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22 lines
547 B
22 lines
547 B
#!/usr/bin/env python
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# Copyright (c) PLUMgrid, Inc.
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# Licensed under the Apache License, Version 2.0 (the "License")
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# This is an example of tracing an event and printing custom fields.
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# run in project examples directory with:
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# sudo ./trace_fields.py"
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from __future__ import print_function
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from bcc import BPF
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prog = """
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int hello(void *ctx) {
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bpf_trace_printk("Hello, World!\\n");
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return 0;
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}
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"""
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b = BPF(text=prog)
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b.attach_kprobe(event=b.get_syscall_fnname("clone"), fn_name="hello")
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print("PID MESSAGE")
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b.trace_print(fmt="{1} {5}")
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