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()
285 		index = (page_addr - alloc->buffer) / PAGE_SIZE;  in binder_update_page_range()
348 	struct binder_buffer *buffer;  in binder_alloc_new_buf_locked()  local
391 		buffer = rb_entry(n, struct binder_buffer, rb_node);  in binder_alloc_new_buf_locked()
392 		BUG_ON(!buffer->free);  in binder_alloc_new_buf_locked()
393 		buffer_size = binder_alloc_buffer_size(alloc, buffer);  in binder_alloc_new_buf_locked()
415 			buffer = rb_entry(n, struct binder_buffer, rb_node);  in binder_alloc_new_buf_locked()
416 			buffer_size = binder_alloc_buffer_size(alloc, buffer);  in binder_alloc_new_buf_locked()
424 			buffer = rb_entry(n, struct binder_buffer, rb_node);  in binder_alloc_new_buf_locked()
425 			buffer_size = binder_alloc_buffer_size(alloc, buffer);  in binder_alloc_new_buf_locked()
442 		buffer = rb_entry(best_fit, struct binder_buffer, rb_node);  in binder_alloc_new_buf_locked()
443 		buffer_size = binder_alloc_buffer_size(alloc, buffer);  in binder_alloc_new_buf_locked()
448 		      alloc->pid, size, buffer, buffer_size);  in binder_alloc_new_buf_locked()
451 		(((uintptr_t)buffer->user_data + buffer_size) & PAGE_MASK);  in binder_alloc_new_buf_locked()
454 		(void __user *)PAGE_ALIGN((uintptr_t)buffer->user_data + size);  in binder_alloc_new_buf_locked()
458 		PAGE_ALIGN((uintptr_t)buffer->user_data), end_page_addr);  in binder_alloc_new_buf_locked()
465 		new_buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);  in binder_alloc_new_buf_locked()
471 		new_buffer->user_data = (u8 __user *)buffer->user_data + size;  in binder_alloc_new_buf_locked()
472 		list_add(&new_buffer->entry, &buffer->entry);  in binder_alloc_new_buf_locked()
478 	buffer->free = 0;  in binder_alloc_new_buf_locked()
479 	buffer->allow_user_free = 0;  in binder_alloc_new_buf_locked()
480 	binder_insert_allocated_buffer_locked(alloc, buffer);  in binder_alloc_new_buf_locked()
483 		      alloc->pid, size, buffer);  in binder_alloc_new_buf_locked()
484 	buffer->data_size = data_size;  in binder_alloc_new_buf_locked()
485 	buffer->offsets_size = offsets_size;  in binder_alloc_new_buf_locked()
486 	buffer->async_transaction = is_async;  in binder_alloc_new_buf_locked()
487 	buffer->extra_buffers_size = extra_buffers_size;  in binder_alloc_new_buf_locked()
494 	return buffer;  in binder_alloc_new_buf_locked()
498 				 PAGE_ALIGN((uintptr_t)buffer->user_data),  in binder_alloc_new_buf_locked()
524 	struct binder_buffer *buffer;  in binder_alloc_new_buf()  local
527 	buffer = binder_alloc_new_buf_locked(alloc, data_size, offsets_size,  in binder_alloc_new_buf()
530 	return buffer;  in binder_alloc_new_buf()
533 static void __user *buffer_start_page(struct binder_buffer *buffer)  in buffer_start_page()  argument
535 	return (void __user *)((uintptr_t)buffer->user_data & PAGE_MASK);  in buffer_start_page()
538 static void __user *prev_buffer_end_page(struct binder_buffer *buffer)  in prev_buffer_end_page()  argument
541 		(((uintptr_t)(buffer->user_data) - 1) & PAGE_MASK);  in prev_buffer_end_page()
545 				      struct binder_buffer *buffer)  in binder_delete_free_buffer()  argument
549 	BUG_ON(alloc->buffers.next == &buffer->entry);  in binder_delete_free_buffer()
550 	prev = binder_buffer_prev(buffer);  in binder_delete_free_buffer()
552 	if (prev_buffer_end_page(prev) == buffer_start_page(buffer)) {  in binder_delete_free_buffer()
556 				   alloc->pid, buffer->user_data,  in binder_delete_free_buffer()
560 	if (!list_is_last(&buffer->entry, &alloc->buffers)) {  in binder_delete_free_buffer()
561 		next = binder_buffer_next(buffer);  in binder_delete_free_buffer()
562 		if (buffer_start_page(next) == buffer_start_page(buffer)) {  in binder_delete_free_buffer()
567 					   buffer->user_data,  in binder_delete_free_buffer()
572 	if (PAGE_ALIGNED(buffer->user_data)) {  in binder_delete_free_buffer()
575 				   alloc->pid, buffer->user_data);  in binder_delete_free_buffer()
582 				   alloc->pid, buffer->user_data,  in binder_delete_free_buffer()
585 		binder_update_page_range(alloc, 0, buffer_start_page(buffer),  in binder_delete_free_buffer()
586 					 buffer_start_page(buffer) + PAGE_SIZE);  in binder_delete_free_buffer()
588 	list_del(&buffer->entry);  in binder_delete_free_buffer()
589 	kfree(buffer);  in binder_delete_free_buffer()
593 				   struct binder_buffer *buffer)  in binder_free_buf_locked()  argument
597 	buffer_size = binder_alloc_buffer_size(alloc, buffer);  in binder_free_buf_locked()
599 	size = ALIGN(buffer->data_size, sizeof(void *)) +  in binder_free_buf_locked()
600 		ALIGN(buffer->offsets_size, sizeof(void *)) +  in binder_free_buf_locked()
601 		ALIGN(buffer->extra_buffers_size, sizeof(void *));  in binder_free_buf_locked()
605 		      alloc->pid, buffer, size, buffer_size);  in binder_free_buf_locked()
607 	BUG_ON(buffer->free);  in binder_free_buf_locked()
609 	BUG_ON(buffer->transaction != NULL);  in binder_free_buf_locked()
610 	BUG_ON(buffer->user_data < alloc->buffer);  in binder_free_buf_locked()
611 	BUG_ON(buffer->user_data > alloc->buffer + alloc->buffer_size);  in binder_free_buf_locked()
613 	if (buffer->async_transaction) {  in binder_free_buf_locked()
622 		(void __user *)PAGE_ALIGN((uintptr_t)buffer->user_data),  in binder_free_buf_locked()
624 			  buffer->user_data + buffer_size) & PAGE_MASK));  in binder_free_buf_locked()
626 	rb_erase(&buffer->rb_node, &alloc->allocated_buffers);  in binder_free_buf_locked()
627 	buffer->free = 1;  in binder_free_buf_locked()
628 	if (!list_is_last(&buffer->entry, &alloc->buffers)) {  in binder_free_buf_locked()
629 		struct binder_buffer *next = binder_buffer_next(buffer);  in binder_free_buf_locked()
636 	if (alloc->buffers.next != &buffer->entry) {  in binder_free_buf_locked()
637 		struct binder_buffer *prev = binder_buffer_prev(buffer);  in binder_free_buf_locked()
640 			binder_delete_free_buffer(alloc, buffer);  in binder_free_buf_locked()
642 			buffer = prev;  in binder_free_buf_locked()
645 	binder_insert_free_buffer(alloc, buffer);  in binder_free_buf_locked()
656 			    struct binder_buffer *buffer)  in binder_alloc_free_buf()  argument
659 	binder_free_buf_locked(alloc, buffer);  in binder_alloc_free_buf()
681 	struct binder_buffer *buffer;  in binder_alloc_mmap_handler()  local
684 	if (alloc->buffer) {  in binder_alloc_mmap_handler()
690 	alloc->buffer = (void __user *)vma->vm_start;  in binder_alloc_mmap_handler()
704 	buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);  in binder_alloc_mmap_handler()
705 	if (!buffer) {  in binder_alloc_mmap_handler()
711 	buffer->user_data = alloc->buffer;  in binder_alloc_mmap_handler()
712 	list_add(&buffer->entry, &alloc->buffers);  in binder_alloc_mmap_handler()
713 	buffer->free = 1;  in binder_alloc_mmap_handler()
714 	binder_insert_free_buffer(alloc, buffer);  in binder_alloc_mmap_handler()
726 	alloc->buffer = NULL;  in binder_alloc_mmap_handler()
741 	struct binder_buffer *buffer;  in binder_alloc_deferred_release()  local
748 		buffer = rb_entry(n, struct binder_buffer, rb_node);  in binder_alloc_deferred_release()
751 		BUG_ON(buffer->transaction);  in binder_alloc_deferred_release()
753 		binder_free_buf_locked(alloc, buffer);  in binder_alloc_deferred_release()
758 		buffer = list_first_entry(&alloc->buffers,  in binder_alloc_deferred_release()
760 		WARN_ON(!buffer->free);  in binder_alloc_deferred_release()
762 		list_del(&buffer->entry);  in binder_alloc_deferred_release()
764 		kfree(buffer);  in binder_alloc_deferred_release()
780 			page_addr = alloc->buffer + i * PAGE_SIZE;  in binder_alloc_deferred_release()
800 				struct binder_buffer *buffer)  in print_binder_buffer()  argument
803 		   prefix, buffer->debug_id, buffer->user_data,  in print_binder_buffer()
804 		   buffer->data_size, buffer->offsets_size,  in print_binder_buffer()
805 		   buffer->extra_buffers_size,  in print_binder_buffer()
806 		   buffer->transaction ? "active" : "delivered");  in print_binder_buffer()
922 	page_addr = (uintptr_t)alloc->buffer + index * PAGE_SIZE;  in binder_alloc_free_page()
1033 				struct binder_buffer *buffer,  in check_buffer()  argument
1036 	size_t buffer_size = binder_alloc_buffer_size(alloc, buffer);  in check_buffer()
1041 		!buffer->free &&  in check_buffer()
1042 		(!buffer->allow_user_free || !buffer->transaction);  in check_buffer()
1065 					  struct binder_buffer *buffer,  in binder_alloc_get_page()  argument
1070 		(buffer->user_data - alloc->buffer);  in binder_alloc_get_page()
1094 				 struct binder_buffer *buffer,  in binder_alloc_copy_user_to_buffer()  argument
1099 	if (!check_buffer(alloc, buffer, buffer_offset, bytes))  in binder_alloc_copy_user_to_buffer()
1109 		page = binder_alloc_get_page(alloc, buffer,  in binder_alloc_copy_user_to_buffer()
1126 				       struct binder_buffer *buffer,  in binder_alloc_do_buffer_copy()  argument
1132 	if (!check_buffer(alloc, buffer, buffer_offset, bytes))  in binder_alloc_do_buffer_copy()
1142 		page = binder_alloc_get_page(alloc, buffer,  in binder_alloc_do_buffer_copy()
1165 				struct binder_buffer *buffer,  in binder_alloc_copy_to_buffer()  argument
1170 	return binder_alloc_do_buffer_copy(alloc, true, buffer, buffer_offset,  in binder_alloc_copy_to_buffer()
1176 				  struct binder_buffer *buffer,  in binder_alloc_copy_from_buffer()  argument
1180 	return binder_alloc_do_buffer_copy(alloc, false, buffer, buffer_offset,  in binder_alloc_copy_from_buffer()