linux-kernel - [PATCH v2 2/3] perf cpumap: Add more tests for CPU map merging

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Message-Id: <20241107125308.41226-3-leo.yan@arm.com>
Date: Thu,  7 Nov 2024 12:53:07 +0000
From: Leo Yan <leo.yan@....com>
To: Arnaldo Carvalho de Melo <acme@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Ian Rogers <irogers@...gle.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Jiri Olsa <jolsa@...nel.org>,
	"Liang, Kan" <kan.liang@...ux.intel.com>,
	James Clark <james.clark@...aro.org>,
	linux-perf-users@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Leo Yan <leo.yan@....com>
Subject: [PATCH v2 2/3] perf cpumap: Add more tests for CPU map merging

Add additional tests for CPU map merging to cover more cases.

These tests include different types of arguments, such as when one CPU
map is a subset of another, as well as cases with or without overlap
between the two maps.

Signed-off-by: Leo Yan <leo.yan@....com>
---
 tools/perf/tests/cpumap.c | 34 +++++++++++++++++++++++++++++-----
 1 file changed, 29 insertions(+), 5 deletions(-)

diff --git a/tools/perf/tests/cpumap.c b/tools/perf/tests/cpumap.c
index 7f189d57232f..f8187a801b8e 100644
--- a/tools/perf/tests/cpumap.c
+++ b/tools/perf/tests/cpumap.c
@@ -156,21 +156,45 @@ static int test__cpu_map_print(struct test_suite *test __maybe_unused, int subte
 	return 0;
 }
 
-static int test__cpu_map_merge(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
+static int __test__cpu_map_merge(const char *lhs, const char *rhs, int nr, const char *expected)
 {
-	struct perf_cpu_map *a = perf_cpu_map__new("4,2,1");
-	struct perf_cpu_map *b = perf_cpu_map__new("4,5,7");
+	struct perf_cpu_map *a = perf_cpu_map__new(lhs);
+	struct perf_cpu_map *b = perf_cpu_map__new(rhs);
 	char buf[100];
 
 	perf_cpu_map__merge(&a, b);
-	TEST_ASSERT_VAL("failed to merge map: bad nr", perf_cpu_map__nr(a) == 5);
+	TEST_ASSERT_VAL("failed to merge map: bad nr", perf_cpu_map__nr(a) == nr);
 	cpu_map__snprint(a, buf, sizeof(buf));
-	TEST_ASSERT_VAL("failed to merge map: bad result", !strcmp(buf, "1-2,4-5,7"));
+	TEST_ASSERT_VAL("failed to merge map: bad result", !strcmp(buf, expected));
 	perf_cpu_map__put(b);
 	perf_cpu_map__put(a);
 	return 0;
 }
 
+static int test__cpu_map_merge(struct test_suite *test __maybe_unused,
+			       int subtest __maybe_unused)
+{
+	int ret;
+
+	ret = __test__cpu_map_merge("4,2,1", "4,5,7", 5, "1-2,4-5,7");
+	if (ret)
+		return ret;
+	ret = __test__cpu_map_merge("1-8", "6-9", 9, "1-9");
+	if (ret)
+		return ret;
+	ret = __test__cpu_map_merge("1-8,12-20", "6-9,15", 18, "1-9,12-20");
+	if (ret)
+		return ret;
+	ret = __test__cpu_map_merge("4,2,1", "1", 3, "1-2,4");
+	if (ret)
+		return ret;
+	ret = __test__cpu_map_merge("1", "4,2,1", 3, "1-2,4");
+	if (ret)
+		return ret;
+	ret = __test__cpu_map_merge("1", "1", 1, "1");
+	return ret;
+}
+
 static int __test__cpu_map_intersect(const char *lhs, const char *rhs, int nr, const char *expected)
 {
 	struct perf_cpu_map *a = perf_cpu_map__new(lhs);
-- 
2.34.1