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Date: Wed, 16 Feb 2022 10:36:49 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: German Gomez <german.gomez@....com>
Cc: linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...hat.com>,
Namhyung Kim <namhyung@...nel.org>,
Martin KaFai Lau <kafai@...com>,
Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
John Fastabend <john.fastabend@...il.com>,
KP Singh <kpsingh@...nel.org>,
James Clark <james.clark@....com>,
Arnaldo Carvalho de Melo <acme@...hat.com>,
Alexandre Truong <alexandre.truong@....com>,
netdev@...r.kernel.org, bpf@...r.kernel.org, irogers@...gle.com
Subject: Re: [PATCH] perf test: update arm64 perf_event_attr tests for
--call-graph
Em Wed, Feb 16, 2022 at 01:17:56PM +0000, German Gomez escreveu:
> Hi,
>
> Friendly ping on this perf-test fix for arm64
> I will include some quick test notes:
Thanks, adding it to the cset, applying.
- Arnaldo
> Before:
> $ ./perf test 17 -v
> 17: Setup struct perf_event_attr
> [...]
> running './tests/attr/test-record-graph-default'
> expected sample_type=295, got 4391
> expected sample_regs_user=0, got 1073741824
> FAILED './tests/attr/test-record-graph-default' - match failure
> test child finished with -1
> ---- end ----
>
> After:
>
> [...]
> running './tests/attr/test-record-graph-default-aarch64'
> test limitation 'aarch64'
> running './tests/attr/test-record-graph-fp-aarch64'
> test limitation 'aarch64'
> running './tests/attr/test-record-graph-default'
> test limitation '!aarch64'
> excluded architecture list ['aarch64']
> skipped [aarch64] './tests/attr/test-record-graph-default'
> running './tests/attr/test-record-graph-fp'
> test limitation '!aarch64'
> excluded architecture list ['aarch64']
> skipped [aarch64] './tests/attr/test-record-graph-fp'
> [...]
>
> Thanks,
> German
>
> On 25/01/2022 10:44, German Gomez wrote:
> > The struct perf_event_attr is initialised differently in Arm64 when
> > recording in call-graph fp mode, so update the relevant tests, and add
> > two extra arm64-only tests.
> >
> > Fixes: 7248e308a575 ("perf tools: Record ARM64 LR register automatically")
> > Signed-off-by: German Gomez <german.gomez@....com>
> > ---
> > tools/perf/tests/attr/README | 2 ++
> > tools/perf/tests/attr/test-record-graph-default | 2 ++
> > tools/perf/tests/attr/test-record-graph-default-aarch64 | 9 +++++++++
> > tools/perf/tests/attr/test-record-graph-fp | 2 ++
> > tools/perf/tests/attr/test-record-graph-fp-aarch64 | 9 +++++++++
> > 5 files changed, 24 insertions(+)
> > create mode 100644 tools/perf/tests/attr/test-record-graph-default-aarch64
> > create mode 100644 tools/perf/tests/attr/test-record-graph-fp-aarch64
> >
> > diff --git a/tools/perf/tests/attr/README b/tools/perf/tests/attr/README
> > index a36f49fb4dbe..1116fc6bf2ac 100644
> > --- a/tools/perf/tests/attr/README
> > +++ b/tools/perf/tests/attr/README
> > @@ -45,8 +45,10 @@ Following tests are defined (with perf commands):
> > 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 -g kill (test-record-graph-default-aarch64)
> > perf record --call-graph dwarf kill (test-record-graph-dwarf)
> > perf record --call-graph fp kill (test-record-graph-fp)
> > + perf record --call-graph fp kill (test-record-graph-fp-aarch64)
> > 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)
> > diff --git a/tools/perf/tests/attr/test-record-graph-default b/tools/perf/tests/attr/test-record-graph-default
> > index 5d8234d50845..f0a18b4ea4f5 100644
> > --- a/tools/perf/tests/attr/test-record-graph-default
> > +++ b/tools/perf/tests/attr/test-record-graph-default
> > @@ -2,6 +2,8 @@
> > command = record
> > args = --no-bpf-event -g kill >/dev/null 2>&1
> > ret = 1
> > +# arm64 enables registers in the default mode (fp)
> > +arch = !aarch64
> >
> > [event:base-record]
> > sample_type=295
> > diff --git a/tools/perf/tests/attr/test-record-graph-default-aarch64 b/tools/perf/tests/attr/test-record-graph-default-aarch64
> > new file mode 100644
> > index 000000000000..e98d62efb6f7
> > --- /dev/null
> > +++ b/tools/perf/tests/attr/test-record-graph-default-aarch64
> > @@ -0,0 +1,9 @@
> > +[config]
> > +command = record
> > +args = --no-bpf-event -g kill >/dev/null 2>&1
> > +ret = 1
> > +arch = aarch64
> > +
> > +[event:base-record]
> > +sample_type=4391
> > +sample_regs_user=1073741824
> > diff --git a/tools/perf/tests/attr/test-record-graph-fp b/tools/perf/tests/attr/test-record-graph-fp
> > index 5630521c0b0f..a6e60e839205 100644
> > --- a/tools/perf/tests/attr/test-record-graph-fp
> > +++ b/tools/perf/tests/attr/test-record-graph-fp
> > @@ -2,6 +2,8 @@
> > command = record
> > args = --no-bpf-event --call-graph fp kill >/dev/null 2>&1
> > ret = 1
> > +# arm64 enables registers in fp mode
> > +arch = !aarch64
> >
> > [event:base-record]
> > sample_type=295
> > diff --git a/tools/perf/tests/attr/test-record-graph-fp-aarch64 b/tools/perf/tests/attr/test-record-graph-fp-aarch64
> > new file mode 100644
> > index 000000000000..cbeea9971285
> > --- /dev/null
> > +++ b/tools/perf/tests/attr/test-record-graph-fp-aarch64
> > @@ -0,0 +1,9 @@
> > +[config]
> > +command = record
> > +args = --no-bpf-event --call-graph fp kill >/dev/null 2>&1
> > +ret = 1
> > +arch = aarch64
> > +
> > +[event:base-record]
> > +sample_type=4391
> > +sample_regs_user=1073741824
--
- Arnaldo
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