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linux/tools/perf/tests
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James Clark fa7095c5c3 perf unwind: Don't show unwind error messages when augmenting frame pointer stack 
Commit Fixes: b9f6fbb3b2 ("perf arm64: Inject missing frames when
using 'perf record --call-graph=fp'") intended to add a 'best effort'
DWARF unwind that improved the frame pointer stack in most scenarios.

It's expected that the unwind will fail sometimes, but this shouldn't be
reported as an error. It only works when the return address can be
determined from the contents of the link register alone.

Fix the error shown when the unwinder requires extra registers by adding
a new flag that suppresses error messages. This flag is not set in the
normal --call-graph=dwarf unwind mode so that behavior is not changed.

Fixes: b9f6fbb3b2 ("perf arm64: Inject missing frames when using 'perf record --call-graph=fp'")
Reported-by: John Garry <john.garry@huawei.com>
Signed-off-by: James Clark <james.clark@arm.com>
Tested-by: John Garry <john.garry@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexandre Truong <alexandre.truong@arm.com>
Cc: German Gomez <german.gomez@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20220406145651.1392529-1-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-04-09 12:34:29 -03:00
..
attr perf test: Add perf_event_attr tests for the arm_spe event 2022-03-05 16:00:12 -03:00
shell perf test arm64: Test unwinding using fame-pointer (fp) mode 2022-03-21 18:05:23 -03:00
.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: 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
bp_signal.c perf test: BP tests, remove is_supported use 2021-11-13 18:11:50 -03:00
bpf-script-example.c perf tests: Add missing SPDX headers 2019-06-17 15:57:19 -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 bpf: Stop using deprecated bpf_load_program() API 2022-02-14 15:49:34 -03:00
Build perf test sigtrap: Add basic stress test for sigtrap handling 2021-12-07 22:18:23 -03:00
builtin-test.c perf test: Use 3 digits for test numbering now we can have more tests 2021-12-21 17:52:27 -03:00
clang.c perf test: Remove skip_if_fail 2021-11-13 18:11:50 -03:00
code-reading.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
cpumap.c perf cpumap: Migrate to libperf cpumap api 2022-02-11 14:01:15 -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_update.c perf cpumap: Migrate to libperf cpumap api 2022-01-22 17:08:42 -03:00
event-times.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
evsel-roundtrip-name.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -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 test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
expr.c perf test: Fix 'Simple expression parser' test on arch without CPU die topology info 2021-12-06 21:57:53 -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 test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
hists_filter.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
hists_link.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
hists_output.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -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 test: Rename struct test to test_suite 2021-11-13 10:32:22 -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
mem2node.c perf cpumap: Migrate to libperf cpumap api 2022-01-22 17:08:42 -03:00
mem.c perf test: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
mmap-basic.c perf cpumap: Migrate to libperf cpumap api 2022-01-22 17:08:42 -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 cpumap: Give CPUs their own type 2022-01-12 14:28:23 -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: Rename struct test to test_suite 2021-11-13 10:32:22 -03:00
parse-events.c perf test: Add parse-events test for aliases with hyphens 2022-01-22 17:21:41 -03:00
parse-metric.c perf test: Reset shadow counts before loading 2021-12-06 21:57:53 -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 test: Rename struct test to test_suite 2021-11-13 10:32:22 -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 tsc: Fix error message when not supported 2022-04-09 12:34:29 -03:00
pfm.c perf test: Remove skip_if_fail 2021-11-13 18:11:50 -03:00
pmu-events.c perf test: Make metric testing more robust 2022-02-15 17:15:33 -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 test sample-parsing: Fix branch_stack entry endianness check 2021-11-18 10:08:07 -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 failing sigtrap test for arm+aarch64 2022-02-18 09:54:50 -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 test: Rename struct test to test_suite 2021-11-13 10:32:22 -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 sigtrap: Add basic stress test for sigtrap handling 2021-12-07 22:18:23 -03:00
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 cpumap: Migrate to libperf cpumap api 2022-01-22 17:08:42 -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 maps: Use a pointer for kmaps 2022-02-14 16:47:13 -03:00
wp.c perf tests wp: Remove unused functions on s390 2021-11-18 10:08:07 -03:00