90 lines · c
1// SPDX-License-Identifier: GPL-2.02/* Copyright (C) 2023. Huawei Technologies Co., Ltd */3#define _GNU_SOURCE4#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 412#define ALLOC_LOOP_NR 51213 14struct alloc_ctx {15 /* output */16 int run_err;17 /* input */18 int fd;19 bool *nomem_err;20};21 22static 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 43void 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");87out:88 preempted_bpf_ma_op__destroy(skel);89}90