| 1 | // SPDX-License-Identifier: GPL-2.0 |
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| 2 | /* Copyright (c) 2020 Facebook */ |
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| 3 | |
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| 4 | #include "vmlinux.h" |
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| 5 | #include <bpf/bpf_helpers.h> |
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| 6 | #include <bpf/bpf_tracing.h> |
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| 7 | |
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| 8 | __u32 count = 0; |
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| 9 | __u32 on_cpu = 0xffffffff; |
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| 10 | |
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| 11 | SEC("raw_tp/task_rename" ) |
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| 12 | int BPF_PROG(rename, struct task_struct *task, char *comm) |
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| 13 | { |
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| 14 | |
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| 15 | count++; |
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| 16 | if ((__u64) task == 0x1234ULL && (__u64) comm == 0x5678ULL) { |
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| 17 | on_cpu = bpf_get_smp_processor_id(); |
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| 18 | return (long)task + (long)comm; |
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| 19 | } |
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| 20 | |
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| 21 | return 0; |
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| 22 | } |
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| 23 | |
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| 24 | char _license[] SEC("license" ) = "GPL" ; |
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| 25 | |
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