2 #include <bpf/libbpf.h>
3 #include <util/llvm-utils.h>
4 #include <util/cache.h>
10 #ifdef HAVE_LIBBPF_SUPPORT
11 static int test__bpf_parsing(void *obj_buf, size_t obj_buf_sz)
13 struct bpf_object *obj;
15 obj = bpf_object__open_buffer(obj_buf, obj_buf_sz, NULL);
18 bpf_object__close(obj);
22 static int test__bpf_parsing(void *obj_buf __maybe_unused,
23 size_t obj_buf_sz __maybe_unused)
25 pr_debug("Skip bpf parsing\n");
33 bool should_load_fail;
34 } bpf_source_table[__LLVM_TESTCASE_MAX] = {
35 [LLVM_TESTCASE_BASE] = {
36 .source = test_llvm__bpf_base_prog,
37 .desc = "Basic BPF llvm compile",
39 [LLVM_TESTCASE_KBUILD] = {
40 .source = test_llvm__bpf_test_kbuild_prog,
41 .desc = "kbuild searching",
43 [LLVM_TESTCASE_BPF_PROLOGUE] = {
44 .source = test_llvm__bpf_test_prologue_prog,
45 .desc = "Compile source for BPF prologue generation",
47 [LLVM_TESTCASE_BPF_RELOCATION] = {
48 .source = test_llvm__bpf_test_relocation,
49 .desc = "Compile source for BPF relocation",
50 .should_load_fail = true,
55 test_llvm__fetch_bpf_obj(void **p_obj_buf,
57 enum test_llvm__testcase idx,
59 bool *should_load_fail)
63 const char *tmpl_old, *clang_opt_old;
64 char *tmpl_new = NULL, *clang_opt_new = NULL;
65 int err, old_verbose, ret = TEST_FAIL;
67 if (idx >= __LLVM_TESTCASE_MAX)
70 source = bpf_source_table[idx].source;
71 desc = bpf_source_table[idx].desc;
73 *should_load_fail = bpf_source_table[idx].should_load_fail;
76 * Skip this test if user's .perfconfig doesn't set [llvm] section
77 * and clang is not found in $PATH, and this is not perf test -v
79 if (!force && (verbose == 0 &&
80 !llvm_param.user_set_param &&
81 llvm__search_clang())) {
82 pr_debug("No clang and no verbosive, skip this test\n");
87 * llvm is verbosity when error. Suppress all error output if
90 old_verbose = verbose;
97 if (!llvm_param.clang_bpf_cmd_template)
100 if (!llvm_param.clang_opt)
101 llvm_param.clang_opt = strdup("");
103 err = asprintf(&tmpl_new, "echo '%s' | %s%s", source,
104 llvm_param.clang_bpf_cmd_template,
105 old_verbose ? "" : " 2>/dev/null");
108 err = asprintf(&clang_opt_new, "-xc %s", llvm_param.clang_opt);
112 tmpl_old = llvm_param.clang_bpf_cmd_template;
113 llvm_param.clang_bpf_cmd_template = tmpl_new;
114 clang_opt_old = llvm_param.clang_opt;
115 llvm_param.clang_opt = clang_opt_new;
117 err = llvm__compile_bpf("-", p_obj_buf, p_obj_buf_sz);
119 llvm_param.clang_bpf_cmd_template = tmpl_old;
120 llvm_param.clang_opt = clang_opt_old;
122 verbose = old_verbose;
131 pr_debug("Failed to compile test case: '%s'\n", desc);
135 int test__llvm(int subtest)
138 void *obj_buf = NULL;
139 size_t obj_buf_sz = 0;
140 bool should_load_fail = false;
142 if ((subtest < 0) || (subtest >= __LLVM_TESTCASE_MAX))
145 ret = test_llvm__fetch_bpf_obj(&obj_buf, &obj_buf_sz,
146 subtest, false, &should_load_fail);
148 if (ret == TEST_OK && !should_load_fail) {
149 ret = test__bpf_parsing(obj_buf, obj_buf_sz);
150 if (ret != TEST_OK) {
151 pr_debug("Failed to parse test case '%s'\n",
152 bpf_source_table[subtest].desc);
160 int test__llvm_subtest_get_nr(void)
162 return __LLVM_TESTCASE_MAX;
165 const char *test__llvm_subtest_get_desc(int subtest)
167 if ((subtest < 0) || (subtest >= __LLVM_TESTCASE_MAX))
170 return bpf_source_table[subtest].desc;