From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Namhyung Kim <namhyung@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
James Clark <james.clark@linaro.org>,
Jiri Olsa <jolsa@kernel.org>, Ian Rogers <irogers@google.com>,
Adrian Hunter <adrian.hunter@intel.com>,
Clark Williams <williams@redhat.com>,
linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: [PATCH 3/6] perf test attr: Fix record dwarf sample_type expectation
Date: Tue, 6 Oct 2026 18:13:06 +0200 [thread overview]
Message-ID: <20261006161309.3078488-4-acme@kernel.org> (raw)
In-Reply-To: <20261006161309.3078488-1-acme@kernel.org>
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Since bdd051e249141c79 ("perf record: Split --data-mmap option"),
record_opts__parse_callchain() sets record_data_mmap instead of
record->sample_address for the DWARF unwind mode, so -d/--data and its
implied PERF_SAMPLE_DATA_SRC are not enabled implicitly anymore.
As a result, --call-graph dwarf no longer sets PERF_SAMPLE_ADDR and
PERF_SAMPLE_DATA_SRC, making the test fail:
expected sample_type=45359, got 12583
where 45359 (0xb12f) is:
IP|TID|TIME|ADDR|CALLCHAIN|PERIOD|REGS_USER|STACK_USER|DATA_SRC
and 12583 (0x3127) is:
IP|TID|TIME|CALLCHAIN|PERIOD|REGS_USER|STACK_USER
i.e. the values differ exactly by PERF_SAMPLE_ADDR (0x8) and
PERF_SAMPLE_DATA_SRC (0x8000). The mmap_data=1 expectation is still
correct as DWARF now enables record_data_mmap.
This went unnoticed because tests/attr.sh ignored attr.py's return
value until 04a0a19ede01e771 ("perf test attr: Propagate the return
value from the test to the wrapper").
Fixes: bdd051e249141c79 ("perf record: Split --data-mmap option")
Assisted-by: LLM
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/tests/shell/attr/test-record-graph-dwarf | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/tests/shell/attr/test-record-graph-dwarf b/tools/perf/tests/shell/attr/test-record-graph-dwarf
index ae92061d611ded68..fbe0faa8cdb6a8f4 100644
--- a/tools/perf/tests/shell/attr/test-record-graph-dwarf
+++ b/tools/perf/tests/shell/attr/test-record-graph-dwarf
@@ -4,7 +4,7 @@ args = --no-bpf-event --call-graph dwarf -- kill >/dev/null 2>&1
ret = 1
[event:base-record]
-sample_type=45359
+sample_type=12583
exclude_callchain_user=1
sample_stack_user=8192
# TODO different for each arch, no support for that now
--
2.55.0
next prev parent reply other threads:[~2026-10-06 16:13 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-06 16:13 [PATCH 0/6 v1] perf test attr: Fix the re-enabled test Arnaldo Carvalho de Melo
2026-10-06 16:13 ` [PATCH 1/6] perf test attr: Propagate the return value from the test to the wrapper Arnaldo Carvalho de Melo
2026-10-06 16:13 ` [PATCH 2/6] perf test attr: Fix wrong size expectation for events Arnaldo Carvalho de Melo
2026-10-06 16:13 ` Arnaldo Carvalho de Melo [this message]
2026-10-06 16:13 ` [PATCH 4/6] perf test attr: Fix legacy event encodings in group tests Arnaldo Carvalho de Melo
2026-10-06 16:13 ` [PATCH 5/6] perf test attr: Fix default stat metrics expectations Arnaldo Carvalho de Melo
2026-10-06 16:13 ` [PATCH 6/6] perf test attr: Relax group checking for ungrouped expectations Arnaldo Carvalho de Melo
2026-10-07 0:00 ` [PATCH 0/6 v1] perf test attr: Fix the re-enabled test Namhyung Kim
2026-10-07 0:22 ` Namhyung Kim
2026-10-07 5:58 ` Arnaldo Melo
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