linux-dev/tools/perf/tests/shell, branch linus/master

perf test: Record only user callchains on the "Check Arm64 callgraphs are complete in fp mode" test

2022-06-19T13:41:43Z

The testcase 'Check Arm64 callgraphs are complete in fp mode' wants to see the following output: 610 leaf 62f parent 648 main However, without excluding kernel callchains, the output might look like: ffffc2ff40ef1b5c arch_local_irq_enable ffffc2ff419d032c __schedule ffffc2ff419d06c0 schedule ffffc2ff40e4da30 do_notify_resume ffffc2ff40e421b0 work_pending 610 leaf 62f parent 648 main Adding '--user-callchains' leaves only the wanted symbols in the chain. Fixes: cd6382d82752737e ("perf test arm64: Test unwinding using fame-pointer (fp) mode") Suggested-by: German Gomez Reviewed-by: German Gomez Reviewed-by: Leo Yan Signed-off-by: Michael Petlan Cc: German Gomez Cc: Jiri Olsa Link: https://lore.kernel.org/r/20220614105207.26223-1-mpetlan@redhat.com Signed-off-by: Arnaldo Carvalho de Melo

perf test: Fix "perf stat CSV output linter" test on s390

2022-06-19T13:41:43Z

perf test -F 83 ("perf stat CSV output linter") fails on s390. Reason is the wrong number of fields for certain CPU core/die/socket related output. On x84_64 the output of command: # ./perf stat -x, -A -a --no-merge true CPU0,1.50,msec,cpu-clock,1502781,100.00,1.052,CPUs utilized CPU1,1.48,msec,cpu-clock,1476113,100.00,1.034,CPUs utilized ... results in 8 fields with 7 comma separators. On s390 the output of command: # ./perf stat -x, -A -a --no-merge -- true 0.95,msec,cpu-clock,949800,100.00,1.060,CPUs utilized ... results in 7 fields with 6 comma separators. Therefore this tests fails on s390. Similar issues exist for per-die and per-socket output which is not supported on s390. I have rewritten the python program to count commas in each output line into a bash function to achieve the same result. I hope this makes it a bit easier. Output before: # ./perf test -F 83 83: perf stat CSV output linter : Checking CSV output: no args [Success] Checking CSV output: system wide [Success] Checking CSV output: system wide Checking CSV output: \ system wide no aggregation 6.92,msec,cpu-clock,\ 6918131,100.00,6.972,CPUs utilized ... RuntimeError: wrong number of fields. expected 7 in \ 6.92,msec,cpu-clock,6918131,100.00,6.972,CPUs utilized FAILED! # Output after: # ./perf test -F 83 83: perf stat CSV output linter : Checking CSV output: no args [Success] Checking CSV output: system wide [Success] Checking CSV output: system wide Checking CSV output:\ system wide no aggregation [Success] Checking CSV output: interval [Success] Checking CSV output: event [Success] Checking CSV output: per core [Success] Checking CSV output: per thread [Success] Checking CSV output: per die [Success] Checking CSV output: per node [Success] Checking CSV output: per socket [Success] Ok # Committer notes: Continues to work on x86_64 $ perf test lint 89: perf stat CSV output linter : Ok $ perf test -v lint Couldn't bump rlimit(MEMLOCK), failures may take place when creating BPF maps, etc 89: perf stat CSV output linter : --- start --- test child forked, pid 53133 Checking CSV output: no args [Success] Checking CSV output: system wide [Skip] paranoid and not root Checking CSV output: system wide [Skip] paranoid and not root Checking CSV output: interval [Success] Checking CSV output: event [Success] Checking CSV output: per core [Skip] paranoid and not root Checking CSV output: per thread [Skip] paranoid and not root Checking CSV output: per die [Skip] paranoid and not root Checking CSV output: per node [Skip] paranoid and not root Checking CSV output: per socket [Skip] paranoid and not root test child finished with 0 ---- end ---- perf stat CSV output linter: Ok $ Signed-off-by: Thomas Richter Acked-by: Ian Rogers Tested-by: Arnaldo Carvalho de Melo Cc: Claire Jensen Cc: Heiko Carstens Cc: Sumanth Korikkar Cc: Sven Schnelle Cc: Vasily Gorbik Cc: linux390-list@tuxmaker.boeblingen.de.ibm.com Link: https://lore.kernel.org/r/20220603113034.2009728-1-tmricht@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo

perf test arm-spe: Check if perf-record hangs when recording workload with forks

2022-06-03T19:18:35Z

Add shell test to check if perf-record hangs when recording an arm_spe event with forks. The test FAILS if the Kernel is not patched with Commit 961c391217 ("perf: Always wake the parent event"). Unpatched Kernel: $ perf test -v 90 90: Check Arm SPE doesn't hang when there are forks --- start --- test child forked, pid 14232 Recording workload with fork Log lines = 90 /tmp/__perf_test.stderr.0Nu0U Log lines after 1 second = 90 /tmp/__perf_test.stderr.0Nu0U SPE hang test: FAIL test child finished with -1 ---- end ---- Check Arm SPE trace data in workload with forks: FAILED! Patched Kernel: $ perf test -v 90 90: Check Arm SPE doesn't hang when there are forks --- start --- test child forked, pid 2930 Compiling test program... Recording workload... Log lines = 478 /tmp/__perf_test.log.026AI Log lines after 1 second = 557 /tmp/__perf_test.log.026AI SPE hang test: PASS Cleaning up files... test child finished with 0 ---- end ---- Check Arm SPE trace data in workload with forks: Ok Reviewed-by: James Clark Reviewed-by: Leo Yan Signed-off-by: German Gomez Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Link: https://lore.kernel.org/r/20220228165655.3920-1-german.gomez@arm.com Signed-off-by: Arnaldo Carvalho de Melo

perf test: Add a basic offcpu profiling test

2022-05-26T15:36:58Z

$ sudo ./perf test -v offcpu 88: perf record offcpu profiling tests : --- start --- test child forked, pid 685966 Basic off-cpu test Basic off-cpu test [Success] test child finished with 0 ---- end ---- perf record offcpu profiling tests: Ok Signed-off-by: Namhyung Kim Tested-by: Arnaldo Carvalho de Melo Acked-by: Ian Rogers Cc: Andi Kleen Cc: Blake Jones Cc: Hao Luo 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/20220518224725.742882-7-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf test: Add checking for perf stat CSV output.

2022-05-26T15:36:57Z

Counts expected fields for various commands. No testing added for summary mode since it is broken. An example of the summary output is: summary,263831,,instructions:u,1435072,100.0,0.46,insn per cycle ,,,,,1.37,stalled cycles per insn This should be: summary,263831,,instructions:u,1435072,100.0,0.46,insn per cycle summary,,,,,,1.37,stalled cycles per insn The output has 7 fields when it should have 8. Additionally, the newline spacing is wrong, so it was excluded from testing until a fix is made. Committer testing: $ perf test "perf stat CSV output" 88: perf stat CSV output linter : Ok $ $ perf test -v "perf stat CSV output" Couldn't bump rlimit(MEMLOCK), failures may take place when creating BPF maps, etc 88: perf stat CSV output linter : --- start --- test child forked, pid 2622839 Checking CSV output: no args [Success] Checking CSV output: system wide [Skip] paranoid and not root Checking CSV output: system wide [Skip] paranoid and not root Checking CSV output: interval [Success] Checking CSV output: event [Success] Checking CSV output: per core [Skip] paranoid and not root Checking CSV output: per thread [Skip] paranoid and not root Checking CSV output: per die [Skip] paranoid and not root Checking CSV output: per node [Skip] paranoid and not root Checking CSV output: per socket [Skip] paranoid and not root test child finished with 0 ---- end ---- perf stat CSV output linter: Ok $ I did a s/parnoia/paranoid/g on the [Skip] lines. Signed-off-by: Claire Jensen 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: Namhyung Kim Cc: Peter Zijlstra Cc: Sandipan Das Cc: Stephane Eranian Cc: Xing Zhengjun Link: https://lore.kernel.org/r/20220525053814.3265216-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo

perf intel-pt: Add a test for system-wide side band

2022-05-26T15:36:56Z

Add a test for system-wide side band even when tracing selected CPUs. The test fails before the patches up to "perf tools: Allow system-wide events to keep their own CPUs" are applied, passes afterwards. Signed-off-by: Adrian Hunter Tested-by: Ian Rogers Acked-by: Ian Rogers Acked-by: Namhyung Kim Cc: Alexey Bayduraev Cc: Jiri Olsa Cc: Leo Yan Link: https://lore.kernel.org/r/20220524075436.29144-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf stat: Add stat record+report test

2022-05-23T12:51:55Z

This would have caught: "Subject: Re: perf stat report segfaults" https://lore.kernel.org/linux-perf-users/CAP-5=fWQR=sCuiSMktvUtcbOLidEpUJLCybVF6=BRvORcDOq+g@mail.gmail.com/ Signed-off-by: Ian Rogers Cc: Alexander Shishkin Cc: Alexei Starovoitov Cc: Andrii Nakryiko Cc: Daniel Borkmann Cc: Dave Marchevsky Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Fastabend Cc: KP Singh Cc: Kan Liang Cc: Lv Ruyi Cc: Mark Rutland Cc: Martin KaFai Lau Cc: Michael Petlan Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Quentin Monnet Cc: Song Liu Cc: Stephane Eranian Cc: Xing Zhengjun Cc: Yonghong Song Cc: bpf@vger.kernel.org Cc: netdev@vger.kernel.org Link: https://lore.kernel.org/r/20220519032005.1273691-3-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo

Merge remote-tracking branch 'torvalds/master' into perf/core

2022-05-23T12:32:49Z

To get the rest of 5.18. Signed-off-by: Arnaldo Carvalho de Melo

perf test: Fix "all PMU test" to skip hv_24x7/hv_gpci tests on powerpc

2022-05-21T17:45:06Z

"perf all PMU test" picks the input events from "perf list --raw-dump pmu" list and runs "perf stat -e" for each of the event in the list. In case of powerpc, the PowerVM environment supports events from hv_24x7 and hv_gpci PMU which is of example format like below: - hv_24x7/CPM_ADJUNCT_INST,domain=?,core=?/ - hv_gpci/event,partition_id=?/ The value for "?" needs to be filled in depending on system and respective event. CPM_ADJUNCT_INST needs have core value and domain value. hv_gpci event needs partition_id. Similarly, there are other events for hv_24x7 and hv_gpci having "?" in event format. Hence skip these events on powerpc platform since values like partition_id, domain is specific to system and event. Fixes: 3d5ac9effcc640d5 ("perf test: Workload test of all PMUs") Signed-off-by: Athira Jajeev Acked-by: Ian Rogers Cc: Disha Goel Cc: Jiri Olsa Cc: Kajol Jain Cc: linuxppc-dev@lists.ozlabs.org Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Nageswara R Sastry Link: https://lore.kernel.org/r/20220520101236.17249-1-atrajeev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo

perf test: Add basic stat and topdown group test

2022-05-17T15:02:30Z

Add a basic stat test. Add two tests of grouping behavior for topdown events. Topdown events are special as they must be grouped with the slots event first. Reviewed-by: Kan Liang Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Andi Kleen Cc: Florian Fischer Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Kim Phillips Cc: Madhavan Srinivasan Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Riccardo Mancini Cc: Shunsuke Nakamura Cc: Stephane Eranian Cc: Xing Zhengjun Link: https://lore.kernel.org/r/20220517052724.283874-3-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo