5819 		if (!rb || !rb->nr_pages) {  in _perf_ioctl()
6309 	unsigned long nr_pages;  in perf_mmap()  local
6331 		nr_pages = (vma_size / PAGE_SIZE) - 1;  in perf_mmap()
6343 		nr_pages = vma_size / PAGE_SIZE;  in perf_mmap()
6365 		if (aux_size != vma_size || aux_size != nr_pages * PAGE_SIZE)  in perf_mmap()
6369 		if (rb_has_aux(rb) && rb->aux_nr_pages != nr_pages)  in perf_mmap()
6372 		if (!is_power_of_2(nr_pages))  in perf_mmap()
6385 		user_extra = nr_pages;  in perf_mmap()
6394 	if (nr_pages != 0 && !is_power_of_2(nr_pages))  in perf_mmap()
6397 	if (vma_size != PAGE_SIZE * (1 + nr_pages))  in perf_mmap()
6404 		if (data_page_nr(event->rb) != nr_pages) {  in perf_mmap()
6422 	user_extra = nr_pages + 1;  in perf_mmap()
6467 		rb = rb_alloc(nr_pages,  in perf_mmap()
6486 		ret = rb_alloc_aux(rb, event, vma->vm_pgoff, nr_pages,  in perf_mmap()