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Ian Rogers
880a784344
Add test that a sibling with leader sampling doesn't have its period cleared. Signed-off-by: Ian Rogers <[email protected]> Acked-by: Jiri Olsa <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Andrii Nakryiko <[email protected]> Cc: Athira Jajeev <[email protected]> Cc: Daniel Borkmann <[email protected]> Cc: John Fastabend <[email protected]> Cc: KP Singh <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Martin KaFai Lau <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Song Liu <[email protected]> Cc: Stephane Eranian <[email protected]> Cc: Yonghong Song <[email protected]> Cc: [email protected] Cc: [email protected] Link: http://lore.kernel.org/lkml/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
67 lines
3.5 KiB
Plaintext
67 lines
3.5 KiB
Plaintext
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 --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 --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 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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