mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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3e689141e6
Fix all selftests to include libbpf header files with the bpf/ prefix, to
be consistent with external users of the library. Also ensure that all
includes of exported libbpf header files (those that are exported on 'make
install' of the library) use bracketed includes instead of quoted.
To not break the build, keep the old include path until everything has been
changed to the new one; a subsequent patch will remove that.
Fixes: 6910d7d386 ("selftests/bpf: Ensure bpf_helper_defs.h are taken from selftests dir")
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/157952560568.1683545.9649335788846513446.stgit@toke.dk
62 lines
1.2 KiB
C
62 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (c) 2019 Facebook
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#include <linux/bpf.h>
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#include <linux/version.h>
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#include <bpf/bpf_helpers.h>
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#define VAR_NUM 16
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struct hmap_elem {
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struct bpf_spin_lock lock;
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int var[VAR_NUM];
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};
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struct {
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__uint(type, BPF_MAP_TYPE_HASH);
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__uint(max_entries, 1);
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__type(key, __u32);
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__type(value, struct hmap_elem);
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} hash_map SEC(".maps");
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struct array_elem {
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struct bpf_spin_lock lock;
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int var[VAR_NUM];
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};
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struct {
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__uint(type, BPF_MAP_TYPE_ARRAY);
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__uint(max_entries, 1);
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__type(key, int);
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__type(value, struct array_elem);
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} array_map SEC(".maps");
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SEC("map_lock_demo")
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int bpf_map_lock_test(struct __sk_buff *skb)
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{
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struct hmap_elem zero = {}, *val;
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int rnd = bpf_get_prandom_u32();
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int key = 0, err = 1, i;
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struct array_elem *q;
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val = bpf_map_lookup_elem(&hash_map, &key);
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if (!val)
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goto err;
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/* spin_lock in hash map */
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bpf_spin_lock(&val->lock);
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for (i = 0; i < VAR_NUM; i++)
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val->var[i] = rnd;
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bpf_spin_unlock(&val->lock);
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/* spin_lock in array */
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q = bpf_map_lookup_elem(&array_map, &key);
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if (!q)
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goto err;
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bpf_spin_lock(&q->lock);
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for (i = 0; i < VAR_NUM; i++)
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q->var[i] = rnd;
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bpf_spin_unlock(&q->lock);
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err = 0;
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err:
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return err;
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}
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char _license[] SEC("license") = "GPL";
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