dc79f035b2
Currently LLVM fails to recognize .data.* as data section and defaults to .text section. Later BPF backend tries to emit 4-byte NOP instruction which doesn't exist in BPF ISA and aborts. The fix for LLVM is pending: https://reviews.llvm.org/D138477 While waiting for the fix lets workaround the linked_list test case by using .bss.* prefix which is properly recognized by LLVM as BSS section. Fix libbpf to support .bss. prefix and adjust tests. Signed-off-by: Alexei Starovoitov <ast@kernel.org>
56 lines
1.1 KiB
C
56 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#ifndef LINKED_LIST_H
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#define LINKED_LIST_H
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#include <vmlinux.h>
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#include <bpf/bpf_helpers.h>
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#include "bpf_experimental.h"
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struct bar {
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struct bpf_list_node node;
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int data;
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};
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struct foo {
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struct bpf_list_node node;
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struct bpf_list_head head __contains(bar, node);
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struct bpf_spin_lock lock;
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int data;
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struct bpf_list_node node2;
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};
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struct map_value {
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struct bpf_spin_lock lock;
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int data;
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struct bpf_list_head head __contains(foo, node);
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};
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struct array_map {
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__uint(type, BPF_MAP_TYPE_ARRAY);
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__type(key, int);
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__type(value, struct map_value);
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__uint(max_entries, 1);
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};
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struct array_map array_map SEC(".maps");
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struct array_map inner_map SEC(".maps");
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struct {
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__uint(type, BPF_MAP_TYPE_ARRAY_OF_MAPS);
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__uint(max_entries, 1);
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__type(key, int);
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__type(value, int);
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__array(values, struct array_map);
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} map_of_maps SEC(".maps") = {
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.values = {
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[0] = &inner_map,
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},
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};
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#define private(name) SEC(".bss." #name) __hidden __attribute__((aligned(8)))
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private(A) struct bpf_spin_lock glock;
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private(A) struct bpf_list_head ghead __contains(foo, node);
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private(B) struct bpf_spin_lock glock2;
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#endif
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