kernfs_generic_poll 859 fs/kernfs/file.c ret = kernfs_generic_poll(of, wait); kernfs_generic_poll 370 include/linux/kernfs.h __poll_t kernfs_generic_poll(struct kernfs_open_file *of, kernfs_generic_poll 3792 kernel/cgroup/cgroup.c return kernfs_generic_poll(of, pt);