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perf record: Add auto counter reload parse and regression tests

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Include event parsing and regression tests for auto counter reload
and ratio-to-prev event term.

Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Thomas Falcon <thomas.falcon@intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Dapeng Mi <dapeng1.mi@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Thomas Falcon 2025-10-02 18:43:06 -05:00 committed by Arnaldo Carvalho de Melo
parent 6b9c0261b3
commit 56be0fe5f6
2 changed files with 94 additions and 0 deletions
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54
tools/perf/tests/parse-events.c
View File

@ -1736,6 +1736,53 @@ static int test__intel_pt(struct evlist *evlist)
return TEST_OK;
}
static bool test__acr_valid(void)
{
struct perf_pmu *pmu = NULL;
while ((pmu = perf_pmus__scan_core(pmu)) != NULL) {
if (perf_pmu__has_format(pmu, "acr_mask"))
return true;
}
return false;
}
static int test__ratio_to_prev(struct evlist *evlist)
{
struct evsel *evsel;
int ret;
TEST_ASSERT_VAL("wrong number of entries", 2 * perf_pmus__num_core_pmus() == evlist->core.nr_entries);
evlist__for_each_entry(evlist, evsel) {
if (!perf_pmu__has_format(evsel->pmu, "acr_mask"))
return TEST_OK;
if (evsel == evlist__first(evlist)) {
TEST_ASSERT_VAL("wrong config2", 0 == evsel->core.attr.config2);
TEST_ASSERT_VAL("wrong leader", evsel__is_group_leader(evsel));
TEST_ASSERT_VAL("wrong core.nr_members", evsel->core.nr_members == 2);
TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 0);
ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, "cycles");
} else {
TEST_ASSERT_VAL("wrong config2", 0 == evsel->core.attr.config2);
TEST_ASSERT_VAL("wrong leader", !evsel__is_group_leader(evsel));
TEST_ASSERT_VAL("wrong core.nr_members", evsel->core.nr_members == 0);
TEST_ASSERT_VAL("wrong group_idx", evsel__group_idx(evsel) == 1);
ret = assert_hw(&evsel->core, PERF_COUNT_HW_INSTRUCTIONS, "instructions");
}
if (ret)
return ret;
/*
* The period value gets configured within evlist__config,
* while this test executes only parse events method.
*/
TEST_ASSERT_VAL("wrong period", 0 == evsel->core.attr.sample_period);
}
return TEST_OK;
}
static int test__checkevent_complex_name(struct evlist *evlist)
{
struct evsel *evsel = evlist__first(evlist);
@ -2249,6 +2296,13 @@ static const struct evlist_test test__events[] = {
.check = test__checkevent_tracepoint,
/* 4 */
},
{
.name = "{cycles,instructions/period=200000,ratio-to-prev=2.0/}",
.valid = test__acr_valid,
.check = test__ratio_to_prev,
/* 5 */
},
};
static const struct evlist_test test__events_pmu[] = {

40
tools/perf/tests/shell/record.sh
View File

@ -388,6 +388,45 @@ test_callgraph() {
echo "Callgraph test [Success]"
}
test_ratio_to_prev() {
echo "ratio-to-prev test"
if ! perf record -o /dev/null -e "{instructions, cycles/period=100000,ratio-to-prev=0.5/}" \
true 2> /dev/null
then
echo "ratio-to-prev [Skipped not supported]"
return
fi
if ! perf record -o /dev/null -e "instructions, cycles/period=100000,ratio-to-prev=0.5/" \
true |& grep -q 'Invalid use of ratio-to-prev term without preceding element in group'
then
echo "ratio-to-prev test [Failed elements must be in same group]"
err=1
return
fi
if ! perf record -o /dev/null -e "{instructions,dummy,cycles/period=100000,ratio-to-prev=0.5/}" \
true |& grep -q 'must have same PMU'
then
echo "ratio-to-prev test [Failed elements must have same PMU]"
err=1
return
fi
if ! perf record -o /dev/null -e "{instructions,cycles/ratio-to-prev=0.5/}" \
true |& grep -q 'Event period term or count (-c) must be set when using ratio-to-prev term.'
then
echo "ratio-to-prev test [Failed period must be set]"
err=1
return
fi
if ! perf record -o /dev/null -e "{cycles/ratio-to-prev=0.5/}" \
true |& grep -q 'Invalid use of ratio-to-prev term without preceding element in group'
then
echo "ratio-to-prev test [Failed need 2+ events]"
err=1
return
fi
echo "Basic ratio-to-prev record test [Success]"
}
# raise the limit of file descriptors to minimum
if [[ $default_fd_limit -lt $min_fd_limit ]]; then
ulimit -Sn $min_fd_limit
@ -404,6 +443,7 @@ test_leader_sampling
test_topdown_leader_sampling
test_precise_max
test_callgraph
test_ratio_to_prev
# restore the default value
ulimit -Sn $default_fd_limit