// SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2022 Bytedance */ #include <test_progs.h> #include "test_map_lookup_percpu_elem.skel.h" void test_map_lookup_percpu_elem(void) { struct test_map_lookup_percpu_elem *skel; __u64 key = 0, sum; int ret, i, nr_cpus = libbpf_num_possible_cpus(); __u64 *buf; buf = malloc(nr_cpus*sizeof(__u64)); if (!ASSERT_OK_PTR(buf, "malloc")) return; for (i = 0; i < nr_cpus; i++) buf[i] = i; sum = (nr_cpus - 1) * nr_cpus / 2; skel = test_map_lookup_percpu_elem__open(); if (!ASSERT_OK_PTR(skel, "test_map_lookup_percpu_elem__open")) goto exit; skel->rodata->my_pid = getpid(); skel->rodata->nr_cpus = nr_cpus; ret = test_map_lookup_percpu_elem__load(skel); if (!ASSERT_OK(ret, "test_map_lookup_percpu_elem__load")) goto cleanup; ret = test_map_lookup_percpu_elem__attach(skel); if (!ASSERT_OK(ret, "test_map_lookup_percpu_elem__attach")) goto cleanup; ret = bpf_map_update_elem(bpf_map__fd(skel->maps.percpu_array_map), &key, buf, 0); ASSERT_OK(ret, "percpu_array_map update"); ret = bpf_map_update_elem(bpf_map__fd(skel->maps.percpu_hash_map), &key, buf, 0); ASSERT_OK(ret, "percpu_hash_map update"); ret = bpf_map_update_elem(bpf_map__fd(skel->maps.percpu_lru_hash_map), &key, buf, 0); ASSERT_OK(ret, "percpu_lru_hash_map update"); syscall(__NR_getuid); test_map_lookup_percpu_elem__detach(skel); ASSERT_EQ(skel->bss->percpu_array_elem_sum, sum, "percpu_array lookup percpu elem"); ASSERT_EQ(skel->bss->percpu_hash_elem_sum, sum, "percpu_hash lookup percpu elem"); ASSERT_EQ(skel->bss->percpu_lru_hash_elem_sum, sum, "percpu_lru_hash lookup percpu elem"); cleanup: test_map_lookup_percpu_elem__destroy(skel); exit: free(buf); }