cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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test_raw_tp_test_run.c (488B)

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