344 static void rb_init_page(struct buffer_data_page *bpage)  in rb_init_page()  argument
346 	local_set(&bpage->commit, 0);  in rb_init_page()
353 static void free_buffer_page(struct buffer_page *bpage)  in free_buffer_page()  argument
355 	free_page((unsigned long)bpage->page);  in free_buffer_page()
356 	kfree(bpage);  in free_buffer_page()
1328 static inline void rb_inc_page(struct buffer_page **bpage)  in rb_inc_page()  argument
1330 	struct list_head *p = rb_list_head((*bpage)->list.next);  in rb_inc_page()
1332 	*bpage = list_entry(p, struct buffer_page, list);  in rb_inc_page()
1453 			  struct buffer_page *bpage)  in rb_check_bpage()  argument
1455 	unsigned long val = (unsigned long)bpage;  in rb_check_bpage()
1486 	struct buffer_page *bpage, *tmp;  in rb_check_pages()  local
1502 	list_for_each_entry_safe(bpage, tmp, head, list) {  in rb_check_pages()
1504 			       bpage->list.next->prev != &bpage->list))  in rb_check_pages()
1507 			       bpage->list.prev->next != &bpage->list))  in rb_check_pages()
1509 		if (rb_check_list(cpu_buffer, &bpage->list))  in rb_check_pages()
1521 	struct buffer_page *bpage, *tmp;  in __rb_allocate_pages()  local
1558 		bpage = kzalloc_node(ALIGN(sizeof(*bpage), cache_line_size()),  in __rb_allocate_pages()
1560 		if (!bpage)  in __rb_allocate_pages()
1563 		rb_check_bpage(cpu_buffer, bpage);  in __rb_allocate_pages()
1565 		list_add(&bpage->list, pages);  in __rb_allocate_pages()
1570 		bpage->page = page_address(page);  in __rb_allocate_pages()
1571 		rb_init_page(bpage->page);  in __rb_allocate_pages()
1582 	list_for_each_entry_safe(bpage, tmp, pages, list) {  in __rb_allocate_pages()
1583 		list_del_init(&bpage->list);  in __rb_allocate_pages()
1584 		free_buffer_page(bpage);  in __rb_allocate_pages()
1621 	struct buffer_page *bpage;  in rb_allocate_cpu_buffer()  local
1641 	bpage = kzalloc_node(ALIGN(sizeof(*bpage), cache_line_size()),  in rb_allocate_cpu_buffer()
1643 	if (!bpage)  in rb_allocate_cpu_buffer()
1646 	rb_check_bpage(cpu_buffer, bpage);  in rb_allocate_cpu_buffer()
1648 	cpu_buffer->reader_page = bpage;  in rb_allocate_cpu_buffer()
1652 	bpage->page = page_address(page);  in rb_allocate_cpu_buffer()
1653 	rb_init_page(bpage->page);  in rb_allocate_cpu_buffer()
1681 	struct buffer_page *bpage, *tmp;  in rb_free_cpu_buffer()  local
1688 		list_for_each_entry_safe(bpage, tmp, head, list) {  in rb_free_cpu_buffer()
1689 			list_del_init(&bpage->list);  in rb_free_cpu_buffer()
1690 			free_buffer_page(bpage);  in rb_free_cpu_buffer()
1692 		bpage = list_entry(head, struct buffer_page, list);  in rb_free_cpu_buffer()
1693 		free_buffer_page(bpage);  in rb_free_cpu_buffer()
1817 static inline unsigned long rb_page_entries(struct buffer_page *bpage)  in rb_page_entries()  argument
1819 	return local_read(&bpage->entries) & RB_WRITE_MASK;  in rb_page_entries()
1822 static inline unsigned long rb_page_write(struct buffer_page *bpage)  in rb_page_write()  argument
1824 	return local_read(&bpage->write) & RB_WRITE_MASK;  in rb_page_write()
2006 		struct buffer_page *bpage, *tmp;  in rb_insert_pages()  local
2007 		list_for_each_entry_safe(bpage, tmp, &cpu_buffer->new_pages,  in rb_insert_pages()
2009 			list_del_init(&bpage->list);  in rb_insert_pages()
2010 			free_buffer_page(bpage);  in rb_insert_pages()
2218 		struct buffer_page *bpage, *tmp;  in ring_buffer_resize()  local
2226 		list_for_each_entry_safe(bpage, tmp, &cpu_buffer->new_pages,  in ring_buffer_resize()
2228 			list_del_init(&bpage->list);  in ring_buffer_resize()
2229 			free_buffer_page(bpage);  in ring_buffer_resize()
2249 static __always_inline void *__rb_page_index(struct buffer_page *bpage, unsigned index)  in __rb_page_index()  argument
2251 	return bpage->page->data + index;  in __rb_page_index()
2261 static __always_inline unsigned rb_page_commit(struct buffer_page *bpage)  in rb_page_commit()  argument
2263 	return local_read(&bpage->page->commit);  in rb_page_commit()
2321 static __always_inline unsigned rb_page_size(struct buffer_page *bpage)  in rb_page_size()  argument
2323 	return rb_page_commit(bpage);  in rb_page_size()
2876 	struct buffer_page *bpage;  in rb_try_to_discard()  local
2887 	bpage = READ_ONCE(cpu_buffer->tail_page);  in rb_try_to_discard()
2897 	if (bpage->page == (void *)addr && rb_page_write(bpage) == old_index) {  in rb_try_to_discard()
2899 			local_read(&bpage->write) & ~RB_WRITE_MASK;  in rb_try_to_discard()
2934 		index = local_cmpxchg(&bpage->write, old_index, new_index);  in rb_try_to_discard()
3287 static void dump_buffer_page(struct buffer_data_page *bpage,  in dump_buffer_page()  argument
3295 	ts = bpage->time_stamp;  in dump_buffer_page()
3300 		event = (struct ring_buffer_event *)(bpage->data + e);  in dump_buffer_page()
3344 	struct buffer_data_page *bpage;  in check_buffer()  local
3349 	bpage = info->tail_page->page;  in check_buffer()
3353 		tail = local_read(&bpage->commit);  in check_buffer()
3364 	if (tail <= 8 || tail > local_read(&bpage->commit))  in check_buffer()
3373 	ts = bpage->time_stamp;  in check_buffer()
3377 		event = (struct ring_buffer_event *)(bpage->data + e);  in check_buffer()
3418 		dump_buffer_page(bpage, info, tail);  in check_buffer()
3724 	struct buffer_page *bpage = cpu_buffer->commit_page;  in rb_decrement_entry()  local
3730 	if (likely(bpage->page == (void *)addr)) {  in rb_decrement_entry()
3731 		local_dec(&bpage->entries);  in rb_decrement_entry()
3739 	rb_inc_page(&bpage);  in rb_decrement_entry()
3740 	start = bpage;  in rb_decrement_entry()
3742 		if (bpage->page == (void *)addr) {  in rb_decrement_entry()
3743 			local_dec(&bpage->entries);  in rb_decrement_entry()
3746 		rb_inc_page(&bpage);  in rb_decrement_entry()
3747 	} while (bpage != start);  in rb_decrement_entry()
4074 	struct buffer_page *bpage;  in ring_buffer_oldest_event_ts()  local
4087 		bpage = cpu_buffer->reader_page;  in ring_buffer_oldest_event_ts()
4089 		bpage = rb_set_head_page(cpu_buffer);  in ring_buffer_oldest_event_ts()
4090 	if (bpage)  in ring_buffer_oldest_event_ts()
4091 		ret = bpage->page->time_stamp;  in ring_buffer_oldest_event_ts()
5407 	struct buffer_data_page *bpage = NULL;  in ring_buffer_alloc_read_page()  local
5419 		bpage = cpu_buffer->free_page;  in ring_buffer_alloc_read_page()
5426 	if (bpage)  in ring_buffer_alloc_read_page()
5434 	bpage = page_address(page);  in ring_buffer_alloc_read_page()
5437 	rb_init_page(bpage);  in ring_buffer_alloc_read_page()
5439 	return bpage;  in ring_buffer_alloc_read_page()
5454 	struct buffer_data_page *bpage = data;  in ring_buffer_free_read_page()  local
5455 	struct page *page = virt_to_page(bpage);  in ring_buffer_free_read_page()
5466 		cpu_buffer->free_page = bpage;  in ring_buffer_free_read_page()
5467 		bpage = NULL;  in ring_buffer_free_read_page()
5474 	free_page((unsigned long)bpage);  in ring_buffer_free_read_page()
5516 	struct buffer_data_page *bpage;  in ring_buffer_read_page()  local
5540 	bpage = *data_page;  in ring_buffer_read_page()
5541 	if (!bpage)  in ring_buffer_read_page()
5596 			memcpy(bpage->data + pos, rpage->data + rpos, size);  in ring_buffer_read_page()
5613 		local_set(&bpage->commit, pos);  in ring_buffer_read_page()
5614 		bpage->time_stamp = save_timestamp;  in ring_buffer_read_page()
5624 		rb_init_page(bpage);  in ring_buffer_read_page()
5625 		bpage = reader->page;  in ring_buffer_read_page()
5630 		*data_page = bpage;  in ring_buffer_read_page()
5638 			local_set(&bpage->commit, reader->real_end);  in ring_buffer_read_page()
5644 	commit = local_read(&bpage->commit);  in ring_buffer_read_page()
5653 			memcpy(&bpage->data[commit], &missed_events,  in ring_buffer_read_page()
5655 			local_add(RB_MISSED_STORED, &bpage->commit);  in ring_buffer_read_page()
5658 		local_add(RB_MISSED_EVENTS, &bpage->commit);  in ring_buffer_read_page()
5665 		memset(&bpage->data[commit], 0, BUF_PAGE_SIZE - commit);  in ring_buffer_read_page()