179 lines
4.1 KiB
C
179 lines
4.1 KiB
C
#include <stdio.h>
|
|
#include <bpf/libbpf.h>
|
|
#include <util/llvm-utils.h>
|
|
#include <util/cache.h>
|
|
#include "llvm.h"
|
|
#include "tests.h"
|
|
#include "debug.h"
|
|
|
|
static int perf_config_cb(const char *var, const char *val,
|
|
void *arg __maybe_unused)
|
|
{
|
|
return perf_default_config(var, val, arg);
|
|
}
|
|
|
|
#ifdef HAVE_LIBBPF_SUPPORT
|
|
static int test__bpf_parsing(void *obj_buf, size_t obj_buf_sz)
|
|
{
|
|
struct bpf_object *obj;
|
|
|
|
obj = bpf_object__open_buffer(obj_buf, obj_buf_sz, NULL);
|
|
if (IS_ERR(obj))
|
|
return TEST_FAIL;
|
|
bpf_object__close(obj);
|
|
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 TEST_OK;
|
|
}
|
|
#endif
|
|
|
|
static struct {
|
|
const char *source;
|
|
const char *desc;
|
|
bool should_load_fail;
|
|
} bpf_source_table[__LLVM_TESTCASE_MAX] = {
|
|
[LLVM_TESTCASE_BASE] = {
|
|
.source = test_llvm__bpf_base_prog,
|
|
.desc = "Basic BPF llvm compiling test",
|
|
},
|
|
[LLVM_TESTCASE_KBUILD] = {
|
|
.source = test_llvm__bpf_test_kbuild_prog,
|
|
.desc = "Test kbuild searching",
|
|
},
|
|
[LLVM_TESTCASE_BPF_PROLOGUE] = {
|
|
.source = test_llvm__bpf_test_prologue_prog,
|
|
.desc = "Compile source for BPF prologue generation test",
|
|
},
|
|
[LLVM_TESTCASE_BPF_RELOCATION] = {
|
|
.source = test_llvm__bpf_test_relocation,
|
|
.desc = "Compile source for BPF relocation test",
|
|
.should_load_fail = true,
|
|
},
|
|
};
|
|
|
|
int
|
|
test_llvm__fetch_bpf_obj(void **p_obj_buf,
|
|
size_t *p_obj_buf_sz,
|
|
enum test_llvm__testcase idx,
|
|
bool force,
|
|
bool *should_load_fail)
|
|
{
|
|
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 (idx >= __LLVM_TESTCASE_MAX)
|
|
return TEST_FAIL;
|
|
|
|
source = bpf_source_table[idx].source;
|
|
desc = bpf_source_table[idx].desc;
|
|
if (should_load_fail)
|
|
*should_load_fail = bpf_source_table[idx].should_load_fail;
|
|
|
|
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 (!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;
|
|
}
|
|
|
|
/*
|
|
* 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)
|
|
goto out;
|
|
|
|
if (!llvm_param.clang_opt)
|
|
llvm_param.clang_opt = strdup("");
|
|
|
|
err = asprintf(&tmpl_new, "echo '%s' | %s%s", source,
|
|
llvm_param.clang_bpf_cmd_template,
|
|
old_verbose ? "" : " 2>/dev/null");
|
|
if (err < 0)
|
|
goto out;
|
|
err = asprintf(&clang_opt_new, "-xc %s", llvm_param.clang_opt);
|
|
if (err < 0)
|
|
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("-", 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)
|
|
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;
|
|
}
|
|
|
|
int test__llvm(int subtest)
|
|
{
|
|
int ret;
|
|
void *obj_buf = NULL;
|
|
size_t obj_buf_sz = 0;
|
|
bool should_load_fail = false;
|
|
|
|
if ((subtest < 0) || (subtest >= __LLVM_TESTCASE_MAX))
|
|
return TEST_FAIL;
|
|
|
|
ret = test_llvm__fetch_bpf_obj(&obj_buf, &obj_buf_sz,
|
|
subtest, false, &should_load_fail);
|
|
|
|
if (ret == TEST_OK && !should_load_fail) {
|
|
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[subtest].desc);
|
|
}
|
|
}
|
|
free(obj_buf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int test__llvm_subtest_get_nr(void)
|
|
{
|
|
return __LLVM_TESTCASE_MAX;
|
|
}
|
|
|
|
const char *test__llvm_subtest_get_desc(int subtest)
|
|
{
|
|
if ((subtest < 0) || (subtest >= __LLVM_TESTCASE_MAX))
|
|
return NULL;
|
|
|
|
return bpf_source_table[subtest].desc;
|
|
}
|