497 	struct buffer_page		*head_page;	/* read from head */  member
553 	struct buffer_page		*head_page;  member
1246 	head = cpu_buffer->head_page;  in rb_head_page_activate()
1343 	if (RB_WARN_ON(cpu_buffer, !cpu_buffer->head_page))  in rb_set_head_page()
1351 	page = head = cpu_buffer->head_page;  in rb_set_head_page()
1361 				cpu_buffer->head_page = page;  in rb_set_head_page()
1489 	if (cpu_buffer->head_page)  in rb_check_pages()
1662 	cpu_buffer->head_page  in rb_allocate_cpu_buffer()
1664 	cpu_buffer->tail_page = cpu_buffer->commit_page = cpu_buffer->head_page;  in rb_allocate_cpu_buffer()
1886 		cpu_buffer->head_page = list_entry(next_page,  in rb_remove_pages()
1963 		struct list_head *head_page, *prev_page, *r;  in rb_insert_pages()  local
1967 		head_page = &rb_set_head_page(cpu_buffer)->list;  in rb_insert_pages()
1968 		if (!head_page)  in rb_insert_pages()
1970 		prev_page = head_page->prev;  in rb_insert_pages()
1976 				     ((unsigned long)head_page | RB_PAGE_HEAD);  in rb_insert_pages()
1989 			head_page->prev = last_page;  in rb_insert_pages()
2270 	struct buffer_page *iter_head_page = iter->head_page;  in rb_iter_head_event()
2313 	iter->page_stamp = iter->read_stamp = iter->head_page->page->time_stamp;  in rb_iter_head_event()
2350 	if (iter->head_page == cpu_buffer->reader_page)  in rb_inc_iter()
2351 		iter->head_page = rb_set_head_page(cpu_buffer);  in rb_inc_iter()
2353 		rb_inc_page(&iter->head_page);  in rb_inc_iter()
2355 	iter->page_stamp = iter->read_stamp = iter->head_page->page->time_stamp;  in rb_inc_iter()
4271 	iter->head_page = cpu_buffer->reader_page;  in rb_iter_reset()
4275 	iter->cache_reader_page = iter->head_page;  in rb_iter_reset()
4282 		iter->read_stamp = iter->head_page->page->time_stamp;  in rb_iter_reset()
4318 	struct buffer_page *head_page;  in ring_buffer_iter_empty()  local
4327 	head_page = cpu_buffer->head_page;  in ring_buffer_iter_empty()
4351 	return ((iter->head_page == commit_page && iter->head >= commit) ||  in ring_buffer_iter_empty()
4352 		(iter->head_page == reader && commit_page == head_page &&  in ring_buffer_iter_empty()
4353 		 head_page->read == commit &&  in ring_buffer_iter_empty()
4527 	rb_inc_page(&cpu_buffer->head_page);  in rb_get_reader_page()
4594 	if (iter->next_event >= rb_page_size(iter->head_page)) {  in rb_advance_iter()
4596 		if (iter->head_page == cpu_buffer->commit_page)  in rb_advance_iter()
4723 	if (iter->head >= rb_page_size(iter->head_page)) {  in rb_iter_peek()
5099 	cpu_buffer->head_page  in rb_reset_cpu()
5101 	local_set(&cpu_buffer->head_page->write, 0);  in rb_reset_cpu()
5102 	local_set(&cpu_buffer->head_page->entries, 0);  in rb_reset_cpu()
5103 	local_set(&cpu_buffer->head_page->page->commit, 0);  in rb_reset_cpu()
5105 	cpu_buffer->head_page->read = 0;  in rb_reset_cpu()
5107 	cpu_buffer->tail_page = cpu_buffer->head_page;  in rb_reset_cpu()
5108 	cpu_buffer->commit_page = cpu_buffer->head_page;  in rb_reset_cpu()