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Date: Thu, 28 Oct 2021 16:52:13 -0700
From: Ian Rogers <irogers@...gle.com>
To: Jiri Olsa <jolsa@...hat.com>
Cc: Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Namhyung Kim <namhyung@...nel.org>,
Jin Yao <yao.jin@...ux.intel.com>,
John Garry <john.garry@...wei.com>,
"Paul A . Clarke" <pc@...ibm.com>,
linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
Brendan Higgins <brendanhiggins@...gle.com>,
Daniel Latypov <dlatypov@...gle.com>,
David Gow <davidgow@...gle.com>, eranian@...gle.com
Subject: Re: [PATCH v2 00/22] Start aligning perf test with kunit style
On Wed, Oct 20, 2021 at 8:51 AM Ian Rogers <irogers@...gle.com> wrote:
>
> On Wed, Oct 20, 2021 at 5:14 AM Jiri Olsa <jolsa@...hat.com> wrote:
> >
> > On Wed, Oct 13, 2021 at 10:45:42AM -0700, Ian Rogers wrote:
> > > Perf test uses its own structs and code layout that differs from kunit
> > > that was more recently introduced to the kernel. Besides consistency,
> > > it is hoped that moving in the direction of kunit style will enable
> > > reuse of infrastructure like test output formatting for continuous
> > > testing systems. For example:
> > > https://lore.kernel.org/linux-kselftest/CA+GJov6tdjvY9x12JsJT14qn6c7NViJxqaJk+r-K1YJzPggFDQ@mail.gmail.com/
> > >
> > > The motivation for this restructuring comes from wanting to be able to
> > > tag tests with a size:
> > > https://lore.kernel.org/linux-perf-users/CAP-5=fWmGyuqFKc-EMP3rbmTkjZ3MS+YSajGZfeRMc38HS82gw@mail.gmail.com/
> > > To have more exhaustive and slower running tests. This isn't
> > > something kunit currently supports, nor is the execution of python and
> > > shell tests, but it seems sensible to work on an approach with kunit
> > > rather to invent a new wheel inside of perf.
> > >
> > > These initial patches are just refactoring the main test suite
> > > definitions to be in a more kunit style. Kunit isn't depended upon, it
> > > is hoped that this can be done in later patches for the sake of
> > > consistency.
> > >
> > > v2. Gets to a point of the perf test test suite/case structs being
> > > close facsimiles of the kunit ones. It also addresses feedback on
> > > the v1 RFC, in particular from Jiri Olsa <jolsa@...hat.com>.
> >
> > hi,
> > when I compile with DEBUG=1 it's ok, but with just make:
> >
> > [root@...va perf]# ./perf test
> > Segmentation fault (core dumped)
> > [root@...va perf]# gdb ./perf
> > GNU gdb (GDB) Fedora 10.2-4.fc33
> > Copyright (C) 2021 Free Software Foundation, Inc.
> > License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
> > This is free software: you are free to change and redistribute it.
> > There is NO WARRANTY, to the extent permitted by law.
> > Type "show copying" and "show warranty" for details.
> > This GDB was configured as "x86_64-redhat-linux-gnu".
> > Type "show configuration" for configuration details.
> > For bug reporting instructions, please see:
> > <https://www.gnu.org/software/gdb/bugs/>.
> > Find the GDB manual and other documentation resources online at:
> > <http://www.gnu.org/software/gdb/documentation/>.
> >
> > For help, type "help".
> > Type "apropos word" to search for commands related to "word"...
> > Reading symbols from ./perf...
> > (gdb) r test
> > Starting program: /home/jolsa/kernel/linux-perf/tools/perf/perf test
> > [Thread debugging using libthread_db enabled]
> > Using host libthread_db library "/lib64/libthread_db.so.1".
> >
> > Program received signal SIGSEGV, Segmentation fault.
> > __strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:96
> > 96 VPCMPEQ (%rdi), %ymm0, %ymm1
> > Missing separate debuginfos, use: dnf debuginfo-install bzip2-libs-1.0.8-4.fc33.x86_64 cyrus-sasl-lib-2.1.27-6.fc33.x86_64 elfutils-debuginfod-client-0.185-2.fc33.x86_64 elfutils-libelf-0.185-2.fc33.x86_64 elfutils-libs-0.185-2.fc33.x86_64 keyutils-libs-1.6.1-1.fc33.x86_64 krb5-libs-1.18.2-31.fc33.x86_64 libbabeltrace-1.5.8-3.fc33.x86_64 libbrotli-1.0.9-3.fc33.x86_64 libcap-2.48-2.fc33.x86_64 libcom_err-1.45.6-4.fc33.x86_64 libgcc-10.3.1-1.fc33.x86_64 libidn2-2.3.2-1.fc33.x86_64 libnghttp2-1.43.0-1.fc33.x86_64 libpsl-0.21.1-2.fc33.x86_64 libselinux-3.1-2.fc33.x86_64 libssh-0.9.6-1.fc33.x86_64 libunistring-0.9.10-9.fc33.x86_64 libunwind-1.4.0-4.fc33.x86_64 libuuid-2.36.1-1.fc33.x86_64 libxcrypt-4.4.26-2.fc33.x86_64 numactl-libs-2.0.14-1.fc33.x86_64 openldap-2.4.50-5.fc33.x86_64 openssl-libs-1.1.1l-2.fc33.x86_64 pcre-8.44-2.fc33.x86_64 perl-libs-5.32.1-471.fc33.x86_64 popt-1.18-2.fc33.x86_64 python2.7-2.7.18-15.fc33.x86_64 slang-2.3.2-8.fc33.x86_64 xz-libs-5.2.5-4.fc33.x86_64 zlib-1.2.11-23.fc33.x86_64
> > (gdb) bt
> > #0 __strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:96
> > #1 0x00000000004a3848 in __cmd_test (skiplist=0x0, argv=0x7fffffffd6c0, argc=0) at tests/builtin-test.c:150
> > #2 cmd_test (argc=0, argv=0x7fffffffd6c0) at tests/builtin-test.c:628
> > #3 0x00000000004cc47b in run_builtin (p=p@...ry=0xa7cda8 <commands+552>, argc=argc@...ry=1, argv=argv@...ry=0x7fffffffd6c0) at perf.c:313
> > #4 0x00000000004397ae in handle_internal_command (argv=0x7fffffffd6c0, argc=1) at perf.c:365
> > #5 run_argv (argv=<synthetic pointer>, argcp=<synthetic pointer>) at perf.c:409
> > #6 main (argc=1, argv=0x7fffffffd6c0) at perf.c:539
> > (gdb)
>
> Thanks, I'll take a look.
I wasn't able to reproduce this, I tried with gcc-10 on each patch
individually, debug disabled and O3. I can send a v3 patch set, but
currently it is just a rebase of v2.
Thanks,
Ian
> > also during the metric test (in make DEBUG=1 build) it runs the
> > perf bench synthesize and it takes forever ;-)
> >
> > 89: perf all metrics test
> >
> > that might be another patchset I haven't checked,
> > but I thought we already agreed not to do that ;-)
>
> The PMU test was merged, and that may be the very slow running one.
> The metric tests run with /bin/true, but if they get "not counted" in
> the output they try again with perf bench. It generally runs in
> O(seconds) for me, but maybe it is slower on a loaded machine. There
> may be some middle sized thing between "perf bench" and true that
> gives us enough counts for the tests.
>
> Thanks,
> Ian
>
> > jirka
> >
> > >
> > > v1. Built/tested on x86.
> > >
> > > Ian Rogers (22):
> > > perf test: Use macro for "suite" declarations
> > > perf test: Use macro for "suite" definitions
> > > perf test: Make each test/suite its own struct.
> > > perf test: Move each test suite struct to its test
> > > perf test: Rename struct test to test_suite
> > > perf test: Add helper functions for abstraction.
> > > perf test: Add test case struct.
> > > perf test: Add skip reason to test case.
> > > perf test: Convert pfm tests to use test cases.
> > > perf test: Convert pmu event tests to test cases.
> > > perf test: Convert watch point tests to test cases.
> > > perf test: Convert clang tests to test cases.
> > > perf test: Convert bpf tests to test cases.
> > > perf test: Convert llvm tests to test cases.
> > > perf test: Remove now unused subtest helpers
> > > perf test: bp tests use test case
> > > perf test: Convert time to tsc test to test case.
> > > perf test: Remove non test case style support.
> > > perf test: BP tests, remove is_supported use
> > > perf test: TSC test, remove is_supported use
> > > perf test: Remove is_supported function
> > > perf test: Remove skip_if_fail
> > >
> > > tools/perf/arch/arm/include/arch-tests.h | 2 +-
> > > tools/perf/arch/arm/tests/arch-tests.c | 18 +-
> > > tools/perf/arch/arm/tests/vectors-page.c | 2 +-
> > > tools/perf/arch/arm64/include/arch-tests.h | 2 +-
> > > tools/perf/arch/arm64/tests/arch-tests.c | 11 +-
> > > tools/perf/arch/powerpc/include/arch-tests.h | 2 +-
> > > tools/perf/arch/powerpc/tests/arch-tests.c | 12 +-
> > > tools/perf/arch/x86/include/arch-tests.h | 14 +-
> > > tools/perf/arch/x86/tests/arch-tests.c | 46 +-
> > > tools/perf/arch/x86/tests/bp-modify.c | 2 +-
> > > tools/perf/arch/x86/tests/insn-x86.c | 2 +-
> > > tools/perf/arch/x86/tests/intel-cqm.c | 2 +-
> > > .../x86/tests/intel-pt-pkt-decoder-test.c | 2 +-
> > > tools/perf/arch/x86/tests/rdpmc.c | 2 +-
> > > tools/perf/arch/x86/tests/sample-parsing.c | 2 +-
> > > tools/perf/tests/api-io.c | 6 +-
> > > tools/perf/tests/attr.c | 4 +-
> > > tools/perf/tests/backward-ring-buffer.c | 4 +-
> > > tools/perf/tests/bitmap.c | 4 +-
> > > tools/perf/tests/bp_account.c | 36 +-
> > > tools/perf/tests/bp_signal.c | 34 +-
> > > tools/perf/tests/bp_signal_overflow.c | 9 +-
> > > tools/perf/tests/bpf.c | 69 ++-
> > > tools/perf/tests/builtin-test.c | 578 ++++++------------
> > > tools/perf/tests/clang.c | 54 +-
> > > tools/perf/tests/code-reading.c | 4 +-
> > > tools/perf/tests/cpumap.c | 10 +-
> > > tools/perf/tests/demangle-java-test.c | 4 +-
> > > tools/perf/tests/demangle-ocaml-test.c | 4 +-
> > > tools/perf/tests/dlfilter-test.c | 4 +-
> > > tools/perf/tests/dso-data.c | 10 +-
> > > tools/perf/tests/dwarf-unwind.c | 5 +-
> > > tools/perf/tests/event-times.c | 4 +-
> > > tools/perf/tests/event_update.c | 4 +-
> > > tools/perf/tests/evsel-roundtrip-name.c | 5 +-
> > > tools/perf/tests/evsel-tp-sched.c | 5 +-
> > > tools/perf/tests/expand-cgroup.c | 6 +-
> > > tools/perf/tests/expr.c | 4 +-
> > > tools/perf/tests/fdarray.c | 7 +-
> > > tools/perf/tests/genelf.c | 6 +-
> > > tools/perf/tests/hists_cumulate.c | 4 +-
> > > tools/perf/tests/hists_filter.c | 4 +-
> > > tools/perf/tests/hists_link.c | 4 +-
> > > tools/perf/tests/hists_output.c | 4 +-
> > > tools/perf/tests/is_printable_array.c | 4 +-
> > > tools/perf/tests/keep-tracking.c | 4 +-
> > > tools/perf/tests/kmod-path.c | 4 +-
> > > tools/perf/tests/llvm.c | 74 ++-
> > > tools/perf/tests/maps.c | 4 +-
> > > tools/perf/tests/mem.c | 4 +-
> > > tools/perf/tests/mem2node.c | 4 +-
> > > tools/perf/tests/mmap-basic.c | 4 +-
> > > tools/perf/tests/mmap-thread-lookup.c | 4 +-
> > > tools/perf/tests/openat-syscall-all-cpus.c | 5 +-
> > > tools/perf/tests/openat-syscall-tp-fields.c | 5 +-
> > > tools/perf/tests/openat-syscall.c | 5 +-
> > > tools/perf/tests/parse-events.c | 4 +-
> > > tools/perf/tests/parse-metric.c | 4 +-
> > > tools/perf/tests/parse-no-sample-id-all.c | 5 +-
> > > tools/perf/tests/pe-file-parsing.c | 6 +-
> > > tools/perf/tests/perf-hooks.c | 4 +-
> > > tools/perf/tests/perf-record.c | 4 +-
> > > tools/perf/tests/perf-time-to-tsc.c | 30 +-
> > > tools/perf/tests/pfm.c | 63 +-
> > > tools/perf/tests/pmu-events.c | 73 +--
> > > tools/perf/tests/pmu.c | 4 +-
> > > tools/perf/tests/python-use.c | 4 +-
> > > tools/perf/tests/sample-parsing.c | 4 +-
> > > tools/perf/tests/sdt.c | 6 +-
> > > tools/perf/tests/stat.c | 11 +-
> > > tools/perf/tests/sw-clock.c | 4 +-
> > > tools/perf/tests/switch-tracking.c | 4 +-
> > > tools/perf/tests/task-exit.c | 4 +-
> > > tools/perf/tests/tests.h | 238 ++++----
> > > tools/perf/tests/thread-map.c | 10 +-
> > > tools/perf/tests/thread-maps-share.c | 4 +-
> > > tools/perf/tests/time-utils-test.c | 4 +-
> > > tools/perf/tests/topology.c | 4 +-
> > > tools/perf/tests/unit_number__scnprintf.c | 4 +-
> > > tools/perf/tests/vmlinux-kallsyms.c | 5 +-
> > > tools/perf/tests/wp.c | 122 +---
> > > tools/perf/util/c++/clang-c.h | 8 +-
> > > tools/perf/util/c++/clang-test.cpp | 6 +-
> > > 83 files changed, 811 insertions(+), 966 deletions(-)
> > >
> > > --
> > > 2.33.0.882.g93a45727a2-goog
> > >
> >
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