491 	struct buffer_page		*head_page;	/* read from head */  member
568 	struct buffer_page		*head_page;  member
1267 	head = cpu_buffer->head_page;  in rb_head_page_activate()
1369 	if (RB_WARN_ON(cpu_buffer, !cpu_buffer->head_page))  in rb_set_head_page()
1377 	page = head = cpu_buffer->head_page;  in rb_set_head_page()
1387 				cpu_buffer->head_page = page;  in rb_set_head_page()
1869 	struct buffer_page *head_page;  in rb_meta_validate_events()  local
1888 	head_page = cpu_buffer->head_page;  in rb_meta_validate_events()
1898 	for (i = 0; i < meta->nr_subbufs + 1; i++, rb_inc_page(&head_page)) {  in rb_meta_validate_events()
1901 		if (head_page == cpu_buffer->reader_page)  in rb_meta_validate_events()
1904 		ret = rb_validate_buffer(head_page->page, cpu_buffer->cpu);  in rb_meta_validate_events()
1916 		entry_bytes += local_read(&head_page->page->commit);  in rb_meta_validate_events()
1917 		local_set(&cpu_buffer->head_page->entries, ret);  in rb_meta_validate_events()
1919 		if (head_page == cpu_buffer->commit_page)  in rb_meta_validate_events()
1923 	if (head_page != cpu_buffer->commit_page) {  in rb_meta_validate_events()
1945 	for (i = 0; i < meta->nr_subbufs - 1; i++, rb_inc_page(&head_page)) {  in rb_meta_validate_events()
1946 		local_set(&head_page->entries, 0);  in rb_meta_validate_events()
1947 		local_set(&head_page->page->commit, 0);  in rb_meta_validate_events()
2094 		cpu_buffer->head_page = bpage;  in rb_meta_buffer_update()
2296 	    !cpu_buffer->head_page || !cpu_buffer->commit_page || !cpu_buffer->tail_page) {  in rb_allocate_cpu_buffer()
2298 		    (cpu_buffer->head_page || cpu_buffer->commit_page || cpu_buffer->tail_page)) {  in rb_allocate_cpu_buffer()
2300 			if (!cpu_buffer->head_page)  in rb_allocate_cpu_buffer()
2308 		cpu_buffer->head_page  in rb_allocate_cpu_buffer()
2310 		cpu_buffer->tail_page = cpu_buffer->commit_page = cpu_buffer->head_page;  in rb_allocate_cpu_buffer()
2666 		cpu_buffer->head_page = list_entry(next_page,  in rb_remove_pages()
2741 		struct list_head *head_page, *prev_page;  in rb_insert_pages()  local
2748 		head_page = &hpage->list;  in rb_insert_pages()
2749 		prev_page = head_page->prev;  in rb_insert_pages()
2755 				     ((unsigned long)head_page | RB_PAGE_HEAD);  in rb_insert_pages()
2768 			head_page->prev = last_page;  in rb_insert_pages()
3065 	struct buffer_page *iter_head_page = iter->head_page;  in rb_iter_head_event()
3113 	iter->page_stamp = iter->read_stamp = iter->head_page->page->time_stamp;  in rb_iter_head_event()
3152 	if (iter->head_page == cpu_buffer->reader_page)  in rb_inc_iter()
3153 		iter->head_page = rb_set_head_page(cpu_buffer);  in rb_inc_iter()
3155 		rb_inc_page(&iter->head_page);  in rb_inc_iter()
3157 	iter->page_stamp = iter->read_stamp = iter->head_page->page->time_stamp;  in rb_inc_iter()
5135 	iter->head_page = cpu_buffer->reader_page;  in rb_iter_reset()
5139 	iter->cache_reader_page = iter->head_page;  in rb_iter_reset()
5147 		iter->read_stamp = iter->head_page->page->time_stamp;  in rb_iter_reset()
5183 	struct buffer_page *head_page;  in ring_buffer_iter_empty()  local
5192 	head_page = cpu_buffer->head_page;  in ring_buffer_iter_empty()
5216 	return ((iter->head_page == commit_page && iter->head >= commit) ||  in ring_buffer_iter_empty()
5217 		(iter->head_page == reader && commit_page == head_page &&  in ring_buffer_iter_empty()
5218 		 head_page->read == commit &&  in ring_buffer_iter_empty()
5396 	rb_inc_page(&cpu_buffer->head_page);  in rb_get_reader_page()
5497 	if (iter->next_event >= rb_page_size(iter->head_page)) {  in rb_advance_iter()
5499 		if (iter->head_page == cpu_buffer->commit_page)  in rb_advance_iter()
5628 	if (iter->head >= rb_page_size(iter->head_page)) {  in rb_iter_peek()
5654 			*ts = rb_fix_abs_ts(*ts, iter->head_page->page->time_stamp);  in rb_iter_peek()
6031 	cpu_buffer->head_page  in rb_reset_cpu()
6033 	rb_clear_buffer_page(cpu_buffer->head_page);  in rb_reset_cpu()
6038 	cpu_buffer->tail_page = cpu_buffer->head_page;  in rb_reset_cpu()
6039 	cpu_buffer->commit_page = cpu_buffer->head_page;  in rb_reset_cpu()
6847 		cpu_buffer->head_page  in ring_buffer_subbuf_order_set()
6849 		cpu_buffer->tail_page = cpu_buffer->commit_page = cpu_buffer->head_page;  in ring_buffer_subbuf_order_set()