146     size_t *bt_filled)  in backtrace_current_thread_wrapper()  argument
148 	int ret = sysctlbyname("kern.backtrace.user", bt, bt_filled, NULL,  in backtrace_current_thread_wrapper()
155 	T_LOG("kernel returned %zu frame backtrace", *bt_filled);  in backtrace_current_thread_wrapper()
177 	size_t bt_filled = USER_FRAMES + MAX_SYSCALL_SETUP_FRAMES;  in expect_callstack()  local
178 	backtrace_current_thread_wrapper(scenario, bt, &bt_filled);  in expect_callstack()
180 	unsigned int bt_len = (unsigned int)bt_filled;  in expect_callstack()
252 	size_t bt_filled = ASYNC_FRAMES + MAX_SYSCALL_SETUP_FRAMES;  in expect_async_callstack()  local
253 	backtrace_current_thread_wrapper(USER_SCENARIO, bt, &bt_filled);  in expect_async_callstack()
255 	unsigned int bt_len = (unsigned int)bt_filled;  in expect_async_callstack()
356 	size_t bt_filled = USER_FRAMES, bt_filled_after = 0;  variable
367 	int ret = sysctlbyname("kern.backtrace.user", bt_init, &bt_filled, NULL, 0);
394 	bt_start = (char *)guard_page - (kword_size * bt_filled);
395 	bt_filled_after = bt_filled;
401 	T_EXPECT_EQ(bt_filled, bt_filled_after,
407 	bt_filled_after = bt_filled;