4  * SPDX-License-Identifier: Apache-2.0
27 	k_thread_stack_t *stack;  member
34 static k_thread_stack_t *z_thread_stack_alloc_pool(size_t size)  in z_thread_stack_alloc_pool()  argument
38 	k_thread_stack_t *stack;  in z_thread_stack_alloc_pool()  local
40 	if (size > CONFIG_DYNAMIC_THREAD_STACK_SIZE) {  in z_thread_stack_alloc_pool()
41 		LOG_DBG("stack size %zu is > pool stack size %d", size,  in z_thread_stack_alloc_pool()
48 		LOG_DBG("unable to allocate stack from pool");  in z_thread_stack_alloc_pool()
54 	stack = (k_thread_stack_t *)&dynamic_stack[offset];  in z_thread_stack_alloc_pool()
56 	return stack;  in z_thread_stack_alloc_pool()
59 static k_thread_stack_t *z_thread_stack_alloc_dyn(size_t size, int flags)  in z_thread_stack_alloc_dyn()  argument
63 		return k_object_alloc_size(K_OBJ_THREAD_STACK_ELEMENT, size);  in z_thread_stack_alloc_dyn()
65 		/* Dynamic user stack needs a kobject, so if this option is not  in z_thread_stack_alloc_dyn()
72 	return z_thread_aligned_alloc(Z_KERNEL_STACK_OBJ_ALIGN, K_KERNEL_STACK_LEN(size));  in z_thread_stack_alloc_dyn()
75 k_thread_stack_t *z_impl_k_thread_stack_alloc(size_t size, int flags)  in z_impl_k_thread_stack_alloc()  argument
77 	k_thread_stack_t *stack = NULL;  in z_impl_k_thread_stack_alloc()  local
80 		stack = z_thread_stack_alloc_dyn(size, flags);  in z_impl_k_thread_stack_alloc()
81 		if (stack == NULL && CONFIG_DYNAMIC_THREAD_POOL_SIZE > 0) {  in z_impl_k_thread_stack_alloc()
82 			stack = z_thread_stack_alloc_pool(size);  in z_impl_k_thread_stack_alloc()
86 			stack = z_thread_stack_alloc_pool(size);  in z_impl_k_thread_stack_alloc()
89 		if ((stack == NULL) && IS_ENABLED(CONFIG_DYNAMIC_THREAD_ALLOC)) {  in z_impl_k_thread_stack_alloc()
90 			stack = z_thread_stack_alloc_dyn(size, flags);  in z_impl_k_thread_stack_alloc()
94 	return stack;  in z_impl_k_thread_stack_alloc()
98 static inline k_thread_stack_t *z_vrfy_k_thread_stack_alloc(size_t size, int flags)  in z_vrfy_k_thread_stack_alloc()  argument
100 	return z_impl_k_thread_stack_alloc(size, flags);  in z_vrfy_k_thread_stack_alloc()
109 	if (data->stack == (k_thread_stack_t *)thread->stack_info.start) {  in dyn_cb()
110 		__ASSERT(data->tid == NULL, "stack %p is associated with more than one thread!",  in dyn_cb()
111 			 (void *)thread->stack_info.start);  in dyn_cb()
112 		data->tid = (k_tid_t)thread;  in dyn_cb()
116 int z_impl_k_thread_stack_free(k_thread_stack_t *stack)  in z_impl_k_thread_stack_free()  argument
118 	struct dyn_cb_data data = {.stack = stack};  in z_impl_k_thread_stack_free()
120 	/* Get a possible tid associated with stack */  in z_impl_k_thread_stack_free()
127 			return -EBUSY;  in z_impl_k_thread_stack_free()
132 		if (IS_ARRAY_ELEMENT(dynamic_stack, stack)) {  in z_impl_k_thread_stack_free()
133 			if (sys_bitarray_free(&dynamic_ba, 1, ARRAY_INDEX(dynamic_stack, stack))) {  in z_impl_k_thread_stack_free()
134 				LOG_ERR("stack %p is not allocated!", stack);  in z_impl_k_thread_stack_free()
135 				return -EINVAL;  in z_impl_k_thread_stack_free()
144 		if (k_object_find(stack)) {  in z_impl_k_thread_stack_free()
145 			k_object_free(stack);  in z_impl_k_thread_stack_free()
147 			k_free(stack);  in z_impl_k_thread_stack_free()
150 		k_free(stack);  in z_impl_k_thread_stack_free()
153 		LOG_DBG("Invalid stack %p", stack);  in z_impl_k_thread_stack_free()
154 		return -EINVAL;  in z_impl_k_thread_stack_free()
161 static inline int z_vrfy_k_thread_stack_free(k_thread_stack_t *stack)  in z_vrfy_k_thread_stack_free()  argument
163 	/* The thread stack object must not be in initialized state.  in z_vrfy_k_thread_stack_free()
165 	 * Thread stack objects are initialized when the thread is created  in z_vrfy_k_thread_stack_free()
166 	 * and de-initialized when the thread is destroyed. Since we can't  in z_vrfy_k_thread_stack_free()
167 	 * free a stack that is in use, we have to check that the caller  in z_vrfy_k_thread_stack_free()
170 	K_OOPS(K_SYSCALL_OBJ_NEVER_INIT(stack, K_OBJ_THREAD_STACK_ELEMENT));  in z_vrfy_k_thread_stack_free()
172 	return z_impl_k_thread_stack_free(stack);  in z_vrfy_k_thread_stack_free()