32 lines
612 B
C
32 lines
612 B
C
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// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2021 Facebook */
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#include "vmlinux.h"
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_tracing.h>
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char LICENSE[] SEC("license") = "GPL";
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int pid = 0;
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int fentry_cnt = 0;
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int fexit_cnt = 0;
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SEC("fentry/__x64_sys_nanosleep")
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int BPF_PROG(nanosleep_fentry, const struct pt_regs *regs)
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{
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if ((int)bpf_get_current_pid_tgid() != pid)
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return 0;
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fentry_cnt++;
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return 0;
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}
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SEC("fexit/__x64_sys_nanosleep")
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int BPF_PROG(nanosleep_fexit, const struct pt_regs *regs, int ret)
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{
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if ((int)bpf_get_current_pid_tgid() != pid)
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return 0;
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fexit_cnt++;
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return 0;
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}
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