tools/perf/tests/evsel-roundtrip-name.c

Source file repositories/reference/linux-study-clean/tools/perf/tests/evsel-roundtrip-name.c

File Facts

System
Linux kernel
Corpus path
tools/perf/tests/evsel-roundtrip-name.c
Extension
.c
Size
2467 bytes
Lines
105
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

if (evlist == NULL) {
					pr_debug("Failed to alloc evlist");
					return TEST_FAIL;
				}
				__evsel__hw_cache_type_op_res_name(type, op, res,
								name, sizeof(name));

				err = parse_event(evlist, name);
				if (err) {
					pr_debug("Failure to parse cache event '%s' possibly as PMUs don't support it",
						name);
					evlist__delete(evlist);
					continue;
				}
				evlist__for_each_entry(evlist, evsel) {
					if (!evsel__name_is(evsel, name)) {
						pr_debug("%s != %s\n", evsel__name(evsel), name);
						ret = TEST_FAIL;
					}
				}
				evlist__delete(evlist);
			}
		}
	}
	return ret;
}

static int perf_evsel__name_array_test(const char *const names[], int nr_names)
{
	int ret = TEST_OK;

	for (int i = 0; i < nr_names; ++i) {
		struct evlist *evlist = evlist__new();
		struct evsel *evsel;
		int err;

		if (evlist == NULL) {
			pr_debug("Failed to alloc evlist");
			return TEST_FAIL;
		}
		err = parse_event(evlist, names[i]);
		if (err) {
			pr_debug("failed to parse event '%s', err %d\n",
				 names[i], err);
			evlist__delete(evlist);
			ret = TEST_FAIL;
			continue;
		}
		evlist__for_each_entry(evlist, evsel) {
			if (!evsel__name_is(evsel, names[i])) {
				pr_debug("%s != %s\n", evsel__name(evsel), names[i]);
				ret = TEST_FAIL;
			}
		}
		evlist__delete(evlist);
	}
	return ret;
}

static int test__perf_evsel__roundtrip_name_test(struct test_suite *test __maybe_unused,
						 int subtest __maybe_unused)
{
	int err = 0, ret = TEST_OK;

	err = perf_evsel__name_array_test(evsel__hw_names, PERF_COUNT_HW_MAX);
	if (err)
		ret = err;

	err = perf_evsel__name_array_test(evsel__sw_names, PERF_COUNT_SW_DUMMY + 1);
	if (err)
		ret = err;

	err = perf_evsel__roundtrip_cache_name_test();
	if (err)
		ret = err;

	return ret;
}

DEFINE_SUITE("Roundtrip evsel->name", perf_evsel__roundtrip_name_test);

Annotation

Implementation Notes