470 	struct buffer_page		*head_page;	/* read from head */  member
530 	struct buffer_page		*head_page;  member
1306 	head = cpu_buffer->head_page;  in rb_head_page_activate()
1403 	if (RB_WARN_ON(cpu_buffer, !cpu_buffer->head_page))  in rb_set_head_page()
1411 	page = head = cpu_buffer->head_page;  in rb_set_head_page()
1421 				cpu_buffer->head_page = page;  in rb_set_head_page()
1700 	cpu_buffer->head_page  in rb_allocate_cpu_buffer()
1702 	cpu_buffer->tail_page = cpu_buffer->commit_page = cpu_buffer->head_page;  in rb_allocate_cpu_buffer()
1952 		cpu_buffer->head_page = list_entry(next_page,  in rb_remove_pages()
2030 		struct list_head *head_page, *prev_page, *r;  in rb_insert_pages()  local
2034 		head_page = &rb_set_head_page(cpu_buffer)->list;  in rb_insert_pages()
2035 		if (!head_page)  in rb_insert_pages()
2037 		prev_page = head_page->prev;  in rb_insert_pages()
2043 				     ((unsigned long)head_page | RB_PAGE_HEAD);  in rb_insert_pages()
2056 			head_page->prev = last_page;  in rb_insert_pages()
2338 	struct buffer_page *iter_head_page = iter->head_page;  in rb_iter_head_event()
2386 	iter->page_stamp = iter->read_stamp = iter->head_page->page->time_stamp;  in rb_iter_head_event()
2423 	if (iter->head_page == cpu_buffer->reader_page)  in rb_inc_iter()
2424 		iter->head_page = rb_set_head_page(cpu_buffer);  in rb_inc_iter()
2426 		rb_inc_page(&iter->head_page);  in rb_inc_iter()
2428 	iter->page_stamp = iter->read_stamp = iter->head_page->page->time_stamp;  in rb_inc_iter()
4337 	iter->head_page = cpu_buffer->reader_page;  in rb_iter_reset()
4341 	iter->cache_reader_page = iter->head_page;  in rb_iter_reset()
4348 		iter->read_stamp = iter->head_page->page->time_stamp;  in rb_iter_reset()
4384 	struct buffer_page *head_page;  in ring_buffer_iter_empty()  local
4393 	head_page = cpu_buffer->head_page;  in ring_buffer_iter_empty()
4417 	return ((iter->head_page == commit_page && iter->head >= commit) ||  in ring_buffer_iter_empty()
4418 		(iter->head_page == reader && commit_page == head_page &&  in ring_buffer_iter_empty()
4419 		 head_page->read == commit &&  in ring_buffer_iter_empty()
4552 	new_reader = ring_buffer_search_footer(cpu_buffer->head_page,  in rb_swap_reader_page_ext()
4572 	cpu_buffer->head_page = new_head;  in rb_swap_reader_page_ext()
4666 	rb_inc_page(&cpu_buffer->head_page);  in rb_swap_reader_page()
4819 	if (iter->next_event >= rb_page_size(iter->head_page)) {  in rb_advance_iter()
4821 		if (iter->head_page == cpu_buffer->commit_page)  in rb_advance_iter()
4949 	if (iter->head >= rb_page_size(iter->head_page)) {  in rb_iter_peek()
4975 			*ts = rb_fix_abs_ts(*ts, iter->head_page->page->time_stamp);  in rb_iter_peek()
5188 	bpage = ring_buffer_search_footer(cpu_buffer->head_page,  in ring_buffer_update_view()
5196 	__set_head_page_flag(cpu_buffer->head_page, RB_PAGE_NORMAL);  in ring_buffer_update_view()
5201 	cpu_buffer->reader_page->list.next = &cpu_buffer->head_page->list;  in ring_buffer_update_view()
5203 	cpu_buffer->head_page = bpage;  in ring_buffer_update_view()
5406 	cpu_buffer->head_page  in rb_reset_cpu()
5408 	rb_clear_buffer_page(cpu_buffer->head_page);  in rb_reset_cpu()
5413 	cpu_buffer->tail_page = cpu_buffer->head_page;  in rb_reset_cpu()
5414 	cpu_buffer->commit_page = cpu_buffer->head_page;  in rb_reset_cpu()
6110 		bpage = rb->head_page;  in trace_buffer_pack()