linux-stable.git/tools/perf/tests/shell, branch v6.0

perf test: Fix test case 87 ("perf record tests") for hybrid systems

2022-09-29T12:52:56+00:00

The test case 87 ("perf record tests") failed on hybrid systems,the event
"cpu/br_inst_retired.near_call/p" is only for non-hybrid system. Correct
the test event to support both non-hybrid and hybrid systems.

Before:

  # ./perf test 87
  87: perf record tests                                   : FAILED!

After:

  # ./perf test 87
  87: perf record tests                                   : Ok

Fixes: 24f378e66021f559 ("perf test: Add basic perf record tests")
Reviewed-by: Kan Liang 
Signed-off-by: Xing Zhengjun 
Acked-by: Ian Rogers 
Cc: Alexander Shishkin 
Cc: Andi Kleen 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Link: https://lore.kernel.org/r/20220927051513.3768717-1-zhengjun.xing@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tests powerpc: Fix branch stack sampling test to include sanity check for branch filter

2022-09-26T13:24:31+00:00

Commit b55878c90ab92a24 ("perf test: Add test for branch stack
sampling") added test for branch stack sampling. There is a sanity check
in the beginning to skip the test if the hardware doesn't support branch
stack sampling.

Snippet
<<>>
skip the test if the hardware doesn't support branch stack sampling
perf record -b -o- -B true > /dev/null 2>&1 || exit 2
<<>>

But the testcase also uses branch sample types: save_type, any. if any
platform doesn't support the branch filters used in the test, the testcase
will fail. In powerpc, currently mutliple branch filters are not supported
and hence this test fails in powerpc. Fix the sanity check to look at
the support for branch filters used in this test before proceeding with
the test.

Fixes: b55878c90ab92a24 ("perf test: Add test for branch stack sampling")
Reported-by: Disha Goel 
Reviewed-by: Kajol Jain 
Signed-off-by: Athira Jajeev 
Cc: German Gomez 
Cc: Jiri Olsa 
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Madhavan Srinivasan 
Cc: Michael Ellerman 
Cc: Nageswara R Sastry 
Link: https://lore.kernel.org/r/20220921145255.20972-2-atrajeev@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo

perf test: Add a new test for perf stat cgroup BPF counter

2022-09-21T13:30:55+00:00

  $ sudo ./perf test -v each-cgroup
   96: perf stat --bpf-counters --for-each-cgroup test                 :
  --- start ---
  test child forked, pid 79600
  test child finished with 0
  ---- end ----
  perf stat --bpf-counters --for-each-cgroup test: Ok

Signed-off-by: Namhyung Kim 
Cc: Adrian Hunter 
Cc: Ian Rogers 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Peter Zijlstra 
Cc: Song Liu 
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20220916184132.1161506-5-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf test: Stat test for repeat with a weak group

2022-08-27T14:55:17+00:00

Breaking a weak group requires multiple passes of an evlist, with
multiple runs this can introduce bugs ultimately leading to
segfaults. Add a test to cover this.

Signed-off-by: Ian Rogers 
Cc: Alexander Shishkin 
Cc: Andi Kleen 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Kan Liang 
Cc: Mark Rutland 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: https://lore.kernel.org/r/20220822213352.75721-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo

perf offcpu: Update offcpu test for child process

2022-08-11T20:57:45+00:00

Record off-cpu data with perf bench sched messaging workload and count
the number of offcpu-time events.  Also update the test script not to
run next tests if failed already and revise the error messages.

  $ sudo ./perf test offcpu -v
   88: perf record offcpu profiling tests                              :
  --- start ---
  test child forked, pid 344780
  Checking off-cpu privilege
  Basic off-cpu test
  Basic off-cpu test [Success]
  Child task off-cpu test
  Child task off-cpu test [Success]
  test child finished with 0
  ---- end ----
  perf record offcpu profiling tests: Ok

Signed-off-by: Namhyung Kim 
Cc: Blake Jones 
Cc: Hao Luo 
Cc: Ian Rogers 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Milian Wolff 
Cc: Peter Zijlstra 
Cc: Song Liu 
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20220811185456.194721-5-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf test: JSON format checking

2022-08-10T13:44:01+00:00

Add field checking tests for perf stat JSON output.

Sanity checks the expected number of fields are present, that the
expected keys are present and they have the correct values.

Committer notes:

Had to fix this:

  -               $(INSTALL) tests/shell/lib/*.sh '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/tests/shell/lib' \
  +               $(INSTALL) tests/shell/lib/*.sh '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/tests/shell/lib'; \

Committer testing:

  [root@quaco ~]# perf test json
   90: perf stat JSON output linter                                    : Ok
  [root@quaco ~]# set -o vi
  [root@quaco ~]# perf test -v json
   90: perf stat JSON output linter                                    :
  --- start ---
  test child forked, pid 560794
  Checking json output: no args [Success]
  Checking json output: system wide [Success]
  Checking json output: system wide Checking json output: system wide no aggregation [Success]
  Checking json output: interval [Success]
  Checking json output: event [Success]
  Checking json output: per core [Success]
  Checking json output: per thread [Success]
  Checking json output: per die [Success]
  Checking json output: per node [Success]
  Checking json output: per socket [Success]
  test child finished with 0
  ---- end ----
  perf stat JSON output linter: Ok
  [root@quaco ~]#

Signed-off-by: Claire Jensen 
Acked-by: Namhyung Kim 
Tested-by: Arnaldo Carvalho de Melo 
Cc: Alexander Shishkin 
Cc: Alyssa Ross 
Cc: Claire Jensen 
Cc: Florian Fischer 
Cc: Ingo Molnar 
Cc: James Clark 
Cc: Jiri Olsa 
Cc: Kan Liang 
Cc: Like Xu 
Cc: Mark Rutland 
Cc: Peter Zijlstra 
Cc: Sandipan Das 
Cc: Stephane Eranian 
Cc: Xing Zhengjun 
Link: https://lore.kernel.org/r/20220805200105.2020995-3-irogers@google.com
Signed-off-by: Ian Rogers 
Signed-off-by: Arnaldo Carvalho de Melo

perf test: Add ARM SPE system wide test

2022-08-01T17:46:30+00:00

In the past it had a problem not setting the pid/tid on the sample
correctly when system-wide mode is used.  Although it's fixed now it'd
be nice if we have a test case for it.

Reviewed-by: German Gomez 
Signed-off-by: Namhyung Kim 
Tested-by: Leo Yan 
Cc: German Gomez 
Cc: Ian Rogers 
Cc: Ingo Molnar 
Cc: James Clark 
Cc: Jiri Olsa 
Cc: John Garry 
Cc: Leo Yan 
Cc: Mike Leach 
Cc: Peter Zijlstra 
Cc: Will Deacon 
Link: https://lore.kernel.org/r/20220701230932.1000495-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf test: Fix test case 95 ("Check branch stack sampling") on s390 and use same event

2022-07-29T13:31:06+00:00

On linux-next tree 'perf test 95' ("Check branch stack sampling") was
added recently.

s390 does not support branch sampling at all and the test case fails
despite for checking branch support before hand.

The check for support of branching uses the software event named "dummy",
as seen in the line:

  perf record -b -o- -e dummy -B true > /dev/null 2>&1 || exit 2

However when the branch recording is actually done, a different event is
used, as seen in the line:

  perf record -o $TMPDIR/... --branch-filter any,save_type,u -- ...

The event is omitted and for "perf record" the default event is cycles,
which is not supported by s390 and this fails when executed on s390:

  # perf record --branch-filter any,save_type,u -- /tmp/__perf_test.program.iDSmQ/a.out
  Error:
  cycles: PMU Hardware or event type doesn't support branch stack sampling.
  #

Therefore fix this and use the same event cycles for testing support
and actually running the test.

Output before:

  # ./perf test -Fv 95
  95: Check branch stack sampling                                     :
  --- start ---
  Testing user branch stack sampling
  ---- end ----
  Check branch stack sampling: FAILED!
  #

Output after:

  # ./perf test -Fv 95
  95: Check branch stack sampling                                     :
  --- start ---
  ---- end ----
  Check branch stack sampling: Skip
  #

Fixes: b55878c90ab92a24 ("perf test: Add test for branch stack sampling")
Reviewed-by: James Clark 
Signed-off-by: Thomas Richter 
Acked-by: German Gomez 
Cc: German Gomez 
Cc: Heiko Carstens 
Cc: Sumanth Korikkar 
Cc: Sven Schnelle 
Cc: Vasily Gorbik 
Link: https://lore.kernel.org/r/20220727141439.712582-1-tmricht@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo

perf test: Fix test case 83 ('perf stat CSV output linter') on s390

2022-07-20T16:20:33+00:00

Perf test case 83: perf stat CSV output linter might fail
on s390.
The reason for this is the output of the command

 ./perf stat -x, -A -a --no-merge true

which depends on a .config file setting. When CONFIG_SCHED_TOPOLOGY
is set, the output of above perf command is

   CPU0,1.50,msec,cpu-clock,1502781,100.00,1.052,CPUs utilized

When CONFIG_SCHED_TOPOLOGY is *NOT* set the output of above perf
command is

   0.95,msec,cpu-clock,949800,100.00,1.060,CPUs utilized

Fix the test case to accept both output formats.

Output before:
 # perf test 83
 83: perf stat CSV output linter       : FAILED!
 #

Output after:
 # ./perf test 83
 83: perf stat CSV output linter       : Ok
 #

Fixes: ec906102e5b7d339 ("perf test: Fix "perf stat CSV output linter" test on s390")
Signed-off-by: Thomas Richter 
Acked-by: Ian Rogers 
Acked-by: Sumanth Korikkar 
Cc: Heiko Carstens 
Cc: Sven Schnelle 
Cc: Vasily Gorbik 
Link: https://lore.kernel.org/r/20220720123419.220953-1-tmricht@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo

perf test: Add test for branch stack sampling

2022-07-12T11:55:36+00:00

Add a self test for branch stack sampling, to check that we get the
expected branch types, and filters behave as expected.

Suggested-by: Anshuman Khandual 
Signed-off-by: German Gomez 
Acked-by: Namhyung Kim 
Cc: Alexander Shishkin 
Cc: Ian Rogers 
Cc: Mark Rutland 
Link: https://lore.kernel.org/r/20220705150511.473919-2-german.gomez@arm.com
Tested-by: Jiri Olsa 
Signed-off-by: Arnaldo Carvalho de Melo