tests: common: move irq_offload test to common

This is a small test that can be easily integrated into the common set
of tests we have already.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>

tests/kernel/common/CMakeLists.txt

@@ -24,4 +24,5 @@ target_sources(app PRIVATE
 	src/multilib.c
   src/errno.c
   src/boot_delay.c
+  src/irq_offload.c
   )

tests/kernel/common/prj.conf

@@ -4,3 +4,4 @@ CONFIG_LOG=y
 CONFIG_POLL=y
 CONFIG_QEMU_TICKLESS_WORKAROUND=y
 CONFIG_BOOT_DELAY=500
+CONFIG_IRQ_OFFLOAD=y

tests/kernel/common/src/irq_offload.c

@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2017 Intel Corporation
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * @file
+ *
+ * This test case verifies the correctness of irq_offload(), an important
+ * routine used in many other test cases for running a function in interrupt
+ * context, on the IRQ stack.
+ *
+ */
+#include <zephyr.h>
+#include <ztest.h>
+#include <kernel_structs.h>
+#include <irq_offload.h>
+
+volatile u32_t sentinel;
+#define SENTINEL_VALUE 0xDEADBEEF
+
+static void offload_function(void *param)
+{
+	u32_t x = (u32_t)param;
+
+	/* Make sure we're in IRQ context */
+	zassert_true(_is_in_isr(), "Not in IRQ context!");
+
+	sentinel = x;
+}
+
+/**
+ * @brief Verify thread context
+ *
+ * @ingroup kernel_interrupt_tests
+ *
+ * @details Check whether offloaded running function is in interrupt
+ * context, on the IRQ stack or not.
+ */
+void test_irq_offload(void)
+{
+	/**TESTPOINT: Offload to IRQ context*/
+	irq_offload(offload_function, (void *)SENTINEL_VALUE);
+
+	zassert_equal(sentinel, SENTINEL_VALUE,
+		"irq_offload() didn't work properly");
+}
+

tests/kernel/common/src/main.c

@@ -22,6 +22,7 @@ extern void test_clock_uptime(void);
 extern void test_multilib(void);
 extern void test_thread_context(void);
 extern void test_verify_bootdelay(void);
+extern void test_irq_offload(void);
 
 /**
  * @defgroup kernel_common_tests Common Tests
@@ -71,6 +72,7 @@ void test_main(void)
 {
 	ztest_test_suite(common,
 			 ztest_unit_test(test_verify_bootdelay),
+			 ztest_unit_test(test_irq_offload),
 			 ztest_unit_test(test_byteorder_memcpy_swap),
 			 ztest_unit_test(test_byteorder_mem_swap),
 			 ztest_unit_test(test_atomic),