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3b9a8c8b9a
Adds a perf_event_attr test for Arm SPE in which the presence of physical addresses are checked when SPE unit is run with pa_enable=1. Reviewed-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Timothy Hayes <timothy.hayes@arm.com> Tested-by: Leo Yan <leo.yan@linaro.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Fastabend <john.fastabend@gmail.com> Cc: John Garry <john.garry@huawei.com> Cc: KP Singh <kpsingh@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Martin KaFai Lau <kafai@fb.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: Will Deacon <will@kernel.org> Cc: Yonghong Song <yhs@fb.com> Cc: bpf@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: netdev@vger.kernel.org Link: https://lore.kernel.org/r/20220421165205.117662-4-timothy.hayes@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
71 lines
3.9 KiB
Text
71 lines
3.9 KiB
Text
The struct perf_event_attr test (attr tests) support
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====================================================
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This testing support is embedded into perf directly and is governed
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by the PERF_TEST_ATTR environment variable and hook inside the
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sys_perf_event_open function.
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The general idea is to store 'struct perf_event_attr' details for
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each event created within single perf command. Each event details
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are stored into separate text file. Once perf command is finished
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these files are checked for values we expect for command.
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The attr tests consist of following parts:
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tests/attr.c
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------------
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This is the sys_perf_event_open hook implementation. The hook
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is triggered when the PERF_TEST_ATTR environment variable is
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defined. It must contain name of existing directory with access
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and write permissions.
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For each sys_perf_event_open call event details are stored in
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separate file. Besides 'struct perf_event_attr' values we also
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store 'fd' and 'group_fd' values to allow checking for groups.
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tests/attr.py
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-------------
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This is the python script that does all the hard work. It reads
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the test definition, executes it and checks results.
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tests/attr/
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-----------
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Directory containing all attr test definitions.
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Following tests are defined (with perf commands):
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perf record kill (test-record-basic)
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perf record -b kill (test-record-branch-any)
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perf record -j any kill (test-record-branch-filter-any)
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perf record -j any_call kill (test-record-branch-filter-any_call)
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perf record -j any_ret kill (test-record-branch-filter-any_ret)
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perf record -j hv kill (test-record-branch-filter-hv)
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perf record -j ind_call kill (test-record-branch-filter-ind_call)
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perf record -j k kill (test-record-branch-filter-k)
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perf record -j u kill (test-record-branch-filter-u)
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perf record -c 123 kill (test-record-count)
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perf record -d kill (test-record-data)
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perf record -F 100 kill (test-record-freq)
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perf record -g kill (test-record-graph-default)
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perf record -g kill (test-record-graph-default-aarch64)
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perf record --call-graph dwarf kill (test-record-graph-dwarf)
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perf record --call-graph fp kill (test-record-graph-fp)
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perf record --call-graph fp kill (test-record-graph-fp-aarch64)
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perf record --group -e cycles,instructions kill (test-record-group)
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perf record -e '{cycles,instructions}' kill (test-record-group1)
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perf record -e '{cycles/period=1/,instructions/period=2/}:S' kill (test-record-group2)
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perf record -D kill (test-record-no-delay)
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perf record -i kill (test-record-no-inherit)
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perf record -n kill (test-record-no-samples)
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perf record -c 100 -P kill (test-record-period)
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perf record -c 1 --pfm-events=cycles:period=2 (test-record-pfm-period)
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perf record -R kill (test-record-raw)
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perf record -c 2 -e arm_spe_0// -- kill (test-record-spe-period)
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perf record -e arm_spe_0/period=3/ -- kill (test-record-spe-period-term)
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perf record -e arm_spe_0/pa_enable=1/ -- kill (test-record-spe-physical-address)
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perf stat -e cycles kill (test-stat-basic)
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perf stat kill (test-stat-default)
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perf stat -d kill (test-stat-detailed-1)
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perf stat -dd kill (test-stat-detailed-2)
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perf stat -ddd kill (test-stat-detailed-3)
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perf stat --group -e cycles,instructions kill (test-stat-group)
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perf stat -e '{cycles,instructions}' kill (test-stat-group1)
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perf stat -i -e cycles kill (test-stat-no-inherit)
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