467 	struct buffer_page		*head_page;	/* read from head */  member
517 	struct buffer_page		*head_page;  member
883 	head = cpu_buffer->head_page;  in rb_head_page_activate()
981 	if (RB_WARN_ON(cpu_buffer, !cpu_buffer->head_page))  in rb_set_head_page()
989 	page = head = cpu_buffer->head_page;  in rb_set_head_page()
999 				cpu_buffer->head_page = page;  in rb_set_head_page()
1135 	if (cpu_buffer->head_page)  in rb_check_pages()
1273 	cpu_buffer->head_page  in rb_allocate_cpu_buffer()
1275 	cpu_buffer->tail_page = cpu_buffer->commit_page = cpu_buffer->head_page;  in rb_allocate_cpu_buffer()
1515 		cpu_buffer->head_page = list_entry(next_page,  in rb_remove_pages()
1590 		struct list_head *head_page, *prev_page, *r;  in rb_insert_pages()  local
1594 		head_page = &rb_set_head_page(cpu_buffer)->list;  in rb_insert_pages()
1595 		if (!head_page)  in rb_insert_pages()
1597 		prev_page = head_page->prev;  in rb_insert_pages()
1603 				     ((unsigned long)head_page | RB_PAGE_HEAD);  in rb_insert_pages()
1616 			head_page->prev = last_page;  in rb_insert_pages()
1886 	return __rb_page_index(iter->head_page, iter->head);  in rb_iter_head_event()
1997 	if (iter->head_page == cpu_buffer->reader_page)  in rb_inc_iter()
1998 		iter->head_page = rb_set_head_page(cpu_buffer);  in rb_inc_iter()
2000 		rb_inc_page(cpu_buffer, &iter->head_page);  in rb_inc_iter()
2002 	iter->read_stamp = iter->head_page->page->time_stamp;  in rb_inc_iter()
3407 	iter->head_page = cpu_buffer->reader_page;  in rb_iter_reset()
3410 	iter->cache_reader_page = iter->head_page;  in rb_iter_reset()
3416 		iter->read_stamp = iter->head_page->page->time_stamp;  in rb_iter_reset()
3452 	return iter->head_page == cpu_buffer->commit_page &&  in ring_buffer_iter_empty()
3628 	rb_inc_page(cpu_buffer, &cpu_buffer->head_page);  in rb_get_reader_page()
3682 	if (iter->head >= rb_page_size(iter->head_page)) {  in rb_advance_iter()
3684 		if (iter->head_page == cpu_buffer->commit_page)  in rb_advance_iter()
3699 		       (iter->head_page == cpu_buffer->commit_page) &&  in rb_advance_iter()
3708 	if ((iter->head >= rb_page_size(iter->head_page)) &&  in rb_advance_iter()
3709 	    (iter->head_page != cpu_buffer->commit_page))  in rb_advance_iter()
3822 	if (iter->head >= rb_page_size(iter->head_page)) {  in rb_iter_peek()
4171 	cpu_buffer->head_page  in rb_reset_cpu()
4173 	local_set(&cpu_buffer->head_page->write, 0);  in rb_reset_cpu()
4174 	local_set(&cpu_buffer->head_page->entries, 0);  in rb_reset_cpu()
4175 	local_set(&cpu_buffer->head_page->page->commit, 0);  in rb_reset_cpu()
4177 	cpu_buffer->head_page->read = 0;  in rb_reset_cpu()
4179 	cpu_buffer->tail_page = cpu_buffer->head_page;  in rb_reset_cpu()
4180 	cpu_buffer->commit_page = cpu_buffer->head_page;  in rb_reset_cpu()