设置当前追踪所对应的 BPF 程序,fd 即为我们本次打开的 BPF 程序 fd // 相关说明参见 https://lwn.net/Articles/683504/ 255 err = ioctl(efd, PERF_EVENT_IOC_SET_BPF, fd); 256 if (err < 0) { 257 printf("ioctl PERF_EVENT_IOC_SET_BPF failed err %s\n", 258 strerror(errno)); 259 ...
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