kernel/linux.git/tools/perf/tests/attr, branch v6.1.168

perf test: Fix attr tests for PERF_FORMAT_LOST

2022-10-15T13:13:16+00:00

Since PERF_FORMAT_LOST was added, the default read format has that bit set, so add it to the tests. Keep the old value as well so that the test still passes on older kernels. This fixes the following failure: expected read_format=0|4, got 20 FAILED './tests/attr/test-record-C0' - match failure Fixes: 85b425f31c8866e0 ("perf record: Set PERF_FORMAT_LOST by default") Signed-off-by: James Clark Acked-by: Namhyung Kim Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Ingo Molnar Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20221012094633.21669-2-james.clark@arm.com Signed-off-by: Arnaldo Carvalho de Melo

perf test: Add perf_event_attr test for Arm SPE

2022-04-28T13:40:49+00:00

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 Signed-off-by: Timothy Hayes Tested-by: Leo Yan Cc: Alexander Shishkin Cc: Jiri Olsa Cc: John Fastabend Cc: John Garry Cc: KP Singh Cc: Mark Rutland Cc: Martin KaFai Lau Cc: Mathieu Poirier Cc: Namhyung Kim Cc: Song Liu Cc: Will Deacon Cc: Yonghong Song 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

perf test: Add perf_event_attr tests for the arm_spe event

2022-03-05T19:00:12+00:00

Adds a couple of perf_event_attr tests for the fix introduced in [1]. The tests check that the correct sample_period value is set in the struct perf_event_attr of the arm_spe events. [1]: https://lore.kernel.org/all/20220118144054.2541-1-german.gomez@arm.com/ Reviewed-by: James Clark Signed-off-by: German Gomez Tested-by: Leo Yan Cc: Alexander Shishkin Cc: Jiri Olsa Cc: John Fastabend Cc: KP Singh Cc: Mark Rutland Cc: Martin KaFai Lau Cc: Namhyung Kim Cc: Song Liu Cc: Yonghong Song Link: https://lore.kernel.org/r/20220126160710.32983-1-german.gomez@arm.com Signed-off-by: Arnaldo Carvalho de Melo

perf test: Fix arm64 perf_event_attr tests wrt --call-graph initialization

2022-02-16T16:51:47+00:00

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. 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' [...] Fixes: 7248e308a5758761 ("perf tools: Record ARM64 LR register automatically") Signed-off-by: German Gomez Cc: Alexander Shishkin Cc: Alexandre Truong Cc: Ian Rogers Cc: James Clark Cc: Jiri Olsa Cc: John Fastabend Cc: KP Singh Cc: Mark Rutland Cc: Martin KaFai Lau Cc: Namhyung Kim Cc: Song Liu Cc: Yonghong Song Link: http://lore.kernel.org/lkml/20220125104435.2737-1-german.gomez@arm.com Signed-off-by: Arnaldo Carvalho de Melo

perf tests attr: Add missing topdown metrics events

2021-10-05T17:55:38+00:00

The Topdown metrics events were added as 'perf stat' default events since commit 42641d6f4d15e6db ("perf stat: Add Topdown metrics events as default events"). However, the perf attr tests were not updated accordingly. The perf attr test fails on the platform which supports Topdown metrics. # perf test 17 17: Setup struct perf_event_attr :FAILED! Add Topdown metrics events into perf attr test cases. Make them optional since they are only available on newer platforms. Fixes: 42641d6f4d15e6db ("perf stat: Add Topdown metrics events as default events") Reported-by: kernel test robot Signed-off-by: Kan Liang Cc: Andi Kleen Cc: Jiri Olsa Link: http://lore.kernel.org/lkml/1633031566-176517-1-git-send-email-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf test: Test 17 fails with make LIBPFM4=1 on s390 z/VM

2021-06-01T13:57:39+00:00

This test case fails on s390 virtual machine z/VM which has no PMU support when the perf tool is built with LIBPFM4=1. Using make LIBPFM4=1 builds the perf tool with support for libpfm event notation. The command line flag --pfm-events is valid: # ./perf record --pfm-events cycles -- true [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.001 MB perf.data (2 samples) ] # However the command 'perf test -Fv 17' fails on s390 z/VM virtual machine with LIBPFM4=1: # perf test -Fv 17 17: Setup struct perf_event_attr : --- start --- ..... running './tests/attr/test-record-group2' unsupp './tests/attr/test-record-group2' running './tests/attr/test-record-pfm-period' expected exclude_hv=0, got 1 FAILED './tests/attr/test-record-pfm-period' - match failure ---- end ---- Setup struct perf_event_attr: FAILED! When --pfm-event system is not supported, the test returns unsupported and continues. Here is an example using a virtual machine on x86 and Fedora 34: [root@f33 perf]# perf test -Fv 17 17: Setup struct perf_event_attr : --- start --- ..... running './tests/attr/test-record-group2' unsupp './tests/attr/test-record-group2' running './tests/attr/test-record-pfm-period' unsupp './tests/attr/test-record-pfm-period' .... The issue is file ./tests/attr/test-record-pfm-period which requires perf event attribute member exclude_hv to be zero. This is not the case on s390 where the value of exclude_hv is one when executing on a z/VM virtual machine without PMU hardware support. Fix this by allowing value exlucde_hv to be zero or one. Output before: # /usr/bin/python ./tests/attr.py -d ./tests/attr/ -t \ test-record-pfm-period -p ./perf -vvv 2>&1| fgrep match matching [event:base-record] match: [event:base-record] matches [] FAILED './tests/attr//test-record-pfm-period' - match failure # Output after: # /usr/bin/python ./tests/attr.py -d ./tests/attr/ -t \ test-record-pfm-period -p ./perf -vvv 2>&1| fgrep match matching [event:base-record] match: [event:base-record] matches ['event-1-0-6', 'event-1-0-5'] matched Background: Using libpfm library ends up in this function call sequence pfm_get_perf_event_encoding() +-- pfm_get_os_event_encoding() +-- pfmlib_perf_event_encode() is called when no hardware specific PMU unit can be detected as in the s390 z/VM virtual machine case. This uses the "perf_events generic PMU" data structure which sets exclude_hv to 1 per default. Using this PMU that test case always fails. That is the reason why exclude_hv attribute setting varies. Version 2: As suggested by Ian Rogers make perf_event_attribute member exclude_hv more robust and accept value 0 or 1 to handle more test cases which might fail on s390 virtual machine z/VM. Suggested-by: Ian Rogers Signed-off-by: Thomas Richter Reviewed-by: Ian Rogers Cc: Heiko Carstens Cc: Ian Rogers Cc: Sumanth Korikkar Cc: Sven Schnelle Cc: Vasily Gorbik Link: http://lore.kernel.org/lkml/20210528091050.245838-1-tmricht@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo

tools headers UAPI: Sync perf_event.h with the kernel sources

2021-05-10T12:01:01+00:00

To pick up the changes in: 2b26f0aa004995f4 ("perf: Support only inheriting events if cloned with CLONE_THREAD") 2e498d0a74e5b88a ("perf: Add support for event removal on exec") 547b60988e631f74 ("perf: aux: Add flags for the buffer format") 55bcf6ef314ae8ba ("perf: Extend PERF_TYPE_HARDWARE and PERF_TYPE_HW_CACHE") 7dde51767ca5339e ("perf: aux: Add CoreSight PMU buffer formats") 97ba62b278674293 ("perf: Add support for SIGTRAP on perf events") d0d1dd628527c77d ("perf core: Add PERF_COUNT_SW_CGROUP_SWITCHES event") Also change the expected sizeof(struct perf_event_attr) from 120 to 128 due to fields being added for the SIGTRAP changes. Addressing this perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/linux/perf_event.h' differs from latest version at 'include/uapi/linux/perf_event.h' diff -u tools/include/uapi/linux/perf_event.h include/uapi/linux/perf_event.h Cc: Kan Liang Cc: Marco Elver Cc: Mathieu Poirier Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Suzuki K Poulose Signed-off-by: Arnaldo Carvalho de Melo

perf test: Leader sampling shouldn't clear sample period

2020-09-14T22:35:22+00:00

Add test that a sibling with leader sampling doesn't have its period cleared. Signed-off-by: Ian Rogers Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Alexei Starovoitov Cc: Andi Kleen Cc: Andrii Nakryiko Cc: Athira Jajeev Cc: Daniel Borkmann Cc: John Fastabend Cc: KP Singh Cc: Mark Rutland Cc: Martin KaFai Lau Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Song Liu Cc: Stephane Eranian Cc: Yonghong Song Cc: bpf@vger.kernel.org Cc: netdev@vger.kernel.org Link: http://lore.kernel.org/lkml/20200912025655.1337192-5-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo

perf test: Ensure sample_period is set libpfm4 events

2020-07-30T10:01:49+00:00

Test that a command line option doesn't override the period set on a libpfm4 event. Without libpfm4 test passes as unsupported. Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Alexei Starovoitov Cc: Andi Kleen Cc: Andrii Nakryiko Cc: Athira Jajeev Cc: Daniel Borkmann Cc: Jiri Olsa Cc: John Fastabend Cc: KP Singh Cc: Mark Rutland Cc: Martin KaFai Lau Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Song Liu Cc: Stephane Eranian Cc: Yonghong Song Cc: bpf@vger.kernel.org Cc: netdev@vger.kernel.org Link: http://lore.kernel.org/lkml/20200728085734.609930-4-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo

perf record: Add dummy event during system wide synthesis

2020-05-28T13:03:25+00:00

During the processing of /proc during event synthesis new processes may start. Add a dummy event if /proc is to be processed, to capture mmaps for starting processes. This reuses the existing logic for initial-delay. v3 fixes the attr test of test-record-C0 v2 fixes the dummy event configuration and a branch stack issue. Suggested-by: Stephane Eranian Signed-off-by: Ian Rogers Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Kan Liang Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lore.kernel.org/lkml/20200422173615.59436-1-irogers@google.com [ split from a larger patch ] Signed-off-by: Arnaldo Carvalho de Melo