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linux/tools/perf/tests
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James Clark e80cc8298e perf tests: Make "test data symbol" more robust on Neoverse N1 
[ Upstream commit 256ef072b3 ]

To prevent anyone from seeing a test failure appear as a regression and
thinking that it was caused by their code change, insert some noise into
the loop which makes it immune to sampling bias issues (errata 1694299).

The "test data symbol" test can fail with any unrelated change that
shifts the loop into an unfortunate position in the Perf binary which is
almost impossible to debug as the root cause of the test failure.
Ultimately it's caused by the referenced errata.

Fixes: 60abedb8aa ("perf test: Introduce script for data symbol testing")
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: James Clark <james.clark@arm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Spoorthy S <spoorts2@in.ibm.com>
Link: https://lore.kernel.org/r/20240410103458.813656-2-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2024-06-12 11:03:36 +02:00
..
attr perf test: Fix attr tests for PERF_FORMAT_LOST 2022-10-15 10:13:16 -03:00
shell perf test shell stat_bpf_counters: Fix test on Intel 2023-09-19 12:28:07 +02:00
workloads perf tests: Make "test data symbol" more robust on Neoverse N1 2024-06-12 11:03:36 +02:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
api-io.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
attr.c perf cpumap: Give CPUs their own type 2022-01-12 14:28:23 -03:00
attr.py perf script python: Add Python3 support to tests/attr.py 2019-02-05 10:31:08 -03:00
backward-ring-buffer.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
bitmap.c perf cpumap: Migrate to libperf cpumap api 2022-01-22 17:08:42 -03:00
bp_account.c perf test: Fix variable length array undefined behavior in bp_account 2022-06-19 10:41:43 -03:00
bp_signal.c perf test: BP tests, remove is_supported use 2021-11-13 18:11:50 -03:00
bp_signal_overflow.c perf test: BP tests, remove is_supported use 2021-11-13 18:11:50 -03:00
bpf-script-example.c perf bpf: Convert legacy map definition to BTF-defined 2022-08-01 14:43:13 -03:00
bpf-script-test-kbuild.c perf tests: Add missing SPDX headers 2019-06-17 15:57:19 -03:00
bpf-script-test-prologue.c perf tests: Add missing SPDX headers 2019-06-17 15:57:19 -03:00
bpf-script-test-relocation.c perf tests: Add missing SPDX headers 2019-06-17 15:57:19 -03:00
bpf.c perf test bpf: Skip test if kernel-debuginfo is not present 2023-03-10 09:33:26 +01:00
Build perf test: Add -w/--workload option 2024-06-12 11:03:36 +02:00
builtin-test-list.c perf test: Refactor shell tests allowing subdirs 2022-08-13 15:13:20 -03:00
builtin-test-list.h perf test: Refactor shell tests allowing subdirs 2022-08-13 15:13:20 -03:00
builtin-test.c perf test: Add 'datasym' test workload 2024-06-12 11:03:36 +02:00
clang.c perf test: Remove skip_if_fail 2021-11-13 18:11:50 -03:00
code-reading.c perf tools: Do not pass NULL to parse_events() 2022-08-10 14:30:09 -03:00
cpumap.c perf cpumap: Add range data encoding 2022-10-04 08:55:21 -03:00
demangle-java-test.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
demangle-ocaml-test.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
dlfilter-test.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
dso-data.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
dwarf-unwind.c perf unwind: Don't show unwind error messages when augmenting frame pointer stack 2022-04-09 12:34:29 -03:00
event-times.c perf tools: Do not pass NULL to parse_events() 2022-08-10 14:30:09 -03:00
event_update.c perf events: Prefer union over variable length array 2022-10-04 08:55:21 -03:00
evsel-roundtrip-name.c perf tools: Do not pass NULL to parse_events() 2022-08-10 14:30:09 -03:00
evsel-tp-sched.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
expand-cgroup.c perf pmu-events: Hide the pmu_events 2022-08-13 15:02:08 -03:00
expr.c perf expr: Allow a double if expression 2022-10-06 08:03:52 -03:00
fdarray.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
genelf.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
hists_common.c perf tools: Move event synthesizing routines to separate header 2019-09-20 09:19:22 -03:00
hists_common.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hists_cumulate.c perf tools: Do not pass NULL to parse_events() 2022-08-10 14:30:09 -03:00
hists_filter.c perf tools: Do not pass NULL to parse_events() 2022-08-10 14:30:09 -03:00
hists_link.c perf tools: Do not pass NULL to parse_events() 2022-08-10 14:30:09 -03:00
hists_output.c perf tools: Do not pass NULL to parse_events() 2022-08-10 14:30:09 -03:00
is_printable_array.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
keep-tracking.c perf tools: Do not pass NULL to parse_events() 2022-08-10 14:30:09 -03:00
kmod-path.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
llvm.c perf: Stop using bpf_object__open_buffer() API 2022-01-24 20:44:09 -08:00
llvm.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
make perf tools: Test build with libbpf/LIBBPF_DYNAMIC=1 2021-05-17 20:32:05 -03:00
maps.c perf test: Use pointer for maps 2022-02-14 16:51:03 -03:00
mem.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
mem2node.c perf cpumap: Migrate to libperf cpumap api 2022-01-22 17:08:42 -03:00
mmap-basic.c perf tests: Avoid pthread.h inclusion 2022-10-04 08:55:19 -03:00
mmap-thread-lookup.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
openat-syscall-all-cpus.c perf tests: Avoid pthread.h inclusion 2022-10-04 08:55:19 -03:00
openat-syscall-tp-fields.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
openat-syscall.c perf test: Use skip in openat syscall 2022-05-23 10:01:57 -03:00
parse-events.c perf test: Parse events break apart tests 2022-05-23 10:04:59 -03:00
parse-metric.c perf pmu-events: Hide the pmu_events 2022-08-13 15:02:08 -03:00
parse-no-sample-id-all.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
pe-file-parsing.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
pe-file.c perf tests: Add test for PE binary format support 2020-09-04 14:38:15 -03:00
pe-file.exe perf tests: Add test for PE binary format support 2020-09-04 14:38:15 -03:00
pe-file.exe.debug perf tests: Add test for PE binary format support 2020-09-04 14:38:15 -03:00
perf-hooks.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
perf-record.c perf tests: Avoid pthread.h inclusion 2022-10-04 08:55:19 -03:00
perf-targz-src-pkg License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
perf-time-to-tsc.c perf test: Fix double word in comments 2022-08-12 16:42:55 -03:00
pfm.c perf test: Remove skip_if_fail 2021-11-13 18:11:50 -03:00
pmu-events.c perf pmu-events: Hide the pmu_events 2022-08-13 15:02:08 -03:00
pmu.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
python-use.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
sample-parsing.c perf tools: Support reading PERF_FORMAT_LOST 2022-08-19 15:56:56 -03:00
sdt.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
sigtrap.c perf test: Skip sigtrap test on old kernels 2022-10-04 08:55:22 -03:00
stat.c perf cpumap: Give CPUs their own type 2022-01-12 14:28:23 -03:00
sw-clock.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
switch-tracking.c perf tools: Add evlist__add_sched_switch() 2022-10-06 08:03:53 -03:00
task-exit.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
tests.h perf test: Add 'datasym' test workload 2024-06-12 11:03:36 +02:00
thread-map.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
thread-maps-share.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
time-utils-test.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
topology.c perf stat: Rename to aggr_cpu_id.thread_idx 2022-10-06 08:03:53 -03:00
unit_number__scnprintf.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
vmlinux-kallsyms.c perf tests vmlinux-kallsyms: Update is_ignored_symbol function to match the kernel ignored list 2022-09-28 11:11:33 -03:00
wp.c perf test: Skip wp modify test on old kernels 2022-09-21 16:07:32 -03:00