6.9-stable review patch. If anyone has any objections, please let me know.
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From: James Clark james.clark@arm.com
[ Upstream commit 2dade41a533f337447b945239b87ff31a8857890 ]
PERF_PMU_CAP_EXTENDED_HW_TYPE results in multiple events being opened on heterogeneous systems. Currently this test only sets its required attributes on the first event. Not disabling enable_on_exec on the other events causes the test to fail because the forked objdump processes are sampled. No tracking event is opened so Perf only knows about its own mappings causing the objdump samples to give the following error:
$ perf test -vvv "object code reading"
Reading object code for memory address: 0xffff9aaa55ec thread__find_map failed ---- end(-1) ---- 24: Object code reading : FAILED!
Fixes: 251aa040244a3b17 ("perf parse-events: Wildcard most "numeric" events") 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: Ian Rogers irogers@google.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/20240410103458.813656-3-james.clark@arm.com Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- tools/perf/tests/code-reading.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-reading.c index 7a3a7bbbec714..29d2f3ee4e10f 100644 --- a/tools/perf/tests/code-reading.c +++ b/tools/perf/tests/code-reading.c @@ -637,11 +637,11 @@ static int do_test_code_reading(bool try_kcore)
evlist__config(evlist, &opts, NULL);
- evsel = evlist__first(evlist); - - evsel->core.attr.comm = 1; - evsel->core.attr.disabled = 1; - evsel->core.attr.enable_on_exec = 0; + evlist__for_each_entry(evlist, evsel) { + evsel->core.attr.comm = 1; + evsel->core.attr.disabled = 1; + evsel->core.attr.enable_on_exec = 0; + }
ret = evlist__open(evlist); if (ret < 0) {