466 	struct buffer_page	*tail_page;  member
527 	struct buffer_page		*tail_page;	/* write to tail */  member
665 	struct buffer_page *tail_page = READ_ONCE(cpu_buffer->tail_page);  in verify_event()  local
674 		if (page == tail_page || WARN_ON_ONCE(stop++ > 100))  in verify_event()
742 		return rb_fix_abs_ts(ts, cpu_buffer->tail_page->page->time_stamp);  in ring_buffer_event_time_stamp()
1457 			       struct buffer_page *tail_page,  in rb_tail_page_update()  argument
1486 	if (tail_page == READ_ONCE(cpu_buffer->tail_page)) {  in rb_tail_page_update()
1512 		if (try_cmpxchg(&cpu_buffer->tail_page, &tail_page, next_page))  in rb_tail_page_update()
1938 	if (head_page == cpu_buffer->tail_page)  in rb_meta_validate_events()
1945 		if (head_page == cpu_buffer->tail_page)  in rb_meta_validate_events()
2231 		cpu_buffer->tail_page = bpage;  in rb_meta_buffer_update()
2410 	    !cpu_buffer->head_page || !cpu_buffer->commit_page || !cpu_buffer->tail_page) {  in rb_allocate_cpu_buffer()
2412 		    (cpu_buffer->head_page || cpu_buffer->commit_page || cpu_buffer->tail_page)) {  in rb_allocate_cpu_buffer()
2418 			if (!cpu_buffer->tail_page)  in rb_allocate_cpu_buffer()
2424 		cpu_buffer->tail_page = cpu_buffer->commit_page = cpu_buffer->head_page;  in rb_allocate_cpu_buffer()
2717 	struct list_head *tail_page, *to_remove, *next_page;  in rb_remove_pages()  local
2737 	tail_page = &cpu_buffer->tail_page->list;  in rb_remove_pages()
2743 	if (cpu_buffer->tail_page == cpu_buffer->reader_page)  in rb_remove_pages()
2744 		tail_page = rb_list_head(tail_page->next);  in rb_remove_pages()
2745 	to_remove = tail_page;  in rb_remove_pages()
2765 	tail_page->next = (struct list_head *)((unsigned long)next_page |  in rb_remove_pages()
2768 	next_page->prev = tail_page;  in rb_remove_pages()
3330 		    struct buffer_page *tail_page,  in rb_handle_head_page()  argument
3345 	type = rb_head_page_set_update(cpu_buffer, next_page, tail_page,  in rb_handle_head_page()
3456 		buffer_tail_page = READ_ONCE(cpu_buffer->tail_page);  in rb_handle_head_page()
3461 		if (buffer_tail_page != tail_page &&  in rb_handle_head_page()
3475 					      tail_page,  in rb_handle_head_page()
3490 	struct buffer_page *tail_page = info->tail_page;  in rb_reset_tail()  local
3505 			tail_page->real_end = 0;  in rb_reset_tail()
3507 		local_sub(length, &tail_page->write);  in rb_reset_tail()
3511 	event = __rb_page_index(tail_page, tail);  in rb_reset_tail()
3518 	tail_page->real_end = tail;  in rb_reset_tail()
3542 		local_sub(length, &tail_page->write);  in rb_reset_tail()
3560 	local_sub(length, &tail_page->write);  in rb_reset_tail()
3572 	struct buffer_page *tail_page = info->tail_page;  in rb_move_tail()  local
3578 	next_page = tail_page;  in rb_move_tail()
3606 	if (rb_is_head_page(next_page, &tail_page->list)) {  in rb_move_tail()
3623 						  tail_page,  in rb_move_tail()
3641 				      cpu_buffer->tail_page) &&  in rb_move_tail()
3650 	rb_tail_page_update(cpu_buffer, tail_page, next_page);  in rb_move_tail()
3845 	bpage = READ_ONCE(cpu_buffer->tail_page);  in rb_try_to_discard()
3920 	while (cpu_buffer->commit_page != READ_ONCE(cpu_buffer->tail_page)) {  in rb_set_commit_to_write()
3924 			       rb_is_reader_page(cpu_buffer->tail_page)))  in rb_set_commit_to_write()
3961 	if (unlikely(cpu_buffer->commit_page != READ_ONCE(cpu_buffer->tail_page)))  in rb_set_commit_to_write()
4388 	bpage = info->tail_page->page;  in check_buffer()
4444 	struct buffer_page *tail_page;  in __rb_reserve_next()  local
4448 	tail_page = info->tail_page = READ_ONCE(cpu_buffer->tail_page);  in __rb_reserve_next()
4450  /*A*/	w = local_read(&tail_page->write) & RB_WRITE_MASK;  in __rb_reserve_next()
4482  /*C*/	write = local_add_return(info->length, &tail_page->write);  in __rb_reserve_next()
4531  /*F*/		if (write == (local_read(&tail_page->write) & RB_WRITE_MASK) &&  in __rb_reserve_next()
4564 	event = __rb_page_index(tail_page, tail);  in __rb_reserve_next()
4567 	local_inc(&tail_page->entries);  in __rb_reserve_next()
4574 		tail_page->page->time_stamp = info->ts;  in __rb_reserve_next()
5074 	if (cpu_buffer->tail_page == cpu_buffer->reader_page)  in ring_buffer_oldest_event_ts()
6153 	cpu_buffer->tail_page = cpu_buffer->head_page;  in rb_reset_cpu()
6941 		cpu_buffer->tail_page = cpu_buffer->commit_page = cpu_buffer->head_page;  in ring_buffer_subbuf_order_set()
7391 		} else if (!WARN_ONCE(cpu_buffer->reader_page == cpu_buffer->tail_page,  in ring_buffer_map_get_reader()