tests: debug/thread_analyzer: add some build tests

Add some build tests for thread_analyzer to catch build issues
at CI.

Signed-off-by: Daniel Leung <daniel.leung@intel.com>

tests/subsys/debug/thread_analyzer/CMakeLists.txt

@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.20.0)
+
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(thread_analyzer_tests)
+
+target_sources(app PRIVATE src/main.c)

tests/subsys/debug/thread_analyzer/prj.conf

@@ -0,0 +1,5 @@
+CONFIG_THREAD_ANALYZER=y
+CONFIG_THREAD_ANALYZER_AUTO=y
+
+# log immediate mode requires a bit more stack to print
+CONFIG_THREAD_ANALYZER_AUTO_STACK_SIZE=2048

tests/subsys/debug/thread_analyzer/src/main.c

@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2024 Intel Corporation
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/kernel.h>
+
+#define EXTRA_THREAD_STACKSIZE 2048
+
+struct k_thread extra_thread;
+K_THREAD_STACK_DEFINE(extra_stack, EXTRA_THREAD_STACKSIZE);
+
+static void thread_entry(void *p1, void *p2, void *p3)
+{
+	/* This thread does not have a name so thread analyzer will display
+	 * the memory address of the thread struct, which is needed for
+	 * the twister console harness to match (even if CONFIG_THREAD_NAME=y).
+	 */
+	while (true) {
+		k_sleep(K_SECONDS(300));
+	}
+}
+
+int main(void)
+{
+	k_thread_create(&extra_thread, extra_stack, EXTRA_THREAD_STACKSIZE,
+			thread_entry, NULL, NULL, NULL, K_PRIO_PREEMPT(0),
+			IS_ENABLED(CONFIG_USERSPACE) ? K_USER : 0,
+			K_MSEC(0));
+	return 0;
+}

tests/subsys/debug/thread_analyzer/testcase.yaml

@@ -0,0 +1,55 @@
+common:
+  integration_platforms:
+    - mps2/an385
+    - qemu_x86_64
+  tags:
+    - debug
+    - thread_analyzer
+  platform_exclude:
+    # native_sim prints nothing from thread analyzer so skips it for now.
+    - native_sim
+tests:
+  debug.thread_analyzer.printk:
+    extra_configs:
+      - CONFIG_THREAD_ANALYZER_USE_PRINTK=y
+    harness: console
+    harness_config:
+      type: multi_line
+      regex:
+        - "(.*)0x([0-9a-fA-F]+)([ ]+) : STACK: unused [0-9]+ usage [0-9]+ / [0-9]+ (.*)"
+        - "(.*)ISR0([ ]+) : STACK: unused [0-9]+ usage [0-9]+ / [0-9]+ (.*)"
+  debug.thread_analyzer.printk.userspace:
+    filter: CONFIG_ARCH_HAS_USERSPACE
+    extra_configs:
+      - CONFIG_THREAD_ANALYZER_USE_PRINTK=y
+      - CONFIG_USERSPACE=y
+    harness: console
+    harness_config:
+      type: multi_line
+      regex:
+        - "(.*)0x([0-9a-fA-F]+)([ ]+) : STACK: unused [0-9]+ usage [0-9]+ / [0-9]+ (.*)"
+        - "(.*)ISR0([ ]+) : STACK: unused [0-9]+ usage [0-9]+ / [0-9]+ (.*)"
+  debug.thread_analyzer.log_backend:
+    extra_configs:
+      - CONFIG_THREAD_ANALYZER_USE_LOG=y
+      - CONFIG_LOG=y
+      - CONFIG_LOG_MODE_IMMEDIATE=y
+    harness: console
+    harness_config:
+      type: multi_line
+      regex:
+        - "(.*)0x([0-9a-fA-F]+)([ ]+) : STACK: unused [0-9]+ usage [0-9]+ / [0-9]+ (.*)"
+        - "(.*)ISR0([ ]+) : STACK: unused [0-9]+ usage [0-9]+ / [0-9]+ (.*)"
+  debug.thread_analyzer.log_backend.userspace:
+    filter: CONFIG_ARCH_HAS_USERSPACE
+    extra_configs:
+      - CONFIG_USERSPACE=y
+      - CONFIG_THREAD_ANALYZER_USE_LOG=y
+      - CONFIG_LOG=y
+      - CONFIG_LOG_MODE_IMMEDIATE=y
+    harness: console
+    harness_config:
+      type: multi_line
+      regex:
+        - "(.*)0x([0-9a-fA-F]+)([ ]+) : STACK: unused [0-9]+ usage [0-9]+ / [0-9]+ (.*)"
+        - "(.*)ISR0([ ]+) : STACK: unused [0-9]+ usage [0-9]+ / [0-9]+ (.*)"