2 #include <bpf/libbpf.h>
3 #include <util/llvm-utils.h>
4 #include <util/cache.h>
9 static int perf_config_cb(const char *var, const char *val,
10 void *arg __maybe_unused)
12 return perf_default_config(var, val, arg);
15 #ifdef HAVE_LIBBPF_SUPPORT
16 static int test__bpf_parsing(void *obj_buf, size_t obj_buf_sz)
18 struct bpf_object *obj;
20 obj = bpf_object__open_buffer(obj_buf, obj_buf_sz, NULL);
23 bpf_object__close(obj);
27 static int test__bpf_parsing(void *obj_buf __maybe_unused,
28 size_t obj_buf_sz __maybe_unused)
30 pr_debug("Skip bpf parsing\n");
38 } bpf_source_table[__LLVM_TESTCASE_MAX] = {
39 [LLVM_TESTCASE_BASE] = {
40 .source = test_llvm__bpf_base_prog,
41 .desc = "Basic BPF llvm compiling test",
43 [LLVM_TESTCASE_KBUILD] = {
44 .source = test_llvm__bpf_test_kbuild_prog,
45 .desc = "Test kbuild searching",
47 [LLVM_TESTCASE_BPF_PROLOGUE] = {
48 .source = test_llvm__bpf_test_prologue_prog,
49 .desc = "Compile source for BPF prologue generation test",
55 test_llvm__fetch_bpf_obj(void **p_obj_buf,
57 enum test_llvm__testcase idx,
62 const char *tmpl_old, *clang_opt_old;
63 char *tmpl_new = NULL, *clang_opt_new = NULL;
64 int err, old_verbose, ret = TEST_FAIL;
66 if (idx >= __LLVM_TESTCASE_MAX)
69 source = bpf_source_table[idx].source;
70 desc = bpf_source_table[idx].desc;
72 perf_config(perf_config_cb, NULL);
75 * Skip this test if user's .perfconfig doesn't set [llvm] section
76 * and clang is not found in $PATH, and this is not perf test -v
78 if (!force && (verbose == 0 &&
79 !llvm_param.user_set_param &&
80 llvm__search_clang())) {
81 pr_debug("No clang and no verbosive, skip this test\n");
86 * llvm is verbosity when error. Suppress all error output if
89 old_verbose = verbose;
96 if (!llvm_param.clang_bpf_cmd_template)
99 if (!llvm_param.clang_opt)
100 llvm_param.clang_opt = strdup("");
102 err = asprintf(&tmpl_new, "echo '%s' | %s%s", source,
103 llvm_param.clang_bpf_cmd_template,
104 old_verbose ? "" : " 2>/dev/null");
107 err = asprintf(&clang_opt_new, "-xc %s", llvm_param.clang_opt);
111 tmpl_old = llvm_param.clang_bpf_cmd_template;
112 llvm_param.clang_bpf_cmd_template = tmpl_new;
113 clang_opt_old = llvm_param.clang_opt;
114 llvm_param.clang_opt = clang_opt_new;
116 err = llvm__compile_bpf("-", p_obj_buf, p_obj_buf_sz);
118 llvm_param.clang_bpf_cmd_template = tmpl_old;
119 llvm_param.clang_opt = clang_opt_old;
121 verbose = old_verbose;
130 pr_debug("Failed to compile test case: '%s'\n", desc);
134 int test__llvm(int subtest)
137 void *obj_buf = NULL;
138 size_t obj_buf_sz = 0;
140 if ((subtest < 0) || (subtest >= __LLVM_TESTCASE_MAX))
143 ret = test_llvm__fetch_bpf_obj(&obj_buf, &obj_buf_sz,
146 if (ret == TEST_OK) {
147 ret = test__bpf_parsing(obj_buf, obj_buf_sz);
148 if (ret != TEST_OK) {
149 pr_debug("Failed to parse test case '%s'\n",
150 bpf_source_table[subtest].desc);
158 int test__llvm_subtest_get_nr(void)
160 return __LLVM_TESTCASE_MAX;
163 const char *test__llvm_subtest_get_desc(int subtest)
165 if ((subtest < 0) || (subtest >= __LLVM_TESTCASE_MAX))
168 return bpf_source_table[subtest].desc;