kernel/trace/ring_buffer.c

461 	struct buffer_data_page		*free_page;
1679 	free_page((unsigned long)cpu_buffer->free_page);
5604 	if (cpu_buffer->free_page) {
5605 		bpage->data = cpu_buffer->free_page;
5606 		cpu_buffer->free_page = NULL;
5664 	if (!cpu_buffer->free_page) {
5665 		cpu_buffer->free_page = bpage;
6064 		free_pages((unsigned long)cpu_buffer->free_page, old_order);
6065 		cpu_buffer->free_page = NULL;
6120 	free_page(addr);