c8ed668593
Once we enable -Wall for BPF sources, compiler will complain about lots of unused variables, variables that are set but never read, etc. Fix all these issues first before enabling -Wall in Makefile. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/r/20230309054015.4068562-4-andrii@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
26 lines
478 B
C
26 lines
478 B
C
// SPDX-License-Identifier: GPL-2.0-only
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/* Copyright (c) 2017 Facebook
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*/
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#include <stddef.h>
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#include <linux/bpf.h>
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#include <bpf/bpf_helpers.h>
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#include "bpf_misc.h"
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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, __u32);
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__type(value, __u64);
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} test_map_id SEC(".maps");
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SEC("raw_tp/sys_enter")
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int test_obj_id(void *ctx)
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{
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__u32 key = 0;
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__u64 *value;
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value = bpf_map_lookup_elem(&test_map_id, &key);
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__sink(value);
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return 0;
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}
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