[PATCH v2 4/4] perf, tools: Add test cases for new data source encoding

[Andi Kleen]

From: Andi Kleen <ak@xxxxxxxxxxxxxxx>

Add some simple tests to perf test to test data source printing.

v2: Make the tests actually checked for the correct name of Forward
Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
---
 tools/perf/tests/Build          |  1 +
 tools/perf/tests/builtin-test.c |  4 ++++
 tools/perf/tests/mem.c          | 50 +++++++++++++++++++++++++++++++++++++++++
 tools/perf/tests/tests.h        |  1 +
 4 files changed, 56 insertions(+)
 create mode 100644 tools/perf/tests/mem.c

diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build
index af58ebc243ef..540409613b73 100644
--- a/tools/perf/tests/Build
+++ b/tools/perf/tests/Build
@@ -34,6 +34,7 @@ perf-y += thread-map.o
 perf-y += llvm.o llvm-src-base.o llvm-src-kbuild.o llvm-src-prologue.o llvm-src-relocation.o
 perf-y += bpf.o
 perf-y += topology.o
+perf-y += mem.o
 perf-y += cpumap.o
 perf-y += stat.o
 perf-y += event_update.o
diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index 9e08d297f1a9..57d355445c4f 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -43,6 +43,10 @@ static struct test generic_tests[] = {
 		.func = test__basic_mmap,
 	},
 	{
+		.desc = "Test data source output",
+		.func = test__mem,
+	},
+	{
 		.desc = "Parse event definition strings",
 		.func = test__parse_events,
 	},
diff --git a/tools/perf/tests/mem.c b/tools/perf/tests/mem.c
new file mode 100644
index 000000000000..b3fa20bd46df
--- /dev/null
+++ b/tools/perf/tests/mem.c
@@ -0,0 +1,50 @@
+#include "util/mem-events.h"
+#include "util/symbol.h"
+#include "linux/perf_event.h"
+#include "util/debug.h"
+#include "tests.h"
+#include <string.h>
+
+static int check(union perf_mem_data_src data_src,
+		  const char *string)
+{
+	char out[100];
+	char failure[100];
+	struct mem_info mi = { .data_src = data_src };
+
+	int n;
+
+	n = perf_mem__snp_scnprintf(out, sizeof out, &mi);
+	n += perf_mem__lvl_scnprintf(out + n, sizeof out - n, &mi);
+	snprintf(failure, sizeof failure, "unexpected %s", out);
+	TEST_ASSERT_VAL(failure, !strcmp(string, out));
+	return 0;
+}
+
+int test__mem(int subtest __maybe_unused)
+{
+	int ret = 0;
+
+	ret |= check(((union perf_mem_data_src) {
+				.mem_lvl = PERF_MEM_LVL_HIT,
+				.mem_lvlx = PERF_MEM_LVLX_L4 }), "N/AL4 hit");
+
+	ret |= check(((union perf_mem_data_src) {
+				.mem_lvl = PERF_MEM_LVL_HIT,
+				.mem_lvlx = PERF_MEM_LVLX_REM_L4 }), "N/ARemote L4 hit");
+
+	ret |= check(((union perf_mem_data_src) {
+				.mem_lvl = PERF_MEM_LVL_MISS,
+				.mem_lvlx = PERF_MEM_LVLX_PMEM }), "N/APMEM miss");
+
+	ret |= check(((union perf_mem_data_src) {
+				.mem_lvl = PERF_MEM_LVL_MISS,
+				.mem_lvlx = PERF_MEM_LVLX_REM_PMEM }), "N/ARemote PMEM miss");
+
+	ret |= check(((union perf_mem_data_src) {
+				.mem_snoopx = PERF_MEM_SNOOPX_FWD,
+				.mem_lvl = PERF_MEM_LVL_MISS,
+				.mem_lvlx = PERF_MEM_LVLX_REM_RAM }), "FwdRemote RAM miss");
+
+	return ret;
+}
diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h
index 631859629403..3b3017ee91d6 100644
--- a/tools/perf/tests/tests.h
+++ b/tools/perf/tests/tests.h
@@ -56,6 +56,7 @@ int test__python_use(int subtest);
 int test__bp_signal(int subtest);
 int test__bp_signal_overflow(int subtest);
 int test__task_exit(int subtest);
+int test__mem(int subtest);
 int test__sw_clock_freq(int subtest);
 int test__code_reading(int subtest);
 int test__sample_parsing(int subtest);
-- 
2.9.4