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7cf245a37e
Fix all files in samples/bpf 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 make sure no new files are introduced that doesn't include the bpf/
prefix in its include, remove tools/lib/bpf from the include path entirely,
and use tools/lib instead.
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: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/157952560911.1683545.8795966751309534150.stgit@toke.dk
40 lines
957 B
C
40 lines
957 B
C
/* Copyright 2016 Netflix, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*/
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#include <linux/version.h>
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#include <linux/ptrace.h>
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#include <uapi/linux/bpf.h>
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#include <uapi/linux/bpf_perf_event.h>
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_tracing.h>
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#define MAX_IPS 8192
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struct bpf_map_def SEC("maps") ip_map = {
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.type = BPF_MAP_TYPE_HASH,
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.key_size = sizeof(u64),
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.value_size = sizeof(u32),
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.max_entries = MAX_IPS,
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};
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SEC("perf_event")
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int do_sample(struct bpf_perf_event_data *ctx)
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{
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u64 ip;
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u32 *value, init_val = 1;
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ip = PT_REGS_IP(&ctx->regs);
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value = bpf_map_lookup_elem(&ip_map, &ip);
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if (value)
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*value += 1;
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else
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/* E2BIG not tested for this example only */
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bpf_map_update_elem(&ip_map, &ip, &init_val, BPF_NOEXIST);
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return 0;
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}
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char _license[] SEC("license") = "GPL";
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