diff options
| author | Andrii Nakryiko <andrii@kernel.org> | 2021-01-11 23:55:20 -0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2021-01-12 17:24:30 -0800 |
| commit | 430d97a8a7bf1500c081ce756ff2ead73d2303c5 (patch) | |
| tree | 348ac2808f0006934b49aa2f472b7d069af710ba /tools/testing/selftests/bpf/prog_tests/ksyms_module.c | |
| parent | 284d2587ea8a96f97ca519a3de683ff226e9e2b3 (diff) | |
selftests/bpf: Test kernel module ksym externs
Add per-CPU variable to bpf_testmod.ko and use those from new selftest to
validate it works end-to-end.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Acked-by: Hao Luo <haoluo@google.com>
Link: https://lore.kernel.org/bpf/20210112075520.4103414-8-andrii@kernel.org
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/ksyms_module.c')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/ksyms_module.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/ksyms_module.c b/tools/testing/selftests/bpf/prog_tests/ksyms_module.c new file mode 100644 index 000000000000..4c232b456479 --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/ksyms_module.c @@ -0,0 +1,31 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2021 Facebook */ + +#include <test_progs.h> +#include <bpf/libbpf.h> +#include <bpf/btf.h> +#include "test_ksyms_module.skel.h" + +static int duration; + +void test_ksyms_module(void) +{ + struct test_ksyms_module* skel; + int err; + + skel = test_ksyms_module__open_and_load(); + if (CHECK(!skel, "skel_open", "failed to open skeleton\n")) + return; + + err = test_ksyms_module__attach(skel); + if (CHECK(err, "skel_attach", "skeleton attach failed: %d\n", err)) + goto cleanup; + + usleep(1); + + ASSERT_EQ(skel->bss->triggered, true, "triggered"); + ASSERT_EQ(skel->bss->out_mod_ksym_global, 123, "global_ksym_val"); + +cleanup: + test_ksyms_module__destroy(skel); +} |