relay_open 414 block/blktrace.c bt->rchan = relay_open("trace", dir, buts->buf_size, relay_open 168 include/linux/relay.h struct rchan *relay_open(const char *base_filename, relay_open 173 virt/kvm/kvm_trace.c kt->rchan = relay_open("trace", kvm_debugfs_dir, kuts->buf_size,