Thread (1 message) 1 message, 1 author, 2021-01-12

Re: [PATCH bpf-next 2/4] selftests/bpf: add non-BPF_LSM test for task local storage

From: Andrii Nakryiko <hidden>
Date: 2021-01-12 07:07:37
Also in: bpf, lkml

On Fri, Jan 8, 2021 at 3:30 PM Song Liu [off-list ref] wrote:
quoted hunk
Task local storage is enabled for tracing programs. Add a test for it
without CONFIG_BPF_LSM.

Signed-off-by: Song Liu <redacted>
---
 .../bpf/prog_tests/test_task_local_storage.c  | 34 +++++++++++++++++
 .../selftests/bpf/progs/task_local_storage.c  | 37 +++++++++++++++++++
 2 files changed, 71 insertions(+)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/test_task_local_storage.c
 create mode 100644 tools/testing/selftests/bpf/progs/task_local_storage.c
diff --git a/tools/testing/selftests/bpf/prog_tests/test_task_local_storage.c b/tools/testing/selftests/bpf/prog_tests/test_task_local_storage.c
new file mode 100644
index 0000000000000..7de7a154ebbe6
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/test_task_local_storage.c
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2020 Facebook */
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <test_progs.h>
+#include "task_local_storage.skel.h"
+
+static unsigned int duration;
+
+void test_test_task_local_storage(void)
nit: let's not use "test_test_" tautology. It can be simply
test_task_local_storage() and this file itself should be called
task_local_storage.c.
+{
+       struct task_local_storage *skel;
+       const int count = 10;
+       int i, err;
+
+       skel = task_local_storage__open_and_load();
+
+       if (CHECK(!skel, "skel_open_and_load", "skeleton open and load failed\n"))
btw, can you ASSERT_OK_PTR(skel, "skel_open_and_load"); and save
yourself a bunch of typing
+               return;
+
+       err = task_local_storage__attach(skel);
+
+       if (CHECK(err, "skel_attach", "skeleton attach failed\n"))
+               goto out;
similarly, ASSERT_OK(err, "skel_attach")
+
+       for (i = 0; i < count; i++)
+               usleep(1000);
+       CHECK(skel->bss->value < count, "task_local_storage_value",
+             "task local value too small\n");
+
+out:
+       task_local_storage__destroy(skel);
+}
[...]
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