Re: [PATCH] perf test: Add perf_event_attr tests for the arm_spe event
From: Leo Yan <hidden>
Date: 2022-02-05 08:10:29
Also in:
bpf, linux-perf-users, lkml
Hi German, On Wed, Jan 26, 2022 at 04:07:09PM +0000, German Gomez wrote:
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/ (local) Signed-off-by: German Gomez <redacted>
I tested this patch with two commands:
# PERF_TEST_ATTR=/tmp /usr/bin/python2 ./tests/attr.py -d ./tests/attr/ \
-p ./perf -vvvvv -t test-record-spe-period
# PERF_TEST_ATTR=/tmp /usr/bin/python2 ./tests/attr.py -d ./tests/attr/ \
-p ./perf -vvvvv -t test-record-spe-period-term
Both testing can pass on Hisilicon D06 board.
One question: I'm a bit concern this case will fail on some Arm64
platforms which doesn't contain Arm SPE modules. E.g. below commands
will always fail on Arm64 platforms if SPE module is absent. So I am
wandering if we can add extra checking ARM SPE event is existed or not?
# ./perf test list
17: Setup struct perf_event_attr
# ./perf test 17
Thanks,
Leo
quoted hunk ↗ jump to hunk
--- tools/perf/tests/attr/README | 2 + tools/perf/tests/attr/base-record-spe | 40 +++++++++++++++++++ tools/perf/tests/attr/test-record-spe-period | 12 ++++++ .../tests/attr/test-record-spe-period-term | 12 ++++++ 4 files changed, 66 insertions(+) create mode 100644 tools/perf/tests/attr/base-record-spe create mode 100644 tools/perf/tests/attr/test-record-spe-period create mode 100644 tools/perf/tests/attr/test-record-spe-period-termdiff --git a/tools/perf/tests/attr/README b/tools/perf/tests/attr/README index 1116fc6bf2ac..454505d343fa 100644 --- a/tools/perf/tests/attr/README +++ b/tools/perf/tests/attr/README@@ -58,6 +58,8 @@ Following tests are defined (with perf commands): perf record -c 100 -P kill (test-record-period) perf record -c 1 --pfm-events=cycles:period=2 (test-record-pfm-period) perf record -R kill (test-record-raw) + perf record -c 2 -e arm_spe_0// -- kill (test-record-spe-period) + perf record -e arm_spe_0/period=3/ -- kill (test-record-spe-period-term) perf stat -e cycles kill (test-stat-basic) perf stat kill (test-stat-default) perf stat -d kill (test-stat-detailed-1)diff --git a/tools/perf/tests/attr/base-record-spe b/tools/perf/tests/attr/base-record-spe new file mode 100644 index 000000000000..08fa96b59240 --- /dev/null +++ b/tools/perf/tests/attr/base-record-spe@@ -0,0 +1,40 @@ +[event] +fd=* +group_fd=-1 +flags=* +cpu=* +type=* +size=* +config=* +sample_period=* +sample_type=* +read_format=* +disabled=* +inherit=* +pinned=* +exclusive=* +exclude_user=* +exclude_kernel=* +exclude_hv=* +exclude_idle=* +mmap=* +comm=* +freq=* +inherit_stat=* +enable_on_exec=* +task=* +watermark=* +precise_ip=* +mmap_data=* +sample_id_all=* +exclude_host=* +exclude_guest=* +exclude_callchain_kernel=* +exclude_callchain_user=* +wakeup_events=* +bp_type=* +config1=* +config2=* +branch_sample_type=* +sample_regs_user=* +sample_stack_user=*diff --git a/tools/perf/tests/attr/test-record-spe-period b/tools/perf/tests/attr/test-record-spe-period new file mode 100644 index 000000000000..75f8c9cd8e3f --- /dev/null +++ b/tools/perf/tests/attr/test-record-spe-period@@ -0,0 +1,12 @@ +[config] +command = record +args = --no-bpf-event -c 2 -e arm_spe_0// -- kill >/dev/null 2>&1 +ret = 1 +arch = aarch64 + +[event-10:base-record-spe] +sample_period=2 +freq=0 + +# dummy event +[event-1:base-record-spe]diff --git a/tools/perf/tests/attr/test-record-spe-period-term b/tools/perf/tests/attr/test-record-spe-period-term new file mode 100644 index 000000000000..8f60a4fec657 --- /dev/null +++ b/tools/perf/tests/attr/test-record-spe-period-term@@ -0,0 +1,12 @@ +[config] +command = record +args = --no-bpf-event -e arm_spe_0/period=3/ -- kill >/dev/null 2>&1 +ret = 1 +arch = aarch64 + +[event-10:base-record-spe] +sample_period=3 +freq=0 + +# dummy event +[event-1:base-record-spe]-- 2.25.1