From ed7c13776e20c74486b0939a3c1de984c5efb6aa Mon Sep 17 00:00:00 2001 From: Feng Zhou Date: Wed, 11 May 2022 17:38:54 +0800 Subject: selftests/bpf: add test case for bpf_map_lookup_percpu_elem test_progs: Tests new ebpf helpers bpf_map_lookup_percpu_elem. Signed-off-by: Feng Zhou Link: https://lore.kernel.org/r/20220511093854.411-3-zhoufeng.zf@bytedance.com Signed-off-by: Alexei Starovoitov --- .../bpf/prog_tests/map_lookup_percpu_elem.c | 46 ++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 tools/testing/selftests/bpf/prog_tests/map_lookup_percpu_elem.c (limited to 'tools/testing/selftests/bpf/prog_tests') diff --git a/tools/testing/selftests/bpf/prog_tests/map_lookup_percpu_elem.c b/tools/testing/selftests/bpf/prog_tests/map_lookup_percpu_elem.c new file mode 100644 index 000000000000..58b24c2112b0 --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/map_lookup_percpu_elem.c @@ -0,0 +1,46 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2022 Bytedance + +#include + +#include "test_map_lookup_percpu_elem.skel.h" + +#define TEST_VALUE 1 + +void test_map_lookup_percpu_elem(void) +{ + struct test_map_lookup_percpu_elem *skel; + int key = 0, ret; + int nr_cpus = sysconf(_SC_NPROCESSORS_ONLN); + int *buf; + + buf = (int *)malloc(nr_cpus*sizeof(int)); + if (!ASSERT_OK_PTR(buf, "malloc")) + return; + memset(buf, 0, nr_cpus*sizeof(int)); + buf[0] = TEST_VALUE; + + skel = test_map_lookup_percpu_elem__open_and_load(); + if (!ASSERT_OK_PTR(skel, "test_map_lookup_percpu_elem__open_and_load")) + return; + ret = test_map_lookup_percpu_elem__attach(skel); + ASSERT_OK(ret, "test_map_lookup_percpu_elem__attach"); + + 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); + + ret = skel->bss->percpu_array_elem_val == TEST_VALUE && + skel->bss->percpu_hash_elem_val == TEST_VALUE && + skel->bss->percpu_lru_hash_elem_val == TEST_VALUE; + ASSERT_OK(!ret, "bpf_map_lookup_percpu_elem success"); + + test_map_lookup_percpu_elem__destroy(skel); +} -- cgit v1.2.3