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-rw-r--r--tools/perf/tests/bpf.c93
1 files changed, 73 insertions, 20 deletions
diff --git a/tools/perf/tests/bpf.c b/tools/perf/tests/bpf.c
index ec16f7812c8b..33689a0cf821 100644
--- a/tools/perf/tests/bpf.c
+++ b/tools/perf/tests/bpf.c
@@ -19,6 +19,29 @@ static int epoll_pwait_loop(void)
return 0;
}
+#ifdef HAVE_BPF_PROLOGUE
+
+static int llseek_loop(void)
+{
+ int fds[2], i;
+
+ fds[0] = open("/dev/null", O_RDONLY);
+ fds[1] = open("/dev/null", O_RDWR);
+
+ if (fds[0] < 0 || fds[1] < 0)
+ return -1;
+
+ for (i = 0; i < NR_ITERS; i++) {
+ lseek(fds[i % 2], i, (i / 2) % 2 ? SEEK_CUR : SEEK_SET);
+ lseek(fds[(i + 1) % 2], i, (i / 2) % 2 ? SEEK_CUR : SEEK_SET);
+ }
+ close(fds[0]);
+ close(fds[1]);
+ return 0;
+}
+
+#endif
+
static struct {
enum test_llvm__testcase prog_id;
const char *desc;
@@ -37,6 +60,17 @@ static struct {
&epoll_pwait_loop,
(NR_ITERS + 1) / 2,
},
+#ifdef HAVE_BPF_PROLOGUE
+ {
+ LLVM_TESTCASE_BPF_PROLOGUE,
+ "Test BPF prologue generation",
+ "[bpf_prologue_test]",
+ "fix kbuild first",
+ "check your vmlinux setting?",
+ &llseek_loop,
+ (NR_ITERS + 1) / 4,
+ },
+#endif
};
static int do_test(struct bpf_object *obj, int (*func)(void),
@@ -68,8 +102,7 @@ static int do_test(struct bpf_object *obj, int (*func)(void),
err = parse_events_load_bpf_obj(&parse_evlist, &parse_evlist.list, obj);
if (err || list_empty(&parse_evlist.list)) {
pr_debug("Failed to add events selected by BPF\n");
- if (!err)
- return TEST_FAIL;
+ return TEST_FAIL;
}
snprintf(pid, sizeof(pid), "%d", getpid());
@@ -123,8 +156,10 @@ static int do_test(struct bpf_object *obj, int (*func)(void),
}
}
- if (count != expect)
+ if (count != expect) {
pr_debug("BPF filter result incorrect\n");
+ goto out_delete_evlist;
+ }
ret = TEST_OK;
@@ -146,7 +181,7 @@ prepare_bpf(void *obj_buf, size_t obj_buf_sz, const char *name)
return obj;
}
-static int __test__bpf(int index)
+static int __test__bpf(int idx)
{
int ret;
void *obj_buf;
@@ -154,54 +189,72 @@ static int __test__bpf(int index)
struct bpf_object *obj;
ret = test_llvm__fetch_bpf_obj(&obj_buf, &obj_buf_sz,
- bpf_testcase_table[index].prog_id,
+ bpf_testcase_table[idx].prog_id,
true);
if (ret != TEST_OK || !obj_buf || !obj_buf_sz) {
pr_debug("Unable to get BPF object, %s\n",
- bpf_testcase_table[index].msg_compile_fail);
- if (index == 0)
+ bpf_testcase_table[idx].msg_compile_fail);
+ if (idx == 0)
return TEST_SKIP;
else
return TEST_FAIL;
}
obj = prepare_bpf(obj_buf, obj_buf_sz,
- bpf_testcase_table[index].name);
+ bpf_testcase_table[idx].name);
if (!obj) {
ret = TEST_FAIL;
goto out;
}
ret = do_test(obj,
- bpf_testcase_table[index].target_func,
- bpf_testcase_table[index].expect_result);
+ bpf_testcase_table[idx].target_func,
+ bpf_testcase_table[idx].expect_result);
out:
bpf__clear();
return ret;
}
-int test__bpf(void)
+int test__bpf_subtest_get_nr(void)
+{
+ return (int)ARRAY_SIZE(bpf_testcase_table);
+}
+
+const char *test__bpf_subtest_get_desc(int i)
+{
+ if (i < 0 || i >= (int)ARRAY_SIZE(bpf_testcase_table))
+ return NULL;
+ return bpf_testcase_table[i].desc;
+}
+
+int test__bpf(int i)
{
- unsigned int i;
int err;
+ if (i < 0 || i >= (int)ARRAY_SIZE(bpf_testcase_table))
+ return TEST_FAIL;
+
if (geteuid() != 0) {
pr_debug("Only root can run BPF test\n");
return TEST_SKIP;
}
- for (i = 0; i < ARRAY_SIZE(bpf_testcase_table); i++) {
- err = __test__bpf(i);
+ err = __test__bpf(i);
+ return err;
+}
- if (err != TEST_OK)
- return err;
- }
+#else
+int test__bpf_subtest_get_nr(void)
+{
+ return 0;
+}
- return TEST_OK;
+const char *test__bpf_subtest_get_desc(int i __maybe_unused)
+{
+ return NULL;
}
-#else
-int test__bpf(void)
+int test__bpf(int i __maybe_unused)
{
pr_debug("Skip BPF test because BPF support is not compiled\n");
return TEST_SKIP;