21f5a801c1
In the previous patch, the maximum data size for bpf_global_percpu_ma
is 512 bytes. This breaks selftest test_bpf_ma. The test is adjusted
in two aspects:
- Since the maximum allowed data size for bpf_global_percpu_ma is
512, remove all tests beyond that, names sizes 1024, 2048 and 4096.
- Previously the percpu data size is bucket_size - 8 in order to
avoid percpu allocation into the next bucket. This patch removed
such data size adjustment thanks to Patch 1.
Also, a better way to generate BTF type is used than adding
a member to the value struct.
Acked-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20231222031807.1292853-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
74 lines
2 KiB
C
74 lines
2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (C) 2023. Huawei Technologies Co., Ltd */
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#define _GNU_SOURCE
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#include <sched.h>
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#include <pthread.h>
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#include <stdbool.h>
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#include <bpf/btf.h>
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#include <test_progs.h>
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#include "test_bpf_ma.skel.h"
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static void do_bpf_ma_test(const char *name)
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{
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struct test_bpf_ma *skel;
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struct bpf_program *prog;
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struct btf *btf;
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int i, err, id;
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char tname[32];
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skel = test_bpf_ma__open();
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if (!ASSERT_OK_PTR(skel, "open"))
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return;
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btf = bpf_object__btf(skel->obj);
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if (!ASSERT_OK_PTR(btf, "btf"))
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goto out;
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for (i = 0; i < ARRAY_SIZE(skel->rodata->data_sizes); i++) {
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snprintf(tname, sizeof(tname), "bin_data_%u", skel->rodata->data_sizes[i]);
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id = btf__find_by_name_kind(btf, tname, BTF_KIND_STRUCT);
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if (!ASSERT_GT(id, 0, tname))
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goto out;
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skel->rodata->data_btf_ids[i] = id;
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}
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for (i = 0; i < ARRAY_SIZE(skel->rodata->percpu_data_sizes); i++) {
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snprintf(tname, sizeof(tname), "percpu_bin_data_%u", skel->rodata->percpu_data_sizes[i]);
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id = btf__find_by_name_kind(btf, tname, BTF_KIND_STRUCT);
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if (!ASSERT_GT(id, 0, tname))
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goto out;
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skel->rodata->percpu_data_btf_ids[i] = id;
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}
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prog = bpf_object__find_program_by_name(skel->obj, name);
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if (!ASSERT_OK_PTR(prog, "invalid prog name"))
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goto out;
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bpf_program__set_autoload(prog, true);
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err = test_bpf_ma__load(skel);
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if (!ASSERT_OK(err, "load"))
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goto out;
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err = test_bpf_ma__attach(skel);
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if (!ASSERT_OK(err, "attach"))
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goto out;
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skel->bss->pid = getpid();
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usleep(1);
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ASSERT_OK(skel->bss->err, "test error");
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out:
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test_bpf_ma__destroy(skel);
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}
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void test_test_bpf_ma(void)
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{
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if (test__start_subtest("batch_alloc_free"))
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do_bpf_ma_test("test_batch_alloc_free");
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if (test__start_subtest("free_through_map_free"))
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do_bpf_ma_test("test_free_through_map_free");
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if (test__start_subtest("batch_percpu_alloc_free"))
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do_bpf_ma_test("test_batch_percpu_alloc_free");
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if (test__start_subtest("percpu_free_through_map_free"))
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do_bpf_ma_test("test_percpu_free_through_map_free");
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}
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