50 static struct binder_buffer *binder_buffer_next(struct binder_buffer *buffer)  in binder_buffer_next()  argument
52 	return list_entry(buffer->entry.next, struct binder_buffer, entry);  in binder_buffer_next()
55 static struct binder_buffer *binder_buffer_prev(struct binder_buffer *buffer)  in binder_buffer_prev()  argument
57 	return list_entry(buffer->entry.prev, struct binder_buffer, entry);  in binder_buffer_prev()
61 				       struct binder_buffer *buffer)  in binder_alloc_buffer_size()  argument
63 	if (list_is_last(&buffer->entry, &alloc->buffers))  in binder_alloc_buffer_size()
64 		return alloc->buffer + alloc->buffer_size - buffer->user_data;  in binder_alloc_buffer_size()
65 	return binder_buffer_next(buffer)->user_data - buffer->user_data;  in binder_alloc_buffer_size()
73 	struct binder_buffer *buffer;  in binder_insert_free_buffer()  local
87 		buffer = rb_entry(parent, struct binder_buffer, rb_node);  in binder_insert_free_buffer()
88 		BUG_ON(!buffer->free);  in binder_insert_free_buffer()
90 		buffer_size = binder_alloc_buffer_size(alloc, buffer);  in binder_insert_free_buffer()
106 	struct binder_buffer *buffer;  in binder_insert_allocated_buffer_locked()  local
112 		buffer = rb_entry(parent, struct binder_buffer, rb_node);  in binder_insert_allocated_buffer_locked()
113 		BUG_ON(buffer->free);  in binder_insert_allocated_buffer_locked()
115 		if (new_buffer->user_data < buffer->user_data)  in binder_insert_allocated_buffer_locked()
117 		else if (new_buffer->user_data > buffer->user_data)  in binder_insert_allocated_buffer_locked()
131 	struct binder_buffer *buffer;  in binder_alloc_prepare_to_free_locked()  local
137 		buffer = rb_entry(n, struct binder_buffer, rb_node);  in binder_alloc_prepare_to_free_locked()
138 		BUG_ON(buffer->free);  in binder_alloc_prepare_to_free_locked()
140 		if (uptr < buffer->user_data)  in binder_alloc_prepare_to_free_locked()
142 		else if (uptr > buffer->user_data)  in binder_alloc_prepare_to_free_locked()
150 			if (!buffer->allow_user_free)  in binder_alloc_prepare_to_free_locked()
152 			buffer->allow_user_free = 0;  in binder_alloc_prepare_to_free_locked()
153 			return buffer;  in binder_alloc_prepare_to_free_locked()
173 	struct binder_buffer *buffer;  in binder_alloc_prepare_to_free()  local
176 	buffer = binder_alloc_prepare_to_free_locked(alloc, user_ptr);  in binder_alloc_prepare_to_free()
178 	return buffer;  in binder_alloc_prepare_to_free()
204 		page = &alloc->pages[(page_addr - alloc->buffer) / PAGE_SIZE];  in binder_update_page_range()
231 		index = (page_addr - alloc->buffer) / PAGE_SIZE;  in binder_update_page_range()
283 		index = (page_addr - alloc->buffer) / PAGE_SIZE;  in binder_update_page_range()
333 	struct binder_buffer *buffer;  in debug_low_async_space_locked()  local
339 		buffer = rb_entry(n, struct binder_buffer, rb_node);  in debug_low_async_space_locked()
340 		if (buffer->pid != pid)  in debug_low_async_space_locked()
342 		if (!buffer->async_transaction)  in debug_low_async_space_locked()
344 		total_alloc_size += binder_alloc_buffer_size(alloc, buffer)  in debug_low_async_space_locked()
375 	struct binder_buffer *buffer;  in binder_alloc_new_buf_locked()  local
421 		buffer = rb_entry(n, struct binder_buffer, rb_node);  in binder_alloc_new_buf_locked()
422 		BUG_ON(!buffer->free);  in binder_alloc_new_buf_locked()
423 		buffer_size = binder_alloc_buffer_size(alloc, buffer);  in binder_alloc_new_buf_locked()
445 			buffer = rb_entry(n, struct binder_buffer, rb_node);  in binder_alloc_new_buf_locked()
446 			buffer_size = binder_alloc_buffer_size(alloc, buffer);  in binder_alloc_new_buf_locked()
454 			buffer = rb_entry(n, struct binder_buffer, rb_node);  in binder_alloc_new_buf_locked()
455 			buffer_size = binder_alloc_buffer_size(alloc, buffer);  in binder_alloc_new_buf_locked()
472 		buffer = rb_entry(best_fit, struct binder_buffer, rb_node);  in binder_alloc_new_buf_locked()
473 		buffer_size = binder_alloc_buffer_size(alloc, buffer);  in binder_alloc_new_buf_locked()
478 		      alloc->pid, size, buffer, buffer_size);  in binder_alloc_new_buf_locked()
481 		(((uintptr_t)buffer->user_data + buffer_size) & PAGE_MASK);  in binder_alloc_new_buf_locked()
484 		(void __user *)PAGE_ALIGN((uintptr_t)buffer->user_data + size);  in binder_alloc_new_buf_locked()
488 		PAGE_ALIGN((uintptr_t)buffer->user_data), end_page_addr);  in binder_alloc_new_buf_locked()
495 		new_buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);  in binder_alloc_new_buf_locked()
501 		new_buffer->user_data = (u8 __user *)buffer->user_data + size;  in binder_alloc_new_buf_locked()
502 		list_add(&new_buffer->entry, &buffer->entry);  in binder_alloc_new_buf_locked()
508 	buffer->free = 0;  in binder_alloc_new_buf_locked()
509 	buffer->allow_user_free = 0;  in binder_alloc_new_buf_locked()
510 	binder_insert_allocated_buffer_locked(alloc, buffer);  in binder_alloc_new_buf_locked()
513 		      alloc->pid, size, buffer);  in binder_alloc_new_buf_locked()
514 	buffer->data_size = data_size;  in binder_alloc_new_buf_locked()
515 	buffer->offsets_size = offsets_size;  in binder_alloc_new_buf_locked()
516 	buffer->async_transaction = is_async;  in binder_alloc_new_buf_locked()
517 	buffer->extra_buffers_size = extra_buffers_size;  in binder_alloc_new_buf_locked()
518 	buffer->pid = pid;  in binder_alloc_new_buf_locked()
519 	buffer->oneway_spam_suspect = false;  in binder_alloc_new_buf_locked()
531 			buffer->oneway_spam_suspect = debug_low_async_space_locked(alloc, pid);  in binder_alloc_new_buf_locked()
536 	return buffer;  in binder_alloc_new_buf_locked()
540 				 PAGE_ALIGN((uintptr_t)buffer->user_data),  in binder_alloc_new_buf_locked()
568 	struct binder_buffer *buffer;  in binder_alloc_new_buf()  local
571 	buffer = binder_alloc_new_buf_locked(alloc, data_size, offsets_size,  in binder_alloc_new_buf()
574 	return buffer;  in binder_alloc_new_buf()
577 static void __user *buffer_start_page(struct binder_buffer *buffer)  in buffer_start_page()  argument
579 	return (void __user *)((uintptr_t)buffer->user_data & PAGE_MASK);  in buffer_start_page()
582 static void __user *prev_buffer_end_page(struct binder_buffer *buffer)  in prev_buffer_end_page()  argument
585 		(((uintptr_t)(buffer->user_data) - 1) & PAGE_MASK);  in prev_buffer_end_page()
589 				      struct binder_buffer *buffer)  in binder_delete_free_buffer()  argument
594 	BUG_ON(alloc->buffers.next == &buffer->entry);  in binder_delete_free_buffer()
595 	prev = binder_buffer_prev(buffer);  in binder_delete_free_buffer()
597 	if (prev_buffer_end_page(prev) == buffer_start_page(buffer)) {  in binder_delete_free_buffer()
601 				   alloc->pid, buffer->user_data,  in binder_delete_free_buffer()
605 	if (!list_is_last(&buffer->entry, &alloc->buffers)) {  in binder_delete_free_buffer()
606 		next = binder_buffer_next(buffer);  in binder_delete_free_buffer()
607 		if (buffer_start_page(next) == buffer_start_page(buffer)) {  in binder_delete_free_buffer()
612 					   buffer->user_data,  in binder_delete_free_buffer()
617 	if (PAGE_ALIGNED(buffer->user_data)) {  in binder_delete_free_buffer()
620 				   alloc->pid, buffer->user_data);  in binder_delete_free_buffer()
627 				   alloc->pid, buffer->user_data,  in binder_delete_free_buffer()
630 		binder_update_page_range(alloc, 0, buffer_start_page(buffer),  in binder_delete_free_buffer()
631 					 buffer_start_page(buffer) + PAGE_SIZE);  in binder_delete_free_buffer()
633 	list_del(&buffer->entry);  in binder_delete_free_buffer()
634 	kfree(buffer);  in binder_delete_free_buffer()
638 				   struct binder_buffer *buffer)  in binder_free_buf_locked()  argument
642 	buffer_size = binder_alloc_buffer_size(alloc, buffer);  in binder_free_buf_locked()
644 	size = ALIGN(buffer->data_size, sizeof(void *)) +  in binder_free_buf_locked()
645 		ALIGN(buffer->offsets_size, sizeof(void *)) +  in binder_free_buf_locked()
646 		ALIGN(buffer->extra_buffers_size, sizeof(void *));  in binder_free_buf_locked()
650 		      alloc->pid, buffer, size, buffer_size);  in binder_free_buf_locked()
652 	BUG_ON(buffer->free);  in binder_free_buf_locked()
654 	BUG_ON(buffer->transaction != NULL);  in binder_free_buf_locked()
655 	BUG_ON(buffer->user_data < alloc->buffer);  in binder_free_buf_locked()
656 	BUG_ON(buffer->user_data > alloc->buffer + alloc->buffer_size);  in binder_free_buf_locked()
658 	if (buffer->async_transaction) {  in binder_free_buf_locked()
667 		(void __user *)PAGE_ALIGN((uintptr_t)buffer->user_data),  in binder_free_buf_locked()
669 			  buffer->user_data + buffer_size) & PAGE_MASK));  in binder_free_buf_locked()
671 	rb_erase(&buffer->rb_node, &alloc->allocated_buffers);  in binder_free_buf_locked()
672 	buffer->free = 1;  in binder_free_buf_locked()
673 	if (!list_is_last(&buffer->entry, &alloc->buffers)) {  in binder_free_buf_locked()
674 		struct binder_buffer *next = binder_buffer_next(buffer);  in binder_free_buf_locked()
681 	if (alloc->buffers.next != &buffer->entry) {  in binder_free_buf_locked()
682 		struct binder_buffer *prev = binder_buffer_prev(buffer);  in binder_free_buf_locked()
685 			binder_delete_free_buffer(alloc, buffer);  in binder_free_buf_locked()
687 			buffer = prev;  in binder_free_buf_locked()
690 	binder_insert_free_buffer(alloc, buffer);  in binder_free_buf_locked()
694 				   struct binder_buffer *buffer);
703 			    struct binder_buffer *buffer)  in binder_alloc_free_buf()  argument
713 	if (buffer->clear_on_free) {  in binder_alloc_free_buf()
714 		binder_alloc_clear_buf(alloc, buffer);  in binder_alloc_free_buf()
715 		buffer->clear_on_free = false;  in binder_alloc_free_buf()
718 	binder_free_buf_locked(alloc, buffer);  in binder_alloc_free_buf()
740 	struct binder_buffer *buffer;  in binder_alloc_mmap_handler()  local
758 	alloc->buffer = (void __user *)vma->vm_start;  in binder_alloc_mmap_handler()
769 	buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);  in binder_alloc_mmap_handler()
770 	if (!buffer) {  in binder_alloc_mmap_handler()
776 	buffer->user_data = alloc->buffer;  in binder_alloc_mmap_handler()
777 	list_add(&buffer->entry, &alloc->buffers);  in binder_alloc_mmap_handler()
778 	buffer->free = 1;  in binder_alloc_mmap_handler()
779 	binder_insert_free_buffer(alloc, buffer);  in binder_alloc_mmap_handler()
789 	alloc->buffer = NULL;  in binder_alloc_mmap_handler()
807 	struct binder_buffer *buffer;  in binder_alloc_deferred_release()  local
815 		buffer = rb_entry(n, struct binder_buffer, rb_node);  in binder_alloc_deferred_release()
818 		BUG_ON(buffer->transaction);  in binder_alloc_deferred_release()
820 		if (buffer->clear_on_free) {  in binder_alloc_deferred_release()
821 			binder_alloc_clear_buf(alloc, buffer);  in binder_alloc_deferred_release()
822 			buffer->clear_on_free = false;  in binder_alloc_deferred_release()
824 		binder_free_buf_locked(alloc, buffer);  in binder_alloc_deferred_release()
829 		buffer = list_first_entry(&alloc->buffers,  in binder_alloc_deferred_release()
831 		WARN_ON(!buffer->free);  in binder_alloc_deferred_release()
833 		list_del(&buffer->entry);  in binder_alloc_deferred_release()
835 		kfree(buffer);  in binder_alloc_deferred_release()
851 			page_addr = alloc->buffer + i * PAGE_SIZE;  in binder_alloc_deferred_release()
871 				struct binder_buffer *buffer)  in print_binder_buffer()  argument
874 		   prefix, buffer->debug_id, buffer->user_data,  in print_binder_buffer()
875 		   buffer->data_size, buffer->offsets_size,  in print_binder_buffer()
876 		   buffer->extra_buffers_size,  in print_binder_buffer()
877 		   buffer->transaction ? "active" : "delivered");  in print_binder_buffer()
1007 	page_addr = (uintptr_t)alloc->buffer + index * PAGE_SIZE;  in binder_alloc_free_page()
1116 				struct binder_buffer *buffer,  in check_buffer()  argument
1119 	size_t buffer_size = binder_alloc_buffer_size(alloc, buffer);  in check_buffer()
1124 		!buffer->free &&  in check_buffer()
1125 		(!buffer->allow_user_free || !buffer->transaction);  in check_buffer()
1148 					  struct binder_buffer *buffer,  in binder_alloc_get_page()  argument
1153 		(buffer->user_data - alloc->buffer);  in binder_alloc_get_page()
1171 				   struct binder_buffer *buffer)  in binder_alloc_clear_buf()  argument
1173 	size_t bytes = binder_alloc_buffer_size(alloc, buffer);  in binder_alloc_clear_buf()
1181 		page = binder_alloc_get_page(alloc, buffer,  in binder_alloc_clear_buf()
1204 				 struct binder_buffer *buffer,  in binder_alloc_copy_user_to_buffer()  argument
1209 	if (!check_buffer(alloc, buffer, buffer_offset, bytes))  in binder_alloc_copy_user_to_buffer()
1219 		page = binder_alloc_get_page(alloc, buffer,  in binder_alloc_copy_user_to_buffer()
1236 				       struct binder_buffer *buffer,  in binder_alloc_do_buffer_copy()  argument
1242 	if (!check_buffer(alloc, buffer, buffer_offset, bytes))  in binder_alloc_do_buffer_copy()
1250 		page = binder_alloc_get_page(alloc, buffer,  in binder_alloc_do_buffer_copy()
1266 				struct binder_buffer *buffer,  in binder_alloc_copy_to_buffer()  argument
1271 	return binder_alloc_do_buffer_copy(alloc, true, buffer, buffer_offset,  in binder_alloc_copy_to_buffer()
1277 				  struct binder_buffer *buffer,  in binder_alloc_copy_from_buffer()  argument
1281 	return binder_alloc_do_buffer_copy(alloc, false, buffer, buffer_offset,  in binder_alloc_copy_from_buffer()