-05 14:03:57 -03:00
test-stat-detailed-2 perf tests: Add attr stat default test 2012-11-05 14:03:57 -03:00
test-stat-detailed-3 perf tests: Add attr stat default test 2012-11-05 14:03:57 -03:00
test-stat-group perf tests: Add attr stat group test 2012-11-05 14:02:37 -03:00
test-stat-group1 perf tools: Fix attributes for '{}' defined event groups 2012-11-14 16:51:50 -03:00
test-stat-no-inherit perf tests: Add attr stat no-inherit test 2012-11-05 14:02:30 -03:00

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 -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)