Display the irq stack usage on the for the init thread (pid = 0)

src/modules/systemlib/printload.c

@@ -251,19 +251,23 @@ void print_load(uint64_t t, int fd, struct print_load_s *print_state)
 				       );
 			}
 
-			unsigned stack_size = (uintptr_t)system_load.tasks[i].tcb->adj_stack_ptr -
-					      (uintptr_t)system_load.tasks[i].tcb->stack_alloc_ptr;
-			unsigned stack_free = 0;
-			uint8_t *stack_sweeper = (uint8_t *)system_load.tasks[i].tcb->stack_alloc_ptr;
-
-			while (stack_free < stack_size) {
-				if (*stack_sweeper++ != 0xff) {
-					break;
-				}
+			size_t stack_size = system_load.tasks[i].tcb->adj_stack_size;
+			ssize_t stack_free = 0;
+
+#if CONFIG_ARCH_INTERRUPTSTACK > 3
+
+			if (system_load.tasks[i].tcb->pid == 0) {
+				stack_size = (CONFIG_ARCH_INTERRUPTSTACK & ~3);
+				stack_free = up_check_intstack_remain();
 
-				stack_free++;
+			} else {
+#endif
+				stack_free = up_check_tcbstack_remain(system_load.tasks[i].tcb);
+#if CONFIG_ARCH_INTERRUPTSTACK > 3
 			}
 
+#endif
+
 			dprintf(fd, "%s%4d %*-s %8lld %2d.%03d %5u/%5u %3u (%3u) ",
 				clear_line,
 				system_load.tasks[i].tcb->pid,
@@ -274,7 +278,7 @@ void print_load(uint64_t t, int fd, struct print_load_s *print_state)
 				stack_size - stack_free,
 				stack_size,
 				system_load.tasks[i].tcb->sched_priority,
-#if CONFIG_ARCH_BOARD_SIM
+#if CONFIG_ARCH_BOARD_SIM || !defined(CONFIG_PRIORITY_INHERITANCE)
 				0);
 #else
 				system_load.tasks[i].tcb->base_priority);
@@ -283,6 +287,7 @@ void print_load(uint64_t t, int fd, struct print_load_s *print_state)
 #if CONFIG_RR_INTERVAL > 0
 			/* print scheduling info with RR time slice */
 			dprintf(fd, " %6d\n", system_load.tasks[i].tcb->timeslice);
+			(void)tstate_name(TSTATE_TASK_INVALID); // Stop not used warning
 #else
 			// print task state instead
 			dprintf(fd, " %-6s\n", tstate_name(system_load.tasks[i].tcb->task_state));