Documentation/bpf/bpf_iterators.rst

305   union bpf_iter_link_info linfo;
306   memset(&linfo, 0, sizeof(linfo));
307   linfo.task.pid = getpid();
308   opts.link_info = &linfo;
309   opts.link_info_len = sizeof(linfo);
311 ``linfo.task.pid``, if it is non-zero, directs the kernel to create an iterator
314 ``linfo.task.pid`` is zero, the iterator will visit every opened file of every
315 process. Similarly, ``linfo.task.tid`` directs the kernel to create an iterator
317 ``linfo.task.tid`` is different from ``linfo.task.pid`` only if the thread has a
379         union bpf_iter_link_info linfo;
383         memset(&linfo, 0, sizeof(linfo));
384         linfo.task.pid = getpid();
385         opts.link_info = &linfo;
386         opts.link_info_len = sizeof(linfo);
454           memset(&linfo, 0, sizeof(linfo));
455           linfo.task.pid = getpid();
456           opts.link_info = &linfo;
457           opts.link_info_len = sizeof(linfo);