@@ -61,9 +61,10 @@ void test_test_overhead(void)
const char *raw_tp_name = "prog3";
const char *fentry_name = "prog4";
const char *fexit_name = "prog5";
+ const char *tp_name = "prog6";
const char *kprobe_func = "__set_task_comm";
struct bpf_program *kprobe_prog, *kretprobe_prog, *raw_tp_prog;
- struct bpf_program *fentry_prog, *fexit_prog;
+ struct bpf_program *fentry_prog, *fexit_prog, *tp_prog;
struct bpf_object *obj;
struct bpf_link *link;
int err, duration = 0;
@@ -96,6 +97,10 @@ void test_test_overhead(void)
if (CHECK(!fexit_prog, "find_probe",
"prog '%s' not found\n", fexit_name))
goto cleanup;
+ tp_prog = bpf_object__find_program_by_name(obj, tp_name);
+ if (CHECK(!tp_prog, "find_probe",
+ "prog '%s' not found\n", tp_name))
+ goto cleanup;
err = bpf_object__load(obj);
if (CHECK(err, "obj_load", "err %d\n", err))
goto cleanup;
@@ -142,6 +147,13 @@ void test_test_overhead(void)
test_run("fexit");
bpf_link__destroy(link);
+ /* attach tp */
+ link = bpf_program__attach_tracepoint(tp_prog, "task", "task_rename");
+ if (!ASSERT_OK_PTR(link, "attach_tp"))
+ goto cleanup;
+ test_run("tp");
+ bpf_link__destroy(link);
+
cleanup:
prctl(PR_SET_NAME, comm, 0L, 0L, 0L);
bpf_object__close(obj);
@@ -1,9 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2019 Facebook */
-#include <stdbool.h>
-#include <stddef.h>
-#include <linux/bpf.h>
-#include <linux/ptrace.h>
+#include "vmlinux.h"
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
@@ -39,4 +36,10 @@ int BPF_PROG(prog5, struct task_struct *tsk, const char *buf, bool exec)
return 0;
}
+SEC("tracepoint/task/task_rename")
+int prog6(struct trace_event_raw_task_rename *ctx)
+{
+ return 0;
+}
+
char _license[] SEC("license") = "GPL";
As part of the cleanup of outdated test cases in sample/bpf, this commit migrates test for tracepoint overhead to selftest prog_tests. The test_overhead in selftest/bpf focus on the 'raw_tracepoint' only, and do not cover tracepoint-specific tests. To support this, this commit utilize 'vmlinux.h', and additional test program for tracepoint has been added. Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> --- .../selftests/bpf/prog_tests/test_overhead.c | 14 +++++++++++++- tools/testing/selftests/bpf/progs/test_overhead.c | 11 +++++++---- 2 files changed, 20 insertions(+), 5 deletions(-)