#include <bpf/libbpf.h>
#include <util/llvm-utils.h>
#include <util/cache.h>
+#include "llvm.h"
#include "tests.h"
#include "debug.h"
return perf_default_config(var, val, arg);
}
-/*
- * Randomly give it a "version" section since we don't really load it
- * into kernel
- */
-static const char test_bpf_prog[] =
- "__attribute__((section(\"do_fork\"), used)) "
- "int fork(void *ctx) {return 0;} "
- "char _license[] __attribute__((section(\"license\"), used)) = \"GPL\";"
- "int _version __attribute__((section(\"version\"), used)) = 0x40100;";
-
#ifdef HAVE_LIBBPF_SUPPORT
static int test__bpf_parsing(void *obj_buf, size_t obj_buf_sz)
{
obj = bpf_object__open_buffer(obj_buf, obj_buf_sz, NULL);
if (IS_ERR(obj))
- return -1;
+ return TEST_FAIL;
bpf_object__close(obj);
- return 0;
+ return TEST_OK;
}
#else
static int test__bpf_parsing(void *obj_buf __maybe_unused,
size_t obj_buf_sz __maybe_unused)
{
pr_debug("Skip bpf parsing\n");
- return 0;
+ return TEST_OK;
}
#endif
-int test__llvm(void)
+static struct {
+ const char *source;
+ const char *desc;
+} bpf_source_table[__LLVM_TESTCASE_MAX] = {
+ [LLVM_TESTCASE_BASE] = {
+ .source = test_llvm__bpf_base_prog,
+ .desc = "Basic BPF llvm compiling test",
+ },
+};
+
+
+int
+test_llvm__fetch_bpf_obj(void **p_obj_buf,
+ size_t *p_obj_buf_sz,
+ enum test_llvm__testcase index,
+ bool force)
{
- char *tmpl_new, *clang_opt_new;
- void *obj_buf;
- size_t obj_buf_sz;
- int err, old_verbose;
+ const char *source;
+ const char *desc;
+ const char *tmpl_old, *clang_opt_old;
+ char *tmpl_new = NULL, *clang_opt_new = NULL;
+ int err, old_verbose, ret = TEST_FAIL;
+
+ if (index >= __LLVM_TESTCASE_MAX)
+ return TEST_FAIL;
+
+ source = bpf_source_table[index].source;
+ desc = bpf_source_table[index].desc;
perf_config(perf_config_cb, NULL);
* Skip this test if user's .perfconfig doesn't set [llvm] section
* and clang is not found in $PATH, and this is not perf test -v
*/
- if (verbose == 0 && !llvm_param.user_set_param && llvm__search_clang()) {
+ if (!force && (verbose == 0 &&
+ !llvm_param.user_set_param &&
+ llvm__search_clang())) {
pr_debug("No clang and no verbosive, skip this test\n");
return TEST_SKIP;
}
- old_verbose = verbose;
/*
* llvm is verbosity when error. Suppress all error output if
* not 'perf test -v'.
*/
+ old_verbose = verbose;
if (verbose == 0)
verbose = -1;
+ *p_obj_buf = NULL;
+ *p_obj_buf_sz = 0;
+
if (!llvm_param.clang_bpf_cmd_template)
- return -1;
+ goto out;
if (!llvm_param.clang_opt)
llvm_param.clang_opt = strdup("");
- err = asprintf(&tmpl_new, "echo '%s' | %s", test_bpf_prog,
- llvm_param.clang_bpf_cmd_template);
+ err = asprintf(&tmpl_new, "echo '%s' | %s%s", source,
+ llvm_param.clang_bpf_cmd_template,
+ old_verbose ? "" : " 2>/dev/null");
if (err < 0)
- return -1;
+ goto out;
err = asprintf(&clang_opt_new, "-xc %s", llvm_param.clang_opt);
if (err < 0)
- return -1;
+ goto out;
+ tmpl_old = llvm_param.clang_bpf_cmd_template;
llvm_param.clang_bpf_cmd_template = tmpl_new;
+ clang_opt_old = llvm_param.clang_opt;
llvm_param.clang_opt = clang_opt_new;
- err = llvm__compile_bpf("-", &obj_buf, &obj_buf_sz);
+
+ err = llvm__compile_bpf("-", p_obj_buf, p_obj_buf_sz);
+
+ llvm_param.clang_bpf_cmd_template = tmpl_old;
+ llvm_param.clang_opt = clang_opt_old;
verbose = old_verbose;
if (err)
- return TEST_FAIL;
+ goto out;
+
+ ret = TEST_OK;
+out:
+ free(tmpl_new);
+ free(clang_opt_new);
+ if (ret != TEST_OK)
+ pr_debug("Failed to compile test case: '%s'\n", desc);
+ return ret;
+}
- err = test__bpf_parsing(obj_buf, obj_buf_sz);
- free(obj_buf);
- return err;
+int test__llvm(void)
+{
+ enum test_llvm__testcase i;
+
+ for (i = 0; i < __LLVM_TESTCASE_MAX; i++) {
+ int ret;
+ void *obj_buf = NULL;
+ size_t obj_buf_sz = 0;
+
+ ret = test_llvm__fetch_bpf_obj(&obj_buf, &obj_buf_sz,
+ i, false);
+
+ if (ret == TEST_OK) {
+ ret = test__bpf_parsing(obj_buf, obj_buf_sz);
+ if (ret != TEST_OK)
+ pr_debug("Failed to parse test case '%s'\n",
+ bpf_source_table[i].desc);
+ }
+ free(obj_buf);
+
+ switch (ret) {
+ case TEST_SKIP:
+ return TEST_SKIP;
+ case TEST_OK:
+ break;
+ default:
+ /*
+ * Test 0 is the basic LLVM test. If test 0
+ * fail, the basic LLVM support not functional
+ * so the whole test should fail. If other test
+ * case fail, it can be fixed by adjusting
+ * config so don't report error.
+ */
+ if (i == 0)
+ return TEST_FAIL;
+ else
+ return TEST_SKIP;
+ }
+ }
+ return TEST_OK;
}
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