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Move BPF_PROG, BPF_KPROBE, and BPF_KRETPROBE macro into libbpf's bpf_tracing.h header to make it available for non-selftests users. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200229231112.1240137-5-andriin@fb.com
26 lines
585 B
C
26 lines
585 B
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (c) 2019 Facebook
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#include <linux/ptrace.h>
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#include <linux/bpf.h>
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_tracing.h>
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struct {
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__uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
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__uint(key_size, sizeof(int));
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__uint(value_size, sizeof(int));
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} perf_buf_map SEC(".maps");
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SEC("kprobe/sys_nanosleep")
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int BPF_KPROBE(handle_sys_nanosleep_entry)
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{
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int cpu = bpf_get_smp_processor_id();
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bpf_perf_event_output(ctx, &perf_buf_map, BPF_F_CURRENT_CPU,
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&cpu, sizeof(cpu));
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return 0;
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}
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char _license[] SEC("license") = "GPL";
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