1 // SPDX-License-Identifier: GPL-2.0
8 #ifdef HAVE_LIBBPF_SUPPORT
9 #include <bpf/libbpf.h>
10 #include <util/llvm-utils.h>
12 static int test__bpf_parsing(void *obj_buf, size_t obj_buf_sz)
14 struct bpf_object *obj;
16 obj = bpf_object__open_buffer(obj_buf, obj_buf_sz, NULL);
17 if (libbpf_get_error(obj))
19 bpf_object__close(obj);
26 bool should_load_fail;
27 } bpf_source_table[__LLVM_TESTCASE_MAX] = {
28 [LLVM_TESTCASE_BASE] = {
29 .source = test_llvm__bpf_base_prog,
30 .desc = "Basic BPF llvm compile",
32 [LLVM_TESTCASE_KBUILD] = {
33 .source = test_llvm__bpf_test_kbuild_prog,
34 .desc = "kbuild searching",
36 [LLVM_TESTCASE_BPF_PROLOGUE] = {
37 .source = test_llvm__bpf_test_prologue_prog,
38 .desc = "Compile source for BPF prologue generation",
40 [LLVM_TESTCASE_BPF_RELOCATION] = {
41 .source = test_llvm__bpf_test_relocation,
42 .desc = "Compile source for BPF relocation",
43 .should_load_fail = true,
48 test_llvm__fetch_bpf_obj(void **p_obj_buf,
50 enum test_llvm__testcase idx,
52 bool *should_load_fail)
56 const char *tmpl_old, *clang_opt_old;
57 char *tmpl_new = NULL, *clang_opt_new = NULL;
58 int err, old_verbose, ret = TEST_FAIL;
60 if (idx >= __LLVM_TESTCASE_MAX)
63 source = bpf_source_table[idx].source;
64 desc = bpf_source_table[idx].desc;
66 *should_load_fail = bpf_source_table[idx].should_load_fail;
69 * Skip this test if user's .perfconfig doesn't set [llvm] section
70 * and clang is not found in $PATH, and this is not perf test -v
72 if (!force && (verbose <= 0 &&
73 !llvm_param.user_set_param &&
74 llvm__search_clang())) {
75 pr_debug("No clang and no verbosive, skip this test\n");
80 * llvm is verbosity when error. Suppress all error output if
83 old_verbose = verbose;
90 if (!llvm_param.clang_bpf_cmd_template)
93 if (!llvm_param.clang_opt)
94 llvm_param.clang_opt = strdup("");
96 err = asprintf(&tmpl_new, "echo '%s' | %s%s", source,
97 llvm_param.clang_bpf_cmd_template,
98 old_verbose ? "" : " 2>/dev/null");
101 err = asprintf(&clang_opt_new, "-xc %s", llvm_param.clang_opt);
105 tmpl_old = llvm_param.clang_bpf_cmd_template;
106 llvm_param.clang_bpf_cmd_template = tmpl_new;
107 clang_opt_old = llvm_param.clang_opt;
108 llvm_param.clang_opt = clang_opt_new;
110 err = llvm__compile_bpf("-", p_obj_buf, p_obj_buf_sz);
112 llvm_param.clang_bpf_cmd_template = tmpl_old;
113 llvm_param.clang_opt = clang_opt_old;
115 verbose = old_verbose;
124 pr_debug("Failed to compile test case: '%s'\n", desc);
128 int test__llvm(struct test *test __maybe_unused, int subtest)
131 void *obj_buf = NULL;
132 size_t obj_buf_sz = 0;
133 bool should_load_fail = false;
135 if ((subtest < 0) || (subtest >= __LLVM_TESTCASE_MAX))
138 ret = test_llvm__fetch_bpf_obj(&obj_buf, &obj_buf_sz,
139 subtest, false, &should_load_fail);
141 if (ret == TEST_OK && !should_load_fail) {
142 ret = test__bpf_parsing(obj_buf, obj_buf_sz);
143 if (ret != TEST_OK) {
144 pr_debug("Failed to parse test case '%s'\n",
145 bpf_source_table[subtest].desc);
153 int test__llvm_subtest_get_nr(void)
155 return __LLVM_TESTCASE_MAX;
158 const char *test__llvm_subtest_get_desc(int subtest)
160 if ((subtest < 0) || (subtest >= __LLVM_TESTCASE_MAX))
163 return bpf_source_table[subtest].desc;
165 #else //HAVE_LIBBPF_SUPPORT
166 int test__llvm(struct test *test __maybe_unused, int subtest __maybe_unused)
171 int test__llvm_subtest_get_nr(void)
176 const char *test__llvm_subtest_get_desc(int subtest __maybe_unused)
180 #endif // HAVE_LIBBPF_SUPPORT