kernel/events/ring_buffer.c

596 		addr = rb->aux_pages[from >> PAGE_SHIFT];
641 	struct page *page = virt_to_page(rb->aux_pages[idx]);
670 		kfree(rb->aux_pages);
713 	rb->aux_pages = kcalloc_node(nr_pages, sizeof(void *), GFP_KERNEL,
715 	if (!rb->aux_pages)
730 			rb->aux_pages[rb->aux_nr_pages] = page_address(page++);
741 		struct page *page = virt_to_page(rb->aux_pages[0]);
747 	rb->aux_priv = event->pmu->setup_aux(event, rb->aux_pages, nr_pages,
755 	 * aux_pages (and pmu driver's private data, aux_priv) will be
968 			return virt_to_page(rb->aux_pages[aux_pgoff]);