92 #define stack_next(stack)       \  argument
93 	(*((vm_offset_t *)((stack) + kernel_stack_size) - 1))
143 	vm_offset_t     stack = 0;  in stack_alloc_internal()  local
151 	stack = stack_free_list;  in stack_alloc_internal()
152 	if (stack != 0) {  in stack_alloc_internal()
153 		stack_free_list = stack_next(stack);  in stack_alloc_internal()
165 	if (stack == 0) {  in stack_alloc_internal()
172 		kernel_memory_allocate(kernel_map, &stack,  in stack_alloc_internal()
181 		stack += PAGE_SIZE;  in stack_alloc_internal()
183 	return stack;  in stack_alloc_internal()
210 	vm_offset_t         stack = machine_stack_detach(thread);  in stack_free()  local
212 	assert(stack);  in stack_free()
213 	if (stack != thread->reserved_stack) {  in stack_free()
214 		stack_free_stack(stack);  in stack_free()
229 	vm_offset_t             stack)  in stack_free_stack()  argument
236 	assert(kasan_check_shadow(stack, kernel_stack_size, 0));  in stack_free_stack()
242 		stack_next(stack) = cache->free;  in stack_free_stack()
243 		cache->free = stack;  in stack_free_stack()
247 		stack_next(stack) = stack_free_list;  in stack_free_stack()
248 		stack_free_list = stack;  in stack_free_stack()
273 	vm_offset_t                     stack;  in stack_alloc_try()  local
276 	stack = cache->free;  in stack_alloc_try()
277 	if (stack != 0) {  in stack_alloc_try()
278 		cache->free = stack_next(stack);  in stack_alloc_try()
283 			stack = stack_free_list;  in stack_alloc_try()
284 			if (stack != 0) {  in stack_alloc_try()
285 				stack_free_list = stack_next(stack);  in stack_alloc_try()
293 	if (stack != 0 || (stack = thread->reserved_stack) != 0) {  in stack_alloc_try()
294 		machine_stack_attach(thread, stack);  in stack_alloc_try()
314 		vm_offset_t             stack;  in stack_collect()  local
324 			stack = stack_free_list;  in stack_collect()
325 			stack_free_list = stack_next(stack);  in stack_collect()
338 			stack = (vm_offset_t)vm_map_trunc_page(  in stack_collect()
339 				stack,  in stack_collect()
341 			stack -= PAGE_SIZE;  in stack_collect()
342 			kmem_free(kernel_map, stack, kernel_stack_size + ptoa(2));  in stack_collect()
343 			stack = 0;  in stack_collect()