1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (C) 2023. Huawei Technologies Co., Ltd */
3 #define _GNU_SOURCE
4 #include <sched.h>
5 #include <pthread.h>
6 #include <stdbool.h>
7 #include <test_progs.h>
8
9 #include "preempted_bpf_ma_op.skel.h"
10
11 #define ALLOC_THREAD_NR 4
12 #define ALLOC_LOOP_NR 512
13
14 struct alloc_ctx {
15 /* output */
16 int run_err;
17 /* input */
18 int fd;
19 bool *nomem_err;
20 };
21
22 static void *run_alloc_prog(void *data)
23 {
24 struct alloc_ctx *ctx = data;
25 cpu_set_t cpu_set;
26 int i;
27
28 CPU_ZERO(&cpu_set);
29 CPU_SET(0, &cpu_set);
30 pthread_setaffinity_np(pthread_self(), sizeof(cpu_set), &cpu_set);
31
32 for (i = 0; i < ALLOC_LOOP_NR && !*ctx->nomem_err; i++) {
33 LIBBPF_OPTS(bpf_test_run_opts, topts);
34 int err;
35
36 err = bpf_prog_test_run_opts(ctx->fd, &topts);
37 ctx->run_err |= err | topts.retval;
38 }
39
40 return NULL;
41 }
42
43 void test_preempted_bpf_ma_op(void)
44 {
45 struct alloc_ctx ctx[ALLOC_THREAD_NR];
46 struct preempted_bpf_ma_op *skel;
47 pthread_t tid[ALLOC_THREAD_NR];
48 int i, err;
49
50 skel = preempted_bpf_ma_op__open_and_load();
51 if (!ASSERT_OK_PTR(skel, "open_and_load"))
52 return;
53
54 err = preempted_bpf_ma_op__attach(skel);
55 if (!ASSERT_OK(err, "attach"))
56 goto out;
57
58 for (i = 0; i < ARRAY_SIZE(ctx); i++) {
59 struct bpf_program *prog;
60 char name[8];
61
62 snprintf(name, sizeof(name), "test%d", i);
63 prog = bpf_object__find_program_by_name(skel->obj, name);
64 if (!ASSERT_OK_PTR(prog, "no test prog"))
65 goto out;
66
67 ctx[i].run_err = 0;
68 ctx[i].fd = bpf_program__fd(prog);
69 ctx[i].nomem_err = &skel->bss->nomem_err;
70 }
71
72 memset(tid, 0, sizeof(tid));
73 for (i = 0; i < ARRAY_SIZE(tid); i++) {
74 err = pthread_create(&tid[i], NULL, run_alloc_prog, &ctx[i]);
75 if (!ASSERT_OK(err, "pthread_create"))
76 break;
77 }
78
79 for (i = 0; i < ARRAY_SIZE(tid); i++) {
80 if (!tid[i])
81 break;
82 pthread_join(tid[i], NULL);
83 ASSERT_EQ(ctx[i].run_err, 0, "run prog err");
84 }
85
86 ASSERT_FALSE(skel->bss->nomem_err, "ENOMEM");
87 out:
88 preempted_bpf_ma_op__destroy(skel);
89 }
90
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