1// SPDX-License-Identifier: GPL-2.0
2/* Copyright (c) 2021 Facebook */
3#include <test_progs.h>
4#include "timer.skel.h"
5#include "timer_failure.skel.h"
6
7#define NUM_THR 8
8
9static void *spin_lock_thread(void *arg)
10{
11	int i, err, prog_fd = *(int *)arg;
12	LIBBPF_OPTS(bpf_test_run_opts, topts);
13
14	for (i = 0; i < 10000; i++) {
15		err = bpf_prog_test_run_opts(prog_fd, &topts);
16		if (!ASSERT_OK(err, "test_run_opts err") ||
17		    !ASSERT_OK(topts.retval, "test_run_opts retval"))
18			break;
19	}
20
21	pthread_exit(arg);
22}
23
24static int timer(struct timer *timer_skel)
25{
26	int i, err, prog_fd;
27	LIBBPF_OPTS(bpf_test_run_opts, topts);
28	pthread_t thread_id[NUM_THR];
29	void *ret;
30
31	err = timer__attach(timer_skel);
32	if (!ASSERT_OK(err, "timer_attach"))
33		return err;
34
35	ASSERT_EQ(timer_skel->data->callback_check, 52, "callback_check1");
36	ASSERT_EQ(timer_skel->data->callback2_check, 52, "callback2_check1");
37	ASSERT_EQ(timer_skel->bss->pinned_callback_check, 0, "pinned_callback_check1");
38
39	prog_fd = bpf_program__fd(timer_skel->progs.test1);
40	err = bpf_prog_test_run_opts(prog_fd, &topts);
41	ASSERT_OK(err, "test_run");
42	ASSERT_EQ(topts.retval, 0, "test_run");
43	timer__detach(timer_skel);
44
45	usleep(50); /* 10 usecs should be enough, but give it extra */
46	/* check that timer_cb1() was executed 10+10 times */
47	ASSERT_EQ(timer_skel->data->callback_check, 42, "callback_check2");
48	ASSERT_EQ(timer_skel->data->callback2_check, 42, "callback2_check2");
49
50	/* check that timer_cb2() was executed twice */
51	ASSERT_EQ(timer_skel->bss->bss_data, 10, "bss_data");
52
53	/* check that timer_cb3() was executed twice */
54	ASSERT_EQ(timer_skel->bss->abs_data, 12, "abs_data");
55
56	/* check that timer_cb_pinned() was executed twice */
57	ASSERT_EQ(timer_skel->bss->pinned_callback_check, 2, "pinned_callback_check");
58
59	/* check that there were no errors in timer execution */
60	ASSERT_EQ(timer_skel->bss->err, 0, "err");
61
62	/* check that code paths completed */
63	ASSERT_EQ(timer_skel->bss->ok, 1 | 2 | 4, "ok");
64
65	prog_fd = bpf_program__fd(timer_skel->progs.race);
66	for (i = 0; i < NUM_THR; i++) {
67		err = pthread_create(&thread_id[i], NULL,
68				     &spin_lock_thread, &prog_fd);
69		if (!ASSERT_OK(err, "pthread_create"))
70			break;
71	}
72
73	while (i) {
74		err = pthread_join(thread_id[--i], &ret);
75		if (ASSERT_OK(err, "pthread_join"))
76			ASSERT_EQ(ret, (void *)&prog_fd, "pthread_join");
77	}
78
79	return 0;
80}
81
82/* TODO: use pid filtering */
83void serial_test_timer(void)
84{
85	struct timer *timer_skel = NULL;
86	int err;
87
88	timer_skel = timer__open_and_load();
89	if (!ASSERT_OK_PTR(timer_skel, "timer_skel_load"))
90		return;
91
92	err = timer(timer_skel);
93	ASSERT_OK(err, "timer");
94	timer__destroy(timer_skel);
95
96	RUN_TESTS(timer_failure);
97}
98