linux-kernel - [PATCH v2 14/22] perf test: Convert llvm tests to test cases.

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Date:   Wed, 13 Oct 2021 10:45:56 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Jin Yao <yao.jin@...ux.intel.com>,
        John Garry <john.garry@...wei.com>,
        "Paul A . Clarke" <pc@...ibm.com>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        Brendan Higgins <brendanhiggins@...gle.com>,
        Daniel Latypov <dlatypov@...gle.com>,
        David Gow <davidgow@...gle.com>
Cc:     eranian@...gle.com, Ian Rogers <irogers@...gle.com>
Subject: [PATCH v2 14/22] perf test: Convert llvm tests to test cases.

Use null terminated array of test cases rather than the previous sub
test functions.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/tests/llvm.c | 77 +++++++++++++++++++++++++++++------------
 1 file changed, 54 insertions(+), 23 deletions(-)

diff --git a/tools/perf/tests/llvm.c b/tools/perf/tests/llvm.c
index 057d6a59a8ea..f27ef00d65e9 100644
--- a/tools/perf/tests/llvm.c
+++ b/tools/perf/tests/llvm.c
@@ -124,7 +124,7 @@ test_llvm__fetch_bpf_obj(void **p_obj_buf,
 	return ret;
 }
 
-static int test__llvm(struct test_suite *test __maybe_unused, int subtest)
+static int test__llvm(int subtest)
 {
 	int ret;
 	void *obj_buf = NULL;
@@ -148,42 +148,73 @@ static int test__llvm(struct test_suite *test __maybe_unused, int subtest)
 
 	return ret;
 }
+#endif //HAVE_LIBBPF_SUPPORT
 
-static int test__llvm_subtest_get_nr(void)
+static int test__llvm__bpf_base_prog(struct test_suite *test __maybe_unused,
+				     int subtest __maybe_unused)
 {
-	return __LLVM_TESTCASE_MAX;
+#ifdef HAVE_LIBBPF_SUPPORT
+	return test__llvm(LLVM_TESTCASE_BASE);
+#else
+	pr_debug("Skip LLVM test because BPF support is not compiled\n");
+	return TEST_SKIP;
+#endif
 }
 
-static const char *test__llvm_subtest_get_desc(int subtest)
-{
-	if ((subtest < 0) || (subtest >= __LLVM_TESTCASE_MAX))
-		return NULL;
-
-	return bpf_source_table[subtest].desc;
-}
-#else //HAVE_LIBBPF_SUPPORT
-static int test__llvm(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
+static int test__llvm__bpf_test_kbuild_prog(struct test_suite *test __maybe_unused,
+					    int subtest __maybe_unused)
 {
+#ifdef HAVE_LIBBPF_SUPPORT
+	return test__llvm(LLVM_TESTCASE_KBUILD);
+#else
+	pr_debug("Skip LLVM test because BPF support is not compiled\n");
 	return TEST_SKIP;
+#endif
 }
 
-static int test__llvm_subtest_get_nr(void)
+static int test__llvm__bpf_test_prologue_prog(struct test_suite *test __maybe_unused,
+					      int subtest __maybe_unused)
 {
-	return 0;
+#ifdef HAVE_LIBBPF_SUPPORT
+	return test__llvm(LLVM_TESTCASE_BPF_PROLOGUE);
+#else
+	pr_debug("Skip LLVM test because BPF support is not compiled\n");
+	return TEST_SKIP;
+#endif
 }
 
-static const char *test__llvm_subtest_get_desc(int subtest __maybe_unused)
+static int test__llvm__bpf_test_relocation(struct test_suite *test __maybe_unused,
+					   int subtest __maybe_unused)
 {
-	return NULL;
+#ifdef HAVE_LIBBPF_SUPPORT
+	return test__llvm(LLVM_TESTCASE_BPF_RELOCATION);
+#else
+	pr_debug("Skip LLVM test because BPF support is not compiled\n");
+	return TEST_SKIP;
+#endif
 }
-#endif // HAVE_LIBBPF_SUPPORT
+
+
+static struct test_case llvm_tests[] = {
+#ifdef HAVE_LIBBPF_SUPPORT
+	TEST_CASE("Basic BPF llvm compile", llvm__bpf_base_prog),
+	TEST_CASE("kbuild searching", llvm__bpf_test_kbuild_prog),
+	TEST_CASE("Compile source for BPF prologue generation",
+		  llvm__bpf_test_prologue_prog),
+	TEST_CASE("Compile source for BPF relocation", llvm__bpf_test_relocation),
+#else
+	TEST_CASE_REASON("Basic BPF llvm compile", llvm__bpf_base_prog, "not compiled in"),
+	TEST_CASE_REASON("kbuild searching", llvm__bpf_test_kbuild_prog, "not compiled in"),
+	TEST_CASE_REASON("Compile source for BPF prologue generation",
+			llvm__bpf_test_prologue_prog, "not compiled in"),
+	TEST_CASE_REASON("Compile source for BPF relocation",
+			llvm__bpf_test_relocation, "not compiled in"),
+#endif
+	{ .name = NULL, }
+};
 
 struct test_suite suite__llvm = {
 	.desc = "LLVM search and compile",
-	.func = test__llvm,
-	.subtest = {
-		.skip_if_fail	= true,
-		.get_nr		= test__llvm_subtest_get_nr,
-		.get_desc	= test__llvm_subtest_get_desc,
-	},
+	.test_cases = llvm_tests,
+	.subtest = { .skip_if_fail = true, },
 };
-- 
2.33.0.882.g93a45727a2-goog